/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-b030c9e [2022-03-21 00:01:45,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-21 00:01:45,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-21 00:01:45,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-21 00:01:45,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-21 00:01:45,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-21 00:01:45,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-21 00:01:45,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-21 00:01:45,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-21 00:01:45,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-21 00:01:45,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-21 00:01:45,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-21 00:01:45,465 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-21 00:01:45,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-21 00:01:45,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-21 00:01:45,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-21 00:01:45,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-21 00:01:45,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-21 00:01:45,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-21 00:01:45,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-21 00:01:45,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-21 00:01:45,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-21 00:01:45,494 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-21 00:01:45,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-21 00:01:45,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-21 00:01:45,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-21 00:01:45,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-21 00:01:45,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-21 00:01:45,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-21 00:01:45,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-21 00:01:45,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-21 00:01:45,497 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-21 00:01:45,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-21 00:01:45,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-21 00:01:45,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-21 00:01:45,497 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-21 00:01:45,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-21 00:01:45,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-21 00:01:45,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-21 00:01:45,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-21 00:01:45,498 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-21 00:01:45,498 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-21 00:01:45,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-21 00:01:45,498 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-21 00:01:45,498 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-21 00:01:45,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-21 00:01:45,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-21 00:01:45,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-21 00:01:45,746 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-21 00:01:45,747 INFO L275 PluginConnector]: CDTParser initialized [2022-03-21 00:01:45,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/parport.i.cil-2.c [2022-03-21 00:01:45,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d36da7593/92a083c42051472697aac9fc078e7a83/FLAGc013382ba [2022-03-21 00:01:46,397 INFO L306 CDTParser]: Found 1 translation units. [2022-03-21 00:01:46,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/parport.i.cil-2.c [2022-03-21 00:01:46,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d36da7593/92a083c42051472697aac9fc078e7a83/FLAGc013382ba [2022-03-21 00:01:46,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d36da7593/92a083c42051472697aac9fc078e7a83 [2022-03-21 00:01:46,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-21 00:01:46,566 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-21 00:01:46,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-21 00:01:46,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-21 00:01:46,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-21 00:01:46,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.03 12:01:46" (1/1) ... [2022-03-21 00:01:46,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2814d5b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:01:46, skipping insertion in model container [2022-03-21 00:01:46,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.03 12:01:46" (1/1) ... [2022-03-21 00:01:46,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-21 00:01:46,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-21 00:01:47,174 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] [2022-03-21 00:01:47,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-21 00:01:47,825 INFO L203 MainTranslator]: Completed pre-run [2022-03-21 00:01:47,889 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] [2022-03-21 00:01:48,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-21 00:01:48,131 INFO L208 MainTranslator]: Completed translation [2022-03-21 00:01:48,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:01:48 WrapperNode [2022-03-21 00:01:48,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-21 00:01:48,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-21 00:01:48,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-21 00:01:48,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-21 00:01:48,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:01:48" (1/1) ... [2022-03-21 00:01:48,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:01:48" (1/1) ... [2022-03-21 00:01:48,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:01:48" (1/1) ... [2022-03-21 00:01:48,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:01:48" (1/1) ... [2022-03-21 00:01:48,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:01:48" (1/1) ... [2022-03-21 00:01:48,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:01:48" (1/1) ... [2022-03-21 00:01:48,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:01:48" (1/1) ... [2022-03-21 00:01:48,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-21 00:01:48,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-21 00:01:48,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-21 00:01:48,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-21 00:01:48,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:01:48" (1/1) ... [2022-03-21 00:01:48,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-21 00:01:48,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:01:48,490 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) [2022-03-21 00:01:48,512 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 [2022-03-21 00:01:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-21 00:01:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-21 00:01:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2022-03-21 00:01:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2022-03-21 00:01:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~TO~VOID [2022-03-21 00:01:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-21 00:01:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-21 00:01:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-03-21 00:01:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlIntegerToUnicodeString [2022-03-21 00:01:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlUnicodeStringToInteger [2022-03-21 00:01:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareUnicodeString [2022-03-21 00:01:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAppendUnicodeStringToString [2022-03-21 00:01:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure READ_PORT_UCHAR [2022-03-21 00:01:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure WRITE_PORT_UCHAR [2022-03-21 00:01:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-03-21 00:01:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-03-21 00:01:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-03-21 00:01:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeDpc [2022-03-21 00:01:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInsertQueueDpc [2022-03-21 00:01:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSynchronizeExecution [2022-03-21 00:01:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTimeIncrement [2022-03-21 00:01:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAcquireCancelSpinLock [2022-03-21 00:01:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateErrorLogEntry [2022-03-21 00:01:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure IoConnectInterrupt [2022-03-21 00:01:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReportResourceUsage [2022-03-21 00:01:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure IoInitializeRemoveLockEx [2022-03-21 00:01:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseRemoveLockEx [2022-03-21 00:01:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseRemoveLockAndWaitEx [2022-03-21 00:01:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWriteErrorLogEntry [2022-03-21 00:01:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWMIRegistrationControl [2022-03-21 00:01:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure IoOpenDeviceRegistryKey [2022-03-21 00:01:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure KeStallExecutionProcessor [2022-03-21 00:01:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure PoRequestPowerIrp [2022-03-21 00:01:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure PoSetPowerState [2022-03-21 00:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfReferenceObject [2022-03-21 00:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwQueryValueKey [2022-03-21 00:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwSetValueKey [2022-03-21 00:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure WmiCompleteRequest [2022-03-21 00:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-21 00:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchCleanup [2022-03-21 00:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpPnpIrpInfo [2022-03-21 00:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLock [2022-03-21 00:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure PptReleaseRemoveLock [2022-03-21 00:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure PptReleaseRemoveLockAndWait [2022-03-21 00:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpResourceList [2022-03-21 00:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpResourceRequirementsList [2022-03-21 00:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLogError [2022-03-21 00:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-03-21 00:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure PptUnload [2022-03-21 00:01:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCleanRemovalRelationsList [2022-03-21 00:01:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAddPptRemovalRelation [2022-03-21 00:01:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRemovePptRemovalRelation [2022-03-21 00:01:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDumpRemovalRelationsList [2022-03-21 00:01:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDumpPptRemovalRelationsStruct [2022-03-21 00:01:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchInternalDeviceControl [2022-03-21 00:01:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure PptIsNecR98Machine [2022-03-21 00:01:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchCreate [2022-03-21 00:01:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchClose [2022-03-21 00:01:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInitiate1284_3 [2022-03-21 00:01:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectDevice [2022-03-21 00:01:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectDevice [2022-03-21 00:01:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure Ppt1284_3AssignAddress [2022-03-21 00:01:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckIfNon1284_3Present [2022-03-21 00:01:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckIfStl1284_3 [2022-03-21 00:01:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckIfStlProductId [2022-03-21 00:01:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSend1284_3Command [2022-03-21 00:01:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectChipFilter [2022-03-21 00:01:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectPortType [2022-03-21 00:01:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectPortCapabilities [2022-03-21 00:01:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEcpPort [2022-03-21 00:01:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPortIfDot3DevicePresent [2022-03-21 00:01:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPortIfUserRequested [2022-03-21 00:01:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPort [2022-03-21 00:01:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectBytePort [2022-03-21 00:01:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoDepth [2022-03-21 00:01:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoWidth [2022-03-21 00:01:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetChipMode [2022-03-21 00:01:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure PptClearChipMode [2022-03-21 00:01:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrSetMode [2022-03-21 00:01:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetByteMode [2022-03-21 00:01:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure PptClearByteMode [2022-03-21 00:01:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckByteMode [2022-03-21 00:01:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrClearMode [2022-03-21 00:01:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFindNatChip [2022-03-21 00:01:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure PptBuildResourceList [2022-03-21 00:01:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpBuildRemovalRelations [2022-03-21 00:01:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartScanPciCardCmResourceList [2022-03-21 00:01:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure PptIsPci [2022-03-21 00:01:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCompleteRequest [2022-03-21 00:01:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpInitDispatchFunctionTable [2022-03-21 00:01:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpAddDevice [2022-03-21 00:01:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPnp [2022-03-21 00:01:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartDevice [2022-03-21 00:01:48,535 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartScanCmResourceList [2022-03-21 00:01:48,535 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartValidateResources [2022-03-21 00:01:48,535 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterResourceRequirements [2022-03-21 00:01:48,535 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterExistsNonIrqResourceList [2022-03-21 00:01:48,535 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterRemoveIrqResourceLists [2022-03-21 00:01:48,535 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterGetEndOfResourceRequirementsList [2022-03-21 00:01:48,535 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterNukeIrqResourceDescriptorsFromAllLists [2022-03-21 00:01:48,535 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterNukeIrqResourceDescriptors [2022-03-21 00:01:48,535 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpQueryDeviceRelations [2022-03-21 00:01:48,535 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpQueryStopDevice [2022-03-21 00:01:48,535 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpCancelStopDevice [2022-03-21 00:01:48,535 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStopDevice [2022-03-21 00:01:48,535 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpQueryRemoveDevice [2022-03-21 00:01:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpCancelRemoveDevice [2022-03-21 00:01:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpRemoveDevice [2022-03-21 00:01:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpSurpriseRemoval [2022-03-21 00:01:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpListContainsIrqResourceDescriptor [2022-03-21 00:01:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpBounceAndCatchPnpIrp [2022-03-21 00:01:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2022-03-21 00:01:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpUnhandledIrp [2022-03-21 00:01:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPowerComplete [2022-03-21 00:01:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure InitNEC_98 [2022-03-21 00:01:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPower [2022-03-21 00:01:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockDiskModeByte [2022-03-21 00:01:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockPrtModeByte [2022-03-21 00:01:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipSetDiskMode [2022-03-21 00:01:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipCheckDevice [2022-03-21 00:01:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectLegacyZip [2022-03-21 00:01:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectLegacyZip [2022-03-21 00:01:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRegInitDriverSettings [2022-03-21 00:01:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRegGetDeviceParameterDword [2022-03-21 00:01:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRegSetDeviceParameterDword [2022-03-21 00:01:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFailRequest [2022-03-21 00:01:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLockOrFailIrp [2022-03-21 00:01:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPreProcessIrp [2022-03-21 00:01:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPostProcessIrp [2022-03-21 00:01:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchCompletionRoutine [2022-03-21 00:01:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure PptGetPortNameFromPhysicalDeviceObject [2022-03-21 00:01:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure PptConnectInterrupt [2022-03-21 00:01:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDisconnectInterrupt [2022-03-21 00:01:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedIncrement [2022-03-21 00:01:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedDecrement [2022-03-21 00:01:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedRead [2022-03-21 00:01:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedQueue [2022-03-21 00:01:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedDisconnect [2022-03-21 00:01:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCancelRoutine [2022-03-21 00:01:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePortDpc [2022-03-21 00:01:48,538 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTryAllocatePortAtInterruptLevel [2022-03-21 00:01:48,538 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePortFromInterruptLevel [2022-03-21 00:01:48,538 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInterruptService [2022-03-21 00:01:48,538 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTryAllocatePort [2022-03-21 00:01:48,538 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTraversePortCheckList [2022-03-21 00:01:48,538 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePort [2022-03-21 00:01:48,538 INFO L138 BoogieDeclarations]: Found implementation of procedure PptQueryNumWaiters [2022-03-21 00:01:48,538 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetCancelRoutine [2022-03-21 00:01:48,538 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTickCount [2022-03-21 00:01:48,538 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckPort [2022-03-21 00:01:48,538 INFO L138 BoogieDeclarations]: Found implementation of procedure PptBuildParallelPortDeviceName [2022-03-21 00:01:48,538 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInitializeDeviceExtension [2022-03-21 00:01:48,538 INFO L138 BoogieDeclarations]: Found implementation of procedure PptGetPortNumberFromLptName [2022-03-21 00:01:48,538 INFO L138 BoogieDeclarations]: Found implementation of procedure PptBuildDeviceObject [2022-03-21 00:01:48,538 INFO L138 BoogieDeclarations]: Found implementation of procedure PptWmiInitWmi [2022-03-21 00:01:48,538 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchSystemControl [2022-03-21 00:01:48,539 INFO L138 BoogieDeclarations]: Found implementation of procedure PptWmiQueryWmiRegInfo [2022-03-21 00:01:48,539 INFO L138 BoogieDeclarations]: Found implementation of procedure PptWmiQueryWmiDataBlock [2022-03-21 00:01:48,539 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-21 00:01:48,539 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-21 00:01:48,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-21 00:01:48,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-03-21 00:01:48,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-03-21 00:01:48,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-03-21 00:01:48,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-03-21 00:01:48,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-03-21 00:01:48,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-03-21 00:01:48,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-03-21 00:01:48,539 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-03-21 00:01:48,539 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-03-21 00:01:48,539 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-03-21 00:01:48,539 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-21 00:01:48,539 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-03-21 00:01:48,540 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-03-21 00:01:48,540 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-03-21 00:01:48,540 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-21 00:01:48,540 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-03-21 00:01:48,540 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-03-21 00:01:48,540 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-03-21 00:01:48,540 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-03-21 00:01:48,540 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-21 00:01:48,540 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-21 00:01:48,540 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-03-21 00:01:48,540 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-21 00:01:48,540 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-03-21 00:01:48,540 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-21 00:01:48,540 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-21 00:01:48,540 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-21 00:01:48,540 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-03-21 00:01:48,540 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-03-21 00:01:48,541 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-03-21 00:01:48,541 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-03-21 00:01:48,541 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-03-21 00:01:48,541 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-03-21 00:01:48,541 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-03-21 00:01:48,541 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-21 00:01:48,541 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-21 00:01:48,541 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-03-21 00:01:48,541 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-03-21 00:01:48,541 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-03-21 00:01:48,541 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-03-21 00:01:48,541 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-03-21 00:01:48,541 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-03-21 00:01:48,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-21 00:01:48,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-03-21 00:01:48,541 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-21 00:01:48,542 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-03-21 00:01:48,542 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-21 00:01:48,542 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-03-21 00:01:48,542 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-03-21 00:01:48,542 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-03-21 00:01:48,542 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-03-21 00:01:48,542 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-03-21 00:01:48,542 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-03-21 00:01:48,542 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-03-21 00:01:48,542 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-03-21 00:01:48,542 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-03-21 00:01:48,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-21 00:01:48,542 INFO L138 BoogieDeclarations]: Found implementation of procedure WmiSystemControl [2022-03-21 00:01:48,542 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAcquireRemoveLockEx [2022-03-21 00:01:48,543 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-03-21 00:01:48,543 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-21 00:01:48,543 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-03-21 00:01:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-21 00:01:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-21 00:01:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-21 00:01:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-21 00:01:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-21 00:01:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-03-21 00:01:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-21 00:01:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-21 00:01:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-21 00:01:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-03-21 00:01:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-03-21 00:01:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-21 00:01:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-21 00:01:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-03-21 00:01:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-03-21 00:01:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-03-21 00:01:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-03-21 00:01:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure RtlIntegerToUnicodeString [2022-03-21 00:01:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-21 00:01:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure RtlUnicodeStringToInteger [2022-03-21 00:01:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-21 00:01:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-03-21 00:01:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-03-21 00:01:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-03-21 00:01:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareUnicodeString [2022-03-21 00:01:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-03-21 00:01:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAppendUnicodeStringToString [2022-03-21 00:01:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-03-21 00:01:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-03-21 00:01:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure READ_PORT_UCHAR [2022-03-21 00:01:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure WRITE_PORT_UCHAR [2022-03-21 00:01:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-03-21 00:01:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-03-21 00:01:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-03-21 00:01:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeDpc [2022-03-21 00:01:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure KeInsertQueueDpc [2022-03-21 00:01:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-21 00:01:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure KeSynchronizeExecution [2022-03-21 00:01:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-03-21 00:01:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-21 00:01:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-03-21 00:01:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-03-21 00:01:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-03-21 00:01:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-21 00:01:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-03-21 00:01:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-03-21 00:01:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTimeIncrement [2022-03-21 00:01:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-03-21 00:01:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-03-21 00:01:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-03-21 00:01:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-03-21 00:01:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-03-21 00:01:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-03-21 00:01:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-03-21 00:01:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-03-21 00:01:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-03-21 00:01:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-03-21 00:01:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-03-21 00:01:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-03-21 00:01:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-03-21 00:01:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-21 00:01:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-03-21 00:01:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure IoAcquireCancelSpinLock [2022-03-21 00:01:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateErrorLogEntry [2022-03-21 00:01:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-21 00:01:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-03-21 00:01:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-03-21 00:01:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-03-21 00:01:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-21 00:01:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-21 00:01:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-21 00:01:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure IoConnectInterrupt [2022-03-21 00:01:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2022-03-21 00:01:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-21 00:01:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-03-21 00:01:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-03-21 00:01:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-03-21 00:01:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-21 00:01:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-03-21 00:01:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-03-21 00:01:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-03-21 00:01:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-03-21 00:01:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-21 00:01:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-03-21 00:01:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure IoReportResourceUsage [2022-03-21 00:01:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-03-21 00:01:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure IoInitializeRemoveLockEx [2022-03-21 00:01:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure IoAcquireRemoveLockEx [2022-03-21 00:01:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseRemoveLockEx [2022-03-21 00:01:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseRemoveLockAndWaitEx [2022-03-21 00:01:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure IoWriteErrorLogEntry [2022-03-21 00:01:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure IoWMIRegistrationControl [2022-03-21 00:01:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure IoOpenDeviceRegistryKey [2022-03-21 00:01:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-21 00:01:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-21 00:01:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure KeStallExecutionProcessor [2022-03-21 00:01:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure PoRequestPowerIrp [2022-03-21 00:01:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure PoSetPowerState [2022-03-21 00:01:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-21 00:01:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-21 00:01:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-21 00:01:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-03-21 00:01:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-21 00:01:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure ObfReferenceObject [2022-03-21 00:01:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-03-21 00:01:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-21 00:01:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure ZwQueryValueKey [2022-03-21 00:01:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure ZwSetValueKey [2022-03-21 00:01:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure WmiCompleteRequest [2022-03-21 00:01:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure WmiSystemControl [2022-03-21 00:01:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure PptCompleteRequest [2022-03-21 00:01:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-21 00:01:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure PptWmiInitWmi [2022-03-21 00:01:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchSystemControl [2022-03-21 00:01:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpInitDispatchFunctionTable [2022-03-21 00:01:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpAddDevice [2022-03-21 00:01:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPnp [2022-03-21 00:01:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure PptFailRequest [2022-03-21 00:01:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPreProcessIrp [2022-03-21 00:01:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPostProcessIrp [2022-03-21 00:01:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-03-21 00:01:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure PptUnload [2022-03-21 00:01:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchCompletionRoutine [2022-03-21 00:01:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure PptLogError [2022-03-21 00:01:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure PptConnectInterrupt [2022-03-21 00:01:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure PptDisconnectInterrupt [2022-03-21 00:01:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchCreate [2022-03-21 00:01:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchClose [2022-03-21 00:01:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedIncrement [2022-03-21 00:01:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedDecrement [2022-03-21 00:01:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedRead [2022-03-21 00:01:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedQueue [2022-03-21 00:01:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedDisconnect [2022-03-21 00:01:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure PptCancelRoutine [2022-03-21 00:01:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePortDpc [2022-03-21 00:01:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure PptTryAllocatePortAtInterruptLevel [2022-03-21 00:01:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePortFromInterruptLevel [2022-03-21 00:01:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure PptInterruptService [2022-03-21 00:01:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure PptTryAllocatePort [2022-03-21 00:01:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure PptTraversePortCheckList [2022-03-21 00:01:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePort [2022-03-21 00:01:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure PptQueryNumWaiters [2022-03-21 00:01:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchInternalDeviceControl [2022-03-21 00:01:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchCleanup [2022-03-21 00:01:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure PptIsNecR98Machine [2022-03-21 00:01:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPower [2022-03-21 00:01:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure PptRegInitDriverSettings [2022-03-21 00:01:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure PptGetPortNameFromPhysicalDeviceObject [2022-03-21 00:01:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetCancelRoutine [2022-03-21 00:01:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLockOrFailIrp [2022-03-21 00:01:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpPnpIrpInfo [2022-03-21 00:01:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLock [2022-03-21 00:01:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure PptReleaseRemoveLock [2022-03-21 00:01:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure PptReleaseRemoveLockAndWait [2022-03-21 00:01:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpResourceList [2022-03-21 00:01:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpResourceRequirementsList [2022-03-21 00:01:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectChipFilter [2022-03-21 00:01:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectPortType [2022-03-21 00:01:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetChipMode [2022-03-21 00:01:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure PptClearChipMode [2022-03-21 00:01:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure PptInitiate1284_3 [2022-03-21 00:01:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectDevice [2022-03-21 00:01:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectDevice [2022-03-21 00:01:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure Ppt1284_3AssignAddress [2022-03-21 00:01:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure PptSend1284_3Command [2022-03-21 00:01:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectLegacyZip [2022-03-21 00:01:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectLegacyZip [2022-03-21 00:01:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure PptDumpRemovalRelationsList [2022-03-21 00:01:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure PptRegGetDeviceParameterDword [2022-03-21 00:01:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure PptRegSetDeviceParameterDword [2022-03-21 00:01:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure PptBuildParallelPortDeviceName [2022-03-21 00:01:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure PptInitializeDeviceExtension [2022-03-21 00:01:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure PptGetPortNumberFromLptName [2022-03-21 00:01:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure PptBuildDeviceObject [2022-03-21 00:01:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPort [2022-03-21 00:01:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure PptCleanRemovalRelationsList [2022-03-21 00:01:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure CheckPort [2022-03-21 00:01:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-03-21 00:01:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-21 00:01:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-03-21 00:01:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure PptAddPptRemovalRelation [2022-03-21 00:01:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure PptRemovePptRemovalRelation [2022-03-21 00:01:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure PptDumpPptRemovalRelationsStruct [2022-03-21 00:01:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckIfStl1284_3 [2022-03-21 00:01:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckIfNon1284_3Present [2022-03-21 00:01:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckIfStlProductId [2022-03-21 00:01:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectPortCapabilities [2022-03-21 00:01:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEcpPort [2022-03-21 00:01:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPortIfDot3DevicePresent [2022-03-21 00:01:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPortIfUserRequested [2022-03-21 00:01:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectBytePort [2022-03-21 00:01:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoDepth [2022-03-21 00:01:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoWidth [2022-03-21 00:01:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrSetMode [2022-03-21 00:01:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrClearMode [2022-03-21 00:01:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure PptFindNatChip [2022-03-21 00:01:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure PptBuildResourceList [2022-03-21 00:01:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetByteMode [2022-03-21 00:01:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure PptClearByteMode [2022-03-21 00:01:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckByteMode [2022-03-21 00:01:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2022-03-21 00:01:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterResourceRequirements [2022-03-21 00:01:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpQueryDeviceRelations [2022-03-21 00:01:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpQueryStopDevice [2022-03-21 00:01:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpCancelStopDevice [2022-03-21 00:01:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStopDevice [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpQueryRemoveDevice [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpCancelRemoveDevice [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpRemoveDevice [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpSurpriseRemoval [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpUnhandledIrp [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartDevice [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartValidateResources [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartScanCmResourceList [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterNukeIrqResourceDescriptors [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterNukeIrqResourceDescriptorsFromAllLists [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterExistsNonIrqResourceList [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterGetEndOfResourceRequirementsList [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpListContainsIrqResourceDescriptor [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterRemoveIrqResourceLists [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpBounceAndCatchPnpIrp [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpBuildRemovalRelations [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartScanPciCardCmResourceList [2022-03-21 00:01:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure PptIsPci [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure PptPowerComplete [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure InitNEC_98 [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockDiskModeByte [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockPrtModeByte [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipSetDiskMode [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipCheckDevice [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~TO~VOID [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTickCount [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure PptWmiQueryWmiRegInfo [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure PptWmiQueryWmiDataBlock [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-03-21 00:01:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-21 00:01:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-21 00:01:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-21 00:01:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-21 00:01:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-21 00:01:49,303 INFO L234 CfgBuilder]: Building ICFG [2022-03-21 00:01:49,309 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-21 00:01:49,344 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:49,398 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:49,398 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:49,537 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:49,622 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !false; [2022-03-21 00:01:49,622 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume false; [2022-03-21 00:01:49,635 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:49,671 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-21 00:01:49,671 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-21 00:01:49,671 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:49,677 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:49,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:49,772 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:49,804 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-21 00:01:49,805 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-21 00:01:49,805 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:49,811 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:49,811 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:49,980 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:49,994 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:49,995 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:50,072 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:50,128 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-21 00:01:50,129 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-21 00:01:50,211 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:50,250 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2022-03-21 00:01:50,251 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2022-03-21 00:01:50,251 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:50,263 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-21 00:01:50,263 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-21 00:01:50,279 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:50,283 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:50,284 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:50,478 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:53,759 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !false; [2022-03-21 00:01:53,759 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume false; [2022-03-21 00:01:55,901 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:55,905 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:55,905 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:56,002 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:56,003 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:56,637 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-03-21 00:01:56,637 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2022-03-21 00:01:56,637 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-03-21 00:01:56,637 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2022-03-21 00:01:56,821 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:56,825 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:56,825 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:56,935 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:56,940 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:56,940 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:57,311 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:57,319 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:57,319 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:57,319 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:57,331 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:57,331 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:57,373 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:57,377 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:57,377 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:57,377 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:57,381 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:57,381 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:57,381 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:57,387 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:57,388 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:57,492 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:57,496 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:57,496 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:57,503 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:57,506 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:57,506 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:57,563 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:57,567 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:57,568 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:57,576 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:57,580 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:57,580 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:57,929 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:57,933 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:57,933 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:57,940 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:57,967 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-21 00:01:57,967 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-21 00:01:57,972 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:58,207 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !false; [2022-03-21 00:01:58,208 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume false; [2022-03-21 00:01:58,462 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:58,465 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:58,466 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:58,609 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:58,646 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-21 00:01:58,646 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-21 00:01:58,703 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:02:01,082 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2022-03-21 00:02:01,082 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2022-03-21 00:02:01,120 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:02:01,144 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-21 00:02:01,144 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-21 00:02:01,145 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:02:01,161 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-21 00:02:01,161 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-21 00:02:01,200 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:02:01,208 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-21 00:02:01,208 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-21 00:02:01,308 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:02:01,311 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:02:01,312 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:02:01,436 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:02:01,452 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-21 00:02:01,452 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-21 00:02:01,510 INFO L275 CfgBuilder]: Performing block encoding [2022-03-21 00:02:01,533 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-21 00:02:01,533 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2022-03-21 00:02:01,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.03 12:02:01 BoogieIcfgContainer [2022-03-21 00:02:01,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-21 00:02:01,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-21 00:02:01,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-21 00:02:01,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-21 00:02:01,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.03 12:01:46" (1/3) ... [2022-03-21 00:02:01,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcbee79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.03 12:02:01, skipping insertion in model container [2022-03-21 00:02:01,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:01:48" (2/3) ... [2022-03-21 00:02:01,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcbee79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.03 12:02:01, skipping insertion in model container [2022-03-21 00:02:01,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.03 12:02:01" (3/3) ... [2022-03-21 00:02:01,545 INFO L111 eAbstractionObserver]: Analyzing ICFG parport.i.cil-2.c [2022-03-21 00:02:01,549 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-21 00:02:01,549 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-21 00:02:01,588 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-21 00:02:01,593 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 [2022-03-21 00:02:01,594 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-21 00:02:01,636 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) [2022-03-21 00:02:01,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-21 00:02:01,642 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:01,643 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:01,643 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:01,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:01,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2073400986, now seen corresponding path program 1 times [2022-03-21 00:02:01,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:01,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [66092694] [2022-03-21 00:02:01,659 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:02:01,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2073400986, now seen corresponding path program 2 times [2022-03-21 00:02:01,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:01,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168369939] [2022-03-21 00:02:01,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:01,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:02,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:02,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-21 00:02:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:02:02,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:02,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168369939] [2022-03-21 00:02:02,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168369939] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:02,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:02,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:02:02,272 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:02:02,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [66092694] [2022-03-21 00:02:02,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [66092694] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:02,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:02,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:02:02,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227183764] [2022-03-21 00:02:02,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:02:02,275 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:02:02,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:02,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:02:02,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:02:02,296 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) [2022-03-21 00:02:05,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:02:07,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:02:12,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:02:17,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:02:23,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:23,271 INFO L93 Difference]: Finished difference Result 4216 states and 6551 transitions. [2022-03-21 00:02:23,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:02:23,273 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 [2022-03-21 00:02:23,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:23,333 INFO L225 Difference]: With dead ends: 4216 [2022-03-21 00:02:23,333 INFO L226 Difference]: Without dead ends: 2226 [2022-03-21 00:02:23,352 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-21 00:02:23,359 INFO L913 BasicCegarLoop]: 2421 mSDtfsCounter, 3234 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 3764 mSolverCounterSat, 1561 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s 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, 19.9s IncrementalHoareTripleChecker+Time [2022-03-21 00:02:23,361 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3637 Valid, 2782 Invalid, 5327 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1561 Valid, 3764 Invalid, 2 Unknown, 0 Unchecked, 19.9s Time] [2022-03-21 00:02:23,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2022-03-21 00:02:23,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 1985. [2022-03-21 00:02:23,894 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) [2022-03-21 00:02:23,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2849 transitions. [2022-03-21 00:02:23,909 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2849 transitions. Word has length 22 [2022-03-21 00:02:23,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:23,909 INFO L478 AbstractCegarLoop]: Abstraction has 1985 states and 2849 transitions. [2022-03-21 00:02:23,909 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) [2022-03-21 00:02:23,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2849 transitions. [2022-03-21 00:02:23,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-21 00:02:23,910 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:23,910 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:23,911 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-21 00:02:23,911 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:23,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:23,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1828450504, now seen corresponding path program 1 times [2022-03-21 00:02:23,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:23,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [375476322] [2022-03-21 00:02:23,923 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:02:23,923 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:02:23,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1828450504, now seen corresponding path program 2 times [2022-03-21 00:02:23,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:23,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612356159] [2022-03-21 00:02:23,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:23,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:24,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:24,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:02:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:24,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:02:24,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:24,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612356159] [2022-03-21 00:02:24,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612356159] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:02:24,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92893574] [2022-03-21 00:02:24,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:02:24,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:02:24,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:02:24,300 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) [2022-03-21 00:02:24,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-21 00:02:24,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:02:24,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:02:24,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-21 00:02:24,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:02:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:02:25,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:02:25,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92893574] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:25,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:02:25,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-03-21 00:02:25,046 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:02:25,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [375476322] [2022-03-21 00:02:25,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [375476322] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:25,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:25,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:02:25,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629596872] [2022-03-21 00:02:25,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:02:25,047 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:02:25,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:25,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:02:25,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-21 00:02:25,048 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) [2022-03-21 00:02:25,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:25,616 INFO L93 Difference]: Finished difference Result 2005 states and 2875 transitions. [2022-03-21 00:02:25,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:02:25,616 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 [2022-03-21 00:02:25,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:25,628 INFO L225 Difference]: With dead ends: 2005 [2022-03-21 00:02:25,628 INFO L226 Difference]: Without dead ends: 1985 [2022-03-21 00:02:25,631 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-21 00:02:25,634 INFO L913 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 [2022-03-21 00:02:25,635 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5633 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:02:25,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-03-21 00:02:25,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1985. [2022-03-21 00:02:25,980 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) [2022-03-21 00:02:25,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2848 transitions. [2022-03-21 00:02:25,991 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2848 transitions. Word has length 24 [2022-03-21 00:02:25,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:25,991 INFO L478 AbstractCegarLoop]: Abstraction has 1985 states and 2848 transitions. [2022-03-21 00:02:25,991 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) [2022-03-21 00:02:25,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2848 transitions. [2022-03-21 00:02:25,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-21 00:02:25,993 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:25,993 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:26,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-21 00:02:26,217 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 [2022-03-21 00:02:26,218 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:26,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:26,218 INFO L85 PathProgramCache]: Analyzing trace with hash -975584275, now seen corresponding path program 1 times [2022-03-21 00:02:26,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:26,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [229096646] [2022-03-21 00:02:26,222 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:02:26,223 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:02:26,223 INFO L85 PathProgramCache]: Analyzing trace with hash -975584275, now seen corresponding path program 2 times [2022-03-21 00:02:26,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:26,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686720293] [2022-03-21 00:02:26,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:26,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:26,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:26,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:02:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:26,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:02:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:02:26,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:26,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686720293] [2022-03-21 00:02:26,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686720293] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:02:26,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234609613] [2022-03-21 00:02:26,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:02:26,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:02:26,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:02:26,553 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) [2022-03-21 00:02:26,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-21 00:02:27,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:02:27,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:02:27,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-21 00:02:27,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:02:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:02:27,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:02:27,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234609613] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:27,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:02:27,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-03-21 00:02:27,293 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:02:27,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [229096646] [2022-03-21 00:02:27,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [229096646] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:27,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:27,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:02:27,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123676185] [2022-03-21 00:02:27,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:02:27,293 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:02:27,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:27,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:02:27,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-21 00:02:27,294 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) [2022-03-21 00:02:28,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:28,267 INFO L93 Difference]: Finished difference Result 5045 states and 7333 transitions. [2022-03-21 00:02:28,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:02:28,268 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 [2022-03-21 00:02:28,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:28,290 INFO L225 Difference]: With dead ends: 5045 [2022-03-21 00:02:28,290 INFO L226 Difference]: Without dead ends: 3732 [2022-03-21 00:02:28,298 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-21 00:02:28,299 INFO L913 BasicCegarLoop]: 3647 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, 6203 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 [2022-03-21 00:02:28,299 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2726 Valid, 6203 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-21 00:02:28,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3732 states. [2022-03-21 00:02:28,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3732 to 3711. [2022-03-21 00:02:28,916 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) [2022-03-21 00:02:28,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 5386 transitions. [2022-03-21 00:02:28,934 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 5386 transitions. Word has length 33 [2022-03-21 00:02:28,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:28,935 INFO L478 AbstractCegarLoop]: Abstraction has 3711 states and 5386 transitions. [2022-03-21 00:02:28,935 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) [2022-03-21 00:02:28,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 5386 transitions. [2022-03-21 00:02:28,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-21 00:02:28,942 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:28,943 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:28,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-21 00:02:29,165 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 [2022-03-21 00:02:29,165 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:29,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:29,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1905624997, now seen corresponding path program 1 times [2022-03-21 00:02:29,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:29,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1184713178] [2022-03-21 00:02:29,169 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:02:29,169 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:02:29,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1905624997, now seen corresponding path program 2 times [2022-03-21 00:02:29,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:29,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163808360] [2022-03-21 00:02:29,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:29,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:29,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:29,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:02:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:29,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:02:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:29,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-21 00:02:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:29,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-21 00:02:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:29,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:02:29,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:29,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163808360] [2022-03-21 00:02:29,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163808360] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:02:29,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229258540] [2022-03-21 00:02:29,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:02:29,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:02:29,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:02:29,615 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) [2022-03-21 00:02:29,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-21 00:02:30,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:02:30,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:02:30,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-21 00:02:30,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:02:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:02:30,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:02:30,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229258540] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:30,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:02:30,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-03-21 00:02:30,332 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:02:30,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1184713178] [2022-03-21 00:02:30,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1184713178] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:30,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:30,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:02:30,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876977610] [2022-03-21 00:02:30,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:02:30,332 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:02:30,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:30,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:02:30,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:02:30,333 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) [2022-03-21 00:02:30,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:30,982 INFO L93 Difference]: Finished difference Result 3829 states and 5529 transitions. [2022-03-21 00:02:30,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:02:30,982 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 [2022-03-21 00:02:30,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:31,001 INFO L225 Difference]: With dead ends: 3829 [2022-03-21 00:02:31,001 INFO L226 Difference]: Without dead ends: 3810 [2022-03-21 00:02:31,004 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:02:31,005 INFO L913 BasicCegarLoop]: 2842 mSDtfsCounter, 2820 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2820 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:02:31,005 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2820 Valid, 2912 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-21 00:02:31,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2022-03-21 00:02:31,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3804. [2022-03-21 00:02:31,618 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) [2022-03-21 00:02:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 5497 transitions. [2022-03-21 00:02:31,633 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 5497 transitions. Word has length 49 [2022-03-21 00:02:31,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:31,634 INFO L478 AbstractCegarLoop]: Abstraction has 3804 states and 5497 transitions. [2022-03-21 00:02:31,634 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) [2022-03-21 00:02:31,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 5497 transitions. [2022-03-21 00:02:31,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-21 00:02:31,637 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:31,637 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:31,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-21 00:02:31,850 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 [2022-03-21 00:02:31,850 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:31,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:31,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1919969906, now seen corresponding path program 1 times [2022-03-21 00:02:31,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:31,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [864774097] [2022-03-21 00:02:31,855 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:02:31,855 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:02:31,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1919969906, now seen corresponding path program 2 times [2022-03-21 00:02:31,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:31,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211612620] [2022-03-21 00:02:31,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:31,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:32,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:32,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:02:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:32,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:02:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:32,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-21 00:02:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:32,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-21 00:02:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:32,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:32,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:02:32,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:32,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211612620] [2022-03-21 00:02:32,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211612620] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:02:32,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345523722] [2022-03-21 00:02:32,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:02:32,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:02:32,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:02:32,342 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) [2022-03-21 00:02:32,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-21 00:02:33,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:02:33,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:02:33,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-21 00:02:33,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:02:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:02:33,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:02:33,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345523722] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:33,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:02:33,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-03-21 00:02:33,148 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:02:33,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [864774097] [2022-03-21 00:02:33,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [864774097] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:33,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:33,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:02:33,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356217826] [2022-03-21 00:02:33,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:02:33,149 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:02:33,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:33,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:02:33,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:02:33,150 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) [2022-03-21 00:02:34,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:34,231 INFO L93 Difference]: Finished difference Result 4627 states and 6683 transitions. [2022-03-21 00:02:34,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:02:34,232 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 [2022-03-21 00:02:34,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:34,252 INFO L225 Difference]: With dead ends: 4627 [2022-03-21 00:02:34,252 INFO L226 Difference]: Without dead ends: 4622 [2022-03-21 00:02:34,255 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:02:34,255 INFO L913 BasicCegarLoop]: 4117 mSDtfsCounter, 1721 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 6832 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-21 00:02:34,255 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 6832 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-21 00:02:34,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4622 states. [2022-03-21 00:02:35,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4622 to 4578. [2022-03-21 00:02:35,021 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) [2022-03-21 00:02:35,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 6622 transitions. [2022-03-21 00:02:35,037 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 6622 transitions. Word has length 49 [2022-03-21 00:02:35,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:35,038 INFO L478 AbstractCegarLoop]: Abstraction has 4578 states and 6622 transitions. [2022-03-21 00:02:35,043 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) [2022-03-21 00:02:35,043 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 6622 transitions. [2022-03-21 00:02:35,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-21 00:02:35,044 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:35,045 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:35,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-21 00:02:35,268 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 [2022-03-21 00:02:35,268 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:35,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:35,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1061683448, now seen corresponding path program 1 times [2022-03-21 00:02:35,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:35,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1775004075] [2022-03-21 00:02:35,271 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:02:35,271 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:02:35,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1061683448, now seen corresponding path program 2 times [2022-03-21 00:02:35,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:35,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94827991] [2022-03-21 00:02:35,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:35,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:35,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:35,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:02:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:35,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:02:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:35,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-21 00:02:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:35,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-21 00:02:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:35,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:02:35,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:35,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94827991] [2022-03-21 00:02:35,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94827991] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:02:35,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916054532] [2022-03-21 00:02:35,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:02:35,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:02:35,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:02:35,680 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) [2022-03-21 00:02:35,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-21 00:02:36,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:02:36,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:02:36,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-21 00:02:36,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:02:36,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:02:36,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:02:36,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916054532] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:36,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:02:36,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-03-21 00:02:36,484 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:02:36,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1775004075] [2022-03-21 00:02:36,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1775004075] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:36,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:36,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:02:36,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266965669] [2022-03-21 00:02:36,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:02:36,484 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:02:36,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:36,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:02:36,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-21 00:02:36,485 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) [2022-03-21 00:02:37,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:37,523 INFO L93 Difference]: Finished difference Result 4593 states and 6640 transitions. [2022-03-21 00:02:37,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:02:37,523 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 [2022-03-21 00:02:37,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:37,541 INFO L225 Difference]: With dead ends: 4593 [2022-03-21 00:02:37,542 INFO L226 Difference]: Without dead ends: 4552 [2022-03-21 00:02:37,544 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-21 00:02:37,545 INFO L913 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 [2022-03-21 00:02:37,545 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 11341 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:02:37,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4552 states. [2022-03-21 00:02:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4552 to 4552. [2022-03-21 00:02:38,343 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) [2022-03-21 00:02:38,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4552 states to 4552 states and 6585 transitions. [2022-03-21 00:02:38,356 INFO L78 Accepts]: Start accepts. Automaton has 4552 states and 6585 transitions. Word has length 50 [2022-03-21 00:02:38,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:38,356 INFO L478 AbstractCegarLoop]: Abstraction has 4552 states and 6585 transitions. [2022-03-21 00:02:38,356 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) [2022-03-21 00:02:38,356 INFO L276 IsEmpty]: Start isEmpty. Operand 4552 states and 6585 transitions. [2022-03-21 00:02:38,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-21 00:02:38,363 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:38,364 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:38,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-21 00:02:38,575 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 [2022-03-21 00:02:38,576 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:38,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:38,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1755528464, now seen corresponding path program 1 times [2022-03-21 00:02:38,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:38,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [791219189] [2022-03-21 00:02:38,578 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:02:38,578 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:02:38,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1755528464, now seen corresponding path program 2 times [2022-03-21 00:02:38,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:38,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810948729] [2022-03-21 00:02:38,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:38,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:38,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:38,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:02:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:38,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:02:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:38,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:02:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:02:38,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:38,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810948729] [2022-03-21 00:02:38,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810948729] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:02:38,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129799] [2022-03-21 00:02:38,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:02:38,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:02:38,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:02:38,909 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) [2022-03-21 00:02:38,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-21 00:02:39,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:02:39,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:02:39,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-21 00:02:39,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:02:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:02:39,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:02:39,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129799] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:39,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:02:39,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-03-21 00:02:39,644 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:02:39,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [791219189] [2022-03-21 00:02:39,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [791219189] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:39,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:39,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:02:39,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63490537] [2022-03-21 00:02:39,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:02:39,644 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:02:39,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:39,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:02:39,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-21 00:02:39,645 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) [2022-03-21 00:02:40,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:40,410 INFO L93 Difference]: Finished difference Result 7500 states and 10838 transitions. [2022-03-21 00:02:40,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:02:40,410 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 [2022-03-21 00:02:40,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:40,431 INFO L225 Difference]: With dead ends: 7500 [2022-03-21 00:02:40,431 INFO L226 Difference]: Without dead ends: 4606 [2022-03-21 00:02:40,443 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-21 00:02:40,444 INFO L913 BasicCegarLoop]: 2819 mSDtfsCounter, 2710 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2710 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:02:40,444 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2710 Valid, 2964 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-21 00:02:40,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2022-03-21 00:02:41,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 4521. [2022-03-21 00:02:41,193 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) [2022-03-21 00:02:41,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 6531 transitions. [2022-03-21 00:02:41,208 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 6531 transitions. Word has length 51 [2022-03-21 00:02:41,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:41,210 INFO L478 AbstractCegarLoop]: Abstraction has 4521 states and 6531 transitions. [2022-03-21 00:02:41,210 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) [2022-03-21 00:02:41,210 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 6531 transitions. [2022-03-21 00:02:41,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-21 00:02:41,212 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:41,212 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:41,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-21 00:02:41,434 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 [2022-03-21 00:02:41,434 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:41,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:41,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1561391810, now seen corresponding path program 1 times [2022-03-21 00:02:41,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:41,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [840545471] [2022-03-21 00:02:41,437 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:02:41,438 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:02:41,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1561391810, now seen corresponding path program 2 times [2022-03-21 00:02:41,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:41,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912733930] [2022-03-21 00:02:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:41,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:41,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:41,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:02:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:41,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:02:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:41,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:02:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:41,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:02:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:41,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:41,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:02:41,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:41,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912733930] [2022-03-21 00:02:41,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912733930] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:02:41,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554584829] [2022-03-21 00:02:41,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:02:41,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:02:41,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:02:41,818 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) [2022-03-21 00:02:41,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-21 00:02:42,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:02:42,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:02:42,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-21 00:02:42,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:02:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:02:42,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:02:42,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554584829] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:42,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:02:42,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-03-21 00:02:42,632 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:02:42,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [840545471] [2022-03-21 00:02:42,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [840545471] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:42,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:42,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:02:42,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26073028] [2022-03-21 00:02:42,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:02:42,633 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:02:42,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:42,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:02:42,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-21 00:02:42,633 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) [2022-03-21 00:02:43,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:43,622 INFO L93 Difference]: Finished difference Result 4536 states and 6549 transitions. [2022-03-21 00:02:43,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:02:43,623 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 [2022-03-21 00:02:43,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:43,641 INFO L225 Difference]: With dead ends: 4536 [2022-03-21 00:02:43,641 INFO L226 Difference]: Without dead ends: 4518 [2022-03-21 00:02:43,644 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-21 00:02:43,645 INFO L913 BasicCegarLoop]: 2811 mSDtfsCounter, 5 mSDsluCounter, 8404 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:02:43,645 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 11215 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:02:43,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2022-03-21 00:02:44,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 4518. [2022-03-21 00:02:44,382 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) [2022-03-21 00:02:44,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4518 states to 4518 states and 6526 transitions. [2022-03-21 00:02:44,395 INFO L78 Accepts]: Start accepts. Automaton has 4518 states and 6526 transitions. Word has length 57 [2022-03-21 00:02:44,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:44,395 INFO L478 AbstractCegarLoop]: Abstraction has 4518 states and 6526 transitions. [2022-03-21 00:02:44,396 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) [2022-03-21 00:02:44,396 INFO L276 IsEmpty]: Start isEmpty. Operand 4518 states and 6526 transitions. [2022-03-21 00:02:44,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-21 00:02:44,397 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:44,397 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:44,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-21 00:02:44,619 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 [2022-03-21 00:02:44,619 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:44,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:44,620 INFO L85 PathProgramCache]: Analyzing trace with hash 111621356, now seen corresponding path program 1 times [2022-03-21 00:02:44,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:44,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1787425323] [2022-03-21 00:02:44,624 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:02:44,625 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:02:44,625 INFO L85 PathProgramCache]: Analyzing trace with hash 111621356, now seen corresponding path program 2 times [2022-03-21 00:02:44,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:44,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147386688] [2022-03-21 00:02:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:44,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:44,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:44,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:02:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:44,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:02:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:44,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-21 00:02:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:44,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:02:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:44,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:02:44,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:44,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147386688] [2022-03-21 00:02:44,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147386688] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:02:44,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625721632] [2022-03-21 00:02:44,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:02:44,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:02:44,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:02:44,998 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) [2022-03-21 00:02:45,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-21 00:02:45,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:02:45,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:02:45,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-21 00:02:45,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:02:45,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:02:45,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:02:45,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625721632] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:45,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:02:45,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-03-21 00:02:45,804 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:02:45,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1787425323] [2022-03-21 00:02:45,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1787425323] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:45,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:45,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:02:45,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015636552] [2022-03-21 00:02:45,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:02:45,804 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:02:45,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:45,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:02:45,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-21 00:02:45,805 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) [2022-03-21 00:02:46,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:46,658 INFO L93 Difference]: Finished difference Result 4533 states and 6544 transitions. [2022-03-21 00:02:46,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:02:46,658 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 [2022-03-21 00:02:46,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:46,675 INFO L225 Difference]: With dead ends: 4533 [2022-03-21 00:02:46,675 INFO L226 Difference]: Without dead ends: 4509 [2022-03-21 00:02:46,678 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-21 00:02:46,678 INFO L913 BasicCegarLoop]: 2806 mSDtfsCounter, 5 mSDsluCounter, 8390 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:02:46,679 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 11196 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:02:46,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2022-03-21 00:02:47,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 4509. [2022-03-21 00:02:47,453 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) [2022-03-21 00:02:47,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4509 states to 4509 states and 6514 transitions. [2022-03-21 00:02:47,469 INFO L78 Accepts]: Start accepts. Automaton has 4509 states and 6514 transitions. Word has length 54 [2022-03-21 00:02:47,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:47,469 INFO L478 AbstractCegarLoop]: Abstraction has 4509 states and 6514 transitions. [2022-03-21 00:02:47,469 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) [2022-03-21 00:02:47,469 INFO L276 IsEmpty]: Start isEmpty. Operand 4509 states and 6514 transitions. [2022-03-21 00:02:47,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-21 00:02:47,470 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:47,471 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:47,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-21 00:02:47,693 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 [2022-03-21 00:02:47,693 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:47,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:47,694 INFO L85 PathProgramCache]: Analyzing trace with hash -851908546, now seen corresponding path program 1 times [2022-03-21 00:02:47,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:47,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1971550347] [2022-03-21 00:02:47,696 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:02:47,696 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:02:47,696 INFO L85 PathProgramCache]: Analyzing trace with hash -851908546, now seen corresponding path program 2 times [2022-03-21 00:02:47,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:47,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107559259] [2022-03-21 00:02:47,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:47,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:47,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:47,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:02:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:47,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:02:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:47,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:02:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:02:48,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:48,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107559259] [2022-03-21 00:02:48,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107559259] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:02:48,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002598527] [2022-03-21 00:02:48,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:02:48,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:02:48,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:02:48,013 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) [2022-03-21 00:02:48,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-21 00:02:48,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:02:48,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:02:48,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-21 00:02:48,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:02:48,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:02:48,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:02:48,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002598527] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:48,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:02:48,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-03-21 00:02:48,851 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:02:48,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1971550347] [2022-03-21 00:02:48,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1971550347] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:48,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:48,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:02:48,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995437493] [2022-03-21 00:02:48,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:02:48,852 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:02:48,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:48,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:02:48,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-21 00:02:48,853 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) [2022-03-21 00:02:49,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:49,782 INFO L93 Difference]: Finished difference Result 4523 states and 6532 transitions. [2022-03-21 00:02:49,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:02:49,783 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 [2022-03-21 00:02:49,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:49,799 INFO L225 Difference]: With dead ends: 4523 [2022-03-21 00:02:49,799 INFO L226 Difference]: Without dead ends: 4520 [2022-03-21 00:02:49,801 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-21 00:02:49,802 INFO L913 BasicCegarLoop]: 2778 mSDtfsCounter, 33 mSDsluCounter, 2713 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 5491 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:02:49,802 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 5491 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:02:49,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2022-03-21 00:02:50,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 4517. [2022-03-21 00:02:50,580 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) [2022-03-21 00:02:50,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 6526 transitions. [2022-03-21 00:02:50,594 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 6526 transitions. Word has length 51 [2022-03-21 00:02:50,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:50,594 INFO L478 AbstractCegarLoop]: Abstraction has 4517 states and 6526 transitions. [2022-03-21 00:02:50,595 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) [2022-03-21 00:02:50,595 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 6526 transitions. [2022-03-21 00:02:50,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-21 00:02:50,596 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:50,596 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:50,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-21 00:02:50,819 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 [2022-03-21 00:02:50,819 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:50,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:50,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1656471014, now seen corresponding path program 1 times [2022-03-21 00:02:50,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:50,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [324220837] [2022-03-21 00:02:50,823 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:02:50,823 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:02:50,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1656471014, now seen corresponding path program 2 times [2022-03-21 00:02:50,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:50,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830389564] [2022-03-21 00:02:50,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:50,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:51,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:51,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:02:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:51,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:02:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:51,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:02:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:51,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-21 00:02:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:51,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:51,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-21 00:02:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:51,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:51,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:02:51,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:51,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830389564] [2022-03-21 00:02:51,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830389564] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:02:51,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676261840] [2022-03-21 00:02:51,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:02:51,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:02:51,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:02:51,312 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) [2022-03-21 00:02:51,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-21 00:02:52,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:02:52,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:02:52,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-21 00:02:52,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:02:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:02:52,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:02:52,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676261840] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:52,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:02:52,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-03-21 00:02:52,309 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:02:52,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [324220837] [2022-03-21 00:02:52,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [324220837] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:52,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:52,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:02:52,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005259269] [2022-03-21 00:02:52,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:02:52,310 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:02:52,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:52,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:02:52,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:02:52,311 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) [2022-03-21 00:02:53,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:53,087 INFO L93 Difference]: Finished difference Result 8386 states and 12110 transitions. [2022-03-21 00:02:53,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:02:53,088 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 [2022-03-21 00:02:53,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:53,104 INFO L225 Difference]: With dead ends: 8386 [2022-03-21 00:02:53,104 INFO L226 Difference]: Without dead ends: 4521 [2022-03-21 00:02:53,117 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:02:53,118 INFO L913 BasicCegarLoop]: 2780 mSDtfsCounter, 3 mSDsluCounter, 8336 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11116 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:02:53,118 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 11116 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-21 00:02:53,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2022-03-21 00:02:53,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 4521. [2022-03-21 00:02:53,799 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) [2022-03-21 00:02:53,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 6531 transitions. [2022-03-21 00:02:53,813 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 6531 transitions. Word has length 69 [2022-03-21 00:02:53,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:53,814 INFO L478 AbstractCegarLoop]: Abstraction has 4521 states and 6531 transitions. [2022-03-21 00:02:53,814 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) [2022-03-21 00:02:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 6531 transitions. [2022-03-21 00:02:53,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-21 00:02:53,815 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:53,815 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:53,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-21 00:02:54,031 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 [2022-03-21 00:02:54,031 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:54,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:54,032 INFO L85 PathProgramCache]: Analyzing trace with hash 454819355, now seen corresponding path program 1 times [2022-03-21 00:02:54,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:54,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [441985471] [2022-03-21 00:02:54,034 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:02:54,034 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:02:54,034 INFO L85 PathProgramCache]: Analyzing trace with hash 454819355, now seen corresponding path program 2 times [2022-03-21 00:02:54,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:54,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609318734] [2022-03-21 00:02:54,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:54,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:54,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:54,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:02:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:54,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:02:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:54,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:02:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:54,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-21 00:02:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:54,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:54,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-21 00:02:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:54,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:54,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:02:54,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:54,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609318734] [2022-03-21 00:02:54,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609318734] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:02:54,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130939934] [2022-03-21 00:02:54,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:02:54,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:02:54,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:02:54,429 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) [2022-03-21 00:02:54,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-21 00:02:55,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:02:55,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:02:55,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-21 00:02:55,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:02:55,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:02:55,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:02:55,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130939934] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:55,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:02:55,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-03-21 00:02:55,364 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:02:55,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [441985471] [2022-03-21 00:02:55,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [441985471] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:55,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:55,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-21 00:02:55,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552965743] [2022-03-21 00:02:55,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:02:55,365 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-21 00:02:55,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:55,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-21 00:02:55,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:02:55,365 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) [2022-03-21 00:02:56,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:56,153 INFO L93 Difference]: Finished difference Result 7729 states and 11118 transitions. [2022-03-21 00:02:56,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-21 00:02:56,153 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 [2022-03-21 00:02:56,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:56,173 INFO L225 Difference]: With dead ends: 7729 [2022-03-21 00:02:56,173 INFO L226 Difference]: Without dead ends: 4396 [2022-03-21 00:02:56,187 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-21 00:02:56,187 INFO L913 BasicCegarLoop]: 2776 mSDtfsCounter, 5 mSDsluCounter, 16628 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19404 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:02:56,187 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 19404 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-21 00:02:56,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4396 states. [2022-03-21 00:02:56,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4396 to 4393. [2022-03-21 00:02:56,968 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) [2022-03-21 00:02:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4393 states to 4393 states and 6309 transitions. [2022-03-21 00:02:56,982 INFO L78 Accepts]: Start accepts. Automaton has 4393 states and 6309 transitions. Word has length 69 [2022-03-21 00:02:56,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:56,983 INFO L478 AbstractCegarLoop]: Abstraction has 4393 states and 6309 transitions. [2022-03-21 00:02:56,983 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) [2022-03-21 00:02:56,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4393 states and 6309 transitions. [2022-03-21 00:02:56,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-21 00:02:56,984 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:56,984 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:57,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-21 00:02:57,185 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 [2022-03-21 00:02:57,185 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:57,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:57,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1515186020, now seen corresponding path program 1 times [2022-03-21 00:02:57,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:57,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [699295990] [2022-03-21 00:02:57,188 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:02:57,188 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:02:57,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1515186020, now seen corresponding path program 2 times [2022-03-21 00:02:57,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:57,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458853886] [2022-03-21 00:02:57,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:57,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:57,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:57,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:02:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:57,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:02:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:57,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-21 00:02:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:57,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-21 00:02:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:57,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:57,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:02:57,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:57,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458853886] [2022-03-21 00:02:57,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458853886] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:02:57,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077425130] [2022-03-21 00:02:57,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:02:57,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:02:57,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:02:57,582 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) [2022-03-21 00:02:57,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-21 00:02:58,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:02:58,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:02:58,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-21 00:02:58,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:02:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:02:58,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:02:58,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077425130] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:58,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:02:58,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-03-21 00:02:58,434 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:02:58,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [699295990] [2022-03-21 00:02:58,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [699295990] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:58,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:58,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-21 00:02:58,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036295311] [2022-03-21 00:02:58,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:02:58,435 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-21 00:02:58,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:58,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-21 00:02:58,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-03-21 00:02:58,435 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) [2022-03-21 00:02:59,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:59,197 INFO L93 Difference]: Finished difference Result 4436 states and 6360 transitions. [2022-03-21 00:02:59,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-21 00:02:59,198 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 [2022-03-21 00:02:59,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:59,211 INFO L225 Difference]: With dead ends: 4436 [2022-03-21 00:02:59,211 INFO L226 Difference]: Without dead ends: 4392 [2022-03-21 00:02:59,213 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-03-21 00:02:59,214 INFO L913 BasicCegarLoop]: 2772 mSDtfsCounter, 10 mSDsluCounter, 11073 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 13845 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:02:59,214 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 13845 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-21 00:02:59,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2022-03-21 00:02:59,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 4390. [2022-03-21 00:02:59,916 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) [2022-03-21 00:02:59,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4390 states to 4390 states and 6305 transitions. [2022-03-21 00:02:59,929 INFO L78 Accepts]: Start accepts. Automaton has 4390 states and 6305 transitions. Word has length 52 [2022-03-21 00:02:59,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:59,930 INFO L478 AbstractCegarLoop]: Abstraction has 4390 states and 6305 transitions. [2022-03-21 00:02:59,930 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) [2022-03-21 00:02:59,930 INFO L276 IsEmpty]: Start isEmpty. Operand 4390 states and 6305 transitions. [2022-03-21 00:02:59,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-21 00:02:59,931 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:59,931 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:59,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-21 00:03:00,133 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 [2022-03-21 00:03:00,133 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:03:00,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:03:00,134 INFO L85 PathProgramCache]: Analyzing trace with hash 851781494, now seen corresponding path program 1 times [2022-03-21 00:03:00,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:00,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1495224585] [2022-03-21 00:03:00,136 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:03:00,136 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:03:00,136 INFO L85 PathProgramCache]: Analyzing trace with hash 851781494, now seen corresponding path program 2 times [2022-03-21 00:03:00,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:03:00,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570545736] [2022-03-21 00:03:00,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:03:00,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:03:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:00,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:03:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:03:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:00,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:03:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:00,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-21 00:03:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:00,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-21 00:03:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:00,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:00,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:03:00,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:03:00,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570545736] [2022-03-21 00:03:00,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570545736] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:03:00,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273322685] [2022-03-21 00:03:00,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:03:00,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:03:00,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:03:00,497 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) [2022-03-21 00:03:00,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-21 00:03:01,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:03:01,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:03:01,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-21 00:03:01,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:03:01,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:03:01,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:03:01,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273322685] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:01,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:03:01,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-03-21 00:03:01,392 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:03:01,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1495224585] [2022-03-21 00:03:01,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1495224585] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:01,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:01,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-21 00:03:01,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215909554] [2022-03-21 00:03:01,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:03:01,392 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-21 00:03:01,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:01,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-21 00:03:01,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:03:01,393 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) [2022-03-21 00:03:02,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:03:02,306 INFO L93 Difference]: Finished difference Result 4408 states and 6326 transitions. [2022-03-21 00:03:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-21 00:03:02,306 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 [2022-03-21 00:03:02,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:03:02,320 INFO L225 Difference]: With dead ends: 4408 [2022-03-21 00:03:02,320 INFO L226 Difference]: Without dead ends: 4388 [2022-03-21 00:03:02,323 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-21 00:03:02,324 INFO L913 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 [2022-03-21 00:03:02,324 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 19434 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:03:02,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2022-03-21 00:03:02,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 4388. [2022-03-21 00:03:02,989 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) [2022-03-21 00:03:03,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 6301 transitions. [2022-03-21 00:03:03,001 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 6301 transitions. Word has length 54 [2022-03-21 00:03:03,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:03:03,002 INFO L478 AbstractCegarLoop]: Abstraction has 4388 states and 6301 transitions. [2022-03-21 00:03:03,002 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) [2022-03-21 00:03:03,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 6301 transitions. [2022-03-21 00:03:03,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-21 00:03:03,003 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:03:03,003 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:03:03,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-21 00:03:03,223 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 [2022-03-21 00:03:03,223 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:03:03,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:03:03,224 INFO L85 PathProgramCache]: Analyzing trace with hash 413420634, now seen corresponding path program 1 times [2022-03-21 00:03:03,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:03,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [516786444] [2022-03-21 00:03:03,226 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:03:03,226 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:03:03,226 INFO L85 PathProgramCache]: Analyzing trace with hash 413420634, now seen corresponding path program 2 times [2022-03-21 00:03:03,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:03:03,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066966554] [2022-03-21 00:03:03,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:03:03,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:03:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:03:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:03,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:03:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:03,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:03:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:03,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:03:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:03,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:03,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:03:03,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:03:03,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066966554] [2022-03-21 00:03:03,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066966554] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:03:03,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034363250] [2022-03-21 00:03:03,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:03:03,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:03:03,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:03:03,567 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) [2022-03-21 00:03:03,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-21 00:03:04,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:03:04,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:03:04,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-21 00:03:04,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:03:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:03:04,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:03:04,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034363250] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:04,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:03:04,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-03-21 00:03:04,495 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:03:04,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [516786444] [2022-03-21 00:03:04,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [516786444] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:04,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:04,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-21 00:03:04,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874291423] [2022-03-21 00:03:04,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:03:04,495 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-21 00:03:04,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:04,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-21 00:03:04,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-03-21 00:03:04,496 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) [2022-03-21 00:03:05,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:03:05,325 INFO L93 Difference]: Finished difference Result 4403 states and 6319 transitions. [2022-03-21 00:03:05,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-21 00:03:05,325 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 [2022-03-21 00:03:05,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:03:05,339 INFO L225 Difference]: With dead ends: 4403 [2022-03-21 00:03:05,339 INFO L226 Difference]: Without dead ends: 4382 [2022-03-21 00:03:05,342 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:03:05,343 INFO L913 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 [2022-03-21 00:03:05,343 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 19342 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:03:05,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2022-03-21 00:03:06,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 4382. [2022-03-21 00:03:06,077 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) [2022-03-21 00:03:06,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 6292 transitions. [2022-03-21 00:03:06,088 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 6292 transitions. Word has length 53 [2022-03-21 00:03:06,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:03:06,088 INFO L478 AbstractCegarLoop]: Abstraction has 4382 states and 6292 transitions. [2022-03-21 00:03:06,088 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) [2022-03-21 00:03:06,089 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 6292 transitions. [2022-03-21 00:03:06,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-21 00:03:06,090 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:03:06,090 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:03:06,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-21 00:03:06,312 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 [2022-03-21 00:03:06,313 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:03:06,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:03:06,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1241941963, now seen corresponding path program 1 times [2022-03-21 00:03:06,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:06,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1594171469] [2022-03-21 00:03:06,315 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:03:06,315 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:03:06,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1241941963, now seen corresponding path program 2 times [2022-03-21 00:03:06,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:03:06,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693323330] [2022-03-21 00:03:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:03:06,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:03:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:06,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:03:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:06,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:03:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:06,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:03:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:06,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:03:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:06,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:06,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:03:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:06,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:03:06,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:03:06,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693323330] [2022-03-21 00:03:06,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693323330] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:03:06,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927809225] [2022-03-21 00:03:06,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:03:06,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:03:06,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:03:06,720 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) [2022-03-21 00:03:06,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-21 00:03:07,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:03:07,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:03:07,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 1682 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-21 00:03:07,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:03:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:03:07,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:03:07,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927809225] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:07,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:03:07,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-03-21 00:03:07,650 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:03:07,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1594171469] [2022-03-21 00:03:07,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1594171469] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:07,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:07,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-21 00:03:07,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887725226] [2022-03-21 00:03:07,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:03:07,651 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-21 00:03:07,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:07,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-21 00:03:07,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:03:07,651 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) [2022-03-21 00:03:08,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:03:08,313 INFO L93 Difference]: Finished difference Result 4427 states and 6345 transitions. [2022-03-21 00:03:08,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-21 00:03:08,314 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 [2022-03-21 00:03:08,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:03:08,327 INFO L225 Difference]: With dead ends: 4427 [2022-03-21 00:03:08,327 INFO L226 Difference]: Without dead ends: 4382 [2022-03-21 00:03:08,330 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-03-21 00:03:08,330 INFO L913 BasicCegarLoop]: 2766 mSDtfsCounter, 25 mSDsluCounter, 11008 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 13774 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:03:08,331 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 13774 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-21 00:03:08,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2022-03-21 00:03:09,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 4382. [2022-03-21 00:03:09,053 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) [2022-03-21 00:03:09,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 6291 transitions. [2022-03-21 00:03:09,062 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 6291 transitions. Word has length 60 [2022-03-21 00:03:09,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:03:09,062 INFO L478 AbstractCegarLoop]: Abstraction has 4382 states and 6291 transitions. [2022-03-21 00:03:09,063 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) [2022-03-21 00:03:09,063 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 6291 transitions. [2022-03-21 00:03:09,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-21 00:03:09,064 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:03:09,064 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:03:09,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-21 00:03:09,279 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 [2022-03-21 00:03:09,279 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:03:09,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:03:09,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2054843116, now seen corresponding path program 1 times [2022-03-21 00:03:09,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:09,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1948295327] [2022-03-21 00:03:09,282 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:03:09,282 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:03:09,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2054843116, now seen corresponding path program 2 times [2022-03-21 00:03:09,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:03:09,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099047216] [2022-03-21 00:03:09,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:03:09,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:03:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:09,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:03:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:09,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:03:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:09,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:03:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:09,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:03:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:09,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-21 00:03:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:09,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:09,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-21 00:03:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:09,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:09,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:03:09,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:03:09,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099047216] [2022-03-21 00:03:09,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099047216] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:03:09,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640432550] [2022-03-21 00:03:09,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:03:09,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:03:09,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:03:09,610 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) [2022-03-21 00:03:09,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-21 00:03:10,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:03:10,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:03:10,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-21 00:03:10,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:03:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:03:10,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:03:10,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640432550] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:10,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:03:10,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-03-21 00:03:10,583 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:03:10,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1948295327] [2022-03-21 00:03:10,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1948295327] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:10,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:10,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:03:10,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884747856] [2022-03-21 00:03:10,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:03:10,584 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:03:10,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:10,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:03:10,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:03:10,584 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) [2022-03-21 00:03:11,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:03:11,704 INFO L93 Difference]: Finished difference Result 7277 states and 10413 transitions. [2022-03-21 00:03:11,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:03:11,704 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 [2022-03-21 00:03:11,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:03:11,727 INFO L225 Difference]: With dead ends: 7277 [2022-03-21 00:03:11,728 INFO L226 Difference]: Without dead ends: 6964 [2022-03-21 00:03:11,733 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:03:11,734 INFO L913 BasicCegarLoop]: 3124 mSDtfsCounter, 2635 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2635 SdHoareTripleChecker+Valid, 5117 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:03:11,734 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2635 Valid, 5117 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-21 00:03:11,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6964 states. [2022-03-21 00:03:12,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6964 to 6826. [2022-03-21 00:03:12,884 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) [2022-03-21 00:03:12,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 9870 transitions. [2022-03-21 00:03:12,905 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 9870 transitions. Word has length 72 [2022-03-21 00:03:12,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:03:12,905 INFO L478 AbstractCegarLoop]: Abstraction has 6826 states and 9870 transitions. [2022-03-21 00:03:12,906 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) [2022-03-21 00:03:12,906 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 9870 transitions. [2022-03-21 00:03:12,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-21 00:03:12,907 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:03:12,907 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:03:12,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-21 00:03:13,119 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 [2022-03-21 00:03:13,120 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:03:13,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:03:13,120 INFO L85 PathProgramCache]: Analyzing trace with hash 898925172, now seen corresponding path program 1 times [2022-03-21 00:03:13,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:13,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [273502001] [2022-03-21 00:03:13,123 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:03:13,123 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:03:13,123 INFO L85 PathProgramCache]: Analyzing trace with hash 898925172, now seen corresponding path program 2 times [2022-03-21 00:03:13,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:03:13,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619411614] [2022-03-21 00:03:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:03:13,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:03:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:13,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:03:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:13,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:03:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:13,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:03:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:13,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:03:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:13,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:03:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:13,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:03:13,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:03:13,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619411614] [2022-03-21 00:03:13,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619411614] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:03:13,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278699626] [2022-03-21 00:03:13,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:03:13,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:03:13,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:03:13,489 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) [2022-03-21 00:03:13,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-21 00:03:14,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:03:14,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:03:14,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-21 00:03:14,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:03:14,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:03:14,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:03:14,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278699626] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:14,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:03:14,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-03-21 00:03:14,476 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:03:14,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [273502001] [2022-03-21 00:03:14,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [273502001] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:14,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:14,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-21 00:03:14,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289300458] [2022-03-21 00:03:14,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:03:14,477 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-21 00:03:14,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:14,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-21 00:03:14,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:03:14,477 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) [2022-03-21 00:03:15,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:03:15,727 INFO L93 Difference]: Finished difference Result 6967 states and 10051 transitions. [2022-03-21 00:03:15,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-21 00:03:15,728 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 [2022-03-21 00:03:15,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:03:15,751 INFO L225 Difference]: With dead ends: 6967 [2022-03-21 00:03:15,752 INFO L226 Difference]: Without dead ends: 6855 [2022-03-21 00:03:15,757 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-03-21 00:03:15,757 INFO L913 BasicCegarLoop]: 2776 mSDtfsCounter, 90 mSDsluCounter, 10937 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 13713 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:03:15,757 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 13713 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-21 00:03:15,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2022-03-21 00:03:16,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 6828. [2022-03-21 00:03:16,961 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) [2022-03-21 00:03:16,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6828 states to 6828 states and 9871 transitions. [2022-03-21 00:03:16,981 INFO L78 Accepts]: Start accepts. Automaton has 6828 states and 9871 transitions. Word has length 60 [2022-03-21 00:03:16,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:03:16,981 INFO L478 AbstractCegarLoop]: Abstraction has 6828 states and 9871 transitions. [2022-03-21 00:03:16,981 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) [2022-03-21 00:03:16,981 INFO L276 IsEmpty]: Start isEmpty. Operand 6828 states and 9871 transitions. [2022-03-21 00:03:16,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-21 00:03:16,983 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:03:16,983 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:03:17,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-03-21 00:03:17,207 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 [2022-03-21 00:03:17,207 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:03:17,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:03:17,208 INFO L85 PathProgramCache]: Analyzing trace with hash 696011681, now seen corresponding path program 1 times [2022-03-21 00:03:17,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:17,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [245841062] [2022-03-21 00:03:17,210 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:03:17,210 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:03:17,210 INFO L85 PathProgramCache]: Analyzing trace with hash 696011681, now seen corresponding path program 2 times [2022-03-21 00:03:17,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:03:17,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107676800] [2022-03-21 00:03:17,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:03:17,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:03:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:17,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:03:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:17,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:03:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:17,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:03:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:17,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:03:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:17,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:17,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:17,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:03:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:17,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:03:17,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:03:17,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107676800] [2022-03-21 00:03:17,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107676800] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:03:17,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058436328] [2022-03-21 00:03:17,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:03:17,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:03:17,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:03:17,662 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) [2022-03-21 00:03:17,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-21 00:03:18,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:03:18,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:03:18,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-21 00:03:18,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:03:18,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:03:18,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:03:18,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058436328] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:18,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:03:18,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-03-21 00:03:18,687 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:03:18,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [245841062] [2022-03-21 00:03:18,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [245841062] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:18,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:18,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-21 00:03:18,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127983404] [2022-03-21 00:03:18,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:03:18,687 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-21 00:03:18,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:18,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-21 00:03:18,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-03-21 00:03:18,688 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) [2022-03-21 00:03:19,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:03:19,817 INFO L93 Difference]: Finished difference Result 6884 states and 9934 transitions. [2022-03-21 00:03:19,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-21 00:03:19,817 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 [2022-03-21 00:03:19,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:03:19,838 INFO L225 Difference]: With dead ends: 6884 [2022-03-21 00:03:19,838 INFO L226 Difference]: Without dead ends: 6835 [2022-03-21 00:03:19,842 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-03-21 00:03:19,842 INFO L913 BasicCegarLoop]: 2757 mSDtfsCounter, 45 mSDsluCounter, 13728 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 16485 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:03:19,842 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 16485 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-21 00:03:19,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6835 states. [2022-03-21 00:03:20,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6835 to 6833. [2022-03-21 00:03:21,000 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) [2022-03-21 00:03:21,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6833 states to 6833 states and 9876 transitions. [2022-03-21 00:03:21,019 INFO L78 Accepts]: Start accepts. Automaton has 6833 states and 9876 transitions. Word has length 63 [2022-03-21 00:03:21,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:03:21,019 INFO L478 AbstractCegarLoop]: Abstraction has 6833 states and 9876 transitions. [2022-03-21 00:03:21,019 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) [2022-03-21 00:03:21,019 INFO L276 IsEmpty]: Start isEmpty. Operand 6833 states and 9876 transitions. [2022-03-21 00:03:21,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-21 00:03:21,020 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:03:21,020 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:03:21,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-21 00:03:21,221 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 [2022-03-21 00:03:21,221 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:03:21,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:03:21,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1314092160, now seen corresponding path program 1 times [2022-03-21 00:03:21,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:21,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [979274929] [2022-03-21 00:03:21,235 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:03:21,236 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:03:21,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1314092160, now seen corresponding path program 2 times [2022-03-21 00:03:21,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:03:21,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035192812] [2022-03-21 00:03:21,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:03:21,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:03:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:21,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:03:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:21,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:03:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:21,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:03:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:21,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:03:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:21,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:21,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:21,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:03:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:21,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:21,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:03:21,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:03:21,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035192812] [2022-03-21 00:03:21,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035192812] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:03:21,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592116229] [2022-03-21 00:03:21,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:03:21,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:03:21,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:03:21,621 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) [2022-03-21 00:03:21,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-21 00:03:22,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:03:22,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:03:22,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-21 00:03:22,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:03:22,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:03:22,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:03:22,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592116229] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:22,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:03:22,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2022-03-21 00:03:22,685 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:03:22,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [979274929] [2022-03-21 00:03:22,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [979274929] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:22,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:22,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-21 00:03:22,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750777158] [2022-03-21 00:03:22,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:03:22,685 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-21 00:03:22,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:22,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-21 00:03:22,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-03-21 00:03:22,686 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) [2022-03-21 00:03:24,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:03:24,015 INFO L93 Difference]: Finished difference Result 7125 states and 10235 transitions. [2022-03-21 00:03:24,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-21 00:03:24,016 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 [2022-03-21 00:03:24,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:03:24,044 INFO L225 Difference]: With dead ends: 7125 [2022-03-21 00:03:24,044 INFO L226 Difference]: Without dead ends: 6826 [2022-03-21 00:03:24,050 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-03-21 00:03:24,050 INFO L913 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 [2022-03-21 00:03:24,051 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 24968 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:03:24,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6826 states. [2022-03-21 00:03:25,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6826 to 6826. [2022-03-21 00:03:25,228 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) [2022-03-21 00:03:25,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 9866 transitions. [2022-03-21 00:03:25,249 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 9866 transitions. Word has length 63 [2022-03-21 00:03:25,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:03:25,249 INFO L478 AbstractCegarLoop]: Abstraction has 6826 states and 9866 transitions. [2022-03-21 00:03:25,249 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) [2022-03-21 00:03:25,249 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 9866 transitions. [2022-03-21 00:03:25,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-21 00:03:25,251 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:03:25,251 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:03:25,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-21 00:03:25,476 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 [2022-03-21 00:03:25,476 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:03:25,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:03:25,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1827694763, now seen corresponding path program 1 times [2022-03-21 00:03:25,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:25,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [408337141] [2022-03-21 00:03:25,478 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:03:25,478 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:03:25,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1827694763, now seen corresponding path program 2 times [2022-03-21 00:03:25,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:03:25,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445274729] [2022-03-21 00:03:25,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:03:25,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:03:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:25,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:03:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:25,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:03:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:25,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:03:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:25,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:03:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:25,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:03:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:25,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:25,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:03:25,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:03:25,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445274729] [2022-03-21 00:03:25,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445274729] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:03:25,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672935372] [2022-03-21 00:03:25,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:03:25,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:03:25,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:03:25,868 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) [2022-03-21 00:03:25,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-21 00:03:26,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:03:26,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:03:26,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1623 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-21 00:03:26,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:03:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:03:26,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:03:26,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672935372] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:26,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:03:26,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-03-21 00:03:26,967 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:03:26,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [408337141] [2022-03-21 00:03:26,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [408337141] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:26,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:26,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-21 00:03:26,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164061934] [2022-03-21 00:03:26,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:03:26,967 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-21 00:03:26,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:26,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-21 00:03:26,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-21 00:03:26,968 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) [2022-03-21 00:03:28,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:03:28,290 INFO L93 Difference]: Finished difference Result 6844 states and 9887 transitions. [2022-03-21 00:03:28,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-21 00:03:28,291 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 [2022-03-21 00:03:28,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:03:28,314 INFO L225 Difference]: With dead ends: 6844 [2022-03-21 00:03:28,314 INFO L226 Difference]: Without dead ends: 6824 [2022-03-21 00:03:28,319 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-03-21 00:03:28,320 INFO L913 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 [2022-03-21 00:03:28,320 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 19222 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:03:28,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6824 states. [2022-03-21 00:03:29,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6824 to 6824. [2022-03-21 00:03:29,469 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) [2022-03-21 00:03:29,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6824 states to 6824 states and 9862 transitions. [2022-03-21 00:03:29,489 INFO L78 Accepts]: Start accepts. Automaton has 6824 states and 9862 transitions. Word has length 62 [2022-03-21 00:03:29,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:03:29,489 INFO L478 AbstractCegarLoop]: Abstraction has 6824 states and 9862 transitions. [2022-03-21 00:03:29,489 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) [2022-03-21 00:03:29,489 INFO L276 IsEmpty]: Start isEmpty. Operand 6824 states and 9862 transitions. [2022-03-21 00:03:29,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-21 00:03:29,492 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:03:29,492 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:03:29,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-21 00:03:29,716 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 [2022-03-21 00:03:29,716 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:03:29,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:03:29,716 INFO L85 PathProgramCache]: Analyzing trace with hash 502563313, now seen corresponding path program 1 times [2022-03-21 00:03:29,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:29,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2096340635] [2022-03-21 00:03:29,719 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:03:29,719 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:03:29,719 INFO L85 PathProgramCache]: Analyzing trace with hash 502563313, now seen corresponding path program 2 times [2022-03-21 00:03:29,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:03:29,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623057068] [2022-03-21 00:03:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:03:29,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:03:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:29,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:03:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:29,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:03:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:29,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:03:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:30,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:03:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:30,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:30,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:03:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:30,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:03:30,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:03:30,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623057068] [2022-03-21 00:03:30,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623057068] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:03:30,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164725646] [2022-03-21 00:03:30,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:03:30,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:03:30,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:03:30,049 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) [2022-03-21 00:03:30,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-21 00:03:30,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:03:30,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:03:30,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-21 00:03:30,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:03:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:03:31,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:03:31,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164725646] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:31,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:03:31,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-03-21 00:03:31,014 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:03:31,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2096340635] [2022-03-21 00:03:31,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2096340635] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:31,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:31,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:03:31,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068772695] [2022-03-21 00:03:31,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:03:31,014 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:03:31,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:31,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:03:31,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-21 00:03:31,015 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) [2022-03-21 00:03:32,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:03:32,471 INFO L93 Difference]: Finished difference Result 8195 states and 11832 transitions. [2022-03-21 00:03:32,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:03:32,472 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 [2022-03-21 00:03:32,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:03:32,499 INFO L225 Difference]: With dead ends: 8195 [2022-03-21 00:03:32,500 INFO L226 Difference]: Without dead ends: 8187 [2022-03-21 00:03:32,505 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-21 00:03:32,506 INFO L913 BasicCegarLoop]: 4476 mSDtfsCounter, 1928 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 7176 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:03:32,506 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1928 Valid, 7176 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:03:32,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8187 states. [2022-03-21 00:03:33,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8187 to 6951. [2022-03-21 00:03:33,725 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) [2022-03-21 00:03:33,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6951 states to 6951 states and 10008 transitions. [2022-03-21 00:03:33,742 INFO L78 Accepts]: Start accepts. Automaton has 6951 states and 10008 transitions. Word has length 65 [2022-03-21 00:03:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:03:33,743 INFO L478 AbstractCegarLoop]: Abstraction has 6951 states and 10008 transitions. [2022-03-21 00:03:33,743 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) [2022-03-21 00:03:33,743 INFO L276 IsEmpty]: Start isEmpty. Operand 6951 states and 10008 transitions. [2022-03-21 00:03:33,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-21 00:03:33,745 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:03:33,745 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:03:33,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-21 00:03:33,959 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 [2022-03-21 00:03:33,959 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:03:33,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:03:33,960 INFO L85 PathProgramCache]: Analyzing trace with hash 118946246, now seen corresponding path program 1 times [2022-03-21 00:03:33,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:33,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [674592765] [2022-03-21 00:03:33,962 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:03:33,962 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:03:33,962 INFO L85 PathProgramCache]: Analyzing trace with hash 118946246, now seen corresponding path program 2 times [2022-03-21 00:03:33,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:03:33,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305771304] [2022-03-21 00:03:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:03:33,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:03:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:34,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:03:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:34,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:03:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:34,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:03:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:34,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:03:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:34,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:03:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:34,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:34,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:03:34,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:03:34,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305771304] [2022-03-21 00:03:34,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305771304] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:03:34,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554875106] [2022-03-21 00:03:34,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:03:34,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:03:34,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:03:34,334 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) [2022-03-21 00:03:34,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-21 00:03:35,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:03:35,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:03:35,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-21 00:03:35,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:03:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:03:35,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:03:35,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554875106] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:35,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:03:35,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-03-21 00:03:35,334 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:03:35,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [674592765] [2022-03-21 00:03:35,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [674592765] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:35,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:35,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:03:35,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115924780] [2022-03-21 00:03:35,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:03:35,335 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:03:35,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:35,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:03:35,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:03:35,335 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) [2022-03-21 00:03:36,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:03:38,609 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 [] [2022-03-21 00:03:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:03:39,906 INFO L93 Difference]: Finished difference Result 7057 states and 10147 transitions. [2022-03-21 00:03:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:03:39,906 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 [2022-03-21 00:03:39,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:03:39,932 INFO L225 Difference]: With dead ends: 7057 [2022-03-21 00:03:39,932 INFO L226 Difference]: Without dead ends: 6978 [2022-03-21 00:03:39,938 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:03:39,938 INFO L913 BasicCegarLoop]: 2757 mSDtfsCounter, 9 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 5458 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-03-21 00:03:39,939 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 5458 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 39 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-03-21 00:03:39,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6978 states. [2022-03-21 00:03:41,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6978 to 6957. [2022-03-21 00:03:41,156 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) [2022-03-21 00:03:41,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6957 states to 6957 states and 10018 transitions. [2022-03-21 00:03:41,178 INFO L78 Accepts]: Start accepts. Automaton has 6957 states and 10018 transitions. Word has length 68 [2022-03-21 00:03:41,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:03:41,178 INFO L478 AbstractCegarLoop]: Abstraction has 6957 states and 10018 transitions. [2022-03-21 00:03:41,178 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) [2022-03-21 00:03:41,178 INFO L276 IsEmpty]: Start isEmpty. Operand 6957 states and 10018 transitions. [2022-03-21 00:03:41,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-21 00:03:41,181 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:03:41,181 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:03:41,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-21 00:03:41,395 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 [2022-03-21 00:03:41,395 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:03:41,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:03:41,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1475878482, now seen corresponding path program 1 times [2022-03-21 00:03:41,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:41,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [52724357] [2022-03-21 00:03:41,398 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:03:41,398 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:03:41,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1475878482, now seen corresponding path program 2 times [2022-03-21 00:03:41,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:03:41,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051002255] [2022-03-21 00:03:41,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:03:41,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:03:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:41,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:03:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:41,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:03:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:41,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:03:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:41,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-21 00:03:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:41,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-21 00:03:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:41,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:41,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-21 00:03:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:41,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:41,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:03:41,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:03:41,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051002255] [2022-03-21 00:03:41,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051002255] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:03:41,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134316174] [2022-03-21 00:03:41,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:03:41,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:03:41,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:03:41,757 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) [2022-03-21 00:03:41,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-21 00:03:42,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:03:42,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:03:42,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-21 00:03:42,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:03:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:03:42,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:03:42,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134316174] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:42,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:03:42,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2022-03-21 00:03:42,909 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:03:42,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [52724357] [2022-03-21 00:03:42,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [52724357] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:42,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:42,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:03:42,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39406245] [2022-03-21 00:03:42,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:03:42,909 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-21 00:03:42,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:42,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-21 00:03:42,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-03-21 00:03:42,910 INFO L87 Difference]: Start difference. First operand 6957 states and 10018 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-21 00:03:44,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:03:44,240 INFO L93 Difference]: Finished difference Result 7028 states and 10098 transitions. [2022-03-21 00:03:44,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-21 00:03:44,240 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 [2022-03-21 00:03:44,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:03:44,266 INFO L225 Difference]: With dead ends: 7028 [2022-03-21 00:03:44,266 INFO L226 Difference]: Without dead ends: 6947 [2022-03-21 00:03:44,272 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-03-21 00:03:44,272 INFO L913 BasicCegarLoop]: 2769 mSDtfsCounter, 9 mSDsluCounter, 24875 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 27644 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:03:44,273 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 27644 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:03:44,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6947 states. [2022-03-21 00:03:45,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6947 to 6947. [2022-03-21 00:03:45,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6947 states, 4607 states have (on average 1.3520729324940308) internal successors, (6229), 4712 states have internal predecessors, (6229), 1857 states have call successors, (1857), 446 states have call predecessors, (1857), 482 states have return successors, (1918), 1863 states have call predecessors, (1918), 1846 states have call successors, (1918) [2022-03-21 00:03:45,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6947 states to 6947 states and 10004 transitions. [2022-03-21 00:03:45,514 INFO L78 Accepts]: Start accepts. Automaton has 6947 states and 10004 transitions. Word has length 68 [2022-03-21 00:03:45,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:03:45,514 INFO L478 AbstractCegarLoop]: Abstraction has 6947 states and 10004 transitions. [2022-03-21 00:03:45,515 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) [2022-03-21 00:03:45,515 INFO L276 IsEmpty]: Start isEmpty. Operand 6947 states and 10004 transitions. [2022-03-21 00:03:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-21 00:03:45,517 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:03:45,517 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:03:45,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-21 00:03:45,717 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 [2022-03-21 00:03:45,718 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:03:45,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:03:45,718 INFO L85 PathProgramCache]: Analyzing trace with hash -774797162, now seen corresponding path program 1 times [2022-03-21 00:03:45,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:45,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1040251832] [2022-03-21 00:03:45,720 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:03:45,720 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:03:45,720 INFO L85 PathProgramCache]: Analyzing trace with hash -774797162, now seen corresponding path program 2 times [2022-03-21 00:03:45,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:03:45,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359431819] [2022-03-21 00:03:45,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:03:45,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:03:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:45,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:03:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:45,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:03:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:46,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:03:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:46,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:03:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:46,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:03:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:46,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:46,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-21 00:03:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:46,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:46,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:46,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:03:46,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:03:46,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359431819] [2022-03-21 00:03:46,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359431819] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:03:46,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126419266] [2022-03-21 00:03:46,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:03:46,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:03:46,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:03:46,144 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) [2022-03-21 00:03:46,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-21 00:03:47,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:03:47,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:03:47,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-21 00:03:47,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:03:47,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:03:47,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:03:47,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126419266] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:47,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:03:47,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-03-21 00:03:47,283 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:03:47,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1040251832] [2022-03-21 00:03:47,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1040251832] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:47,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:47,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:03:47,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093688205] [2022-03-21 00:03:47,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:03:47,284 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-21 00:03:47,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:47,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-21 00:03:47,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-03-21 00:03:47,284 INFO L87 Difference]: Start difference. First operand 6947 states and 10004 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-21 00:03:50,233 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 [] [2022-03-21 00:03:51,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:03:51,580 INFO L93 Difference]: Finished difference Result 7078 states and 10158 transitions. [2022-03-21 00:03:51,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-21 00:03:51,581 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 [2022-03-21 00:03:51,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:03:51,596 INFO L225 Difference]: With dead ends: 7078 [2022-03-21 00:03:51,596 INFO L226 Difference]: Without dead ends: 6040 [2022-03-21 00:03:51,601 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-03-21 00:03:51,601 INFO L913 BasicCegarLoop]: 2775 mSDtfsCounter, 17 mSDsluCounter, 24873 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 27648 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:03:51,601 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 27648 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 172 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-03-21 00:03:51,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6040 states. [2022-03-21 00:03:52,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6040 to 6005. [2022-03-21 00:03:52,627 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) [2022-03-21 00:03:52,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6005 states to 6005 states and 8596 transitions. [2022-03-21 00:03:52,645 INFO L78 Accepts]: Start accepts. Automaton has 6005 states and 8596 transitions. Word has length 76 [2022-03-21 00:03:52,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:03:52,646 INFO L478 AbstractCegarLoop]: Abstraction has 6005 states and 8596 transitions. [2022-03-21 00:03:52,646 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) [2022-03-21 00:03:52,646 INFO L276 IsEmpty]: Start isEmpty. Operand 6005 states and 8596 transitions. [2022-03-21 00:03:52,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-21 00:03:52,648 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:03:52,648 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:03:52,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-21 00:03:52,848 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 [2022-03-21 00:03:52,849 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:03:52,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:03:52,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1149198091, now seen corresponding path program 1 times [2022-03-21 00:03:52,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:52,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1992261606] [2022-03-21 00:03:52,851 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:03:52,851 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:03:52,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1149198091, now seen corresponding path program 2 times [2022-03-21 00:03:52,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:03:52,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140281749] [2022-03-21 00:03:52,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:03:52,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:03:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:53,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:03:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:53,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:03:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:53,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:03:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:53,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:03:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:53,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:53,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:03:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:53,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:03:53,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:03:53,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140281749] [2022-03-21 00:03:53,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140281749] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:03:53,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128465963] [2022-03-21 00:03:53,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:03:53,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:03:53,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:03:53,191 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) [2022-03-21 00:03:53,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-21 00:03:54,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:03:54,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:03:54,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-21 00:03:54,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:03:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:03:54,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:03:54,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128465963] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:54,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:03:54,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-03-21 00:03:54,431 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:03:54,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1992261606] [2022-03-21 00:03:54,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1992261606] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:54,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:54,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-21 00:03:54,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073992577] [2022-03-21 00:03:54,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:03:54,432 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-21 00:03:54,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:54,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-21 00:03:54,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-03-21 00:03:54,432 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) [2022-03-21 00:03:59,453 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 [] [2022-03-21 00:04:04,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:04:04,919 INFO L93 Difference]: Finished difference Result 6386 states and 9116 transitions. [2022-03-21 00:04:04,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-21 00:04:04,920 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 [2022-03-21 00:04:04,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:04:04,937 INFO L225 Difference]: With dead ends: 6386 [2022-03-21 00:04:04,937 INFO L226 Difference]: Without dead ends: 6267 [2022-03-21 00:04:04,940 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:04:04,940 INFO L913 BasicCegarLoop]: 2351 mSDtfsCounter, 3388 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 5158 mSolverCounterSat, 1483 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3823 SdHoareTripleChecker+Valid, 3521 SdHoareTripleChecker+Invalid, 6642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1483 IncrementalHoareTripleChecker+Valid, 5158 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-03-21 00:04:04,940 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3823 Valid, 3521 Invalid, 6642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1483 Valid, 5158 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-03-21 00:04:04,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6267 states. [2022-03-21 00:04:06,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6267 to 6182. [2022-03-21 00:04:06,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6182 states, 4165 states have (on average 1.3541416566626652) internal successors, (5640), 4266 states have internal predecessors, (5640), 1588 states have call successors, (1588), 404 states have call predecessors, (1588), 428 states have return successors, (1622), 1574 states have call predecessors, (1622), 1577 states have call successors, (1622) [2022-03-21 00:04:06,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6182 states to 6182 states and 8850 transitions. [2022-03-21 00:04:06,197 INFO L78 Accepts]: Start accepts. Automaton has 6182 states and 8850 transitions. Word has length 66 [2022-03-21 00:04:06,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:04:06,197 INFO L478 AbstractCegarLoop]: Abstraction has 6182 states and 8850 transitions. [2022-03-21 00:04:06,197 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) [2022-03-21 00:04:06,198 INFO L276 IsEmpty]: Start isEmpty. Operand 6182 states and 8850 transitions. [2022-03-21 00:04:06,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-21 00:04:06,199 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:04:06,199 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:04:06,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-21 00:04:06,400 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 [2022-03-21 00:04:06,400 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:04:06,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:04:06,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1417992752, now seen corresponding path program 1 times [2022-03-21 00:04:06,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:06,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1798773553] [2022-03-21 00:04:06,403 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:04:06,403 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:04:06,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1417992752, now seen corresponding path program 2 times [2022-03-21 00:04:06,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:04:06,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499813527] [2022-03-21 00:04:06,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:04:06,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:04:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:06,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:04:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:06,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:04:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:06,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:04:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:06,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:04:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:06,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:04:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:06,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:04:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:04:06,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:04:06,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499813527] [2022-03-21 00:04:06,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499813527] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:04:06,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514730540] [2022-03-21 00:04:06,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:04:06,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:04:06,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:04:06,778 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) [2022-03-21 00:04:06,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-21 00:04:07,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:04:07,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:04:07,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-21 00:04:07,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:04:07,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:04:07,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:04:07,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514730540] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:07,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:04:07,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-21 00:04:07,869 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:04:07,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1798773553] [2022-03-21 00:04:07,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1798773553] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:07,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:04:07,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:04:07,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223647310] [2022-03-21 00:04:07,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:04:07,870 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:04:07,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:07,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:04:07,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:04:07,870 INFO L87 Difference]: Start difference. First operand 6182 states and 8850 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-21 00:04:09,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:04:09,106 INFO L93 Difference]: Finished difference Result 6239 states and 8921 transitions. [2022-03-21 00:04:09,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:04:09,106 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 [2022-03-21 00:04:09,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:04:09,123 INFO L225 Difference]: With dead ends: 6239 [2022-03-21 00:04:09,123 INFO L226 Difference]: Without dead ends: 6194 [2022-03-21 00:04:09,127 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:04:09,127 INFO L913 BasicCegarLoop]: 2734 mSDtfsCounter, 15 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 5424 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:04:09,128 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 5424 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-21 00:04:09,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6194 states. [2022-03-21 00:04:10,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6194 to 6182. [2022-03-21 00:04:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6182 states, 4165 states have (on average 1.3541416566626652) internal successors, (5640), 4266 states have internal predecessors, (5640), 1588 states have call successors, (1588), 404 states have call predecessors, (1588), 428 states have return successors, (1622), 1574 states have call predecessors, (1622), 1577 states have call successors, (1622) [2022-03-21 00:04:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6182 states to 6182 states and 8850 transitions. [2022-03-21 00:04:10,349 INFO L78 Accepts]: Start accepts. Automaton has 6182 states and 8850 transitions. Word has length 69 [2022-03-21 00:04:10,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:04:10,350 INFO L478 AbstractCegarLoop]: Abstraction has 6182 states and 8850 transitions. [2022-03-21 00:04:10,350 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) [2022-03-21 00:04:10,350 INFO L276 IsEmpty]: Start isEmpty. Operand 6182 states and 8850 transitions. [2022-03-21 00:04:10,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-21 00:04:10,352 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:04:10,352 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:04:10,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-21 00:04:10,552 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 [2022-03-21 00:04:10,552 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:04:10,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:04:10,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1825278757, now seen corresponding path program 1 times [2022-03-21 00:04:10,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:10,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1924378771] [2022-03-21 00:04:10,555 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:04:10,555 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:04:10,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1825278757, now seen corresponding path program 2 times [2022-03-21 00:04:10,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:04:10,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114385900] [2022-03-21 00:04:10,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:04:10,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:04:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:04:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:10,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:04:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:10,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:04:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:10,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:04:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:10,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:04:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:10,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:04:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:10,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:04:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:10,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-21 00:04:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:10,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:04:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:10,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:04:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:10,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:04:10,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:04:10,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114385900] [2022-03-21 00:04:10,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114385900] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:04:10,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784466366] [2022-03-21 00:04:10,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:04:10,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:04:10,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:04:10,950 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) [2022-03-21 00:04:10,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-21 00:04:11,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:04:11,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:04:11,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-21 00:04:11,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:04:12,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:04:12,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:04:12,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784466366] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:12,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:04:12,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-03-21 00:04:12,157 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:04:12,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1924378771] [2022-03-21 00:04:12,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1924378771] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:12,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:04:12,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:04:12,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192379415] [2022-03-21 00:04:12,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:04:12,157 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-21 00:04:12,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:12,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-21 00:04:12,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-03-21 00:04:12,158 INFO L87 Difference]: Start difference. First operand 6182 states and 8850 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-21 00:04:13,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:04:13,594 INFO L93 Difference]: Finished difference Result 6201 states and 8872 transitions. [2022-03-21 00:04:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-21 00:04:13,595 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 [2022-03-21 00:04:13,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:04:13,613 INFO L225 Difference]: With dead ends: 6201 [2022-03-21 00:04:13,613 INFO L226 Difference]: Without dead ends: 6171 [2022-03-21 00:04:13,617 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-03-21 00:04:13,618 INFO L913 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:04:13,618 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 27415 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:04:13,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6171 states. [2022-03-21 00:04:14,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6171 to 6171. [2022-03-21 00:04:14,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6171 states, 4157 states have (on average 1.354582631705557) internal successors, (5631), 4258 states have internal predecessors, (5631), 1587 states have call successors, (1587), 404 states have call predecessors, (1587), 426 states have return successors, (1619), 1571 states have call predecessors, (1619), 1576 states have call successors, (1619) [2022-03-21 00:04:14,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6171 states to 6171 states and 8837 transitions. [2022-03-21 00:04:14,847 INFO L78 Accepts]: Start accepts. Automaton has 6171 states and 8837 transitions. Word has length 76 [2022-03-21 00:04:14,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:04:14,848 INFO L478 AbstractCegarLoop]: Abstraction has 6171 states and 8837 transitions. [2022-03-21 00:04:14,848 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) [2022-03-21 00:04:14,848 INFO L276 IsEmpty]: Start isEmpty. Operand 6171 states and 8837 transitions. [2022-03-21 00:04:14,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-21 00:04:14,850 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:04:14,850 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:04:14,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-21 00:04:15,050 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 [2022-03-21 00:04:15,050 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:04:15,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:04:15,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2036422710, now seen corresponding path program 1 times [2022-03-21 00:04:15,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:15,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1484334849] [2022-03-21 00:04:15,053 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:04:15,053 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:04:15,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2036422710, now seen corresponding path program 2 times [2022-03-21 00:04:15,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:04:15,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186523838] [2022-03-21 00:04:15,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:04:15,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:04:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:15,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:04:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:15,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:04:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:15,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:04:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:15,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:04:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:15,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:04:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:15,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:04:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:04:15,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:04:15,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186523838] [2022-03-21 00:04:15,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186523838] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:04:15,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352452827] [2022-03-21 00:04:15,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:04:15,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:04:15,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:04:15,389 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) [2022-03-21 00:04:15,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-21 00:04:16,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:04:16,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:04:16,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-21 00:04:16,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:04:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:04:16,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:04:16,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352452827] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:16,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:04:16,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-03-21 00:04:16,498 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:04:16,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1484334849] [2022-03-21 00:04:16,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1484334849] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:16,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:04:16,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:04:16,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443669152] [2022-03-21 00:04:16,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:04:16,499 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:04:16,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:16,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:04:16,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-21 00:04:16,499 INFO L87 Difference]: Start difference. First operand 6171 states and 8837 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-21 00:04:18,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:04:18,215 INFO L93 Difference]: Finished difference Result 7605 states and 10892 transitions. [2022-03-21 00:04:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:04:18,215 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 [2022-03-21 00:04:18,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:04:18,232 INFO L225 Difference]: With dead ends: 7605 [2022-03-21 00:04:18,233 INFO L226 Difference]: Without dead ends: 7592 [2022-03-21 00:04:18,235 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-21 00:04:18,235 INFO L913 BasicCegarLoop]: 4541 mSDtfsCounter, 1925 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1925 SdHoareTripleChecker+Valid, 7218 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:04:18,236 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1925 Valid, 7218 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:04:18,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7592 states. [2022-03-21 00:04:19,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7592 to 6297. [2022-03-21 00:04:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6297 states, 4248 states have (on average 1.3486346516007532) internal successors, (5729), 4340 states have internal predecessors, (5729), 1597 states have call successors, (1597), 414 states have call predecessors, (1597), 451 states have return successors, (1655), 1607 states have call predecessors, (1655), 1586 states have call successors, (1655) [2022-03-21 00:04:19,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6297 states to 6297 states and 8981 transitions. [2022-03-21 00:04:19,513 INFO L78 Accepts]: Start accepts. Automaton has 6297 states and 8981 transitions. Word has length 67 [2022-03-21 00:04:19,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:04:19,513 INFO L478 AbstractCegarLoop]: Abstraction has 6297 states and 8981 transitions. [2022-03-21 00:04:19,513 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) [2022-03-21 00:04:19,513 INFO L276 IsEmpty]: Start isEmpty. Operand 6297 states and 8981 transitions. [2022-03-21 00:04:19,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-21 00:04:19,515 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:04:19,515 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:04:19,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-21 00:04:19,716 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 [2022-03-21 00:04:19,716 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:04:19,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:04:19,716 INFO L85 PathProgramCache]: Analyzing trace with hash -822110410, now seen corresponding path program 1 times [2022-03-21 00:04:19,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:19,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1289442279] [2022-03-21 00:04:19,718 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:04:19,718 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:04:19,719 INFO L85 PathProgramCache]: Analyzing trace with hash -822110410, now seen corresponding path program 2 times [2022-03-21 00:04:19,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:04:19,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166907872] [2022-03-21 00:04:19,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:04:19,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:04:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:19,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:04:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:19,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:04:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:19,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:04:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:20,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:04:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:20,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:04:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:20,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:04:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:20,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:04:20,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:04:20,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166907872] [2022-03-21 00:04:20,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166907872] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:04:20,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449832861] [2022-03-21 00:04:20,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:04:20,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:04:20,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:04:20,052 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) [2022-03-21 00:04:20,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-21 00:04:21,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:04:21,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:04:21,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-21 00:04:21,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:04:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:04:21,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:04:21,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449832861] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:21,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:04:21,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2022-03-21 00:04:21,122 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:04:21,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1289442279] [2022-03-21 00:04:21,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1289442279] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:21,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:04:21,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:04:21,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354680660] [2022-03-21 00:04:21,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:04:21,123 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:04:21,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:21,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:04:21,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-21 00:04:21,124 INFO L87 Difference]: Start difference. First operand 6297 states and 8981 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-21 00:04:22,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:04:22,392 INFO L93 Difference]: Finished difference Result 9053 states and 12967 transitions. [2022-03-21 00:04:22,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:04:22,393 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 [2022-03-21 00:04:22,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:04:22,410 INFO L225 Difference]: With dead ends: 9053 [2022-03-21 00:04:22,410 INFO L226 Difference]: Without dead ends: 6323 [2022-03-21 00:04:22,419 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-21 00:04:22,420 INFO L913 BasicCegarLoop]: 2723 mSDtfsCounter, 7 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5441 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:04:22,420 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5441 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-21 00:04:22,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6323 states. [2022-03-21 00:04:23,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6323 to 6303. [2022-03-21 00:04:23,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6303 states, 4254 states have (on average 1.3488481429243064) internal successors, (5738), 4346 states have internal predecessors, (5738), 1597 states have call successors, (1597), 414 states have call predecessors, (1597), 451 states have return successors, (1655), 1607 states have call predecessors, (1655), 1586 states have call successors, (1655) [2022-03-21 00:04:23,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6303 states to 6303 states and 8990 transitions. [2022-03-21 00:04:23,738 INFO L78 Accepts]: Start accepts. Automaton has 6303 states and 8990 transitions. Word has length 67 [2022-03-21 00:04:23,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:04:23,739 INFO L478 AbstractCegarLoop]: Abstraction has 6303 states and 8990 transitions. [2022-03-21 00:04:23,739 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) [2022-03-21 00:04:23,739 INFO L276 IsEmpty]: Start isEmpty. Operand 6303 states and 8990 transitions. [2022-03-21 00:04:23,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-21 00:04:23,741 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:04:23,741 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:04:23,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-21 00:04:23,942 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 [2022-03-21 00:04:23,942 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:04:23,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:04:23,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1783913144, now seen corresponding path program 1 times [2022-03-21 00:04:23,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:23,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [625595632] [2022-03-21 00:04:23,945 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:04:23,945 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:04:23,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1783913144, now seen corresponding path program 2 times [2022-03-21 00:04:23,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:04:23,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728716963] [2022-03-21 00:04:23,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:04:23,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:04:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:24,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:04:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:24,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:04:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:24,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:04:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:24,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:04:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:24,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:04:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:24,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:04:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:24,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:04:24,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:04:24,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728716963] [2022-03-21 00:04:24,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728716963] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:04:24,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574636908] [2022-03-21 00:04:24,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:04:24,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:04:24,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:04:24,271 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) [2022-03-21 00:04:24,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-21 00:04:25,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:04:25,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:04:25,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-21 00:04:25,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:04:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:04:25,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:04:25,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574636908] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:25,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:04:25,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-03-21 00:04:25,573 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:04:25,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [625595632] [2022-03-21 00:04:25,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [625595632] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:25,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:04:25,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-21 00:04:25,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614351996] [2022-03-21 00:04:25,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:04:25,573 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-21 00:04:25,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:25,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-21 00:04:25,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-03-21 00:04:25,574 INFO L87 Difference]: Start difference. First operand 6303 states and 8990 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-03-21 00:04:31,357 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 [] [2022-03-21 00:04:33,373 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 [] [2022-03-21 00:04:38,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:04:38,268 INFO L93 Difference]: Finished difference Result 6374 states and 9073 transitions. [2022-03-21 00:04:38,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-21 00:04:38,269 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 [2022-03-21 00:04:38,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:04:38,283 INFO L225 Difference]: With dead ends: 6374 [2022-03-21 00:04:38,284 INFO L226 Difference]: Without dead ends: 6144 [2022-03-21 00:04:38,287 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:04:38,287 INFO L913 BasicCegarLoop]: 2263 mSDtfsCounter, 1822 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 5098 mSolverCounterSat, 501 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2249 SdHoareTripleChecker+Valid, 3398 SdHoareTripleChecker+Invalid, 5601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 5098 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:04:38,288 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2249 Valid, 3398 Invalid, 5601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 5098 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2022-03-21 00:04:38,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6144 states. [2022-03-21 00:04:39,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6144 to 6142. [2022-03-21 00:04:39,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6142 states, 4136 states have (on average 1.3571083172147003) internal successors, (5613), 4250 states have internal predecessors, (5613), 1588 states have call successors, (1588), 406 states have call predecessors, (1588), 417 states have return successors, (1598), 1550 states have call predecessors, (1598), 1577 states have call successors, (1598) [2022-03-21 00:04:39,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 8799 transitions. [2022-03-21 00:04:39,624 INFO L78 Accepts]: Start accepts. Automaton has 6142 states and 8799 transitions. Word has length 67 [2022-03-21 00:04:39,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:04:39,624 INFO L478 AbstractCegarLoop]: Abstraction has 6142 states and 8799 transitions. [2022-03-21 00:04:39,625 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) [2022-03-21 00:04:39,625 INFO L276 IsEmpty]: Start isEmpty. Operand 6142 states and 8799 transitions. [2022-03-21 00:04:39,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-21 00:04:39,626 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:04:39,626 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:04:39,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-21 00:04:39,831 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 [2022-03-21 00:04:39,832 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:04:39,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:04:39,832 INFO L85 PathProgramCache]: Analyzing trace with hash -844197040, now seen corresponding path program 1 times [2022-03-21 00:04:39,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:39,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [614741118] [2022-03-21 00:04:39,834 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:04:39,834 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:04:39,834 INFO L85 PathProgramCache]: Analyzing trace with hash -844197040, now seen corresponding path program 2 times [2022-03-21 00:04:39,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:04:39,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352460531] [2022-03-21 00:04:39,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:04:39,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:04:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:40,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:04:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:40,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:04:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:40,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:04:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:40,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:04:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:40,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:04:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:40,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:04:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:04:40,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:04:40,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352460531] [2022-03-21 00:04:40,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352460531] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:04:40,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726904397] [2022-03-21 00:04:40,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:04:40,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:04:40,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:04:40,151 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) [2022-03-21 00:04:40,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-21 00:04:41,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:04:41,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:04:41,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-21 00:04:41,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:04:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:04:41,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:04:41,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726904397] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:41,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:04:41,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2022-03-21 00:04:41,363 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:04:41,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [614741118] [2022-03-21 00:04:41,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [614741118] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:41,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:04:41,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:04:41,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144616901] [2022-03-21 00:04:41,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:04:41,363 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-21 00:04:41,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:41,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-21 00:04:41,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:04:41,364 INFO L87 Difference]: Start difference. First operand 6142 states and 8799 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-21 00:04:42,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:04:42,858 INFO L93 Difference]: Finished difference Result 6181 states and 8844 transitions. [2022-03-21 00:04:42,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-21 00:04:42,859 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 [2022-03-21 00:04:42,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:04:42,877 INFO L225 Difference]: With dead ends: 6181 [2022-03-21 00:04:42,877 INFO L226 Difference]: Without dead ends: 6177 [2022-03-21 00:04:42,882 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-03-21 00:04:42,882 INFO L913 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 [2022-03-21 00:04:42,882 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 21734 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:04:42,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6177 states. [2022-03-21 00:04:44,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6177 to 6162. [2022-03-21 00:04:44,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6162 states, 4153 states have (on average 1.35588731037804) internal successors, (5631), 4268 states have internal predecessors, (5631), 1589 states have call successors, (1589), 406 states have call predecessors, (1589), 419 states have return successors, (1604), 1553 states have call predecessors, (1604), 1578 states have call successors, (1604) [2022-03-21 00:04:44,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6162 states to 6162 states and 8824 transitions. [2022-03-21 00:04:44,274 INFO L78 Accepts]: Start accepts. Automaton has 6162 states and 8824 transitions. Word has length 68 [2022-03-21 00:04:44,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:04:44,274 INFO L478 AbstractCegarLoop]: Abstraction has 6162 states and 8824 transitions. [2022-03-21 00:04:44,274 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) [2022-03-21 00:04:44,274 INFO L276 IsEmpty]: Start isEmpty. Operand 6162 states and 8824 transitions. [2022-03-21 00:04:44,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-21 00:04:44,276 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:04:44,276 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:04:44,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-21 00:04:44,491 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 [2022-03-21 00:04:44,491 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:04:44,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:04:44,492 INFO L85 PathProgramCache]: Analyzing trace with hash -843920210, now seen corresponding path program 1 times [2022-03-21 00:04:44,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:44,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1966929612] [2022-03-21 00:04:44,494 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:04:44,494 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:04:44,494 INFO L85 PathProgramCache]: Analyzing trace with hash -843920210, now seen corresponding path program 2 times [2022-03-21 00:04:44,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:04:44,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092201326] [2022-03-21 00:04:44,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:04:44,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:04:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:44,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:04:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:44,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:04:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:44,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:04:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:44,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:04:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:44,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:04:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:44,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:04:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:04:44,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:04:44,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092201326] [2022-03-21 00:04:44,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092201326] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:04:44,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673766475] [2022-03-21 00:04:44,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:04:44,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:04:44,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:04:44,803 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) [2022-03-21 00:04:44,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-21 00:04:45,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:04:45,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:04:45,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-21 00:04:45,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:04:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:04:46,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:04:46,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673766475] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:46,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:04:46,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2022-03-21 00:04:46,183 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:04:46,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1966929612] [2022-03-21 00:04:46,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1966929612] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:46,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:04:46,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:04:46,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431407904] [2022-03-21 00:04:46,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:04:46,245 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-21 00:04:46,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:46,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-21 00:04:46,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-03-21 00:04:46,245 INFO L87 Difference]: Start difference. First operand 6162 states and 8824 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) [2022-03-21 00:04:51,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:04:51,776 INFO L93 Difference]: Finished difference Result 6354 states and 9048 transitions. [2022-03-21 00:04:51,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-21 00:04:51,777 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 [2022-03-21 00:04:51,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:04:51,793 INFO L225 Difference]: With dead ends: 6354 [2022-03-21 00:04:51,794 INFO L226 Difference]: Without dead ends: 6336 [2022-03-21 00:04:51,797 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-21 00:04:51,798 INFO L913 BasicCegarLoop]: 3084 mSDtfsCounter, 2656 mSDsluCounter, 18605 mSDsCounter, 0 mSdLazyCounter, 5895 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 21689 SdHoareTripleChecker+Invalid, 5906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-03-21 00:04:51,798 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2661 Valid, 21689 Invalid, 5906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 5895 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-03-21 00:04:51,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6336 states. [2022-03-21 00:04:53,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6336 to 6191. [2022-03-21 00:04:53,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6191 states, 4175 states have (on average 1.3552095808383233) internal successors, (5658), 4293 states have internal predecessors, (5658), 1592 states have call successors, (1592), 409 states have call predecessors, (1592), 423 states have return successors, (1610), 1555 states have call predecessors, (1610), 1581 states have call successors, (1610) [2022-03-21 00:04:53,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6191 states to 6191 states and 8860 transitions. [2022-03-21 00:04:53,155 INFO L78 Accepts]: Start accepts. Automaton has 6191 states and 8860 transitions. Word has length 68 [2022-03-21 00:04:53,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:04:53,155 INFO L478 AbstractCegarLoop]: Abstraction has 6191 states and 8860 transitions. [2022-03-21 00:04:53,155 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) [2022-03-21 00:04:53,155 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states and 8860 transitions. [2022-03-21 00:04:53,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-21 00:04:53,157 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:04:53,157 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:04:53,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-21 00:04:53,357 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 [2022-03-21 00:04:53,358 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:04:53,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:04:53,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1268963390, now seen corresponding path program 1 times [2022-03-21 00:04:53,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:53,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1657354654] [2022-03-21 00:04:53,360 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:04:53,360 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:04:53,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1268963390, now seen corresponding path program 2 times [2022-03-21 00:04:53,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:04:53,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535034029] [2022-03-21 00:04:53,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:04:53,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:04:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:53,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:04:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:53,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:04:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:53,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:04:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:53,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-21 00:04:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:53,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:04:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:53,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-21 00:04:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:53,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-21 00:04:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:53,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:04:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:53,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:04:53,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:04:53,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535034029] [2022-03-21 00:04:53,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535034029] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:04:53,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353822056] [2022-03-21 00:04:53,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:04:53,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:04:53,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:04:53,687 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) [2022-03-21 00:04:53,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-21 00:04:54,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:04:54,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:04:54,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-21 00:04:54,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:04:54,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:04:54,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:04:54,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353822056] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:54,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:04:54,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-03-21 00:04:54,915 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:04:54,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1657354654] [2022-03-21 00:04:54,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1657354654] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:54,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:04:54,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:04:54,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127411407] [2022-03-21 00:04:54,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:04:54,916 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:04:54,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:54,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:04:54,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:04:54,917 INFO L87 Difference]: Start difference. First operand 6191 states and 8860 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) [2022-03-21 00:04:56,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:04:56,229 INFO L93 Difference]: Finished difference Result 6240 states and 8918 transitions. [2022-03-21 00:04:56,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:04:56,230 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 [2022-03-21 00:04:56,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:04:56,246 INFO L225 Difference]: With dead ends: 6240 [2022-03-21 00:04:56,246 INFO L226 Difference]: Without dead ends: 6236 [2022-03-21 00:04:56,248 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:04:56,249 INFO L913 BasicCegarLoop]: 2726 mSDtfsCounter, 2654 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2654 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:04:56,249 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2654 Valid, 2800 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-21 00:04:56,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6236 states. [2022-03-21 00:04:57,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6236 to 6189. [2022-03-21 00:04:57,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6189 states, 4175 states have (on average 1.3547305389221558) internal successors, (5656), 4291 states have internal predecessors, (5656), 1590 states have call successors, (1590), 409 states have call predecessors, (1590), 423 states have return successors, (1610), 1555 states have call predecessors, (1610), 1581 states have call successors, (1610) [2022-03-21 00:04:57,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6189 states to 6189 states and 8856 transitions. [2022-03-21 00:04:57,609 INFO L78 Accepts]: Start accepts. Automaton has 6189 states and 8856 transitions. Word has length 74 [2022-03-21 00:04:57,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:04:57,609 INFO L478 AbstractCegarLoop]: Abstraction has 6189 states and 8856 transitions. [2022-03-21 00:04:57,609 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) [2022-03-21 00:04:57,609 INFO L276 IsEmpty]: Start isEmpty. Operand 6189 states and 8856 transitions. [2022-03-21 00:04:57,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-21 00:04:57,611 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:04:57,611 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:04:57,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-21 00:04:57,811 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 [2022-03-21 00:04:57,811 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:04:57,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:04:57,812 INFO L85 PathProgramCache]: Analyzing trace with hash 961252362, now seen corresponding path program 1 times [2022-03-21 00:04:57,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:57,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2113714457] [2022-03-21 00:04:57,814 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:04:57,814 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:04:57,814 INFO L85 PathProgramCache]: Analyzing trace with hash 961252362, now seen corresponding path program 2 times [2022-03-21 00:04:57,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:04:57,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749514848] [2022-03-21 00:04:57,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:04:57,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:04:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:58,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:04:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:58,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:04:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:58,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:04:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:58,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:04:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:58,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:04:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:58,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:04:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:04:58,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:04:58,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749514848] [2022-03-21 00:04:58,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749514848] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:04:58,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473748570] [2022-03-21 00:04:58,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:04:58,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:04:58,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:04:58,124 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) [2022-03-21 00:04:58,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-21 00:04:59,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:04:59,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:04:59,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 1614 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-21 00:04:59,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:04:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:04:59,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:04:59,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473748570] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:59,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:04:59,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2022-03-21 00:04:59,465 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:04:59,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2113714457] [2022-03-21 00:04:59,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2113714457] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:59,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:04:59,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-21 00:04:59,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449283837] [2022-03-21 00:04:59,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:04:59,465 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-21 00:04:59,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:59,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-21 00:04:59,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-03-21 00:04:59,466 INFO L87 Difference]: Start difference. First operand 6189 states and 8856 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) [2022-03-21 00:05:01,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:05:01,161 INFO L93 Difference]: Finished difference Result 6209 states and 8878 transitions. [2022-03-21 00:05:01,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-21 00:05:01,161 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 [2022-03-21 00:05:01,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:05:01,179 INFO L225 Difference]: With dead ends: 6209 [2022-03-21 00:05:01,179 INFO L226 Difference]: Without dead ends: 6191 [2022-03-21 00:05:01,183 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-03-21 00:05:01,183 INFO L913 BasicCegarLoop]: 2730 mSDtfsCounter, 12 mSDsluCounter, 18963 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-03-21 00:05:01,183 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 21693 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-21 00:05:01,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6191 states. [2022-03-21 00:05:02,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6191 to 6146. [2022-03-21 00:05:02,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6146 states, 4141 states have (on average 1.356194156000966) internal successors, (5616), 4254 states have internal predecessors, (5616), 1586 states have call successors, (1586), 406 states have call predecessors, (1586), 418 states have return successors, (1601), 1550 states have call predecessors, (1601), 1577 states have call successors, (1601) [2022-03-21 00:05:02,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6146 states to 6146 states and 8803 transitions. [2022-03-21 00:05:02,539 INFO L78 Accepts]: Start accepts. Automaton has 6146 states and 8803 transitions. Word has length 69 [2022-03-21 00:05:02,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:05:02,539 INFO L478 AbstractCegarLoop]: Abstraction has 6146 states and 8803 transitions. [2022-03-21 00:05:02,539 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) [2022-03-21 00:05:02,539 INFO L276 IsEmpty]: Start isEmpty. Operand 6146 states and 8803 transitions. [2022-03-21 00:05:02,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-21 00:05:02,541 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:05:02,541 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:05:02,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-21 00:05:02,741 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 [2022-03-21 00:05:02,741 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:05:02,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:05:02,741 INFO L85 PathProgramCache]: Analyzing trace with hash -978476308, now seen corresponding path program 1 times [2022-03-21 00:05:02,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:05:02,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1220147792] [2022-03-21 00:05:02,743 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:05:02,743 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:05:02,743 INFO L85 PathProgramCache]: Analyzing trace with hash -978476308, now seen corresponding path program 2 times [2022-03-21 00:05:02,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:05:02,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609906346] [2022-03-21 00:05:02,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:05:02,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:05:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:02,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:05:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:03,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:05:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:03,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:05:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:03,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:05:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:03,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:05:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:03,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:05:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:05:03,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:05:03,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609906346] [2022-03-21 00:05:03,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609906346] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:05:03,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:05:03,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:05:03,132 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:05:03,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1220147792] [2022-03-21 00:05:03,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1220147792] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:05:03,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:05:03,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:05:03,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142851721] [2022-03-21 00:05:03,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:05:03,133 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-21 00:05:03,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:05:03,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-21 00:05:03,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-21 00:05:03,133 INFO L87 Difference]: Start difference. First operand 6146 states and 8803 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) [2022-03-21 00:05:10,148 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 [] [2022-03-21 00:05:12,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:05:14,345 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:05:16,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:05:25,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:05:27,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:05:34,578 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:05:51,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:05:51,082 INFO L93 Difference]: Finished difference Result 8303 states and 12011 transitions. [2022-03-21 00:05:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-21 00:05:51,083 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 [2022-03-21 00:05:51,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:05:51,105 INFO L225 Difference]: With dead ends: 8303 [2022-03-21 00:05:51,105 INFO L226 Difference]: Without dead ends: 8297 [2022-03-21 00:05:51,109 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2022-03-21 00:05:51,110 INFO L913 BasicCegarLoop]: 3398 mSDtfsCounter, 10421 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 8921 mSolverCounterSat, 8651 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10451 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 17579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8651 IncrementalHoareTripleChecker+Valid, 8921 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.5s IncrementalHoareTripleChecker+Time [2022-03-21 00:05:51,110 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10451 Valid, 3938 Invalid, 17579 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8651 Valid, 8921 Invalid, 7 Unknown, 0 Unchecked, 43.5s Time] [2022-03-21 00:05:51,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8297 states. [2022-03-21 00:05:52,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8297 to 6149. [2022-03-21 00:05:52,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6149 states, 4144 states have (on average 1.3556949806949807) internal successors, (5618), 4257 states have internal predecessors, (5618), 1586 states have call successors, (1586), 406 states have call predecessors, (1586), 418 states have return successors, (1601), 1550 states have call predecessors, (1601), 1577 states have call successors, (1601) [2022-03-21 00:05:52,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6149 states to 6149 states and 8805 transitions. [2022-03-21 00:05:52,898 INFO L78 Accepts]: Start accepts. Automaton has 6149 states and 8805 transitions. Word has length 69 [2022-03-21 00:05:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:05:52,898 INFO L478 AbstractCegarLoop]: Abstraction has 6149 states and 8805 transitions. [2022-03-21 00:05:52,898 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) [2022-03-21 00:05:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 6149 states and 8805 transitions. [2022-03-21 00:05:52,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-21 00:05:52,900 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:05:52,900 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:05:52,900 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-21 00:05:52,900 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:05:52,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:05:52,900 INFO L85 PathProgramCache]: Analyzing trace with hash -978199478, now seen corresponding path program 1 times [2022-03-21 00:05:52,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:05:52,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1784832280] [2022-03-21 00:05:52,902 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:05:52,902 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:05:52,902 INFO L85 PathProgramCache]: Analyzing trace with hash -978199478, now seen corresponding path program 2 times [2022-03-21 00:05:52,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:05:52,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155045033] [2022-03-21 00:05:52,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:05:52,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:05:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:53,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:05:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:53,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:05:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:53,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:05:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:53,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:05:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:53,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:05:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:53,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:05:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:05:53,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:05:53,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155045033] [2022-03-21 00:05:53,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155045033] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:05:53,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086834862] [2022-03-21 00:05:53,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:05:53,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:05:53,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:05:53,235 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) [2022-03-21 00:05:53,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-21 00:05:54,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:05:54,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:05:54,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-21 00:05:54,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:05:54,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:05:54,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:05:54,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086834862] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:05:54,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:05:54,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2022-03-21 00:05:54,585 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:05:54,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1784832280] [2022-03-21 00:05:54,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1784832280] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:05:54,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:05:54,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-21 00:05:54,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932237745] [2022-03-21 00:05:54,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:05:54,585 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-21 00:05:54,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:05:54,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-21 00:05:54,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-03-21 00:05:54,586 INFO L87 Difference]: Start difference. First operand 6149 states and 8805 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) [2022-03-21 00:05:56,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:05:56,700 INFO L93 Difference]: Finished difference Result 7521 states and 10782 transitions. [2022-03-21 00:05:56,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-21 00:05:56,701 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 [2022-03-21 00:05:56,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:05:56,717 INFO L225 Difference]: With dead ends: 7521 [2022-03-21 00:05:56,717 INFO L226 Difference]: Without dead ends: 6155 [2022-03-21 00:05:56,723 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-03-21 00:05:56,723 INFO L913 BasicCegarLoop]: 2729 mSDtfsCounter, 8 mSDsluCounter, 21661 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-03-21 00:05:56,723 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 24390 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-21 00:05:56,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6155 states. [2022-03-21 00:05:58,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6155 to 6139. [2022-03-21 00:05:58,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6139 states, 4136 states have (on average 1.3556576402321083) internal successors, (5607), 4248 states have internal predecessors, (5607), 1585 states have call successors, (1585), 406 states have call predecessors, (1585), 417 states have return successors, (1597), 1549 states have call predecessors, (1597), 1576 states have call successors, (1597) [2022-03-21 00:05:58,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6139 states to 6139 states and 8789 transitions. [2022-03-21 00:05:58,441 INFO L78 Accepts]: Start accepts. Automaton has 6139 states and 8789 transitions. Word has length 69 [2022-03-21 00:05:58,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:05:58,442 INFO L478 AbstractCegarLoop]: Abstraction has 6139 states and 8789 transitions. [2022-03-21 00:05:58,442 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) [2022-03-21 00:05:58,442 INFO L276 IsEmpty]: Start isEmpty. Operand 6139 states and 8789 transitions. [2022-03-21 00:05:58,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-21 00:05:58,444 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:05:58,444 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:05:58,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-21 00:05:58,644 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 [2022-03-21 00:05:58,645 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:05:58,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:05:58,645 INFO L85 PathProgramCache]: Analyzing trace with hash 635026972, now seen corresponding path program 1 times [2022-03-21 00:05:58,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:05:58,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [477569172] [2022-03-21 00:05:58,647 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:05:58,647 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:05:58,647 INFO L85 PathProgramCache]: Analyzing trace with hash 635026972, now seen corresponding path program 2 times [2022-03-21 00:05:58,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:05:58,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286707684] [2022-03-21 00:05:58,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:05:58,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:05:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:58,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:05:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:58,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:05:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:58,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:05:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:58,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:05:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:58,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:05:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:58,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-21 00:05:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:58,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:05:58,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:05:58,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286707684] [2022-03-21 00:05:58,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286707684] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:05:58,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74781129] [2022-03-21 00:05:58,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:05:58,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:05:58,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:05:58,987 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) [2022-03-21 00:05:58,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-21 00:06:00,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:06:00,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:06:00,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-21 00:06:00,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:06:00,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:06:00,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:06:00,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74781129] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:00,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:06:00,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2022-03-21 00:06:00,373 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:06:00,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [477569172] [2022-03-21 00:06:00,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [477569172] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:00,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:06:00,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:06:00,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285052831] [2022-03-21 00:06:00,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:06:00,374 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-21 00:06:00,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:00,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-21 00:06:00,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-03-21 00:06:00,374 INFO L87 Difference]: Start difference. First operand 6139 states and 8789 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) [2022-03-21 00:06:05,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:06:05,992 INFO L93 Difference]: Finished difference Result 6333 states and 9013 transitions. [2022-03-21 00:06:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-21 00:06:05,992 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 [2022-03-21 00:06:05,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:06:06,007 INFO L225 Difference]: With dead ends: 6333 [2022-03-21 00:06:06,007 INFO L226 Difference]: Without dead ends: 6315 [2022-03-21 00:06:06,009 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-21 00:06:06,010 INFO L913 BasicCegarLoop]: 3069 mSDtfsCounter, 2647 mSDsluCounter, 18090 mSDsCounter, 0 mSdLazyCounter, 5859 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2651 SdHoareTripleChecker+Valid, 21159 SdHoareTripleChecker+Invalid, 5870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-03-21 00:06:06,010 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2651 Valid, 21159 Invalid, 5870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 5859 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-03-21 00:06:06,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6315 states. [2022-03-21 00:06:07,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6315 to 6145. [2022-03-21 00:06:07,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6145 states, 4141 states have (on average 1.355228205747404) internal successors, (5612), 4254 states have internal predecessors, (5612), 1585 states have call successors, (1585), 406 states have call predecessors, (1585), 418 states have return successors, (1599), 1549 states have call predecessors, (1599), 1576 states have call successors, (1599) [2022-03-21 00:06:07,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6145 states to 6145 states and 8796 transitions. [2022-03-21 00:06:07,832 INFO L78 Accepts]: Start accepts. Automaton has 6145 states and 8796 transitions. Word has length 69 [2022-03-21 00:06:07,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:06:07,832 INFO L478 AbstractCegarLoop]: Abstraction has 6145 states and 8796 transitions. [2022-03-21 00:06:07,832 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) [2022-03-21 00:06:07,832 INFO L276 IsEmpty]: Start isEmpty. Operand 6145 states and 8796 transitions. [2022-03-21 00:06:07,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-21 00:06:07,834 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:06:07,834 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:06:07,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-21 00:06:08,034 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 [2022-03-21 00:06:08,035 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:06:08,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:06:08,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1348122222, now seen corresponding path program 1 times [2022-03-21 00:06:08,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:08,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [908937035] [2022-03-21 00:06:08,037 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:06:08,037 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:06:08,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1348122222, now seen corresponding path program 2 times [2022-03-21 00:06:08,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:06:08,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630634218] [2022-03-21 00:06:08,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:06:08,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:06:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:08,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:06:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:08,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:06:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:08,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:06:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:08,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:06:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:08,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:08,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-21 00:06:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:08,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:06:08,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:06:08,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630634218] [2022-03-21 00:06:08,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630634218] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:06:08,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786907543] [2022-03-21 00:06:08,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:06:08,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:06:08,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:06:08,403 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) [2022-03-21 00:06:08,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-21 00:06:09,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:06:09,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:06:09,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-21 00:06:09,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:06:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:06:09,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:06:09,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786907543] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:09,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:06:09,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2022-03-21 00:06:09,847 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:06:09,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [908937035] [2022-03-21 00:06:09,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [908937035] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:09,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:06:09,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-21 00:06:09,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024590533] [2022-03-21 00:06:09,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:06:09,848 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-21 00:06:09,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:09,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-21 00:06:09,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-03-21 00:06:09,848 INFO L87 Difference]: Start difference. First operand 6145 states and 8796 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) [2022-03-21 00:06:11,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:06:11,817 INFO L93 Difference]: Finished difference Result 6185 states and 8842 transitions. [2022-03-21 00:06:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-21 00:06:11,817 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 [2022-03-21 00:06:11,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:06:11,834 INFO L225 Difference]: With dead ends: 6185 [2022-03-21 00:06:11,834 INFO L226 Difference]: Without dead ends: 6167 [2022-03-21 00:06:11,838 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-03-21 00:06:11,838 INFO L913 BasicCegarLoop]: 2722 mSDtfsCounter, 8 mSDsluCounter, 21606 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 24328 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-21 00:06:11,838 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 24328 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-21 00:06:11,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6167 states. [2022-03-21 00:06:13,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6167 to 6145. [2022-03-21 00:06:13,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6145 states, 4141 states have (on average 1.355228205747404) internal successors, (5612), 4254 states have internal predecessors, (5612), 1585 states have call successors, (1585), 406 states have call predecessors, (1585), 418 states have return successors, (1599), 1549 states have call predecessors, (1599), 1576 states have call successors, (1599) [2022-03-21 00:06:13,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6145 states to 6145 states and 8796 transitions. [2022-03-21 00:06:13,502 INFO L78 Accepts]: Start accepts. Automaton has 6145 states and 8796 transitions. Word has length 70 [2022-03-21 00:06:13,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:06:13,502 INFO L478 AbstractCegarLoop]: Abstraction has 6145 states and 8796 transitions. [2022-03-21 00:06:13,503 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) [2022-03-21 00:06:13,503 INFO L276 IsEmpty]: Start isEmpty. Operand 6145 states and 8796 transitions. [2022-03-21 00:06:13,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-21 00:06:13,505 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:06:13,505 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:06:13,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-21 00:06:13,705 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 [2022-03-21 00:06:13,705 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:06:13,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:06:13,706 INFO L85 PathProgramCache]: Analyzing trace with hash -591329618, now seen corresponding path program 1 times [2022-03-21 00:06:13,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:13,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1000345173] [2022-03-21 00:06:13,708 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:06:13,708 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:06:13,708 INFO L85 PathProgramCache]: Analyzing trace with hash -591329618, now seen corresponding path program 2 times [2022-03-21 00:06:13,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:06:13,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611287951] [2022-03-21 00:06:13,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:06:13,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:06:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:13,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:06:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:13,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:06:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:13,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:06:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:14,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:06:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:14,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:14,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-21 00:06:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:06:14,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:06:14,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611287951] [2022-03-21 00:06:14,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611287951] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:06:14,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402670018] [2022-03-21 00:06:14,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:06:14,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:06:14,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:06:14,029 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) [2022-03-21 00:06:14,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-21 00:06:15,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:06:15,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:06:15,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-21 00:06:15,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:06:15,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:06:15,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:06:15,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402670018] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:15,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:06:15,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2022-03-21 00:06:15,469 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:06:15,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1000345173] [2022-03-21 00:06:15,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1000345173] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:15,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:06:15,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-21 00:06:15,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292301636] [2022-03-21 00:06:15,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:06:15,469 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-21 00:06:15,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:15,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-21 00:06:15,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-03-21 00:06:15,470 INFO L87 Difference]: Start difference. First operand 6145 states and 8796 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) [2022-03-21 00:06:17,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:06:17,406 INFO L93 Difference]: Finished difference Result 6168 states and 8821 transitions. [2022-03-21 00:06:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-21 00:06:17,406 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 [2022-03-21 00:06:17,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:06:17,420 INFO L225 Difference]: With dead ends: 6168 [2022-03-21 00:06:17,420 INFO L226 Difference]: Without dead ends: 6133 [2022-03-21 00:06:17,423 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-03-21 00:06:17,423 INFO L913 BasicCegarLoop]: 2721 mSDtfsCounter, 12 mSDsluCounter, 18910 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 21631 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-21 00:06:17,424 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 21631 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-21 00:06:17,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6133 states. [2022-03-21 00:06:19,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6133 to 6117. [2022-03-21 00:06:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6117 states, 4119 states have (on average 1.3566399611556204) internal successors, (5588), 4231 states have internal predecessors, (5588), 1582 states have call successors, (1582), 404 states have call predecessors, (1582), 415 states have return successors, (1594), 1546 states have call predecessors, (1594), 1573 states have call successors, (1594) [2022-03-21 00:06:19,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6117 states to 6117 states and 8764 transitions. [2022-03-21 00:06:19,079 INFO L78 Accepts]: Start accepts. Automaton has 6117 states and 8764 transitions. Word has length 70 [2022-03-21 00:06:19,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:06:19,079 INFO L478 AbstractCegarLoop]: Abstraction has 6117 states and 8764 transitions. [2022-03-21 00:06:19,079 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) [2022-03-21 00:06:19,080 INFO L276 IsEmpty]: Start isEmpty. Operand 6117 states and 8764 transitions. [2022-03-21 00:06:19,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-21 00:06:19,081 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:06:19,081 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:06:19,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-21 00:06:19,291 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 [2022-03-21 00:06:19,291 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:06:19,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:06:19,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1578229099, now seen corresponding path program 1 times [2022-03-21 00:06:19,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:19,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1833124161] [2022-03-21 00:06:19,294 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:06:19,294 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:06:19,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1578229099, now seen corresponding path program 2 times [2022-03-21 00:06:19,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:06:19,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580718266] [2022-03-21 00:06:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:06:19,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:06:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:19,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:06:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:19,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:06:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:19,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:06:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:19,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:06:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:19,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:19,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-21 00:06:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:19,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-21 00:06:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:19,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-21 00:06:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:06:19,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:06:19,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580718266] [2022-03-21 00:06:19,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580718266] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:06:19,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509082407] [2022-03-21 00:06:19,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:06:19,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:06:19,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:06:19,607 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) [2022-03-21 00:06:19,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-21 00:06:20,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:06:20,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:06:20,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-21 00:06:20,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:06:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:06:20,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:06:20,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509082407] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:20,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:06:20,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-03-21 00:06:20,906 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:06:20,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1833124161] [2022-03-21 00:06:20,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1833124161] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:20,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:06:20,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:06:20,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336512565] [2022-03-21 00:06:20,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:06:20,907 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:06:20,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:20,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:06:20,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:06:20,907 INFO L87 Difference]: Start difference. First operand 6117 states and 8764 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) [2022-03-21 00:06:22,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:06:22,793 INFO L93 Difference]: Finished difference Result 8762 states and 12609 transitions. [2022-03-21 00:06:22,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:06:22,793 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 [2022-03-21 00:06:22,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:06:22,807 INFO L225 Difference]: With dead ends: 8762 [2022-03-21 00:06:22,808 INFO L226 Difference]: Without dead ends: 6097 [2022-03-21 00:06:22,815 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:06:22,816 INFO L913 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-21 00:06:22,816 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 5334 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-21 00:06:22,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6097 states. [2022-03-21 00:06:24,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6097 to 6097. [2022-03-21 00:06:24,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6097 states, 4107 states have (on average 1.356464572680789) internal successors, (5571), 4217 states have internal predecessors, (5571), 1578 states have call successors, (1578), 402 states have call predecessors, (1578), 411 states have return successors, (1590), 1542 states have call predecessors, (1590), 1571 states have call successors, (1590) [2022-03-21 00:06:24,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6097 states to 6097 states and 8739 transitions. [2022-03-21 00:06:24,467 INFO L78 Accepts]: Start accepts. Automaton has 6097 states and 8739 transitions. Word has length 76 [2022-03-21 00:06:24,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:06:24,468 INFO L478 AbstractCegarLoop]: Abstraction has 6097 states and 8739 transitions. [2022-03-21 00:06:24,468 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) [2022-03-21 00:06:24,468 INFO L276 IsEmpty]: Start isEmpty. Operand 6097 states and 8739 transitions. [2022-03-21 00:06:24,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-21 00:06:24,470 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:06:24,470 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:06:24,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-21 00:06:24,670 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 [2022-03-21 00:06:24,670 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:06:24,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:06:24,671 INFO L85 PathProgramCache]: Analyzing trace with hash -902471083, now seen corresponding path program 1 times [2022-03-21 00:06:24,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:24,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [911844943] [2022-03-21 00:06:24,672 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:06:24,673 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:06:24,673 INFO L85 PathProgramCache]: Analyzing trace with hash -902471083, now seen corresponding path program 2 times [2022-03-21 00:06:24,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:06:24,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042444585] [2022-03-21 00:06:24,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:06:24,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:06:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:24,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:06:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:24,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:06:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:24,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:06:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:24,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-21 00:06:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:24,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-21 00:06:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:24,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:24,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:06:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:24,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-21 00:06:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:25,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-21 00:06:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:25,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:06:25,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:06:25,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042444585] [2022-03-21 00:06:25,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042444585] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:06:25,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091993547] [2022-03-21 00:06:25,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:06:25,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:06:25,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:06:25,016 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) [2022-03-21 00:06:25,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-21 00:06:26,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:06:26,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:06:26,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-21 00:06:26,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:06:26,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:06:26,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:06:26,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091993547] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:26,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:06:26,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-03-21 00:06:26,356 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:06:26,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [911844943] [2022-03-21 00:06:26,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [911844943] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:26,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:06:26,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:06:26,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004877142] [2022-03-21 00:06:26,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:06:26,357 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-21 00:06:26,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:26,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-21 00:06:26,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-03-21 00:06:26,357 INFO L87 Difference]: Start difference. First operand 6097 states and 8739 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) [2022-03-21 00:06:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:06:28,249 INFO L93 Difference]: Finished difference Result 6112 states and 8756 transitions. [2022-03-21 00:06:28,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-21 00:06:28,249 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 [2022-03-21 00:06:28,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:06:28,260 INFO L225 Difference]: With dead ends: 6112 [2022-03-21 00:06:28,260 INFO L226 Difference]: Without dead ends: 6079 [2022-03-21 00:06:28,262 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-03-21 00:06:28,262 INFO L913 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:06:28,262 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26743 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:06:28,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6079 states. [2022-03-21 00:06:29,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6079 to 6079. [2022-03-21 00:06:29,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6079 states, 4096 states have (on average 1.357177734375) internal successors, (5559), 4206 states have internal predecessors, (5559), 1573 states have call successors, (1573), 400 states have call predecessors, (1573), 409 states have return successors, (1585), 1537 states have call predecessors, (1585), 1566 states have call successors, (1585) [2022-03-21 00:06:29,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6079 states to 6079 states and 8717 transitions. [2022-03-21 00:06:29,905 INFO L78 Accepts]: Start accepts. Automaton has 6079 states and 8717 transitions. Word has length 78 [2022-03-21 00:06:29,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:06:29,905 INFO L478 AbstractCegarLoop]: Abstraction has 6079 states and 8717 transitions. [2022-03-21 00:06:29,905 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) [2022-03-21 00:06:29,905 INFO L276 IsEmpty]: Start isEmpty. Operand 6079 states and 8717 transitions. [2022-03-21 00:06:29,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-21 00:06:29,907 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:06:29,908 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:06:29,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-21 00:06:30,110 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 [2022-03-21 00:06:30,110 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:06:30,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:06:30,110 INFO L85 PathProgramCache]: Analyzing trace with hash -363355348, now seen corresponding path program 1 times [2022-03-21 00:06:30,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:30,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [952723641] [2022-03-21 00:06:30,112 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:06:30,112 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:06:30,113 INFO L85 PathProgramCache]: Analyzing trace with hash -363355348, now seen corresponding path program 2 times [2022-03-21 00:06:30,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:06:30,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947240237] [2022-03-21 00:06:30,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:06:30,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:06:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:30,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:06:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:30,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:06:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:30,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:06:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:30,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:06:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:30,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-21 00:06:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:30,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:30,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-21 00:06:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:30,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-21 00:06:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:30,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-21 00:06:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:30,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:06:30,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:06:30,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947240237] [2022-03-21 00:06:30,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947240237] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:06:30,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380163201] [2022-03-21 00:06:30,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:06:30,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:06:30,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:06:30,467 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) [2022-03-21 00:06:30,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-21 00:06:31,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:06:31,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:06:31,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 2221 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-21 00:06:31,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:06:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:06:31,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:06:31,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380163201] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:31,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:06:31,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-21 00:06:31,813 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:06:31,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [952723641] [2022-03-21 00:06:31,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [952723641] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:31,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:06:31,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:06:31,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195296218] [2022-03-21 00:06:31,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:06:31,814 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:06:31,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:31,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:06:31,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:06:31,814 INFO L87 Difference]: Start difference. First operand 6079 states and 8717 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-21 00:06:33,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:06:33,114 INFO L93 Difference]: Finished difference Result 7004 states and 10004 transitions. [2022-03-21 00:06:33,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:06:33,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2022-03-21 00:06:33,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:06:33,125 INFO L225 Difference]: With dead ends: 7004 [2022-03-21 00:06:33,125 INFO L226 Difference]: Without dead ends: 4328 [2022-03-21 00:06:33,133 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:06:33,133 INFO L913 BasicCegarLoop]: 3778 mSDtfsCounter, 1983 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 5568 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:06:33,134 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1983 Valid, 5568 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-21 00:06:33,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4328 states. [2022-03-21 00:06:34,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4328 to 4210. [2022-03-21 00:06:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4210 states, 2812 states have (on average 1.3421052631578947) internal successors, (3774), 2885 states have internal predecessors, (3774), 1101 states have call successors, (1101), 289 states have call predecessors, (1101), 296 states have return successors, (1107), 1080 states have call predecessors, (1107), 1094 states have call successors, (1107) [2022-03-21 00:06:34,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4210 states to 4210 states and 5982 transitions. [2022-03-21 00:06:34,368 INFO L78 Accepts]: Start accepts. Automaton has 4210 states and 5982 transitions. Word has length 85 [2022-03-21 00:06:34,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:06:34,368 INFO L478 AbstractCegarLoop]: Abstraction has 4210 states and 5982 transitions. [2022-03-21 00:06:34,368 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-21 00:06:34,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4210 states and 5982 transitions. [2022-03-21 00:06:34,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-03-21 00:06:34,370 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:06:34,370 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:06:34,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-21 00:06:34,575 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 [2022-03-21 00:06:34,575 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:06:34,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:06:34,575 INFO L85 PathProgramCache]: Analyzing trace with hash -687831844, now seen corresponding path program 1 times [2022-03-21 00:06:34,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:34,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2129356446] [2022-03-21 00:06:34,578 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:06:34,578 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:06:34,578 INFO L85 PathProgramCache]: Analyzing trace with hash -687831844, now seen corresponding path program 2 times [2022-03-21 00:06:34,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:06:34,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944867012] [2022-03-21 00:06:34,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:06:34,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:06:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:34,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:06:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:34,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:06:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:34,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:06:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:34,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:06:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:34,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:06:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:34,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:34,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:06:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:34,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:34,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-21 00:06:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:34,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:06:34,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:06:34,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944867012] [2022-03-21 00:06:34,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944867012] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:06:34,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298434579] [2022-03-21 00:06:34,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:06:34,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:06:34,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:06:34,981 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) [2022-03-21 00:06:34,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-21 00:06:36,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:06:36,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:06:36,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-21 00:06:36,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:06:36,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:06:36,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:06:36,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298434579] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:36,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:06:36,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-21 00:06:36,332 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:06:36,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2129356446] [2022-03-21 00:06:36,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2129356446] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:36,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:06:36,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-21 00:06:36,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947772189] [2022-03-21 00:06:36,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:06:36,332 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-21 00:06:36,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:36,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-21 00:06:36,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-21 00:06:36,333 INFO L87 Difference]: Start difference. First operand 4210 states and 5982 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) [2022-03-21 00:06:38,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:06:40,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:06:41,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:06:41,962 INFO L93 Difference]: Finished difference Result 4232 states and 6008 transitions. [2022-03-21 00:06:41,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-21 00:06:41,962 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 [2022-03-21 00:06:41,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:06:41,971 INFO L225 Difference]: With dead ends: 4232 [2022-03-21 00:06:41,971 INFO L226 Difference]: Without dead ends: 4210 [2022-03-21 00:06:41,972 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:06:41,973 INFO L913 BasicCegarLoop]: 2679 mSDtfsCounter, 5 mSDsluCounter, 10649 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 13328 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-03-21 00:06:41,973 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 13328 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-03-21 00:06:41,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2022-03-21 00:06:43,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 4210. [2022-03-21 00:06:43,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4210 states, 2812 states have (on average 1.3410384068278804) internal successors, (3771), 2885 states have internal predecessors, (3771), 1101 states have call successors, (1101), 289 states have call predecessors, (1101), 296 states have return successors, (1107), 1080 states have call predecessors, (1107), 1094 states have call successors, (1107) [2022-03-21 00:06:43,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4210 states to 4210 states and 5979 transitions. [2022-03-21 00:06:43,211 INFO L78 Accepts]: Start accepts. Automaton has 4210 states and 5979 transitions. Word has length 87 [2022-03-21 00:06:43,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:06:43,212 INFO L478 AbstractCegarLoop]: Abstraction has 4210 states and 5979 transitions. [2022-03-21 00:06:43,212 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) [2022-03-21 00:06:43,212 INFO L276 IsEmpty]: Start isEmpty. Operand 4210 states and 5979 transitions. [2022-03-21 00:06:43,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-21 00:06:43,214 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:06:43,214 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:06:43,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-03-21 00:06:43,427 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 [2022-03-21 00:06:43,427 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:06:43,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:06:43,428 INFO L85 PathProgramCache]: Analyzing trace with hash 889808946, now seen corresponding path program 1 times [2022-03-21 00:06:43,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:43,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [984469730] [2022-03-21 00:06:43,429 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:06:43,430 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:06:43,430 INFO L85 PathProgramCache]: Analyzing trace with hash 889808946, now seen corresponding path program 2 times [2022-03-21 00:06:43,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:06:43,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910208551] [2022-03-21 00:06:43,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:06:43,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:06:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:43,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:06:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:43,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:06:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:43,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:06:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:43,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:06:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:43,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:06:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:43,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:43,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-21 00:06:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:43,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:43,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:06:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:43,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:43,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:06:43,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:06:43,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910208551] [2022-03-21 00:06:43,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910208551] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:06:43,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541158414] [2022-03-21 00:06:43,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:06:43,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:06:43,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:06:43,815 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) [2022-03-21 00:06:43,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-21 00:06:45,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:06:45,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:06:45,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-21 00:06:45,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:06:45,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:06:45,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:06:45,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541158414] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:45,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:06:45,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-21 00:06:45,201 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:06:45,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [984469730] [2022-03-21 00:06:45,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [984469730] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:45,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:06:45,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-21 00:06:45,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931760661] [2022-03-21 00:06:45,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:06:45,202 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-21 00:06:45,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:45,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-21 00:06:45,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-21 00:06:45,202 INFO L87 Difference]: Start difference. First operand 4210 states and 5979 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) [2022-03-21 00:06:46,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:06:46,726 INFO L93 Difference]: Finished difference Result 4239 states and 6014 transitions. [2022-03-21 00:06:46,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-21 00:06:46,726 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 [2022-03-21 00:06:46,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:06:46,735 INFO L225 Difference]: With dead ends: 4239 [2022-03-21 00:06:46,736 INFO L226 Difference]: Without dead ends: 3795 [2022-03-21 00:06:46,738 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:06:46,739 INFO L913 BasicCegarLoop]: 2676 mSDtfsCounter, 17 mSDsluCounter, 10635 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 13311 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-21 00:06:46,739 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 13311 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-21 00:06:46,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3795 states. [2022-03-21 00:06:47,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3795 to 3768. [2022-03-21 00:06:47,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3768 states, 2544 states have (on average 1.3400157232704402) internal successors, (3409), 2612 states have internal predecessors, (3409), 946 states have call successors, (946), 271 states have call predecessors, (946), 277 states have return successors, (951), 926 states have call predecessors, (951), 939 states have call successors, (951) [2022-03-21 00:06:47,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 5306 transitions. [2022-03-21 00:06:47,878 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 5306 transitions. Word has length 88 [2022-03-21 00:06:47,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:06:47,878 INFO L478 AbstractCegarLoop]: Abstraction has 3768 states and 5306 transitions. [2022-03-21 00:06:47,878 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) [2022-03-21 00:06:47,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 5306 transitions. [2022-03-21 00:06:47,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-03-21 00:06:47,880 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:06:47,880 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:06:47,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-21 00:06:48,081 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 [2022-03-21 00:06:48,081 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:06:48,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:06:48,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1084992937, now seen corresponding path program 1 times [2022-03-21 00:06:48,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:48,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1774557396] [2022-03-21 00:06:48,084 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:06:48,084 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:06:48,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1084992937, now seen corresponding path program 2 times [2022-03-21 00:06:48,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:06:48,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892026531] [2022-03-21 00:06:48,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:06:48,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:06:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:48,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:06:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:48,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:06:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:48,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:06:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:48,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:06:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:48,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:06:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:48,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:48,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-21 00:06:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:06:48,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:06:48,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892026531] [2022-03-21 00:06:48,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892026531] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:06:48,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074923450] [2022-03-21 00:06:48,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:06:48,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:06:48,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:06:48,419 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) [2022-03-21 00:06:48,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-21 00:06:49,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:06:49,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:06:49,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-21 00:06:49,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:06:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:06:49,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:06:49,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074923450] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:49,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:06:49,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-21 00:06:49,799 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:06:49,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1774557396] [2022-03-21 00:06:49,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1774557396] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:49,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:06:49,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-21 00:06:49,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132350509] [2022-03-21 00:06:49,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:06:49,799 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-21 00:06:49,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:49,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-21 00:06:49,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-03-21 00:06:49,800 INFO L87 Difference]: Start difference. First operand 3768 states and 5306 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) [2022-03-21 00:06:50,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:06:50,986 INFO L93 Difference]: Finished difference Result 3827 states and 5376 transitions. [2022-03-21 00:06:50,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-21 00:06:50,987 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 [2022-03-21 00:06:50,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:06:50,996 INFO L225 Difference]: With dead ends: 3827 [2022-03-21 00:06:50,996 INFO L226 Difference]: Without dead ends: 3780 [2022-03-21 00:06:50,998 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:06:50,999 INFO L913 BasicCegarLoop]: 2509 mSDtfsCounter, 5 mSDsluCounter, 10011 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-03-21 00:06:50,999 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 12520 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-21 00:06:51,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3780 states. [2022-03-21 00:06:52,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3780 to 3773. [2022-03-21 00:06:52,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3773 states, 2548 states have (on average 1.3394819466248038) internal successors, (3413), 2616 states have internal predecessors, (3413), 946 states have call successors, (946), 271 states have call predecessors, (946), 278 states have return successors, (952), 927 states have call predecessors, (952), 939 states have call successors, (952) [2022-03-21 00:06:52,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 5311 transitions. [2022-03-21 00:06:52,143 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 5311 transitions. Word has length 82 [2022-03-21 00:06:52,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:06:52,144 INFO L478 AbstractCegarLoop]: Abstraction has 3773 states and 5311 transitions. [2022-03-21 00:06:52,144 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) [2022-03-21 00:06:52,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 5311 transitions. [2022-03-21 00:06:52,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-21 00:06:52,146 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:06:52,146 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:06:52,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-21 00:06:52,346 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 [2022-03-21 00:06:52,346 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:06:52,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:06:52,347 INFO L85 PathProgramCache]: Analyzing trace with hash -10828563, now seen corresponding path program 1 times [2022-03-21 00:06:52,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:52,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1465222704] [2022-03-21 00:06:52,348 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:06:52,349 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:06:52,349 INFO L85 PathProgramCache]: Analyzing trace with hash -10828563, now seen corresponding path program 2 times [2022-03-21 00:06:52,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:06:52,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645964039] [2022-03-21 00:06:52,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:06:52,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:06:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:52,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:06:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:52,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:06:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:52,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:06:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:52,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:06:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:52,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:06:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:52,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:52,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-21 00:06:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:06:52,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:06:52,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645964039] [2022-03-21 00:06:52,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645964039] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:06:52,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474338037] [2022-03-21 00:06:52,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:06:52,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:06:52,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:06:52,712 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) [2022-03-21 00:06:52,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-21 00:06:53,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:06:53,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:06:53,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 1753 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-21 00:06:53,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:06:54,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:06:54,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:06:54,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474338037] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:54,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:06:54,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-21 00:06:54,114 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:06:54,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1465222704] [2022-03-21 00:06:54,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1465222704] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:54,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:06:54,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-21 00:06:54,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548938880] [2022-03-21 00:06:54,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:06:54,115 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-21 00:06:54,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:54,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-21 00:06:54,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-03-21 00:06:54,115 INFO L87 Difference]: Start difference. First operand 3773 states and 5311 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) [2022-03-21 00:06:55,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:06:55,303 INFO L93 Difference]: Finished difference Result 3887 states and 5444 transitions. [2022-03-21 00:06:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-21 00:06:55,304 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 [2022-03-21 00:06:55,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:06:55,311 INFO L225 Difference]: With dead ends: 3887 [2022-03-21 00:06:55,311 INFO L226 Difference]: Without dead ends: 3784 [2022-03-21 00:06:55,312 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:06:55,312 INFO L913 BasicCegarLoop]: 2511 mSDtfsCounter, 21 mSDsluCounter, 10003 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 12514 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:06:55,312 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 12514 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-21 00:06:55,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3784 states. [2022-03-21 00:06:56,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3784 to 3778. [2022-03-21 00:06:56,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3778 states, 2552 states have (on average 1.338949843260188) internal successors, (3417), 2620 states have internal predecessors, (3417), 946 states have call successors, (946), 271 states have call predecessors, (946), 279 states have return successors, (953), 928 states have call predecessors, (953), 939 states have call successors, (953) [2022-03-21 00:06:56,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3778 states to 3778 states and 5316 transitions. [2022-03-21 00:06:56,429 INFO L78 Accepts]: Start accepts. Automaton has 3778 states and 5316 transitions. Word has length 85 [2022-03-21 00:06:56,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:06:56,429 INFO L478 AbstractCegarLoop]: Abstraction has 3778 states and 5316 transitions. [2022-03-21 00:06:56,430 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) [2022-03-21 00:06:56,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3778 states and 5316 transitions. [2022-03-21 00:06:56,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-21 00:06:56,431 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:06:56,431 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:06:56,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-03-21 00:06:56,632 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 [2022-03-21 00:06:56,632 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:06:56,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:06:56,632 INFO L85 PathProgramCache]: Analyzing trace with hash -762410768, now seen corresponding path program 1 times [2022-03-21 00:06:56,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:56,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1234805072] [2022-03-21 00:06:56,634 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:06:56,634 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:06:56,634 INFO L85 PathProgramCache]: Analyzing trace with hash -762410768, now seen corresponding path program 2 times [2022-03-21 00:06:56,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:06:56,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315955897] [2022-03-21 00:06:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:06:56,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:06:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:56,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:06:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:56,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:06:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:56,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:06:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:56,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:06:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:56,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:56,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:56,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:06:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:56,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-21 00:06:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:56,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:06:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:56,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:56,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-21 00:06:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:56,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:06:56,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:06:56,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315955897] [2022-03-21 00:06:56,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315955897] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:06:56,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436840401] [2022-03-21 00:06:56,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:06:56,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:06:56,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:06:56,964 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) [2022-03-21 00:06:56,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-21 00:06:58,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:06:58,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:06:58,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-21 00:06:58,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:06:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:06:58,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:06:58,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436840401] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:58,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:06:58,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-21 00:06:58,355 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:06:58,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1234805072] [2022-03-21 00:06:58,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1234805072] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:58,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:06:58,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:06:58,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222929612] [2022-03-21 00:06:58,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:06:58,355 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:06:58,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:58,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:06:58,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:06:58,356 INFO L87 Difference]: Start difference. First operand 3778 states and 5316 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) [2022-03-21 00:06:59,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:06:59,472 INFO L93 Difference]: Finished difference Result 3840 states and 5386 transitions. [2022-03-21 00:06:59,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:06:59,473 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 [2022-03-21 00:06:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:06:59,480 INFO L225 Difference]: With dead ends: 3840 [2022-03-21 00:06:59,480 INFO L226 Difference]: Without dead ends: 3783 [2022-03-21 00:06:59,481 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:06:59,481 INFO L913 BasicCegarLoop]: 2509 mSDtfsCounter, 37 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 4967 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:06:59,481 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 4967 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-21 00:06:59,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2022-03-21 00:07:00,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3783. [2022-03-21 00:07:00,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3783 states, 2555 states have (on average 1.3385518590998042) internal successors, (3420), 2623 states have internal predecessors, (3420), 948 states have call successors, (948), 271 states have call predecessors, (948), 279 states have return successors, (955), 930 states have call predecessors, (955), 941 states have call successors, (955) [2022-03-21 00:07:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3783 states to 3783 states and 5323 transitions. [2022-03-21 00:07:00,617 INFO L78 Accepts]: Start accepts. Automaton has 3783 states and 5323 transitions. Word has length 88 [2022-03-21 00:07:00,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:00,617 INFO L478 AbstractCegarLoop]: Abstraction has 3783 states and 5323 transitions. [2022-03-21 00:07:00,617 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) [2022-03-21 00:07:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3783 states and 5323 transitions. [2022-03-21 00:07:00,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-21 00:07:00,619 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:00,619 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:07:00,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-21 00:07:00,819 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 [2022-03-21 00:07:00,820 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:00,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:00,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1395598084, now seen corresponding path program 1 times [2022-03-21 00:07:00,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:00,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1978841463] [2022-03-21 00:07:00,822 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:00,822 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:00,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1395598084, now seen corresponding path program 2 times [2022-03-21 00:07:00,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:00,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029458661] [2022-03-21 00:07:00,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:00,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:01,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:01,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:07:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:01,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:01,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:07:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:01,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:01,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:01,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:07:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:01,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-21 00:07:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:01,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-21 00:07:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:01,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:01,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-21 00:07:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:01,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:07:01,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:01,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029458661] [2022-03-21 00:07:01,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029458661] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:07:01,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537202209] [2022-03-21 00:07:01,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:07:01,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:07:01,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:07:01,193 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) [2022-03-21 00:07:01,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-21 00:07:02,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:07:02,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:07:02,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-21 00:07:02,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:07:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:07:02,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:07:02,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537202209] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:02,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:07:02,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-21 00:07:02,645 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:02,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1978841463] [2022-03-21 00:07:02,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1978841463] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:02,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:02,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-21 00:07:02,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344502167] [2022-03-21 00:07:02,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:02,646 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-21 00:07:02,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:02,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-21 00:07:02,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-21 00:07:02,646 INFO L87 Difference]: Start difference. First operand 3783 states and 5323 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) [2022-03-21 00:07:03,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:03,962 INFO L93 Difference]: Finished difference Result 3996 states and 5579 transitions. [2022-03-21 00:07:03,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-21 00:07:03,962 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 [2022-03-21 00:07:03,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:03,971 INFO L225 Difference]: With dead ends: 3996 [2022-03-21 00:07:03,971 INFO L226 Difference]: Without dead ends: 3771 [2022-03-21 00:07:03,973 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:07:03,973 INFO L913 BasicCegarLoop]: 2511 mSDtfsCounter, 5 mSDsluCounter, 10023 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 12534 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:03,973 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 12534 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:07:03,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2022-03-21 00:07:05,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 3771. [2022-03-21 00:07:05,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3771 states, 2548 states have (on average 1.3386970172684458) internal successors, (3411), 2616 states have internal predecessors, (3411), 944 states have call successors, (944), 271 states have call predecessors, (944), 278 states have return successors, (950), 925 states have call predecessors, (950), 937 states have call successors, (950) [2022-03-21 00:07:05,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 5305 transitions. [2022-03-21 00:07:05,108 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 5305 transitions. Word has length 89 [2022-03-21 00:07:05,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:05,108 INFO L478 AbstractCegarLoop]: Abstraction has 3771 states and 5305 transitions. [2022-03-21 00:07:05,108 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) [2022-03-21 00:07:05,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 5305 transitions. [2022-03-21 00:07:05,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-21 00:07:05,110 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:05,110 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:07:05,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-21 00:07:05,310 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 [2022-03-21 00:07:05,310 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:05,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:05,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1359885864, now seen corresponding path program 1 times [2022-03-21 00:07:05,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:05,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2071873069] [2022-03-21 00:07:05,313 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:05,314 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:05,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1359885864, now seen corresponding path program 2 times [2022-03-21 00:07:05,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:05,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285870158] [2022-03-21 00:07:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:05,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:05,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:05,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:07:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:05,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:05,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:07:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:05,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:07:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:05,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:05,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:07:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:05,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-21 00:07:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:05,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:05,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:07:05,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:05,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285870158] [2022-03-21 00:07:05,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285870158] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:07:05,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098294123] [2022-03-21 00:07:05,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:07:05,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:07:05,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:07:05,671 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) [2022-03-21 00:07:05,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-21 00:07:07,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:07:07,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:07:07,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-21 00:07:07,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:07:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:07:07,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:07:07,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098294123] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:07,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:07:07,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-21 00:07:07,103 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:07,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2071873069] [2022-03-21 00:07:07,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2071873069] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:07,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:07,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:07:07,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82381462] [2022-03-21 00:07:07,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:07,104 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:07:07,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:07,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:07:07,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:07:07,104 INFO L87 Difference]: Start difference. First operand 3771 states and 5305 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) [2022-03-21 00:07:08,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:08,255 INFO L93 Difference]: Finished difference Result 3826 states and 5368 transitions. [2022-03-21 00:07:08,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:07:08,256 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 [2022-03-21 00:07:08,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:08,264 INFO L225 Difference]: With dead ends: 3826 [2022-03-21 00:07:08,264 INFO L226 Difference]: Without dead ends: 3773 [2022-03-21 00:07:08,266 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:07:08,266 INFO L913 BasicCegarLoop]: 2559 mSDtfsCounter, 61 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 5044 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:08,267 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 5044 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-21 00:07:08,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2022-03-21 00:07:09,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3770. [2022-03-21 00:07:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3770 states, 2547 states have (on average 1.3372595210051041) internal successors, (3406), 2615 states have internal predecessors, (3406), 944 states have call successors, (944), 271 states have call predecessors, (944), 278 states have return successors, (950), 925 states have call predecessors, (950), 937 states have call successors, (950) [2022-03-21 00:07:09,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3770 states to 3770 states and 5300 transitions. [2022-03-21 00:07:09,396 INFO L78 Accepts]: Start accepts. Automaton has 3770 states and 5300 transitions. Word has length 88 [2022-03-21 00:07:09,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:09,396 INFO L478 AbstractCegarLoop]: Abstraction has 3770 states and 5300 transitions. [2022-03-21 00:07:09,396 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) [2022-03-21 00:07:09,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3770 states and 5300 transitions. [2022-03-21 00:07:09,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-03-21 00:07:09,397 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:09,398 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:07:09,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-21 00:07:09,598 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 [2022-03-21 00:07:09,598 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:09,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:09,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2048182127, now seen corresponding path program 1 times [2022-03-21 00:07:09,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:09,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [309502256] [2022-03-21 00:07:09,600 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:09,600 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:09,601 INFO L85 PathProgramCache]: Analyzing trace with hash -2048182127, now seen corresponding path program 2 times [2022-03-21 00:07:09,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:09,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636811086] [2022-03-21 00:07:09,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:09,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:09,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:09,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:07:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:09,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:09,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:07:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:09,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:07:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:09,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:09,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-21 00:07:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:09,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:07:09,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:09,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636811086] [2022-03-21 00:07:09,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636811086] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:07:09,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093992086] [2022-03-21 00:07:09,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:07:09,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:07:09,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:07:09,946 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) [2022-03-21 00:07:09,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-21 00:07:11,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:07:11,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:07:11,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-21 00:07:11,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:07:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:07:11,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:07:11,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093992086] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:11,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:07:11,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-21 00:07:11,431 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:11,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [309502256] [2022-03-21 00:07:11,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [309502256] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:11,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:11,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-21 00:07:11,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144726125] [2022-03-21 00:07:11,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:11,432 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-21 00:07:11,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:11,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-21 00:07:11,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-03-21 00:07:11,432 INFO L87 Difference]: Start difference. First operand 3770 states and 5300 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) [2022-03-21 00:07:12,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:12,628 INFO L93 Difference]: Finished difference Result 3829 states and 5371 transitions. [2022-03-21 00:07:12,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-21 00:07:12,628 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 [2022-03-21 00:07:12,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:12,637 INFO L225 Difference]: With dead ends: 3829 [2022-03-21 00:07:12,637 INFO L226 Difference]: Without dead ends: 3782 [2022-03-21 00:07:12,638 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:07:12,639 INFO L913 BasicCegarLoop]: 2502 mSDtfsCounter, 16 mSDsluCounter, 9966 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 12468 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:12,639 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 12468 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-21 00:07:12,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2022-03-21 00:07:13,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 3771. [2022-03-21 00:07:13,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3771 states, 2548 states have (on average 1.337519623233909) internal successors, (3408), 2616 states have internal predecessors, (3408), 944 states have call successors, (944), 271 states have call predecessors, (944), 278 states have return successors, (950), 925 states have call predecessors, (950), 937 states have call successors, (950) [2022-03-21 00:07:13,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 5302 transitions. [2022-03-21 00:07:13,770 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 5302 transitions. Word has length 87 [2022-03-21 00:07:13,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:13,771 INFO L478 AbstractCegarLoop]: Abstraction has 3771 states and 5302 transitions. [2022-03-21 00:07:13,771 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) [2022-03-21 00:07:13,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 5302 transitions. [2022-03-21 00:07:13,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-21 00:07:13,773 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:13,773 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:07:13,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-21 00:07:13,973 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 [2022-03-21 00:07:13,973 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:13,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:13,973 INFO L85 PathProgramCache]: Analyzing trace with hash -554188091, now seen corresponding path program 1 times [2022-03-21 00:07:13,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:13,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1975103783] [2022-03-21 00:07:13,975 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:13,975 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:13,976 INFO L85 PathProgramCache]: Analyzing trace with hash -554188091, now seen corresponding path program 2 times [2022-03-21 00:07:13,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:13,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704189802] [2022-03-21 00:07:13,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:13,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:14,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:14,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:07:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:14,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:14,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:07:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:14,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:14,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:14,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:14,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-21 00:07:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:14,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-21 00:07:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:14,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-21 00:07:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:14,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:07:14,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:14,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704189802] [2022-03-21 00:07:14,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704189802] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:07:14,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910127197] [2022-03-21 00:07:14,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:07:14,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:07:14,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:07:14,330 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) [2022-03-21 00:07:14,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-21 00:07:15,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:07:15,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:07:15,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-21 00:07:15,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:07:16,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:07:16,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:07:16,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910127197] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:16,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:07:16,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-03-21 00:07:16,036 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:16,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1975103783] [2022-03-21 00:07:16,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1975103783] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:16,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:16,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:16,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375707999] [2022-03-21 00:07:16,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:16,037 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:07:16,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:16,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:07:16,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:07:16,037 INFO L87 Difference]: Start difference. First operand 3771 states and 5302 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) [2022-03-21 00:07:19,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:19,973 INFO L93 Difference]: Finished difference Result 5070 states and 7198 transitions. [2022-03-21 00:07:19,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:07:19,973 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 [2022-03-21 00:07:19,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:19,983 INFO L225 Difference]: With dead ends: 5070 [2022-03-21 00:07:19,983 INFO L226 Difference]: Without dead ends: 5064 [2022-03-21 00:07:19,984 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:07:19,984 INFO L913 BasicCegarLoop]: 4271 mSDtfsCounter, 5470 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 1074 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5474 SdHoareTripleChecker+Valid, 5849 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1074 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:19,984 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5474 Valid, 5849 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1074 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-21 00:07:19,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5064 states. [2022-03-21 00:07:21,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5064 to 3771. [2022-03-21 00:07:21,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3771 states, 2548 states have (on average 1.33712715855573) internal successors, (3407), 2616 states have internal predecessors, (3407), 944 states have call successors, (944), 271 states have call predecessors, (944), 278 states have return successors, (950), 925 states have call predecessors, (950), 937 states have call successors, (950) [2022-03-21 00:07:21,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 5301 transitions. [2022-03-21 00:07:21,183 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 5301 transitions. Word has length 89 [2022-03-21 00:07:21,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:21,183 INFO L478 AbstractCegarLoop]: Abstraction has 3771 states and 5301 transitions. [2022-03-21 00:07:21,183 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) [2022-03-21 00:07:21,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 5301 transitions. [2022-03-21 00:07:21,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-21 00:07:21,185 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:21,185 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:07:21,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-21 00:07:21,385 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 [2022-03-21 00:07:21,385 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:21,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:21,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1738187805, now seen corresponding path program 1 times [2022-03-21 00:07:21,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:21,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1065750716] [2022-03-21 00:07:21,388 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:21,388 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:21,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1738187805, now seen corresponding path program 2 times [2022-03-21 00:07:21,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:21,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936948071] [2022-03-21 00:07:21,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:21,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:21,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:21,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:07:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:21,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:21,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:07:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:21,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:07:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:21,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:21,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-21 00:07:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:21,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:07:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:07:21,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:21,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936948071] [2022-03-21 00:07:21,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936948071] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:07:21,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631084554] [2022-03-21 00:07:21,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:07:21,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:07:21,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:07:21,741 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) [2022-03-21 00:07:21,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-21 00:07:23,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:07:23,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:07:23,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-21 00:07:23,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:07:23,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:07:23,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:07:23,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631084554] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:23,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:07:23,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-21 00:07:23,259 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:23,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1065750716] [2022-03-21 00:07:23,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1065750716] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:23,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:23,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:07:23,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640469209] [2022-03-21 00:07:23,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:23,259 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:07:23,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:23,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:07:23,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:07:23,260 INFO L87 Difference]: Start difference. First operand 3771 states and 5301 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) [2022-03-21 00:07:24,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:24,451 INFO L93 Difference]: Finished difference Result 5182 states and 7312 transitions. [2022-03-21 00:07:24,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:07:24,453 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 [2022-03-21 00:07:24,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:24,462 INFO L225 Difference]: With dead ends: 5182 [2022-03-21 00:07:24,462 INFO L226 Difference]: Without dead ends: 3734 [2022-03-21 00:07:24,465 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:07:24,466 INFO L913 BasicCegarLoop]: 2469 mSDtfsCounter, 2409 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2409 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:24,466 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2409 Valid, 2470 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-21 00:07:24,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2022-03-21 00:07:25,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 3734. [2022-03-21 00:07:25,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 2528 states have (on average 1.3366297468354431) internal successors, (3379), 2596 states have internal predecessors, (3379), 930 states have call successors, (930), 268 states have call predecessors, (930), 275 states have return successors, (936), 911 states have call predecessors, (936), 923 states have call successors, (936) [2022-03-21 00:07:25,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 5245 transitions. [2022-03-21 00:07:25,650 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 5245 transitions. Word has length 89 [2022-03-21 00:07:25,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:25,650 INFO L478 AbstractCegarLoop]: Abstraction has 3734 states and 5245 transitions. [2022-03-21 00:07:25,650 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) [2022-03-21 00:07:25,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 5245 transitions. [2022-03-21 00:07:25,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-03-21 00:07:25,652 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:25,652 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:07:25,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-21 00:07:25,852 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 [2022-03-21 00:07:25,853 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:25,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:25,853 INFO L85 PathProgramCache]: Analyzing trace with hash -899188565, now seen corresponding path program 1 times [2022-03-21 00:07:25,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:25,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [242893110] [2022-03-21 00:07:25,858 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:25,858 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:25,858 INFO L85 PathProgramCache]: Analyzing trace with hash -899188565, now seen corresponding path program 2 times [2022-03-21 00:07:25,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:25,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505782262] [2022-03-21 00:07:25,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:25,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:26,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:26,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:07:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:26,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:26,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:07:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:26,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:26,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:26,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:26,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-21 00:07:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:26,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-21 00:07:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:26,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-21 00:07:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:26,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:07:26,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:26,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505782262] [2022-03-21 00:07:26,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505782262] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:07:26,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491934116] [2022-03-21 00:07:26,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:07:26,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:07:26,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:07:26,222 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) [2022-03-21 00:07:26,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-21 00:07:27,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:07:27,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:07:27,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 1779 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-21 00:07:27,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:07:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:07:27,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:07:27,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491934116] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:27,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:07:27,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2022-03-21 00:07:27,793 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:27,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [242893110] [2022-03-21 00:07:27,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [242893110] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:27,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:27,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:07:27,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890630251] [2022-03-21 00:07:27,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:27,793 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-21 00:07:27,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:27,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-21 00:07:27,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-03-21 00:07:27,794 INFO L87 Difference]: Start difference. First operand 3734 states and 5245 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) [2022-03-21 00:07:29,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:29,168 INFO L93 Difference]: Finished difference Result 3826 states and 5351 transitions. [2022-03-21 00:07:29,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-21 00:07:29,169 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 [2022-03-21 00:07:29,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:29,177 INFO L225 Difference]: With dead ends: 3826 [2022-03-21 00:07:29,177 INFO L226 Difference]: Without dead ends: 3766 [2022-03-21 00:07:29,178 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-03-21 00:07:29,179 INFO L913 BasicCegarLoop]: 2465 mSDtfsCounter, 48 mSDsluCounter, 17193 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-03-21 00:07:29,179 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 19658 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:07:29,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2022-03-21 00:07:30,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3755. [2022-03-21 00:07:30,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 2545 states have (on average 1.3351669941060904) internal successors, (3398), 2614 states have internal predecessors, (3398), 932 states have call successors, (932), 268 states have call predecessors, (932), 277 states have return successors, (940), 915 states have call predecessors, (940), 925 states have call successors, (940) [2022-03-21 00:07:30,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5270 transitions. [2022-03-21 00:07:30,364 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5270 transitions. Word has length 90 [2022-03-21 00:07:30,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:30,364 INFO L478 AbstractCegarLoop]: Abstraction has 3755 states and 5270 transitions. [2022-03-21 00:07:30,364 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) [2022-03-21 00:07:30,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5270 transitions. [2022-03-21 00:07:30,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-03-21 00:07:30,366 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:30,366 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:07:30,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-21 00:07:30,566 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 [2022-03-21 00:07:30,566 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:30,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:30,567 INFO L85 PathProgramCache]: Analyzing trace with hash -898911735, now seen corresponding path program 1 times [2022-03-21 00:07:30,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:30,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [745634267] [2022-03-21 00:07:30,569 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:30,569 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:30,569 INFO L85 PathProgramCache]: Analyzing trace with hash -898911735, now seen corresponding path program 2 times [2022-03-21 00:07:30,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:30,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80561132] [2022-03-21 00:07:30,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:30,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:30,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:30,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:07:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:30,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:30,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:07:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:30,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:30,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:30,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:30,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-21 00:07:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:30,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-21 00:07:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:30,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-21 00:07:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:30,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:07:30,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:30,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80561132] [2022-03-21 00:07:30,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80561132] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:07:30,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538556993] [2022-03-21 00:07:30,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:07:30,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:07:30,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:07:30,940 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) [2022-03-21 00:07:30,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-21 00:07:32,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:07:32,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:07:32,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-21 00:07:32,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:07:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:07:32,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:07:32,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538556993] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:32,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:07:32,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-03-21 00:07:32,482 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:32,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [745634267] [2022-03-21 00:07:32,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [745634267] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:32,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:32,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:07:32,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667945517] [2022-03-21 00:07:32,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:32,482 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-21 00:07:32,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:32,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-21 00:07:32,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-03-21 00:07:32,483 INFO L87 Difference]: Start difference. First operand 3755 states and 5270 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-03-21 00:07:33,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:33,761 INFO L93 Difference]: Finished difference Result 6615 states and 9391 transitions. [2022-03-21 00:07:33,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:07:33,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 90 [2022-03-21 00:07:33,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:33,772 INFO L225 Difference]: With dead ends: 6615 [2022-03-21 00:07:33,772 INFO L226 Difference]: Without dead ends: 3764 [2022-03-21 00:07:33,780 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:07:33,781 INFO L913 BasicCegarLoop]: 2468 mSDtfsCounter, 3 mSDsluCounter, 4931 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7399 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:33,781 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 7399 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-21 00:07:33,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2022-03-21 00:07:34,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3764. [2022-03-21 00:07:34,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 2552 states have (on average 1.3350313479623825) internal successors, (3407), 2623 states have internal predecessors, (3407), 932 states have call successors, (932), 268 states have call predecessors, (932), 279 states have return successors, (942), 915 states have call predecessors, (942), 925 states have call successors, (942) [2022-03-21 00:07:34,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5281 transitions. [2022-03-21 00:07:34,975 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5281 transitions. Word has length 90 [2022-03-21 00:07:34,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:34,975 INFO L478 AbstractCegarLoop]: Abstraction has 3764 states and 5281 transitions. [2022-03-21 00:07:34,975 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-03-21 00:07:34,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5281 transitions. [2022-03-21 00:07:34,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-21 00:07:34,977 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:34,977 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:07:35,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-21 00:07:35,177 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 [2022-03-21 00:07:35,178 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:35,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:35,178 INFO L85 PathProgramCache]: Analyzing trace with hash 695765407, now seen corresponding path program 1 times [2022-03-21 00:07:35,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:35,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [410371961] [2022-03-21 00:07:35,180 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:35,180 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:35,180 INFO L85 PathProgramCache]: Analyzing trace with hash 695765407, now seen corresponding path program 2 times [2022-03-21 00:07:35,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:35,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855026949] [2022-03-21 00:07:35,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:35,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:35,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:35,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:07:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:35,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:35,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:07:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:35,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:07:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:35,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:35,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-21 00:07:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:07:35,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:35,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855026949] [2022-03-21 00:07:35,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855026949] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:07:35,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842610135] [2022-03-21 00:07:35,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:07:35,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:07:35,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:07:35,546 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) [2022-03-21 00:07:35,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-21 00:07:36,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:07:36,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:07:36,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-21 00:07:36,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:07:37,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:07:37,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:07:37,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842610135] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:37,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:07:37,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-21 00:07:37,113 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:37,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [410371961] [2022-03-21 00:07:37,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [410371961] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:37,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:37,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-21 00:07:37,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575663380] [2022-03-21 00:07:37,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:37,113 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-21 00:07:37,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:37,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-21 00:07:37,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-03-21 00:07:37,115 INFO L87 Difference]: Start difference. First operand 3764 states and 5281 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) [2022-03-21 00:07:38,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:38,395 INFO L93 Difference]: Finished difference Result 3827 states and 5355 transitions. [2022-03-21 00:07:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-21 00:07:38,396 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 [2022-03-21 00:07:38,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:38,405 INFO L225 Difference]: With dead ends: 3827 [2022-03-21 00:07:38,405 INFO L226 Difference]: Without dead ends: 3780 [2022-03-21 00:07:38,407 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:07:38,407 INFO L913 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 [2022-03-21 00:07:38,408 INFO L914 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] [2022-03-21 00:07:38,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3780 states. [2022-03-21 00:07:39,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3780 to 3768. [2022-03-21 00:07:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3768 states, 2555 states have (on average 1.3346379647749511) internal successors, (3410), 2626 states have internal predecessors, (3410), 932 states have call successors, (932), 268 states have call predecessors, (932), 280 states have return successors, (943), 916 states have call predecessors, (943), 925 states have call successors, (943) [2022-03-21 00:07:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 5285 transitions. [2022-03-21 00:07:39,599 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 5285 transitions. Word has length 89 [2022-03-21 00:07:39,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:39,600 INFO L478 AbstractCegarLoop]: Abstraction has 3768 states and 5285 transitions. [2022-03-21 00:07:39,600 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) [2022-03-21 00:07:39,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 5285 transitions. [2022-03-21 00:07:39,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-21 00:07:39,602 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:39,602 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:07:39,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-21 00:07:39,815 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 [2022-03-21 00:07:39,815 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:39,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:39,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2095810004, now seen corresponding path program 1 times [2022-03-21 00:07:39,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:39,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [37867667] [2022-03-21 00:07:39,818 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:39,818 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:39,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2095810004, now seen corresponding path program 2 times [2022-03-21 00:07:39,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:39,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589415666] [2022-03-21 00:07:39,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:39,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:40,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:40,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:07:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:40,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:07:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:40,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:40,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:40,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:40,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-21 00:07:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:40,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-21 00:07:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:40,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-21 00:07:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:40,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:40,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:07:40,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:40,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589415666] [2022-03-21 00:07:40,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589415666] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:07:40,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543894547] [2022-03-21 00:07:40,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:07:40,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:07:40,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:07:40,202 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) [2022-03-21 00:07:40,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-21 00:07:41,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:07:41,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:07:41,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1779 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-21 00:07:41,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:07:42,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-21 00:07:42,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:07:42,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543894547] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:42,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:07:42,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-03-21 00:07:42,003 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:42,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [37867667] [2022-03-21 00:07:42,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [37867667] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:42,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:42,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:07:42,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001379671] [2022-03-21 00:07:42,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:42,004 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:07:42,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:07:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:07:42,004 INFO L87 Difference]: Start difference. First operand 3768 states and 5285 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-03-21 00:07:45,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:45,998 INFO L93 Difference]: Finished difference Result 5054 states and 7161 transitions. [2022-03-21 00:07:45,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:07:45,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 92 [2022-03-21 00:07:45,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:46,009 INFO L225 Difference]: With dead ends: 5054 [2022-03-21 00:07:46,009 INFO L226 Difference]: Without dead ends: 5048 [2022-03-21 00:07:46,010 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:07:46,010 INFO L913 BasicCegarLoop]: 3895 mSDtfsCounter, 4240 mSDsluCounter, 3116 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4241 SdHoareTripleChecker+Valid, 7011 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:46,010 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4241 Valid, 7011 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-21 00:07:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5048 states. [2022-03-21 00:07:47,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 3748. [2022-03-21 00:07:47,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3748 states, 2539 states have (on average 1.3355651831429696) internal successors, (3391), 2609 states have internal predecessors, (3391), 930 states have call successors, (930), 268 states have call predecessors, (930), 278 states have return successors, (939), 912 states have call predecessors, (939), 923 states have call successors, (939) [2022-03-21 00:07:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3748 states to 3748 states and 5260 transitions. [2022-03-21 00:07:47,283 INFO L78 Accepts]: Start accepts. Automaton has 3748 states and 5260 transitions. Word has length 92 [2022-03-21 00:07:47,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:47,283 INFO L478 AbstractCegarLoop]: Abstraction has 3748 states and 5260 transitions. [2022-03-21 00:07:47,283 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-03-21 00:07:47,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3748 states and 5260 transitions. [2022-03-21 00:07:47,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-03-21 00:07:47,285 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:47,285 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:07:47,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-21 00:07:47,486 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 [2022-03-21 00:07:47,486 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:47,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:47,486 INFO L85 PathProgramCache]: Analyzing trace with hash 208412701, now seen corresponding path program 1 times [2022-03-21 00:07:47,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:47,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1097292208] [2022-03-21 00:07:47,488 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:47,488 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:47,488 INFO L85 PathProgramCache]: Analyzing trace with hash 208412701, now seen corresponding path program 2 times [2022-03-21 00:07:47,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:47,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140036729] [2022-03-21 00:07:47,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:47,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:47,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:47,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:07:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:47,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:47,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:07:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:47,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:47,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:47,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:47,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-21 00:07:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:47,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-21 00:07:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:47,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-21 00:07:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:47,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:07:47,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:47,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140036729] [2022-03-21 00:07:47,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140036729] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:07:47,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36331420] [2022-03-21 00:07:47,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:07:47,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:07:47,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:07:47,894 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) [2022-03-21 00:07:47,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-21 00:07:49,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:07:49,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:07:49,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-21 00:07:49,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:07:49,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-21 00:07:49,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:07:49,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36331420] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:49,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:07:49,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-03-21 00:07:49,541 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:49,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1097292208] [2022-03-21 00:07:49,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1097292208] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:49,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:49,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-21 00:07:49,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974086848] [2022-03-21 00:07:49,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:49,542 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-21 00:07:49,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:49,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-21 00:07:49,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-03-21 00:07:49,542 INFO L87 Difference]: Start difference. First operand 3748 states and 5260 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) [2022-03-21 00:07:50,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:50,839 INFO L93 Difference]: Finished difference Result 6590 states and 9347 transitions. [2022-03-21 00:07:50,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-21 00:07:50,840 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 [2022-03-21 00:07:50,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:50,850 INFO L225 Difference]: With dead ends: 6590 [2022-03-21 00:07:50,850 INFO L226 Difference]: Without dead ends: 3755 [2022-03-21 00:07:50,857 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:07:50,857 INFO L913 BasicCegarLoop]: 2469 mSDtfsCounter, 2 mSDsluCounter, 4931 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7400 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:50,857 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 7400 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-21 00:07:50,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3755 states. [2022-03-21 00:07:52,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3755 to 3751. [2022-03-21 00:07:52,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 2542 states have (on average 1.3359559402045633) internal successors, (3396), 2612 states have internal predecessors, (3396), 930 states have call successors, (930), 268 states have call predecessors, (930), 278 states have return successors, (939), 912 states have call predecessors, (939), 923 states have call successors, (939) [2022-03-21 00:07:52,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5265 transitions. [2022-03-21 00:07:52,081 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5265 transitions. Word has length 91 [2022-03-21 00:07:52,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:52,081 INFO L478 AbstractCegarLoop]: Abstraction has 3751 states and 5265 transitions. [2022-03-21 00:07:52,082 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) [2022-03-21 00:07:52,082 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5265 transitions. [2022-03-21 00:07:52,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-03-21 00:07:52,083 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:52,083 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:07:52,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-21 00:07:52,284 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 [2022-03-21 00:07:52,284 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:52,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:52,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1270672595, now seen corresponding path program 1 times [2022-03-21 00:07:52,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:52,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [109047521] [2022-03-21 00:07:52,286 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:52,286 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:52,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1270672595, now seen corresponding path program 2 times [2022-03-21 00:07:52,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:52,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965419278] [2022-03-21 00:07:52,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:52,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:52,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:52,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:07:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:52,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:52,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:07:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:52,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:07:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:52,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:52,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-21 00:07:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:07:52,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:52,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965419278] [2022-03-21 00:07:52,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965419278] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:07:52,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550273267] [2022-03-21 00:07:52,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:07:52,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:07:52,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:07:52,681 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) [2022-03-21 00:07:52,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-21 00:07:54,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:07:54,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:07:54,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-21 00:07:54,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:07:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:07:54,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:07:54,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550273267] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:54,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:07:54,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-21 00:07:54,331 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:54,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [109047521] [2022-03-21 00:07:54,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [109047521] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:54,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:54,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:07:54,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457363327] [2022-03-21 00:07:54,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:54,331 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:07:54,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:54,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:07:54,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:07:54,332 INFO L87 Difference]: Start difference. First operand 3751 states and 5265 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) [2022-03-21 00:07:55,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:55,559 INFO L93 Difference]: Finished difference Result 3797 states and 5319 transitions. [2022-03-21 00:07:55,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:07:55,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 90 [2022-03-21 00:07:55,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:55,569 INFO L225 Difference]: With dead ends: 3797 [2022-03-21 00:07:55,569 INFO L226 Difference]: Without dead ends: 3752 [2022-03-21 00:07:55,571 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:07:55,571 INFO L913 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, 0.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:55,571 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4932 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-21 00:07:55,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2022-03-21 00:07:56,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3751. [2022-03-21 00:07:56,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 2542 states have (on average 1.3359559402045633) internal successors, (3396), 2612 states have internal predecessors, (3396), 930 states have call successors, (930), 268 states have call predecessors, (930), 278 states have return successors, (939), 912 states have call predecessors, (939), 923 states have call successors, (939) [2022-03-21 00:07:56,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5265 transitions. [2022-03-21 00:07:56,798 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5265 transitions. Word has length 90 [2022-03-21 00:07:56,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:56,798 INFO L478 AbstractCegarLoop]: Abstraction has 3751 states and 5265 transitions. [2022-03-21 00:07:56,798 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) [2022-03-21 00:07:56,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5265 transitions. [2022-03-21 00:07:56,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-21 00:07:56,800 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:56,800 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:07:56,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-03-21 00:07:57,000 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 [2022-03-21 00:07:57,000 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:57,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:57,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1271171787, now seen corresponding path program 1 times [2022-03-21 00:07:57,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:57,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2042091038] [2022-03-21 00:07:57,003 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:57,003 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:57,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1271171787, now seen corresponding path program 2 times [2022-03-21 00:07:57,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:57,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995361219] [2022-03-21 00:07:57,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:57,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:57,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:57,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:07:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:57,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:57,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:07:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:57,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:57,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:57,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:57,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-21 00:07:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:57,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-21 00:07:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:57,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-21 00:07:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:57,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-21 00:07:57,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:57,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995361219] [2022-03-21 00:07:57,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995361219] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:07:57,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956989209] [2022-03-21 00:07:57,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:07:57,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:07:57,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:07:57,403 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) [2022-03-21 00:07:57,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-21 00:07:58,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:07:58,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:07:58,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-21 00:07:58,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:07:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-21 00:07:59,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:07:59,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956989209] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:59,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:07:59,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-03-21 00:07:59,214 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:59,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2042091038] [2022-03-21 00:07:59,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2042091038] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:59,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:59,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:07:59,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386727706] [2022-03-21 00:07:59,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:59,215 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-21 00:07:59,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:59,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-21 00:07:59,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-03-21 00:07:59,215 INFO L87 Difference]: Start difference. First operand 3751 states and 5265 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 9 states have internal predecessors, (68), 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) [2022-03-21 00:08:02,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:02,232 INFO L93 Difference]: Finished difference Result 3915 states and 5449 transitions. [2022-03-21 00:08:02,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-21 00:08:02,232 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 9 states have internal predecessors, (68), 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 92 [2022-03-21 00:08:02,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:02,240 INFO L225 Difference]: With dead ends: 3915 [2022-03-21 00:08:02,241 INFO L226 Difference]: Without dead ends: 3890 [2022-03-21 00:08:02,242 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2022-03-21 00:08:02,242 INFO L913 BasicCegarLoop]: 2577 mSDtfsCounter, 1130 mSDsluCounter, 17649 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 20226 SdHoareTripleChecker+Invalid, 2455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:02,242 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 20226 Invalid, 2455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-21 00:08:02,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2022-03-21 00:08:03,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 3750. [2022-03-21 00:08:03,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3750 states, 2541 states have (on average 1.3356946084218813) internal successors, (3394), 2611 states have internal predecessors, (3394), 930 states have call successors, (930), 268 states have call predecessors, (930), 278 states have return successors, (939), 912 states have call predecessors, (939), 923 states have call successors, (939) [2022-03-21 00:08:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3750 states to 3750 states and 5263 transitions. [2022-03-21 00:08:03,482 INFO L78 Accepts]: Start accepts. Automaton has 3750 states and 5263 transitions. Word has length 92 [2022-03-21 00:08:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:03,482 INFO L478 AbstractCegarLoop]: Abstraction has 3750 states and 5263 transitions. [2022-03-21 00:08:03,483 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 9 states have internal predecessors, (68), 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) [2022-03-21 00:08:03,483 INFO L276 IsEmpty]: Start isEmpty. Operand 3750 states and 5263 transitions. [2022-03-21 00:08:03,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-21 00:08:03,484 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:03,484 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:08:03,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-21 00:08:03,685 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 [2022-03-21 00:08:03,685 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:03,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:03,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1837779106, now seen corresponding path program 1 times [2022-03-21 00:08:03,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:03,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [337274139] [2022-03-21 00:08:03,687 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:03,687 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:03,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1837779106, now seen corresponding path program 2 times [2022-03-21 00:08:03,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:03,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407913090] [2022-03-21 00:08:03,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:03,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:03,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:03,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:08:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:03,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:08:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:03,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:08:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:03,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-21 00:08:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:03,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:03,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-21 00:08:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:03,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-21 00:08:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:04,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-21 00:08:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:04,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:08:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:04,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:04,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-21 00:08:04,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:04,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407913090] [2022-03-21 00:08:04,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407913090] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:08:04,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149864021] [2022-03-21 00:08:04,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:08:04,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:08:04,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:08:04,057 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) [2022-03-21 00:08:04,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-21 00:08:05,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:08:05,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:08:05,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 2170 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-21 00:08:05,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:08:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-21 00:08:05,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:08:05,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149864021] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:05,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:08:05,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-03-21 00:08:05,777 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:05,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [337274139] [2022-03-21 00:08:05,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [337274139] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:05,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:05,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:08:05,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253276681] [2022-03-21 00:08:05,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:05,777 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:08:05,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:05,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:08:05,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-21 00:08:05,778 INFO L87 Difference]: Start difference. First operand 3750 states and 5263 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-03-21 00:08:07,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:07,553 INFO L93 Difference]: Finished difference Result 5014 states and 7115 transitions. [2022-03-21 00:08:07,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:08:07,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 100 [2022-03-21 00:08:07,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:07,566 INFO L225 Difference]: With dead ends: 5014 [2022-03-21 00:08:07,566 INFO L226 Difference]: Without dead ends: 5011 [2022-03-21 00:08:07,568 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-21 00:08:07,569 INFO L913 BasicCegarLoop]: 4180 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, 6605 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 [2022-03-21 00:08:07,569 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1766 Valid, 6605 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:08:07,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5011 states. [2022-03-21 00:08:08,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5011 to 3754. [2022-03-21 00:08:08,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3754 states, 2545 states have (on average 1.3359528487229861) internal successors, (3400), 2615 states have internal predecessors, (3400), 930 states have call successors, (930), 268 states have call predecessors, (930), 278 states have return successors, (939), 912 states have call predecessors, (939), 923 states have call successors, (939) [2022-03-21 00:08:08,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3754 states to 3754 states and 5269 transitions. [2022-03-21 00:08:08,941 INFO L78 Accepts]: Start accepts. Automaton has 3754 states and 5269 transitions. Word has length 100 [2022-03-21 00:08:08,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:08,941 INFO L478 AbstractCegarLoop]: Abstraction has 3754 states and 5269 transitions. [2022-03-21 00:08:08,941 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-03-21 00:08:08,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3754 states and 5269 transitions. [2022-03-21 00:08:08,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-21 00:08:08,943 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:08,943 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:08:08,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-21 00:08:09,158 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 [2022-03-21 00:08:09,159 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:09,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:09,159 INFO L85 PathProgramCache]: Analyzing trace with hash -42351996, now seen corresponding path program 1 times [2022-03-21 00:08:09,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:09,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1355282731] [2022-03-21 00:08:09,161 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:09,161 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:09,161 INFO L85 PathProgramCache]: Analyzing trace with hash -42351996, now seen corresponding path program 2 times [2022-03-21 00:08:09,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:09,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769755900] [2022-03-21 00:08:09,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:09,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:09,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:09,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:08:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:09,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:08:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:09,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:08:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:09,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:09,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:09,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:08:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:09,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-21 00:08:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:09,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-21 00:08:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:09,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-21 00:08:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:09,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-21 00:08:09,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:09,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769755900] [2022-03-21 00:08:09,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769755900] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:08:09,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118636776] [2022-03-21 00:08:09,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:08:09,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:08:09,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:08:09,578 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) [2022-03-21 00:08:09,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-21 00:08:11,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:08:11,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:08:11,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-21 00:08:11,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:08:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-21 00:08:11,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:08:11,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118636776] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:11,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:08:11,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-03-21 00:08:11,663 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:11,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1355282731] [2022-03-21 00:08:11,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1355282731] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:11,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:11,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:08:11,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761871098] [2022-03-21 00:08:11,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:11,663 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-21 00:08:11,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:11,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-21 00:08:11,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-03-21 00:08:11,664 INFO L87 Difference]: Start difference. First operand 3754 states and 5269 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) [2022-03-21 00:08:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:13,193 INFO L93 Difference]: Finished difference Result 3884 states and 5414 transitions. [2022-03-21 00:08:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-21 00:08:13,193 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 [2022-03-21 00:08:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:13,201 INFO L225 Difference]: With dead ends: 3884 [2022-03-21 00:08:13,201 INFO L226 Difference]: Without dead ends: 3859 [2022-03-21 00:08:13,203 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-21 00:08:13,203 INFO L913 BasicCegarLoop]: 2485 mSDtfsCounter, 79 mSDsluCounter, 7606 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 10091 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:13,203 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 10091 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-21 00:08:13,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3859 states. [2022-03-21 00:08:14,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3859 to 3753. [2022-03-21 00:08:14,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3753 states, 2544 states have (on average 1.3356918238993711) internal successors, (3398), 2614 states have internal predecessors, (3398), 930 states have call successors, (930), 268 states have call predecessors, (930), 278 states have return successors, (939), 912 states have call predecessors, (939), 923 states have call successors, (939) [2022-03-21 00:08:14,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3753 states to 3753 states and 5267 transitions. [2022-03-21 00:08:14,558 INFO L78 Accepts]: Start accepts. Automaton has 3753 states and 5267 transitions. Word has length 93 [2022-03-21 00:08:14,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:14,558 INFO L478 AbstractCegarLoop]: Abstraction has 3753 states and 5267 transitions. [2022-03-21 00:08:14,558 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) [2022-03-21 00:08:14,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3753 states and 5267 transitions. [2022-03-21 00:08:14,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-21 00:08:14,560 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:14,560 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:08:14,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-21 00:08:14,761 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 [2022-03-21 00:08:14,761 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:14,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:14,762 INFO L85 PathProgramCache]: Analyzing trace with hash 681880132, now seen corresponding path program 1 times [2022-03-21 00:08:14,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:14,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1644083780] [2022-03-21 00:08:14,764 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:14,764 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:14,764 INFO L85 PathProgramCache]: Analyzing trace with hash 681880132, now seen corresponding path program 2 times [2022-03-21 00:08:14,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:14,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404603888] [2022-03-21 00:08:14,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:14,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:14,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:14,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:08:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:15,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:08:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:15,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:08:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:15,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:15,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:15,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:08:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:15,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-21 00:08:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:15,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-21 00:08:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:15,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-21 00:08:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:15,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-21 00:08:15,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:15,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404603888] [2022-03-21 00:08:15,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404603888] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:08:15,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790524040] [2022-03-21 00:08:15,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:08:15,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:08:15,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:08:15,134 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) [2022-03-21 00:08:15,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-21 00:08:16,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:08:16,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:08:16,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-21 00:08:16,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:08:17,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-21 00:08:17,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:08:17,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790524040] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:17,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:08:17,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-03-21 00:08:17,097 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:17,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1644083780] [2022-03-21 00:08:17,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1644083780] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:17,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:17,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:08:17,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609159897] [2022-03-21 00:08:17,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:17,098 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-21 00:08:17,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:17,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-21 00:08:17,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-03-21 00:08:17,098 INFO L87 Difference]: Start difference. First operand 3753 states and 5267 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) [2022-03-21 00:08:22,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:22,357 INFO L93 Difference]: Finished difference Result 6518 states and 9238 transitions. [2022-03-21 00:08:22,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-21 00:08:22,358 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 [2022-03-21 00:08:22,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:22,373 INFO L225 Difference]: With dead ends: 6518 [2022-03-21 00:08:22,373 INFO L226 Difference]: Without dead ends: 6434 [2022-03-21 00:08:22,376 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-21 00:08:22,376 INFO L913 BasicCegarLoop]: 4273 mSDtfsCounter, 1864 mSDsluCounter, 21930 mSDsCounter, 0 mSdLazyCounter, 5108 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 26203 SdHoareTripleChecker+Invalid, 5120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 5108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:22,376 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1865 Valid, 26203 Invalid, 5120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 5108 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-21 00:08:22,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6434 states. [2022-03-21 00:08:23,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6434 to 3764. [2022-03-21 00:08:23,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 2553 states have (on average 1.336466901684293) internal successors, (3412), 2625 states have internal predecessors, (3412), 930 states have call successors, (930), 268 states have call predecessors, (930), 280 states have return successors, (941), 912 states have call predecessors, (941), 923 states have call successors, (941) [2022-03-21 00:08:23,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5283 transitions. [2022-03-21 00:08:23,840 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5283 transitions. Word has length 93 [2022-03-21 00:08:23,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:23,840 INFO L478 AbstractCegarLoop]: Abstraction has 3764 states and 5283 transitions. [2022-03-21 00:08:23,841 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) [2022-03-21 00:08:23,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5283 transitions. [2022-03-21 00:08:23,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-03-21 00:08:23,842 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:23,842 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:08:23,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-03-21 00:08:24,056 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 [2022-03-21 00:08:24,057 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:24,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:24,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1579773890, now seen corresponding path program 1 times [2022-03-21 00:08:24,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:24,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1441911126] [2022-03-21 00:08:24,059 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:24,059 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:24,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1579773890, now seen corresponding path program 2 times [2022-03-21 00:08:24,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:24,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829508992] [2022-03-21 00:08:24,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:24,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:24,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:24,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:08:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:24,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:08:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:24,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:08:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:24,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:24,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:08:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:24,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:24,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-21 00:08:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:24,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:08:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:24,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:08:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:24,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-21 00:08:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:24,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:24,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:08:24,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:24,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829508992] [2022-03-21 00:08:24,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829508992] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:08:24,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442223694] [2022-03-21 00:08:24,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:08:24,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:08:24,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:08:24,515 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) [2022-03-21 00:08:24,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-21 00:08:26,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:08:26,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:08:26,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:08:26,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:08:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:08:26,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:08:26,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442223694] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:26,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:08:26,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-21 00:08:26,719 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:26,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1441911126] [2022-03-21 00:08:26,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1441911126] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:26,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:26,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:08:26,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069849684] [2022-03-21 00:08:26,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:26,720 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:08:26,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:26,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:08:26,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-21 00:08:26,720 INFO L87 Difference]: Start difference. First operand 3764 states and 5283 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) [2022-03-21 00:08:34,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:34,228 INFO L93 Difference]: Finished difference Result 6539 states and 9274 transitions. [2022-03-21 00:08:34,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-21 00:08:34,229 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 [2022-03-21 00:08:34,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:34,246 INFO L225 Difference]: With dead ends: 6539 [2022-03-21 00:08:34,246 INFO L226 Difference]: Without dead ends: 6518 [2022-03-21 00:08:34,249 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-21 00:08:34,249 INFO L913 BasicCegarLoop]: 3223 mSDtfsCounter, 2437 mSDsluCounter, 28539 mSDsCounter, 0 mSdLazyCounter, 9921 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 31762 SdHoareTripleChecker+Invalid, 9949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 9921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:34,249 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2438 Valid, 31762 Invalid, 9949 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 9921 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-03-21 00:08:34,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6518 states. [2022-03-21 00:08:35,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6518 to 3782. [2022-03-21 00:08:35,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3782 states, 2565 states have (on average 1.3348927875243666) internal successors, (3424), 2638 states have internal predecessors, (3424), 932 states have call successors, (932), 270 states have call predecessors, (932), 284 states have return successors, (952), 915 states have call predecessors, (952), 925 states have call successors, (952) [2022-03-21 00:08:35,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3782 states to 3782 states and 5308 transitions. [2022-03-21 00:08:35,780 INFO L78 Accepts]: Start accepts. Automaton has 3782 states and 5308 transitions. Word has length 106 [2022-03-21 00:08:35,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:35,780 INFO L478 AbstractCegarLoop]: Abstraction has 3782 states and 5308 transitions. [2022-03-21 00:08:35,780 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) [2022-03-21 00:08:35,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3782 states and 5308 transitions. [2022-03-21 00:08:35,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-21 00:08:35,782 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:35,782 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:08:35,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-03-21 00:08:35,982 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 [2022-03-21 00:08:35,983 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:35,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:35,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1494471512, now seen corresponding path program 1 times [2022-03-21 00:08:35,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:35,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1419832991] [2022-03-21 00:08:35,985 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:35,985 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:35,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1494471512, now seen corresponding path program 2 times [2022-03-21 00:08:35,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:35,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694000647] [2022-03-21 00:08:35,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:35,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:08:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:08:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:08:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:08:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:08:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:08:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-21 00:08:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:08:36,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:36,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694000647] [2022-03-21 00:08:36,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694000647] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:08:36,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477127075] [2022-03-21 00:08:36,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:08:36,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:08:36,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:08:36,482 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) [2022-03-21 00:08:36,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-21 00:08:38,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:08:38,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:08:38,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:08:38,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:08:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:08:38,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:08:38,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477127075] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:38,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:08:38,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-21 00:08:38,579 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:38,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1419832991] [2022-03-21 00:08:38,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1419832991] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:38,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:38,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:08:38,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070988550] [2022-03-21 00:08:38,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:38,580 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:08:38,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:38,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:08:38,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-21 00:08:38,580 INFO L87 Difference]: Start difference. First operand 3782 states and 5308 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) [2022-03-21 00:08:46,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:46,512 INFO L93 Difference]: Finished difference Result 6535 states and 9269 transitions. [2022-03-21 00:08:46,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-21 00:08:46,512 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 [2022-03-21 00:08:46,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:46,529 INFO L225 Difference]: With dead ends: 6535 [2022-03-21 00:08:46,529 INFO L226 Difference]: Without dead ends: 6514 [2022-03-21 00:08:46,531 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-21 00:08:46,531 INFO L913 BasicCegarLoop]: 3218 mSDtfsCounter, 2427 mSDsluCounter, 27012 mSDsCounter, 0 mSdLazyCounter, 10764 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2428 SdHoareTripleChecker+Valid, 30230 SdHoareTripleChecker+Invalid, 10787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 10764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:46,532 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2428 Valid, 30230 Invalid, 10787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 10764 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-03-21 00:08:46,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6514 states. [2022-03-21 00:08:48,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6514 to 3782. [2022-03-21 00:08:48,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3782 states, 2565 states have (on average 1.3348927875243666) internal successors, (3424), 2638 states have internal predecessors, (3424), 932 states have call successors, (932), 270 states have call predecessors, (932), 284 states have return successors, (951), 915 states have call predecessors, (951), 925 states have call successors, (951) [2022-03-21 00:08:48,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3782 states to 3782 states and 5307 transitions. [2022-03-21 00:08:48,122 INFO L78 Accepts]: Start accepts. Automaton has 3782 states and 5307 transitions. Word has length 103 [2022-03-21 00:08:48,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:48,123 INFO L478 AbstractCegarLoop]: Abstraction has 3782 states and 5307 transitions. [2022-03-21 00:08:48,123 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) [2022-03-21 00:08:48,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3782 states and 5307 transitions. [2022-03-21 00:08:48,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-21 00:08:48,124 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:48,124 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:08:48,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-03-21 00:08:48,325 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 [2022-03-21 00:08:48,325 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:48,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:48,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1012184443, now seen corresponding path program 1 times [2022-03-21 00:08:48,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:48,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2031673315] [2022-03-21 00:08:48,327 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:48,328 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:48,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1012184443, now seen corresponding path program 2 times [2022-03-21 00:08:48,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:48,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065481197] [2022-03-21 00:08:48,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:48,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:48,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:48,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:08:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:48,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:08:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:48,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:08:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:48,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:48,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:08:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:48,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:48,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:08:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:48,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:48,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:08:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:48,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-21 00:08:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:48,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:08:48,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:48,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065481197] [2022-03-21 00:08:48,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065481197] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:08:48,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534994647] [2022-03-21 00:08:48,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:08:48,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:08:48,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:08:48,783 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) [2022-03-21 00:08:48,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-21 00:08:50,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:08:50,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:08:50,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 2004 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:08:50,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:08:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:08:50,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:08:50,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534994647] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:50,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:08:50,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-21 00:08:50,897 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:50,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2031673315] [2022-03-21 00:08:50,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2031673315] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:50,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:50,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:08:50,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147023841] [2022-03-21 00:08:50,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:50,898 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:08:50,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:50,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:08:50,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-21 00:08:50,898 INFO L87 Difference]: Start difference. First operand 3782 states and 5307 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) [2022-03-21 00:08:59,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:59,277 INFO L93 Difference]: Finished difference Result 6531 states and 9264 transitions. [2022-03-21 00:08:59,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-21 00:08:59,278 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 [2022-03-21 00:08:59,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:59,298 INFO L225 Difference]: With dead ends: 6531 [2022-03-21 00:08:59,298 INFO L226 Difference]: Without dead ends: 6510 [2022-03-21 00:08:59,301 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-21 00:08:59,302 INFO L913 BasicCegarLoop]: 3196 mSDtfsCounter, 2423 mSDsluCounter, 24641 mSDsCounter, 0 mSdLazyCounter, 10723 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2424 SdHoareTripleChecker+Valid, 27837 SdHoareTripleChecker+Invalid, 10745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 10723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:59,302 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2424 Valid, 27837 Invalid, 10745 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 10723 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-03-21 00:08:59,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6510 states. [2022-03-21 00:09:00,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6510 to 3782. [2022-03-21 00:09:00,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3782 states, 2565 states have (on average 1.3348927875243666) internal successors, (3424), 2638 states have internal predecessors, (3424), 932 states have call successors, (932), 270 states have call predecessors, (932), 284 states have return successors, (950), 915 states have call predecessors, (950), 925 states have call successors, (950) [2022-03-21 00:09:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3782 states to 3782 states and 5306 transitions. [2022-03-21 00:09:00,943 INFO L78 Accepts]: Start accepts. Automaton has 3782 states and 5306 transitions. Word has length 102 [2022-03-21 00:09:00,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:09:00,943 INFO L478 AbstractCegarLoop]: Abstraction has 3782 states and 5306 transitions. [2022-03-21 00:09:00,943 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) [2022-03-21 00:09:00,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3782 states and 5306 transitions. [2022-03-21 00:09:00,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-03-21 00:09:00,944 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:09:00,945 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:09:00,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-21 00:09:01,159 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 [2022-03-21 00:09:01,159 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:09:01,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:09:01,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1654728766, now seen corresponding path program 1 times [2022-03-21 00:09:01,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:01,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [139213601] [2022-03-21 00:09:01,162 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:09:01,162 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:09:01,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1654728766, now seen corresponding path program 2 times [2022-03-21 00:09:01,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:09:01,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369778682] [2022-03-21 00:09:01,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:09:01,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:09:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:01,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:09:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:01,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:09:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:01,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:09:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:01,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:09:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:01,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:09:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:01,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:09:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:01,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:09:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:01,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-21 00:09:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:01,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:09:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:01,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:09:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:01,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-21 00:09:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:01,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:09:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:09:01,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:09:01,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369778682] [2022-03-21 00:09:01,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369778682] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:09:01,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094899421] [2022-03-21 00:09:01,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:09:01,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:09:01,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:09:01,574 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) [2022-03-21 00:09:01,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-21 00:09:03,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:09:03,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:09:03,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-21 00:09:03,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:09:03,605 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 [2022-03-21 00:09:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:09:03,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:09:03,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094899421] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:03,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:09:03,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-03-21 00:09:03,676 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:09:03,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [139213601] [2022-03-21 00:09:03,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [139213601] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:03,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:03,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:09:03,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319749642] [2022-03-21 00:09:03,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:09:03,676 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-21 00:09:03,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:03,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-21 00:09:03,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-03-21 00:09:03,677 INFO L87 Difference]: Start difference. First operand 3782 states and 5306 transitions. Second operand has 11 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 6 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2022-03-21 00:09:11,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:13,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:15,307 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 [] [2022-03-21 00:09:24,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:09:24,036 INFO L93 Difference]: Finished difference Result 4478 states and 6342 transitions. [2022-03-21 00:09:24,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-21 00:09:24,037 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 6 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) Word has length 95 [2022-03-21 00:09:24,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:09:24,046 INFO L225 Difference]: With dead ends: 4478 [2022-03-21 00:09:24,046 INFO L226 Difference]: Without dead ends: 4386 [2022-03-21 00:09:24,048 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2022-03-21 00:09:24,048 INFO L913 BasicCegarLoop]: 2060 mSDtfsCounter, 4009 mSDsluCounter, 5249 mSDsCounter, 0 mSdLazyCounter, 8075 mSolverCounterSat, 1933 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4385 SdHoareTripleChecker+Valid, 7309 SdHoareTripleChecker+Invalid, 10009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1933 IncrementalHoareTripleChecker+Valid, 8075 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:09:24,048 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4385 Valid, 7309 Invalid, 10009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1933 Valid, 8075 Invalid, 1 Unknown, 0 Unchecked, 18.0s Time] [2022-03-21 00:09:24,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4386 states. [2022-03-21 00:09:25,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4386 to 3788. [2022-03-21 00:09:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3788 states, 2569 states have (on average 1.3343713507201245) internal successors, (3428), 2642 states have internal predecessors, (3428), 933 states have call successors, (933), 270 states have call predecessors, (933), 285 states have return successors, (952), 917 states have call predecessors, (952), 926 states have call successors, (952) [2022-03-21 00:09:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 5313 transitions. [2022-03-21 00:09:25,675 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 5313 transitions. Word has length 95 [2022-03-21 00:09:25,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:09:25,676 INFO L478 AbstractCegarLoop]: Abstraction has 3788 states and 5313 transitions. [2022-03-21 00:09:25,676 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 6 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2022-03-21 00:09:25,676 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 5313 transitions. [2022-03-21 00:09:25,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-21 00:09:25,678 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:09:25,678 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:09:25,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-21 00:09:25,891 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 [2022-03-21 00:09:25,891 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:09:25,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:09:25,892 INFO L85 PathProgramCache]: Analyzing trace with hash -846383548, now seen corresponding path program 1 times [2022-03-21 00:09:25,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:25,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1405867480] [2022-03-21 00:09:25,894 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:09:25,894 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:09:25,894 INFO L85 PathProgramCache]: Analyzing trace with hash -846383548, now seen corresponding path program 2 times [2022-03-21 00:09:25,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:09:25,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461112835] [2022-03-21 00:09:25,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:09:25,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:09:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:26,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:09:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:26,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:09:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:26,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:09:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:26,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:09:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:26,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-21 00:09:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:26,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:09:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:26,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-21 00:09:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-21 00:09:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:26,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-21 00:09:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:26,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:09:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:26,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:09:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-21 00:09:26,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:09:26,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461112835] [2022-03-21 00:09:26,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461112835] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:26,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:26,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-21 00:09:26,353 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:09:26,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1405867480] [2022-03-21 00:09:26,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1405867480] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:26,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:26,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-21 00:09:26,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440591008] [2022-03-21 00:09:26,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:09:26,353 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-21 00:09:26,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:26,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-21 00:09:26,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-21 00:09:26,354 INFO L87 Difference]: Start difference. First operand 3788 states and 5313 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 5 states have internal predecessors, (72), 4 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-21 00:09:36,255 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 [] [2022-03-21 00:09:44,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:46,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:49,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:50,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:52,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:54,887 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:56,753 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:58,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:08,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:10,356 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:40,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:10:40,420 INFO L93 Difference]: Finished difference Result 10209 states and 14846 transitions. [2022-03-21 00:10:40,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-21 00:10:40,420 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 5 states have internal predecessors, (72), 4 states have call successors, (17), 11 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 100 [2022-03-21 00:10:40,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:10:40,441 INFO L225 Difference]: With dead ends: 10209 [2022-03-21 00:10:40,442 INFO L226 Difference]: Without dead ends: 7623 [2022-03-21 00:10:40,450 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=371, Invalid=1035, Unknown=0, NotChecked=0, Total=1406 [2022-03-21 00:10:40,450 INFO L913 BasicCegarLoop]: 2811 mSDtfsCounter, 10148 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 15273 mSolverCounterSat, 9783 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10179 SdHoareTripleChecker+Valid, 3843 SdHoareTripleChecker+Invalid, 25064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9783 IncrementalHoareTripleChecker+Valid, 15273 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.6s IncrementalHoareTripleChecker+Time [2022-03-21 00:10:40,450 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10179 Valid, 3843 Invalid, 25064 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9783 Valid, 15273 Invalid, 8 Unknown, 0 Unchecked, 66.6s Time] [2022-03-21 00:10:40,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7623 states. [2022-03-21 00:10:42,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7623 to 3785. [2022-03-21 00:10:42,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3785 states, 2566 states have (on average 1.333203429462198) internal successors, (3421), 2639 states have internal predecessors, (3421), 933 states have call successors, (933), 270 states have call predecessors, (933), 285 states have return successors, (952), 917 states have call predecessors, (952), 926 states have call successors, (952) [2022-03-21 00:10:42,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3785 states to 3785 states and 5306 transitions. [2022-03-21 00:10:42,560 INFO L78 Accepts]: Start accepts. Automaton has 3785 states and 5306 transitions. Word has length 100 [2022-03-21 00:10:42,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:10:42,560 INFO L478 AbstractCegarLoop]: Abstraction has 3785 states and 5306 transitions. [2022-03-21 00:10:42,560 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 5 states have internal predecessors, (72), 4 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-21 00:10:42,560 INFO L276 IsEmpty]: Start isEmpty. Operand 3785 states and 5306 transitions. [2022-03-21 00:10:42,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-21 00:10:42,562 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:10:42,562 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:10:42,562 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-03-21 00:10:42,562 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:10:42,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:10:42,562 INFO L85 PathProgramCache]: Analyzing trace with hash 166516338, now seen corresponding path program 1 times [2022-03-21 00:10:42,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:42,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [270228906] [2022-03-21 00:10:42,564 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:10:42,564 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:10:42,564 INFO L85 PathProgramCache]: Analyzing trace with hash 166516338, now seen corresponding path program 2 times [2022-03-21 00:10:42,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:10:42,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004568224] [2022-03-21 00:10:42,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:10:42,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:10:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:42,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:10:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:42,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:10:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:42,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:10:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:42,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:10:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:42,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:10:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:42,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:10:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:42,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:10:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:42,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:10:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:43,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:10:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:43,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:10:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:43,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-21 00:10:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:43,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:10:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:10:43,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:10:43,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004568224] [2022-03-21 00:10:43,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004568224] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:10:43,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383259451] [2022-03-21 00:10:43,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:10:43,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:10:43,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:10:43,053 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) [2022-03-21 00:10:43,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-21 00:10:44,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:10:44,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:10:44,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-21 00:10:44,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:10:44,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-21 00:10:45,131 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 [2022-03-21 00:10:45,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:10:45,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:10:45,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383259451] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:45,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:10:45,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-03-21 00:10:45,222 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:10:45,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [270228906] [2022-03-21 00:10:45,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [270228906] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:45,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:45,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:10:45,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971854202] [2022-03-21 00:10:45,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:10:45,223 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-21 00:10:45,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:45,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-21 00:10:45,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-03-21 00:10:45,223 INFO L87 Difference]: Start difference. First operand 3785 states and 5306 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2022-03-21 00:10:54,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:56,339 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:58,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:11:00,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:11:12,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:11:12,369 INFO L93 Difference]: Finished difference Result 7325 states and 10419 transitions. [2022-03-21 00:11:12,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-21 00:11:12,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 103 [2022-03-21 00:11:12,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:11:12,380 INFO L225 Difference]: With dead ends: 7325 [2022-03-21 00:11:12,381 INFO L226 Difference]: Without dead ends: 4362 [2022-03-21 00:11:12,386 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-03-21 00:11:12,387 INFO L913 BasicCegarLoop]: 2103 mSDtfsCounter, 904 mSDsluCounter, 5870 mSDsCounter, 0 mSdLazyCounter, 7617 mSolverCounterSat, 513 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 7973 SdHoareTripleChecker+Invalid, 8133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 7617 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:11:12,387 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 7973 Invalid, 8133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 7617 Invalid, 3 Unknown, 0 Unchecked, 24.1s Time] [2022-03-21 00:11:12,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2022-03-21 00:11:14,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 3785. [2022-03-21 00:11:14,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3785 states, 2566 states have (on average 1.332813717848792) internal successors, (3420), 2639 states have internal predecessors, (3420), 933 states have call successors, (933), 270 states have call predecessors, (933), 285 states have return successors, (952), 917 states have call predecessors, (952), 926 states have call successors, (952) [2022-03-21 00:11:14,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3785 states to 3785 states and 5305 transitions. [2022-03-21 00:11:14,487 INFO L78 Accepts]: Start accepts. Automaton has 3785 states and 5305 transitions. Word has length 103 [2022-03-21 00:11:14,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:11:14,487 INFO L478 AbstractCegarLoop]: Abstraction has 3785 states and 5305 transitions. [2022-03-21 00:11:14,487 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2022-03-21 00:11:14,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3785 states and 5305 transitions. [2022-03-21 00:11:14,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-03-21 00:11:14,489 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:11:14,489 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:11:14,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-21 00:11:14,699 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,SelfDestructingSolverStorable68 [2022-03-21 00:11:14,699 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:11:14,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:11:14,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1908271104, now seen corresponding path program 1 times [2022-03-21 00:11:14,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:14,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [501724056] [2022-03-21 00:11:14,702 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:11:14,702 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:11:14,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1908271104, now seen corresponding path program 2 times [2022-03-21 00:11:14,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:11:14,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751613848] [2022-03-21 00:11:14,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:11:14,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:11:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:14,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:11:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:14,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:11:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:14,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:11:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:15,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:11:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:11:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:15,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:11:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:15,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:11:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:15,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-21 00:11:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:15,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:11:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:15,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:11:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:15,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-21 00:11:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:15,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:11:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:11:15,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:11:15,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751613848] [2022-03-21 00:11:15,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751613848] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:11:15,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251715112] [2022-03-21 00:11:15,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:11:15,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:11:15,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:11:15,138 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) [2022-03-21 00:11:15,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-21 00:11:16,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:11:16,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:11:17,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:11:17,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:11:17,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:11:17,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:11:17,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251715112] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:17,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:11:17,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2022-03-21 00:11:17,350 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:11:17,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [501724056] [2022-03-21 00:11:17,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [501724056] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:17,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:17,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:11:17,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019976474] [2022-03-21 00:11:17,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:11:17,350 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:11:17,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:17,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:11:17,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-03-21 00:11:17,351 INFO L87 Difference]: Start difference. First operand 3785 states and 5305 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) [2022-03-21 00:11:26,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:11:26,412 INFO L93 Difference]: Finished difference Result 6527 states and 9251 transitions. [2022-03-21 00:11:26,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-21 00:11:26,412 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 [2022-03-21 00:11:26,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:11:26,429 INFO L225 Difference]: With dead ends: 6527 [2022-03-21 00:11:26,430 INFO L226 Difference]: Without dead ends: 6509 [2022-03-21 00:11:26,432 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-21 00:11:26,433 INFO L913 BasicCegarLoop]: 3187 mSDtfsCounter, 2429 mSDsluCounter, 23759 mSDsCounter, 0 mSdLazyCounter, 9803 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2430 SdHoareTripleChecker+Valid, 26946 SdHoareTripleChecker+Invalid, 9831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 9803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-21 00:11:26,433 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2430 Valid, 26946 Invalid, 9831 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 9803 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-03-21 00:11:26,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6509 states. [2022-03-21 00:11:28,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6509 to 3788. [2022-03-21 00:11:28,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3788 states, 2568 states have (on average 1.3325545171339563) internal successors, (3422), 2641 states have internal predecessors, (3422), 933 states have call successors, (933), 270 states have call predecessors, (933), 286 states have return successors, (953), 918 states have call predecessors, (953), 926 states have call successors, (953) [2022-03-21 00:11:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 5308 transitions. [2022-03-21 00:11:28,659 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 5308 transitions. Word has length 95 [2022-03-21 00:11:28,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:11:28,659 INFO L478 AbstractCegarLoop]: Abstraction has 3788 states and 5308 transitions. [2022-03-21 00:11:28,659 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) [2022-03-21 00:11:28,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 5308 transitions. [2022-03-21 00:11:28,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-21 00:11:28,660 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:11:28,661 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:11:28,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-03-21 00:11:28,863 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,SelfDestructingSolverStorable69 [2022-03-21 00:11:28,864 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:11:28,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:11:28,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1320781830, now seen corresponding path program 1 times [2022-03-21 00:11:28,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:28,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [37163618] [2022-03-21 00:11:28,866 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:11:28,866 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:11:28,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1320781830, now seen corresponding path program 2 times [2022-03-21 00:11:28,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:11:28,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770458241] [2022-03-21 00:11:28,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:11:28,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:11:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:29,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:11:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:29,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:11:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:29,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:11:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:29,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:11:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:29,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:11:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:29,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:11:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:29,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:11:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:29,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-21 00:11:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:29,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:11:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:29,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:11:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:29,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-21 00:11:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:29,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:11:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:11:29,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:11:29,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770458241] [2022-03-21 00:11:29,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770458241] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:11:29,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668252702] [2022-03-21 00:11:29,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:11:29,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:11:29,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:11:29,287 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) [2022-03-21 00:11:29,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-21 00:11:31,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:11:31,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:11:31,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:11:31,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:11:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:11:31,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:11:31,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668252702] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:31,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:11:31,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2022-03-21 00:11:31,524 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:11:31,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [37163618] [2022-03-21 00:11:31,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [37163618] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:31,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:31,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:11:31,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405982054] [2022-03-21 00:11:31,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:11:31,524 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:11:31,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:31,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:11:31,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-03-21 00:11:31,525 INFO L87 Difference]: Start difference. First operand 3788 states and 5308 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) [2022-03-21 00:11:40,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:11:40,536 INFO L93 Difference]: Finished difference Result 6526 states and 9249 transitions. [2022-03-21 00:11:40,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-21 00:11:40,537 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 [2022-03-21 00:11:40,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:11:40,553 INFO L225 Difference]: With dead ends: 6526 [2022-03-21 00:11:40,553 INFO L226 Difference]: Without dead ends: 6505 [2022-03-21 00:11:40,556 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-21 00:11:40,557 INFO L913 BasicCegarLoop]: 2983 mSDtfsCounter, 2418 mSDsluCounter, 25869 mSDsCounter, 0 mSdLazyCounter, 9837 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2419 SdHoareTripleChecker+Valid, 28852 SdHoareTripleChecker+Invalid, 9860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 9837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-03-21 00:11:40,557 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2419 Valid, 28852 Invalid, 9860 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 9837 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-03-21 00:11:40,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6505 states. [2022-03-21 00:11:42,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6505 to 3785. [2022-03-21 00:11:42,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3785 states, 2566 states have (on average 1.332813717848792) internal successors, (3420), 2639 states have internal predecessors, (3420), 933 states have call successors, (933), 270 states have call predecessors, (933), 285 states have return successors, (951), 917 states have call predecessors, (951), 926 states have call successors, (951) [2022-03-21 00:11:42,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3785 states to 3785 states and 5304 transitions. [2022-03-21 00:11:42,803 INFO L78 Accepts]: Start accepts. Automaton has 3785 states and 5304 transitions. Word has length 96 [2022-03-21 00:11:42,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:11:42,804 INFO L478 AbstractCegarLoop]: Abstraction has 3785 states and 5304 transitions. [2022-03-21 00:11:42,804 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) [2022-03-21 00:11:42,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3785 states and 5304 transitions. [2022-03-21 00:11:42,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-21 00:11:42,805 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:11:42,805 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:11:42,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-21 00:11:43,005 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,SelfDestructingSolverStorable70 [2022-03-21 00:11:43,006 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:11:43,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:11:43,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1608832473, now seen corresponding path program 1 times [2022-03-21 00:11:43,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:43,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1612735193] [2022-03-21 00:11:43,008 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:11:43,008 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:11:43,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1608832473, now seen corresponding path program 2 times [2022-03-21 00:11:43,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:11:43,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681385704] [2022-03-21 00:11:43,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:11:43,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:11:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:43,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:11:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:43,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:11:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:43,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:11:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:43,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:11:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:43,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:11:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:43,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:11:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:43,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:11:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:43,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:11:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:43,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:11:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:43,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:11:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:43,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-21 00:11:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:43,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:11:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:43,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:11:43,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:11:43,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681385704] [2022-03-21 00:11:43,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681385704] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:11:43,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310361437] [2022-03-21 00:11:43,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:11:43,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:11:43,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:11:43,430 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) [2022-03-21 00:11:43,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-21 00:11:45,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:11:45,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:11:45,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 1978 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:11:45,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:11:45,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:11:45,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:11:45,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310361437] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:45,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:11:45,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-21 00:11:45,605 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:11:45,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1612735193] [2022-03-21 00:11:45,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1612735193] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:45,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:45,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:11:45,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485689589] [2022-03-21 00:11:45,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:11:45,606 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:11:45,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:45,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:11:45,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-21 00:11:45,607 INFO L87 Difference]: Start difference. First operand 3785 states and 5304 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) [2022-03-21 00:11:55,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:11:55,170 INFO L93 Difference]: Finished difference Result 6522 states and 9244 transitions. [2022-03-21 00:11:55,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-21 00:11:55,170 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 [2022-03-21 00:11:55,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:11:55,187 INFO L225 Difference]: With dead ends: 6522 [2022-03-21 00:11:55,187 INFO L226 Difference]: Without dead ends: 6501 [2022-03-21 00:11:55,190 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-21 00:11:55,190 INFO L913 BasicCegarLoop]: 2951 mSDtfsCounter, 2412 mSDsluCounter, 27679 mSDsCounter, 0 mSdLazyCounter, 10704 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2413 SdHoareTripleChecker+Valid, 30630 SdHoareTripleChecker+Invalid, 10724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 10704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:11:55,190 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2413 Valid, 30630 Invalid, 10724 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 10704 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-03-21 00:11:55,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6501 states. [2022-03-21 00:11:57,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6501 to 3785. [2022-03-21 00:11:57,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3785 states, 2566 states have (on average 1.332813717848792) internal successors, (3420), 2639 states have internal predecessors, (3420), 933 states have call successors, (933), 270 states have call predecessors, (933), 285 states have return successors, (950), 917 states have call predecessors, (950), 926 states have call successors, (950) [2022-03-21 00:11:57,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3785 states to 3785 states and 5303 transitions. [2022-03-21 00:11:57,519 INFO L78 Accepts]: Start accepts. Automaton has 3785 states and 5303 transitions. Word has length 102 [2022-03-21 00:11:57,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:11:57,519 INFO L478 AbstractCegarLoop]: Abstraction has 3785 states and 5303 transitions. [2022-03-21 00:11:57,519 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) [2022-03-21 00:11:57,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3785 states and 5303 transitions. [2022-03-21 00:11:57,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-21 00:11:57,521 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:11:57,521 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:11:57,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-03-21 00:11:57,743 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:11:57,743 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:11:57,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:11:57,744 INFO L85 PathProgramCache]: Analyzing trace with hash -720706508, now seen corresponding path program 1 times [2022-03-21 00:11:57,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:57,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [844015327] [2022-03-21 00:11:57,746 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:11:57,746 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:11:57,746 INFO L85 PathProgramCache]: Analyzing trace with hash -720706508, now seen corresponding path program 2 times [2022-03-21 00:11:57,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:11:57,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16176601] [2022-03-21 00:11:57,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:11:57,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:11:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:57,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:11:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:58,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:11:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:58,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:11:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:58,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:11:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:58,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:11:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:58,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:11:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:58,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:11:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:58,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:11:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:58,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:11:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:58,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:11:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:58,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-21 00:11:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:58,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:11:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:58,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:11:58,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:11:58,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16176601] [2022-03-21 00:11:58,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16176601] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:11:58,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653859778] [2022-03-21 00:11:58,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:11:58,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:11:58,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:11:58,220 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) [2022-03-21 00:11:58,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-21 00:12:00,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:12:00,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:12:00,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:12:00,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:12:00,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:12:00,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:12:00,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653859778] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:00,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:12:00,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-21 00:12:00,549 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:12:00,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [844015327] [2022-03-21 00:12:00,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [844015327] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:00,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:12:00,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:12:00,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965495727] [2022-03-21 00:12:00,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:12:00,549 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:12:00,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:00,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:12:00,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-21 00:12:00,550 INFO L87 Difference]: Start difference. First operand 3785 states and 5303 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) [2022-03-21 00:12:10,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:12:10,108 INFO L93 Difference]: Finished difference Result 6518 states and 9239 transitions. [2022-03-21 00:12:10,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-21 00:12:10,109 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 [2022-03-21 00:12:10,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:12:10,127 INFO L225 Difference]: With dead ends: 6518 [2022-03-21 00:12:10,127 INFO L226 Difference]: Without dead ends: 6497 [2022-03-21 00:12:10,130 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-21 00:12:10,130 INFO L913 BasicCegarLoop]: 2891 mSDtfsCounter, 2416 mSDsluCounter, 26049 mSDsCounter, 0 mSdLazyCounter, 9807 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2417 SdHoareTripleChecker+Valid, 28940 SdHoareTripleChecker+Invalid, 9830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 9807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:12:10,131 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2417 Valid, 28940 Invalid, 9830 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 9807 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-03-21 00:12:10,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6497 states. [2022-03-21 00:12:12,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6497 to 3785. [2022-03-21 00:12:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3785 states, 2566 states have (on average 1.332813717848792) internal successors, (3420), 2639 states have internal predecessors, (3420), 933 states have call successors, (933), 270 states have call predecessors, (933), 285 states have return successors, (949), 917 states have call predecessors, (949), 926 states have call successors, (949) [2022-03-21 00:12:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3785 states to 3785 states and 5302 transitions. [2022-03-21 00:12:12,488 INFO L78 Accepts]: Start accepts. Automaton has 3785 states and 5302 transitions. Word has length 103 [2022-03-21 00:12:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:12:12,488 INFO L478 AbstractCegarLoop]: Abstraction has 3785 states and 5302 transitions. [2022-03-21 00:12:12,488 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) [2022-03-21 00:12:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3785 states and 5302 transitions. [2022-03-21 00:12:12,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-21 00:12:12,490 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:12:12,490 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:12:12,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-21 00:12:12,690 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:12:12,691 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:12:12,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:12:12,691 INFO L85 PathProgramCache]: Analyzing trace with hash 2068306364, now seen corresponding path program 1 times [2022-03-21 00:12:12,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:12,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [825421626] [2022-03-21 00:12:12,693 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:12:12,693 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:12:12,693 INFO L85 PathProgramCache]: Analyzing trace with hash 2068306364, now seen corresponding path program 2 times [2022-03-21 00:12:12,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:12:12,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627487866] [2022-03-21 00:12:12,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:12:12,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:12:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:12,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:12:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:12,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:12:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:12,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:12:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:12,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:12:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:12:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:13,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:12:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:13,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-21 00:12:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:12:13,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:12:13,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627487866] [2022-03-21 00:12:13,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627487866] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:12:13,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926963354] [2022-03-21 00:12:13,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:12:13,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:12:13,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:12:13,062 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) [2022-03-21 00:12:13,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-21 00:12:14,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:12:14,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:12:14,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-21 00:12:14,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:12:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:12:15,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:12:15,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926963354] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:15,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:12:15,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-21 00:12:15,031 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:12:15,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [825421626] [2022-03-21 00:12:15,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [825421626] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:15,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:12:15,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-21 00:12:15,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853008799] [2022-03-21 00:12:15,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:12:15,031 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-21 00:12:15,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:15,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-21 00:12:15,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-03-21 00:12:15,032 INFO L87 Difference]: Start difference. First operand 3785 states and 5302 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) [2022-03-21 00:12:17,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:12:17,370 INFO L93 Difference]: Finished difference Result 3844 states and 5371 transitions. [2022-03-21 00:12:17,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-21 00:12:17,371 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 [2022-03-21 00:12:17,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:12:17,379 INFO L225 Difference]: With dead ends: 3844 [2022-03-21 00:12:17,380 INFO L226 Difference]: Without dead ends: 3799 [2022-03-21 00:12:17,381 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:12:17,381 INFO L913 BasicCegarLoop]: 2471 mSDtfsCounter, 33 mSDsluCounter, 9828 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-03-21 00:12:17,381 INFO L914 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] [2022-03-21 00:12:17,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3799 states. [2022-03-21 00:12:19,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3799 to 3784. [2022-03-21 00:12:19,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 2565 states have (on average 1.332943469785575) internal successors, (3419), 2638 states have internal predecessors, (3419), 933 states have call successors, (933), 270 states have call predecessors, (933), 285 states have return successors, (949), 917 states have call predecessors, (949), 926 states have call successors, (949) [2022-03-21 00:12:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5301 transitions. [2022-03-21 00:12:19,613 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5301 transitions. Word has length 93 [2022-03-21 00:12:19,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:12:19,613 INFO L478 AbstractCegarLoop]: Abstraction has 3784 states and 5301 transitions. [2022-03-21 00:12:19,614 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) [2022-03-21 00:12:19,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5301 transitions. [2022-03-21 00:12:19,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-03-21 00:12:19,615 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:12:19,615 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:12:19,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-03-21 00:12:19,816 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:12:19,816 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:12:19,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:12:19,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1331744699, now seen corresponding path program 1 times [2022-03-21 00:12:19,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:19,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1225082661] [2022-03-21 00:12:19,818 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:12:19,818 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:12:19,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1331744699, now seen corresponding path program 2 times [2022-03-21 00:12:19,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:12:19,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188709698] [2022-03-21 00:12:19,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:12:19,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:12:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:12:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:12:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:12:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:12:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:12:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:12:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:12:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-21 00:12:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:12:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-21 00:12:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:12:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:12:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:12:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:12:20,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:12:20,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188709698] [2022-03-21 00:12:20,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188709698] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:12:20,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972340878] [2022-03-21 00:12:20,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:12:20,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:12:20,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:12:20,286 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) [2022-03-21 00:12:20,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-21 00:12:22,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:12:22,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:12:22,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 2024 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:12:22,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:12:22,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:12:22,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:12:22,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972340878] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:22,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:12:22,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-21 00:12:22,618 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:12:22,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1225082661] [2022-03-21 00:12:22,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1225082661] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:22,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:12:22,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:12:22,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653230064] [2022-03-21 00:12:22,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:12:22,619 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:12:22,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:22,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:12:22,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-21 00:12:22,619 INFO L87 Difference]: Start difference. First operand 3784 states and 5301 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) [2022-03-21 00:12:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:12:31,285 INFO L93 Difference]: Finished difference Result 6525 states and 9246 transitions. [2022-03-21 00:12:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-21 00:12:31,286 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 [2022-03-21 00:12:31,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:12:31,303 INFO L225 Difference]: With dead ends: 6525 [2022-03-21 00:12:31,303 INFO L226 Difference]: Without dead ends: 6504 [2022-03-21 00:12:31,306 INFO L912 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 [2022-03-21 00:12:31,307 INFO L913 BasicCegarLoop]: 4327 mSDtfsCounter, 1902 mSDsluCounter, 30545 mSDsCounter, 0 mSdLazyCounter, 9056 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 34872 SdHoareTripleChecker+Invalid, 9076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 9056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:12:31,307 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1903 Valid, 34872 Invalid, 9076 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 9056 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-03-21 00:12:31,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6504 states. [2022-03-21 00:12:33,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6504 to 3802. [2022-03-21 00:12:33,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3802 states, 2577 states have (on average 1.3313930927435003) internal successors, (3431), 2651 states have internal predecessors, (3431), 935 states have call successors, (935), 272 states have call predecessors, (935), 289 states have return successors, (960), 920 states have call predecessors, (960), 928 states have call successors, (960) [2022-03-21 00:12:33,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3802 states to 3802 states and 5326 transitions. [2022-03-21 00:12:33,728 INFO L78 Accepts]: Start accepts. Automaton has 3802 states and 5326 transitions. Word has length 113 [2022-03-21 00:12:33,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:12:33,728 INFO L478 AbstractCegarLoop]: Abstraction has 3802 states and 5326 transitions. [2022-03-21 00:12:33,728 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) [2022-03-21 00:12:33,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3802 states and 5326 transitions. [2022-03-21 00:12:33,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-21 00:12:33,730 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:12:33,730 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:12:33,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-03-21 00:12:33,930 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,SelfDestructingSolverStorable74 [2022-03-21 00:12:33,930 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:12:33,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:12:33,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1429858466, now seen corresponding path program 1 times [2022-03-21 00:12:33,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:33,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1225996368] [2022-03-21 00:12:33,933 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:12:33,933 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:12:33,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1429858466, now seen corresponding path program 2 times [2022-03-21 00:12:33,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:12:33,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102118865] [2022-03-21 00:12:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:12:33,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:12:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:34,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:12:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:34,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:12:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:34,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:12:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:34,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:12:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:34,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:12:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:34,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:12:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:34,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:12:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:34,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-21 00:12:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:34,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:12:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:34,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:12:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:34,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:12:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:34,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:12:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:34,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:12:34,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:12:34,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102118865] [2022-03-21 00:12:34,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102118865] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:12:34,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131805699] [2022-03-21 00:12:34,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:12:34,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:12:34,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:12:34,385 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) [2022-03-21 00:12:34,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-21 00:12:36,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:12:36,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:12:36,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 1959 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:12:36,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:12:36,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:12:36,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:12:36,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131805699] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:36,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:12:36,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2022-03-21 00:12:36,794 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:12:36,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1225996368] [2022-03-21 00:12:36,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1225996368] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:36,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:12:36,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:12:36,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618392983] [2022-03-21 00:12:36,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:12:36,795 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:12:36,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:36,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:12:36,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-03-21 00:12:36,795 INFO L87 Difference]: Start difference. First operand 3802 states and 5326 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) [2022-03-21 00:12:45,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:12:45,487 INFO L93 Difference]: Finished difference Result 6521 states and 9241 transitions. [2022-03-21 00:12:45,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-21 00:12:45,487 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 [2022-03-21 00:12:45,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:12:45,503 INFO L225 Difference]: With dead ends: 6521 [2022-03-21 00:12:45,503 INFO L226 Difference]: Without dead ends: 6503 [2022-03-21 00:12:45,506 INFO L912 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 [2022-03-21 00:12:45,506 INFO L913 BasicCegarLoop]: 4324 mSDtfsCounter, 1898 mSDsluCounter, 36523 mSDsCounter, 0 mSdLazyCounter, 8335 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 40847 SdHoareTripleChecker+Invalid, 8355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 8335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:12:45,506 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1899 Valid, 40847 Invalid, 8355 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 8335 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-03-21 00:12:45,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6503 states. [2022-03-21 00:12:47,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6503 to 3805. [2022-03-21 00:12:47,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3805 states, 2579 states have (on average 1.3311360992632804) internal successors, (3433), 2653 states have internal predecessors, (3433), 935 states have call successors, (935), 272 states have call predecessors, (935), 290 states have return successors, (961), 921 states have call predecessors, (961), 928 states have call successors, (961) [2022-03-21 00:12:47,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3805 states to 3805 states and 5329 transitions. [2022-03-21 00:12:47,928 INFO L78 Accepts]: Start accepts. Automaton has 3805 states and 5329 transitions. Word has length 97 [2022-03-21 00:12:47,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:12:47,928 INFO L478 AbstractCegarLoop]: Abstraction has 3805 states and 5329 transitions. [2022-03-21 00:12:47,928 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) [2022-03-21 00:12:47,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3805 states and 5329 transitions. [2022-03-21 00:12:47,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-21 00:12:47,930 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:12:47,930 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:12:47,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-03-21 00:12:48,130 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:12:48,130 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:12:48,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:12:48,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1911858775, now seen corresponding path program 1 times [2022-03-21 00:12:48,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:48,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1964207273] [2022-03-21 00:12:48,133 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:12:48,133 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:12:48,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1911858775, now seen corresponding path program 2 times [2022-03-21 00:12:48,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:12:48,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4256817] [2022-03-21 00:12:48,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:12:48,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:12:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:48,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:12:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:48,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:12:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:48,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:12:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:48,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:12:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:48,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:12:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:48,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:12:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:48,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:12:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:48,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:12:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:48,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:12:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:48,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:12:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:48,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:12:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:48,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:12:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:48,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:12:48,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:12:48,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4256817] [2022-03-21 00:12:48,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4256817] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:12:48,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650634961] [2022-03-21 00:12:48,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:12:48,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:12:48,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:12:48,565 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) [2022-03-21 00:12:48,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-21 00:12:50,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:12:50,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:12:50,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 1979 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:12:50,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:12:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:12:50,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:12:50,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650634961] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:50,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:12:50,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-21 00:12:50,968 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:12:50,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1964207273] [2022-03-21 00:12:50,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1964207273] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:50,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:12:50,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:12:50,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232207060] [2022-03-21 00:12:50,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:12:50,968 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:12:50,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:50,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:12:50,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-21 00:12:50,969 INFO L87 Difference]: Start difference. First operand 3805 states and 5329 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) [2022-03-21 00:12:59,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:12:59,566 INFO L93 Difference]: Finished difference Result 6520 states and 9239 transitions. [2022-03-21 00:12:59,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-21 00:12:59,567 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 [2022-03-21 00:12:59,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:12:59,585 INFO L225 Difference]: With dead ends: 6520 [2022-03-21 00:12:59,585 INFO L226 Difference]: Without dead ends: 6499 [2022-03-21 00:12:59,589 INFO L912 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 [2022-03-21 00:12:59,589 INFO L913 BasicCegarLoop]: 4049 mSDtfsCounter, 1898 mSDsluCounter, 25830 mSDsCounter, 0 mSdLazyCounter, 8267 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 29879 SdHoareTripleChecker+Invalid, 8286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 8267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-03-21 00:12:59,589 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1899 Valid, 29879 Invalid, 8286 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 8267 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-03-21 00:12:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6499 states. [2022-03-21 00:13:02,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6499 to 3805. [2022-03-21 00:13:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3805 states, 2579 states have (on average 1.3311360992632804) internal successors, (3433), 2653 states have internal predecessors, (3433), 935 states have call successors, (935), 272 states have call predecessors, (935), 290 states have return successors, (960), 921 states have call predecessors, (960), 928 states have call successors, (960) [2022-03-21 00:13:02,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3805 states to 3805 states and 5328 transitions. [2022-03-21 00:13:02,123 INFO L78 Accepts]: Start accepts. Automaton has 3805 states and 5328 transitions. Word has length 103 [2022-03-21 00:13:02,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:13:02,124 INFO L478 AbstractCegarLoop]: Abstraction has 3805 states and 5328 transitions. [2022-03-21 00:13:02,124 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) [2022-03-21 00:13:02,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3805 states and 5328 transitions. [2022-03-21 00:13:02,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-21 00:13:02,125 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:13:02,125 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:13:02,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-03-21 00:13:02,326 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:13:02,326 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:13:02,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:13:02,326 INFO L85 PathProgramCache]: Analyzing trace with hash 492684880, now seen corresponding path program 1 times [2022-03-21 00:13:02,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:13:02,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [150083682] [2022-03-21 00:13:02,328 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:13:02,328 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:13:02,329 INFO L85 PathProgramCache]: Analyzing trace with hash 492684880, now seen corresponding path program 2 times [2022-03-21 00:13:02,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:13:02,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040294465] [2022-03-21 00:13:02,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:13:02,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:13:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:02,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:13:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:02,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:13:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:02,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:13:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:02,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:13:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:02,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:13:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:02,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:13:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:02,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:13:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:02,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-21 00:13:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:02,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:13:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:02,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:13:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:02,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:13:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:02,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:13:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:13:02,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:13:02,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040294465] [2022-03-21 00:13:02,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040294465] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:13:02,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295670217] [2022-03-21 00:13:02,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:13:02,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:13:02,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:13:02,805 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) [2022-03-21 00:13:02,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-21 00:13:04,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:13:04,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:13:04,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1957 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:13:04,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:13:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:13:05,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:13:05,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295670217] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:13:05,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:13:05,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2022-03-21 00:13:05,208 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:13:05,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [150083682] [2022-03-21 00:13:05,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [150083682] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:13:05,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:13:05,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:13:05,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069011580] [2022-03-21 00:13:05,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:13:05,208 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:13:05,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:13:05,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:13:05,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-03-21 00:13:05,209 INFO L87 Difference]: Start difference. First operand 3805 states and 5328 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) [2022-03-21 00:13:13,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:13:13,809 INFO L93 Difference]: Finished difference Result 6516 states and 9234 transitions. [2022-03-21 00:13:13,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-21 00:13:13,809 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 [2022-03-21 00:13:13,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:13:13,824 INFO L225 Difference]: With dead ends: 6516 [2022-03-21 00:13:13,824 INFO L226 Difference]: Without dead ends: 6495 [2022-03-21 00:13:13,826 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-21 00:13:13,827 INFO L913 BasicCegarLoop]: 4310 mSDtfsCounter, 1905 mSDsluCounter, 26777 mSDsCounter, 0 mSdLazyCounter, 8228 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1906 SdHoareTripleChecker+Valid, 31087 SdHoareTripleChecker+Invalid, 8249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 8228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-03-21 00:13:13,827 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1906 Valid, 31087 Invalid, 8249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 8228 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-03-21 00:13:13,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6495 states. [2022-03-21 00:13:16,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6495 to 3802. [2022-03-21 00:13:16,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3802 states, 2577 states have (on average 1.3313930927435003) internal successors, (3431), 2651 states have internal predecessors, (3431), 935 states have call successors, (935), 272 states have call predecessors, (935), 289 states have return successors, (958), 920 states have call predecessors, (958), 928 states have call successors, (958) [2022-03-21 00:13:16,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3802 states to 3802 states and 5324 transitions. [2022-03-21 00:13:16,294 INFO L78 Accepts]: Start accepts. Automaton has 3802 states and 5324 transitions. Word has length 96 [2022-03-21 00:13:16,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:13:16,295 INFO L478 AbstractCegarLoop]: Abstraction has 3802 states and 5324 transitions. [2022-03-21 00:13:16,295 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) [2022-03-21 00:13:16,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3802 states and 5324 transitions. [2022-03-21 00:13:16,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-21 00:13:16,296 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:13:16,296 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:13:16,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-21 00:13:16,497 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,SelfDestructingSolverStorable77 [2022-03-21 00:13:16,497 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:13:16,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:13:16,497 INFO L85 PathProgramCache]: Analyzing trace with hash 863893830, now seen corresponding path program 1 times [2022-03-21 00:13:16,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:13:16,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1541933721] [2022-03-21 00:13:16,499 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:13:16,499 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:13:16,499 INFO L85 PathProgramCache]: Analyzing trace with hash 863893830, now seen corresponding path program 2 times [2022-03-21 00:13:16,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:13:16,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006350323] [2022-03-21 00:13:16,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:13:16,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:13:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:16,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:13:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:16,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:13:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:16,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:13:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:16,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:13:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:16,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:13:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:16,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:13:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:16,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:13:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:16,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:13:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:16,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:13:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:16,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:13:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:16,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:13:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:17,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:13:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:13:17,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:13:17,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006350323] [2022-03-21 00:13:17,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006350323] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:13:17,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453757227] [2022-03-21 00:13:17,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:13:17,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:13:17,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:13:17,007 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) [2022-03-21 00:13:17,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-21 00:13:19,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:13:19,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:13:19,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:13:19,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:13:19,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:13:19,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:13:19,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453757227] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:13:19,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:13:19,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-21 00:13:19,481 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:13:19,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1541933721] [2022-03-21 00:13:19,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1541933721] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:13:19,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:13:19,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:13:19,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729893282] [2022-03-21 00:13:19,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:13:19,481 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:13:19,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:13:19,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:13:19,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-21 00:13:19,482 INFO L87 Difference]: Start difference. First operand 3802 states and 5324 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) [2022-03-21 00:13:28,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:13:28,288 INFO L93 Difference]: Finished difference Result 6512 states and 9229 transitions. [2022-03-21 00:13:28,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-21 00:13:28,289 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 [2022-03-21 00:13:28,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:13:28,319 INFO L225 Difference]: With dead ends: 6512 [2022-03-21 00:13:28,335 INFO L226 Difference]: Without dead ends: 6491 [2022-03-21 00:13:28,338 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-21 00:13:28,338 INFO L913 BasicCegarLoop]: 4125 mSDtfsCounter, 1892 mSDsluCounter, 32727 mSDsCounter, 0 mSdLazyCounter, 8269 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1893 SdHoareTripleChecker+Valid, 36852 SdHoareTripleChecker+Invalid, 8286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 8269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-03-21 00:13:28,338 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1893 Valid, 36852 Invalid, 8286 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 8269 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-03-21 00:13:28,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6491 states. [2022-03-21 00:13:30,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6491 to 3802. [2022-03-21 00:13:30,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3802 states, 2577 states have (on average 1.3313930927435003) internal successors, (3431), 2651 states have internal predecessors, (3431), 935 states have call successors, (935), 272 states have call predecessors, (935), 289 states have return successors, (957), 920 states have call predecessors, (957), 928 states have call successors, (957) [2022-03-21 00:13:30,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3802 states to 3802 states and 5323 transitions. [2022-03-21 00:13:30,924 INFO L78 Accepts]: Start accepts. Automaton has 3802 states and 5323 transitions. Word has length 104 [2022-03-21 00:13:30,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:13:30,924 INFO L478 AbstractCegarLoop]: Abstraction has 3802 states and 5323 transitions. [2022-03-21 00:13:30,924 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) [2022-03-21 00:13:30,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3802 states and 5323 transitions. [2022-03-21 00:13:30,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-21 00:13:30,926 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:13:30,926 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:13:30,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-03-21 00:13:31,126 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,SelfDestructingSolverStorable78 [2022-03-21 00:13:31,127 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:13:31,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:13:31,127 INFO L85 PathProgramCache]: Analyzing trace with hash 786695782, now seen corresponding path program 1 times [2022-03-21 00:13:31,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:13:31,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [701405384] [2022-03-21 00:13:31,129 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:13:31,129 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:13:31,129 INFO L85 PathProgramCache]: Analyzing trace with hash 786695782, now seen corresponding path program 2 times [2022-03-21 00:13:31,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:13:31,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734411835] [2022-03-21 00:13:31,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:13:31,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:13:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:31,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:13:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:13:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:31,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:13:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:31,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:13:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:13:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:31,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:13:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:31,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:13:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:31,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:13:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:31,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:13:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:31,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:13:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:31,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:13:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:31,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:13:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:13:31,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:13:31,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734411835] [2022-03-21 00:13:31,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734411835] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:13:31,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613514597] [2022-03-21 00:13:31,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:13:31,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:13:31,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:13:31,633 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) [2022-03-21 00:13:31,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-21 00:13:33,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:13:33,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:13:33,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 1998 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:13:33,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:13:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:13:34,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:13:34,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613514597] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:13:34,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:13:34,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-21 00:13:34,068 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:13:34,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [701405384] [2022-03-21 00:13:34,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [701405384] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:13:34,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:13:34,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:13:34,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778080336] [2022-03-21 00:13:34,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:13:34,069 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:13:34,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:13:34,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:13:34,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-21 00:13:34,069 INFO L87 Difference]: Start difference. First operand 3802 states and 5323 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) [2022-03-21 00:13:42,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:13:42,943 INFO L93 Difference]: Finished difference Result 6508 states and 9224 transitions. [2022-03-21 00:13:42,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-21 00:13:42,943 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 [2022-03-21 00:13:42,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:13:42,960 INFO L225 Difference]: With dead ends: 6508 [2022-03-21 00:13:42,960 INFO L226 Difference]: Without dead ends: 6487 [2022-03-21 00:13:42,963 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-21 00:13:42,963 INFO L913 BasicCegarLoop]: 4245 mSDtfsCounter, 1888 mSDsluCounter, 19556 mSDsCounter, 0 mSdLazyCounter, 8158 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 23801 SdHoareTripleChecker+Invalid, 8174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 8158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:13:42,963 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1889 Valid, 23801 Invalid, 8174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 8158 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-03-21 00:13:42,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6487 states. [2022-03-21 00:13:45,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6487 to 3802. [2022-03-21 00:13:45,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3802 states, 2577 states have (on average 1.3313930927435003) internal successors, (3431), 2651 states have internal predecessors, (3431), 935 states have call successors, (935), 272 states have call predecessors, (935), 289 states have return successors, (956), 920 states have call predecessors, (956), 928 states have call successors, (956) [2022-03-21 00:13:45,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3802 states to 3802 states and 5322 transitions. [2022-03-21 00:13:45,577 INFO L78 Accepts]: Start accepts. Automaton has 3802 states and 5322 transitions. Word has length 104 [2022-03-21 00:13:45,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:13:45,578 INFO L478 AbstractCegarLoop]: Abstraction has 3802 states and 5322 transitions. [2022-03-21 00:13:45,578 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) [2022-03-21 00:13:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3802 states and 5322 transitions. [2022-03-21 00:13:45,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-21 00:13:45,579 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:13:45,580 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:13:45,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-03-21 00:13:45,780 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:13:45,780 INFO L403 AbstractCegarLoop]: === Iteration 81 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:13:45,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:13:45,780 INFO L85 PathProgramCache]: Analyzing trace with hash -32586170, now seen corresponding path program 1 times [2022-03-21 00:13:45,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:13:45,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2136962618] [2022-03-21 00:13:45,782 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:13:45,783 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:13:45,783 INFO L85 PathProgramCache]: Analyzing trace with hash -32586170, now seen corresponding path program 2 times [2022-03-21 00:13:45,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:13:45,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838972983] [2022-03-21 00:13:45,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:13:45,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:13:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:46,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:13:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:46,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:13:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:46,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:13:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:46,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:13:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:46,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:13:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:46,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:13:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:46,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:13:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:46,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-21 00:13:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:46,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:13:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:46,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:13:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:13:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:46,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:13:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:46,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:13:46,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:13:46,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838972983] [2022-03-21 00:13:46,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838972983] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:13:46,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861002503] [2022-03-21 00:13:46,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:13:46,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:13:46,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:13:46,272 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) [2022-03-21 00:13:46,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-21 00:13:48,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:13:48,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:13:48,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 2000 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:13:48,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:13:48,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:13:48,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:13:48,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861002503] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:13:48,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:13:48,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-21 00:13:48,812 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:13:48,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2136962618] [2022-03-21 00:13:48,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2136962618] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:13:48,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:13:48,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:13:48,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336646171] [2022-03-21 00:13:48,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:13:48,813 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:13:48,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:13:48,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:13:48,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-21 00:13:48,825 INFO L87 Difference]: Start difference. First operand 3802 states and 5322 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) [2022-03-21 00:13:58,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:13:58,302 INFO L93 Difference]: Finished difference Result 6504 states and 9219 transitions. [2022-03-21 00:13:58,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-21 00:13:58,302 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 [2022-03-21 00:13:58,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:13:58,320 INFO L225 Difference]: With dead ends: 6504 [2022-03-21 00:13:58,321 INFO L226 Difference]: Without dead ends: 6483 [2022-03-21 00:13:58,324 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-21 00:13:58,324 INFO L913 BasicCegarLoop]: 4330 mSDtfsCounter, 1878 mSDsluCounter, 25627 mSDsCounter, 0 mSdLazyCounter, 8897 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 29957 SdHoareTripleChecker+Invalid, 8910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 8897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-03-21 00:13:58,324 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1879 Valid, 29957 Invalid, 8910 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 8897 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-03-21 00:13:58,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6483 states. [2022-03-21 00:14:00,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6483 to 3802. [2022-03-21 00:14:00,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3802 states, 2577 states have (on average 1.3313930927435003) internal successors, (3431), 2651 states have internal predecessors, (3431), 935 states have call successors, (935), 272 states have call predecessors, (935), 289 states have return successors, (955), 920 states have call predecessors, (955), 928 states have call successors, (955) [2022-03-21 00:14:00,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3802 states to 3802 states and 5321 transitions. [2022-03-21 00:14:00,976 INFO L78 Accepts]: Start accepts. Automaton has 3802 states and 5321 transitions. Word has length 107 [2022-03-21 00:14:00,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:14:00,976 INFO L478 AbstractCegarLoop]: Abstraction has 3802 states and 5321 transitions. [2022-03-21 00:14:00,976 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) [2022-03-21 00:14:00,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3802 states and 5321 transitions. [2022-03-21 00:14:00,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-21 00:14:00,978 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:14:00,978 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:14:01,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-21 00:14:01,178 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:14:01,178 INFO L403 AbstractCegarLoop]: === Iteration 82 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:14:01,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:14:01,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1244564533, now seen corresponding path program 1 times [2022-03-21 00:14:01,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:14:01,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1323598638] [2022-03-21 00:14:01,181 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:14:01,181 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:14:01,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1244564533, now seen corresponding path program 2 times [2022-03-21 00:14:01,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:14:01,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775437780] [2022-03-21 00:14:01,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:14:01,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:14:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:01,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:14:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:01,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:14:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:01,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:14:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:01,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:14:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:01,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:14:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:01,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:14:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:01,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:14:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:01,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:14:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:01,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:14:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:01,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:14:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:01,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:14:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:01,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:14:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:01,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:14:01,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:14:01,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775437780] [2022-03-21 00:14:01,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775437780] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:14:01,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760654995] [2022-03-21 00:14:01,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:14:01,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:14:01,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:14:01,666 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) [2022-03-21 00:14:01,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-21 00:14:03,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:14:03,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:14:03,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 2005 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:14:03,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:14:04,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:14:04,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:14:04,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760654995] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:14:04,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:14:04,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-21 00:14:04,158 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:14:04,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1323598638] [2022-03-21 00:14:04,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1323598638] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:14:04,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:14:04,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:14:04,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178281954] [2022-03-21 00:14:04,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:14:04,158 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:14:04,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:14:04,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:14:04,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-21 00:14:04,159 INFO L87 Difference]: Start difference. First operand 3802 states and 5321 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) [2022-03-21 00:14:13,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:14:13,202 INFO L93 Difference]: Finished difference Result 6500 states and 9214 transitions. [2022-03-21 00:14:13,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-21 00:14:13,203 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 [2022-03-21 00:14:13,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:14:13,217 INFO L225 Difference]: With dead ends: 6500 [2022-03-21 00:14:13,217 INFO L226 Difference]: Without dead ends: 6479 [2022-03-21 00:14:13,219 INFO L912 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 [2022-03-21 00:14:13,220 INFO L913 BasicCegarLoop]: 4233 mSDtfsCounter, 1887 mSDsluCounter, 35787 mSDsCounter, 0 mSdLazyCounter, 8197 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 40020 SdHoareTripleChecker+Invalid, 8214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 8197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:14:13,220 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1888 Valid, 40020 Invalid, 8214 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 8197 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-03-21 00:14:13,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6479 states. [2022-03-21 00:14:15,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6479 to 3802. [2022-03-21 00:14:15,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3802 states, 2577 states have (on average 1.3313930927435003) internal successors, (3431), 2651 states have internal predecessors, (3431), 935 states have call successors, (935), 272 states have call predecessors, (935), 289 states have return successors, (954), 920 states have call predecessors, (954), 928 states have call successors, (954) [2022-03-21 00:14:15,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3802 states to 3802 states and 5320 transitions. [2022-03-21 00:14:15,903 INFO L78 Accepts]: Start accepts. Automaton has 3802 states and 5320 transitions. Word has length 103 [2022-03-21 00:14:15,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:14:15,903 INFO L478 AbstractCegarLoop]: Abstraction has 3802 states and 5320 transitions. [2022-03-21 00:14:15,903 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) [2022-03-21 00:14:15,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3802 states and 5320 transitions. [2022-03-21 00:14:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-21 00:14:15,905 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:14:15,905 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:14:15,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-03-21 00:14:16,107 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2022-03-21 00:14:16,107 INFO L403 AbstractCegarLoop]: === Iteration 83 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:14:16,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:14:16,108 INFO L85 PathProgramCache]: Analyzing trace with hash -962867689, now seen corresponding path program 1 times [2022-03-21 00:14:16,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:14:16,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [863165999] [2022-03-21 00:14:16,110 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:14:16,110 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:14:16,110 INFO L85 PathProgramCache]: Analyzing trace with hash -962867689, now seen corresponding path program 2 times [2022-03-21 00:14:16,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:14:16,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413960848] [2022-03-21 00:14:16,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:14:16,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:14:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:16,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:14:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:16,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:14:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:16,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:14:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:16,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:14:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:16,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:14:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:16,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:14:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:16,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:14:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:16,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:14:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:16,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:14:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:16,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:14:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:16,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:14:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:16,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:14:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:14:16,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:14:16,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413960848] [2022-03-21 00:14:16,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413960848] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:14:16,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055413386] [2022-03-21 00:14:16,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:14:16,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:14:16,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:14:16,571 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) [2022-03-21 00:14:16,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-21 00:14:18,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:14:18,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:14:18,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 1978 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:14:18,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:14:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:14:19,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:14:19,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055413386] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:14:19,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:14:19,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-21 00:14:19,107 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:14:19,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [863165999] [2022-03-21 00:14:19,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [863165999] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:14:19,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:14:19,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:14:19,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586712771] [2022-03-21 00:14:19,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:14:19,108 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:14:19,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:14:19,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:14:19,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-21 00:14:19,109 INFO L87 Difference]: Start difference. First operand 3802 states and 5320 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) [2022-03-21 00:14:29,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:14:29,091 INFO L93 Difference]: Finished difference Result 6527 states and 9240 transitions. [2022-03-21 00:14:29,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-21 00:14:29,091 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 [2022-03-21 00:14:29,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:14:29,111 INFO L225 Difference]: With dead ends: 6527 [2022-03-21 00:14:29,111 INFO L226 Difference]: Without dead ends: 6463 [2022-03-21 00:14:29,114 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-21 00:14:29,115 INFO L913 BasicCegarLoop]: 4036 mSDtfsCounter, 1910 mSDsluCounter, 39558 mSDsCounter, 0 mSdLazyCounter, 9185 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 43594 SdHoareTripleChecker+Invalid, 9206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 9185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-03-21 00:14:29,115 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1911 Valid, 43594 Invalid, 9206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 9185 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-03-21 00:14:29,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6463 states. [2022-03-21 00:14:31,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6463 to 3775. [2022-03-21 00:14:31,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 2555 states have (on average 1.3283757338551858) internal successors, (3394), 2631 states have internal predecessors, (3394), 931 states have call successors, (931), 269 states have call predecessors, (931), 288 states have return successors, (952), 916 states have call predecessors, (952), 924 states have call successors, (952) [2022-03-21 00:14:31,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5277 transitions. [2022-03-21 00:14:31,842 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5277 transitions. Word has length 103 [2022-03-21 00:14:31,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:14:31,842 INFO L478 AbstractCegarLoop]: Abstraction has 3775 states and 5277 transitions. [2022-03-21 00:14:31,842 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) [2022-03-21 00:14:31,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5277 transitions. [2022-03-21 00:14:31,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-21 00:14:31,844 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:14:31,844 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:14:31,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-03-21 00:14:32,044 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:14:32,045 INFO L403 AbstractCegarLoop]: === Iteration 84 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:14:32,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:14:32,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2010832634, now seen corresponding path program 1 times [2022-03-21 00:14:32,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:14:32,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [196356787] [2022-03-21 00:14:32,055 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:14:32,056 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:14:32,056 INFO L85 PathProgramCache]: Analyzing trace with hash -2010832634, now seen corresponding path program 2 times [2022-03-21 00:14:32,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:14:32,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376184912] [2022-03-21 00:14:32,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:14:32,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:14:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:32,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:14:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:32,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:14:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:32,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:14:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:32,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-21 00:14:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:32,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:14:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:32,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:14:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:32,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:14:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:32,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-21 00:14:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:32,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:14:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:32,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:14:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:32,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:14:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:32,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:14:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:14:32,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:14:32,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:14:32,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376184912] [2022-03-21 00:14:32,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376184912] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:14:32,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437211018] [2022-03-21 00:14:32,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:14:32,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:14:32,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:14:32,555 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) [2022-03-21 00:14:32,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-21 00:14:34,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:14:34,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:14:34,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:14:34,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:14:35,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:14:35,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:14:35,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437211018] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:14:35,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:14:35,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-21 00:14:35,233 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:14:35,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [196356787] [2022-03-21 00:14:35,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [196356787] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:14:35,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:14:35,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:14:35,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965465093] [2022-03-21 00:14:35,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:14:35,234 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:14:35,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:14:35,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:14:35,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-21 00:14:35,234 INFO L87 Difference]: Start difference. First operand 3775 states and 5277 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) [2022-03-21 00:14:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:14:45,747 INFO L93 Difference]: Finished difference Result 6480 states and 9174 transitions. [2022-03-21 00:14:45,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-21 00:14:45,747 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 [2022-03-21 00:14:45,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:14:45,764 INFO L225 Difference]: With dead ends: 6480 [2022-03-21 00:14:45,765 INFO L226 Difference]: Without dead ends: 6454 [2022-03-21 00:14:45,768 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-21 00:14:45,768 INFO L913 BasicCegarLoop]: 3972 mSDtfsCounter, 1906 mSDsluCounter, 38868 mSDsCounter, 0 mSdLazyCounter, 9161 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1907 SdHoareTripleChecker+Valid, 42840 SdHoareTripleChecker+Invalid, 9181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 9161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:14:45,768 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1907 Valid, 42840 Invalid, 9181 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 9161 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-03-21 00:14:45,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6454 states.