/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 06:58:59,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 06:58:59,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 06:58:59,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-19 06:58:59,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-19 06:58:59,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-19 06:58:59,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-19 06:58:59,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-19 06:58:59,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-19 06:58:59,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-19 06:58:59,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-19 06:58:59,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-19 06:58:59,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 06:58:59,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 06:58:59,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 06:58:59,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 06:58:59,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 06:58:59,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 06:58:59,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 06:58:59,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 06:58:59,606 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 06:58:59,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 06:58:59,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 06:58:59,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 06:58:59,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 06:58:59,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-19 06:58:59,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 06:58:59,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 06:58:59,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 06:58:59,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-19 06:58:59,625 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 06:58:59,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 06:58:59,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 06:58:59,628 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 06:58:59,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 06:58:59,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 06:58:59,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 06:58:59,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 06:58:59,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 06:58:59,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 06:58:59,629 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 06:58:59,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 06:58:59,629 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 06:58:59,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 06:58:59,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 06:58:59,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 06:58:59,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 06:58:59,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 06:58:59,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 06:58:59,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 06:58:59,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 06:58:59,630 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 06:58:59,630 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 06:58:59,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 06:58:59,631 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-19 06:58:59,631 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 06:58:59,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 06:58:59,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 06:58:59,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 06:58:59,853 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 06:58:59,854 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 06:58:59,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c [2022-03-19 06:58:59,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc0b1c11c/1f2211df06c2456e929a6b66a80569f2/FLAGa5e1ab439 [2022-03-19 06:59:00,428 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 06:59:00,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c [2022-03-19 06:59:00,459 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc0b1c11c/1f2211df06c2456e929a6b66a80569f2/FLAGa5e1ab439 [2022-03-19 06:59:00,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc0b1c11c/1f2211df06c2456e929a6b66a80569f2 [2022-03-19 06:59:00,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 06:59:00,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 06:59:00,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 06:59:00,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 06:59:00,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 06:59:00,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 06:59:00" (1/1) ... [2022-03-19 06:59:00,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d20a780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:59:00, skipping insertion in model container [2022-03-19 06:59:00,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 06:59:00" (1/1) ... [2022-03-19 06:59:00,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 06:59:00,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 06:59:01,193 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/kbfiltr.i.cil-2.c[62209,62222] [2022-03-19 06:59:01,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 06:59:01,402 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 06:59:01,471 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/kbfiltr.i.cil-2.c[62209,62222] [2022-03-19 06:59:01,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 06:59:01,597 INFO L208 MainTranslator]: Completed translation [2022-03-19 06:59:01,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:59:01 WrapperNode [2022-03-19 06:59:01,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 06:59:01,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 06:59:01,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 06:59:01,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 06:59:01,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:59:01" (1/1) ... [2022-03-19 06:59:01,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:59:01" (1/1) ... [2022-03-19 06:59:01,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:59:01" (1/1) ... [2022-03-19 06:59:01,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:59:01" (1/1) ... [2022-03-19 06:59:01,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:59:01" (1/1) ... [2022-03-19 06:59:01,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:59:01" (1/1) ... [2022-03-19 06:59:01,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:59:01" (1/1) ... [2022-03-19 06:59:01,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 06:59:01,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 06:59:01,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 06:59:01,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 06:59:01,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:59:01" (1/1) ... [2022-03-19 06:59:01,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 06:59:01,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:59:01,828 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) [2022-03-19 06:59:01,850 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 [2022-03-19 06:59:01,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 06:59:01,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 06:59:01,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PVOID~0~X~$Pointer$~X~$Pointer$~X~~PBOOLEAN~0~TO~~NTSTATUS~0 [2022-03-19 06:59:01,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PKEYBOARD_INPUT_DATA~0~X~~POUTPUT_PACKET~0~X~~UCHAR~0~X~~PUCHAR~0~X~~PBOOLEAN~0~X~~PKEYBOARD_SCAN_STATE~0~TO~~BOOLEAN~0 [2022-03-19 06:59:01,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PVOID~0~X~~PVOID~0~X~~PVOID~0~TO~VOID [2022-03-19 06:59:01,877 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 06:59:01,877 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-19 06:59:01,877 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-03-19 06:59:01,878 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-03-19 06:59:01,878 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_IoCtl [2022-03-19 06:59:01,878 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-19 06:59:01,879 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-19 06:59:01,879 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-03-19 06:59:01,879 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_AddDevice [2022-03-19 06:59:01,879 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-03-19 06:59:01,879 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-03-19 06:59:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-03-19 06:59:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2022-03-19 06:59:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-03-19 06:59:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2022-03-19 06:59:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InitializationRoutine [2022-03-19 06:59:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_IsrHook [2022-03-19 06:59:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_ServiceCallback [2022-03-19 06:59:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Unload [2022-03-19 06:59:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-19 06:59:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 06:59:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-03-19 06:59:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-03-19 06:59:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-03-19 06:59:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-03-19 06:59:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-03-19 06:59:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-03-19 06:59:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-03-19 06:59:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-03-19 06:59:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-03-19 06:59:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-03-19 06:59:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-19 06:59:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-03-19 06:59:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-03-19 06:59:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-03-19 06:59:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-19 06:59:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-03-19 06:59:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-03-19 06:59:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-03-19 06:59:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-03-19 06:59:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-19 06:59:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-19 06:59:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-03-19 06:59:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-19 06:59:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-03-19 06:59:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-19 06:59:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-19 06:59:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-19 06:59:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-03-19 06:59:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-03-19 06:59:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-03-19 06:59:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-03-19 06:59:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-03-19 06:59:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-03-19 06:59:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-03-19 06:59:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-19 06:59:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-19 06:59:01,884 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-03-19 06:59:01,884 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-03-19 06:59:01,884 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-03-19 06:59:01,884 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-03-19 06:59:01,884 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-03-19 06:59:01,884 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-03-19 06:59:01,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-19 06:59:01,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-03-19 06:59:01,885 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-19 06:59:01,885 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-03-19 06:59:01,885 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-19 06:59:01,885 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-03-19 06:59:01,885 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-03-19 06:59:01,885 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-03-19 06:59:01,885 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-03-19 06:59:01,886 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-03-19 06:59:01,886 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-03-19 06:59:01,886 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-03-19 06:59:01,887 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-03-19 06:59:01,887 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-03-19 06:59:01,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-19 06:59:01,887 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-03-19 06:59:01,888 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-03-19 06:59:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 06:59:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 06:59:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 06:59:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 06:59:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-19 06:59:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 06:59:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-19 06:59:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-03-19 06:59:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-19 06:59:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-19 06:59:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-03-19 06:59:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-03-19 06:59:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-03-19 06:59:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-03-19 06:59:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-03-19 06:59:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-03-19 06:59:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-03-19 06:59:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-03-19 06:59:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-03-19 06:59:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-03-19 06:59:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-03-19 06:59:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 06:59:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 06:59:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-03-19 06:59:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-03-19 06:59:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-19 06:59:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-03-19 06:59:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-03-19 06:59:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-03-19 06:59:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-19 06:59:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-03-19 06:59:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-03-19 06:59:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-03-19 06:59:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-03-19 06:59:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-03-19 06:59:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-03-19 06:59:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-03-19 06:59:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-03-19 06:59:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-03-19 06:59:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-03-19 06:59:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-03-19 06:59:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-03-19 06:59:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-03-19 06:59:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-03-19 06:59:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-03-19 06:59:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-19 06:59:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-03-19 06:59:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-03-19 06:59:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-03-19 06:59:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-03-19 06:59:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-19 06:59:01,895 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-19 06:59:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-19 06:59:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-03-19 06:59:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-03-19 06:59:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-03-19 06:59:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-19 06:59:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-03-19 06:59:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-03-19 06:59:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-03-19 06:59:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-03-19 06:59:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-19 06:59:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-03-19 06:59:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-03-19 06:59:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-19 06:59:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-19 06:59:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-19 06:59:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-03-19 06:59:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-19 06:59:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-03-19 06:59:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-19 06:59:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_AddDevice [2022-03-19 06:59:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-03-19 06:59:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-03-19 06:59:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2022-03-19 06:59:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_IoCtl [2022-03-19 06:59:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-03-19 06:59:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2022-03-19 06:59:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InitializationRoutine [2022-03-19 06:59:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_IsrHook [2022-03-19 06:59:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_ServiceCallback [2022-03-19 06:59:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Unload [2022-03-19 06:59:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-03-19 06:59:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-19 06:59:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-19 06:59:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-19 06:59:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-19 06:59:01,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-19 06:59:01,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-19 06:59:01,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 06:59:01,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-03-19 06:59:01,906 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-03-19 06:59:01,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-03-19 06:59:01,906 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PVOID~0~X~$Pointer$~X~$Pointer$~X~~PBOOLEAN~0~TO~~NTSTATUS~0 [2022-03-19 06:59:01,906 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PKEYBOARD_INPUT_DATA~0~X~~POUTPUT_PACKET~0~X~~UCHAR~0~X~~PUCHAR~0~X~~PBOOLEAN~0~X~~PKEYBOARD_SCAN_STATE~0~TO~~BOOLEAN~0 [2022-03-19 06:59:01,906 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PVOID~0~X~~PVOID~0~X~~PVOID~0~TO~VOID [2022-03-19 06:59:01,906 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-19 06:59:01,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2022-03-19 06:59:01,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 06:59:01,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-19 06:59:01,906 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-19 06:59:01,906 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-03-19 06:59:01,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 06:59:01,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 06:59:01,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 06:59:01,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-19 06:59:01,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-19 06:59:01,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-19 06:59:01,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-19 06:59:02,311 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 06:59:02,314 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 06:59:02,343 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:02,381 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:59:02,381 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:59:02,382 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:02,394 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:59:02,394 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:59:02,405 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:02,411 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:59:02,411 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:59:02,411 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:02,421 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:59:02,421 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:59:02,424 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:02,432 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:59:02,432 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:59:02,672 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:02,683 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:59:02,684 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:59:02,684 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:02,696 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:59:02,696 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:59:02,696 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:02,716 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:59:02,716 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:59:02,731 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:02,736 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:59:02,736 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:59:02,736 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:02,741 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:59:02,741 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:59:02,742 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:02,750 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:59:02,750 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:59:02,778 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:02,784 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:59:02,784 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:59:02,784 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:02,789 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:59:02,789 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:59:02,805 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:02,959 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-03-19 06:59:02,959 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-03-19 06:59:02,977 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:03,002 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-19 06:59:03,003 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-19 06:59:03,019 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:03,023 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:59:03,023 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:59:03,028 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:04,181 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-19 06:59:04,181 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-19 06:59:04,330 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:04,334 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:59:04,334 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:59:04,418 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:04,421 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:59:04,422 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:59:04,436 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:04,453 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-19 06:59:04,453 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-19 06:59:04,460 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:04,470 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-19 06:59:04,470 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-19 06:59:04,496 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:04,501 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:59:04,501 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:59:04,503 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:04,532 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-19 06:59:04,533 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-19 06:59:04,540 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:59:04,545 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:59:04,546 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:59:04,571 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 06:59:04,589 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 06:59:04,589 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-19 06:59:04,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:59:04 BoogieIcfgContainer [2022-03-19 06:59:04,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 06:59:04,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 06:59:04,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 06:59:04,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 06:59:04,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 06:59:00" (1/3) ... [2022-03-19 06:59:04,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a046f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 06:59:04, skipping insertion in model container [2022-03-19 06:59:04,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:59:01" (2/3) ... [2022-03-19 06:59:04,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a046f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 06:59:04, skipping insertion in model container [2022-03-19 06:59:04,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:59:04" (3/3) ... [2022-03-19 06:59:04,600 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr.i.cil-2.c [2022-03-19 06:59:04,605 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 06:59:04,605 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 06:59:04,652 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 06:59:04,662 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 [2022-03-19 06:59:04,662 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 06:59:04,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 230 states have (on average 1.5) internal successors, (345), 248 states have internal predecessors, (345), 49 states have call successors, (49), 27 states have call predecessors, (49), 27 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49) [2022-03-19 06:59:04,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-19 06:59:04,693 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:59:04,694 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:59:04,694 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:59:04,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:59:04,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1774662017, now seen corresponding path program 1 times [2022-03-19 06:59:04,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:04,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [213287169] [2022-03-19 06:59:04,714 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:59:04,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1774662017, now seen corresponding path program 2 times [2022-03-19 06:59:04,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:59:04,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248728471] [2022-03-19 06:59:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:59:04,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:59:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:05,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:59:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:05,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:59:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:05,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 06:59:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:05,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:05,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:59:05,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:59:05,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248728471] [2022-03-19 06:59:05,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248728471] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:05,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:05,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 06:59:05,458 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:59:05,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [213287169] [2022-03-19 06:59:05,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [213287169] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:05,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:05,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 06:59:05,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328334271] [2022-03-19 06:59:05,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:59:05,463 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 06:59:05,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:05,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 06:59:05,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-19 06:59:05,487 INFO L87 Difference]: Start difference. First operand has 308 states, 230 states have (on average 1.5) internal successors, (345), 248 states have internal predecessors, (345), 49 states have call successors, (49), 27 states have call predecessors, (49), 27 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-19 06:59:07,590 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 [] [2022-03-19 06:59:09,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:59:09,962 INFO L93 Difference]: Finished difference Result 643 states and 953 transitions. [2022-03-19 06:59:09,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:59:09,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2022-03-19 06:59:09,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:59:09,977 INFO L225 Difference]: With dead ends: 643 [2022-03-19 06:59:09,977 INFO L226 Difference]: Without dead ends: 343 [2022-03-19 06:59:09,984 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-19 06:59:09,990 INFO L912 BasicCegarLoop]: 335 mSDtfsCounter, 597 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 220 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-03-19 06:59:09,993 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 463 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 379 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-03-19 06:59:10,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-03-19 06:59:10,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 299. [2022-03-19 06:59:10,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 224 states have (on average 1.4464285714285714) internal successors, (324), 240 states have internal predecessors, (324), 49 states have call successors, (49), 27 states have call predecessors, (49), 25 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-03-19 06:59:10,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 407 transitions. [2022-03-19 06:59:10,124 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 407 transitions. Word has length 31 [2022-03-19 06:59:10,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:59:10,124 INFO L478 AbstractCegarLoop]: Abstraction has 299 states and 407 transitions. [2022-03-19 06:59:10,125 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-19 06:59:10,126 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 407 transitions. [2022-03-19 06:59:10,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-19 06:59:10,127 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:59:10,127 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:59:10,127 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 06:59:10,128 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:59:10,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:59:10,130 INFO L85 PathProgramCache]: Analyzing trace with hash 186314115, now seen corresponding path program 1 times [2022-03-19 06:59:10,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:10,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2112839760] [2022-03-19 06:59:10,131 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:59:10,131 INFO L85 PathProgramCache]: Analyzing trace with hash 186314115, now seen corresponding path program 2 times [2022-03-19 06:59:10,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:59:10,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683762962] [2022-03-19 06:59:10,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:59:10,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:59:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:10,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:59:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:10,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:59:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:10,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 06:59:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:10,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:59:10,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:59:10,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683762962] [2022-03-19 06:59:10,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683762962] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:10,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:10,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:59:10,607 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:59:10,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2112839760] [2022-03-19 06:59:10,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2112839760] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:10,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:10,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:59:10,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775417170] [2022-03-19 06:59:10,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:59:10,608 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 06:59:10,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:10,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 06:59:10,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:59:10,609 INFO L87 Difference]: Start difference. First operand 299 states and 407 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-19 06:59:12,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:14,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:16,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:18,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:20,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:21,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:24,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:26,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:59:26,086 INFO L93 Difference]: Finished difference Result 360 states and 492 transitions. [2022-03-19 06:59:26,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 06:59:26,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2022-03-19 06:59:26,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:59:26,089 INFO L225 Difference]: With dead ends: 360 [2022-03-19 06:59:26,089 INFO L226 Difference]: Without dead ends: 343 [2022-03-19 06:59:26,090 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-19 06:59:26,091 INFO L912 BasicCegarLoop]: 314 mSDtfsCounter, 395 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 149 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-03-19 06:59:26,091 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 683 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1533 Invalid, 4 Unknown, 0 Unchecked, 15.3s Time] [2022-03-19 06:59:26,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-03-19 06:59:26,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 299. [2022-03-19 06:59:26,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 224 states have (on average 1.4419642857142858) internal successors, (323), 240 states have internal predecessors, (323), 49 states have call successors, (49), 27 states have call predecessors, (49), 25 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-03-19 06:59:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 406 transitions. [2022-03-19 06:59:26,125 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 406 transitions. Word has length 31 [2022-03-19 06:59:26,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:59:26,125 INFO L478 AbstractCegarLoop]: Abstraction has 299 states and 406 transitions. [2022-03-19 06:59:26,125 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-19 06:59:26,126 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 406 transitions. [2022-03-19 06:59:26,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-19 06:59:26,127 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:59:26,127 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:59:26,128 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 06:59:26,128 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:59:26,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:59:26,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1201516382, now seen corresponding path program 1 times [2022-03-19 06:59:26,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:26,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1102895952] [2022-03-19 06:59:26,129 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:59:26,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1201516382, now seen corresponding path program 2 times [2022-03-19 06:59:26,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:59:26,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140510111] [2022-03-19 06:59:26,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:59:26,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:59:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:26,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:59:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:26,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:59:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:26,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 06:59:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:26,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:26,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 06:59:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:26,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:26,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 06:59:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:59:26,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:59:26,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140510111] [2022-03-19 06:59:26,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140510111] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:26,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:26,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:59:26,569 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:59:26,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1102895952] [2022-03-19 06:59:26,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1102895952] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:26,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:26,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:59:26,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415765679] [2022-03-19 06:59:26,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:59:26,570 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 06:59:26,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:26,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 06:59:26,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-19 06:59:26,571 INFO L87 Difference]: Start difference. First operand 299 states and 406 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 06:59:27,720 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:29,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:31,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:33,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:35,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:37,828 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:39,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:43,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:59:43,973 INFO L93 Difference]: Finished difference Result 599 states and 829 transitions. [2022-03-19 06:59:43,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:59:43,974 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2022-03-19 06:59:43,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:59:43,977 INFO L225 Difference]: With dead ends: 599 [2022-03-19 06:59:43,977 INFO L226 Difference]: Without dead ends: 348 [2022-03-19 06:59:43,978 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-03-19 06:59:43,979 INFO L912 BasicCegarLoop]: 312 mSDtfsCounter, 609 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 253 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-03-19 06:59:43,979 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 792 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1673 Invalid, 5 Unknown, 0 Unchecked, 17.0s Time] [2022-03-19 06:59:43,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-03-19 06:59:44,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 303. [2022-03-19 06:59:44,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 227 states have (on average 1.4361233480176212) internal successors, (326), 243 states have internal predecessors, (326), 49 states have call successors, (49), 27 states have call predecessors, (49), 26 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2022-03-19 06:59:44,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 410 transitions. [2022-03-19 06:59:44,013 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 410 transitions. Word has length 53 [2022-03-19 06:59:44,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:59:44,013 INFO L478 AbstractCegarLoop]: Abstraction has 303 states and 410 transitions. [2022-03-19 06:59:44,013 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 06:59:44,013 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 410 transitions. [2022-03-19 06:59:44,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-19 06:59:44,015 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:59:44,015 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:59:44,015 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-19 06:59:44,015 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:59:44,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:59:44,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1078281185, now seen corresponding path program 1 times [2022-03-19 06:59:44,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:44,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [663657258] [2022-03-19 06:59:44,017 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:59:44,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1078281185, now seen corresponding path program 2 times [2022-03-19 06:59:44,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:59:44,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995725044] [2022-03-19 06:59:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:59:44,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:59:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:44,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:59:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:44,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:59:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:44,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 06:59:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:44,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:44,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 06:59:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:44,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:44,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 06:59:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:44,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:59:44,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:59:44,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995725044] [2022-03-19 06:59:44,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995725044] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:44,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:44,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:59:44,339 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:59:44,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [663657258] [2022-03-19 06:59:44,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [663657258] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:44,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:44,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:59:44,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126738016] [2022-03-19 06:59:44,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:59:44,340 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 06:59:44,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:44,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 06:59:44,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:59:44,341 INFO L87 Difference]: Start difference. First operand 303 states and 410 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 06:59:46,481 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 [] [2022-03-19 06:59:48,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:59:48,565 INFO L93 Difference]: Finished difference Result 492 states and 667 transitions. [2022-03-19 06:59:48,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:59:48,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 53 [2022-03-19 06:59:48,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:59:48,568 INFO L225 Difference]: With dead ends: 492 [2022-03-19 06:59:48,568 INFO L226 Difference]: Without dead ends: 431 [2022-03-19 06:59:48,569 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-03-19 06:59:48,570 INFO L912 BasicCegarLoop]: 364 mSDtfsCounter, 864 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 299 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-03-19 06:59:48,570 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 615 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 808 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-03-19 06:59:48,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-03-19 06:59:48,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 374. [2022-03-19 06:59:48,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 288 states have (on average 1.3715277777777777) internal successors, (395), 292 states have internal predecessors, (395), 48 states have call successors, (48), 33 states have call predecessors, (48), 37 states have return successors, (55), 51 states have call predecessors, (55), 39 states have call successors, (55) [2022-03-19 06:59:48,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 498 transitions. [2022-03-19 06:59:48,615 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 498 transitions. Word has length 53 [2022-03-19 06:59:48,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:59:48,615 INFO L478 AbstractCegarLoop]: Abstraction has 374 states and 498 transitions. [2022-03-19 06:59:48,616 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 06:59:48,616 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 498 transitions. [2022-03-19 06:59:48,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-19 06:59:48,625 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:59:48,625 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:59:48,625 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-19 06:59:48,626 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:59:48,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:59:48,626 INFO L85 PathProgramCache]: Analyzing trace with hash 17478568, now seen corresponding path program 1 times [2022-03-19 06:59:48,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:48,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [99755013] [2022-03-19 06:59:48,627 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:59:48,627 INFO L85 PathProgramCache]: Analyzing trace with hash 17478568, now seen corresponding path program 2 times [2022-03-19 06:59:48,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:59:48,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216508998] [2022-03-19 06:59:48,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:59:48,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:59:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:48,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:59:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:48,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:59:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:48,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 06:59:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:48,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:48,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 06:59:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:48,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:48,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 06:59:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:49,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-19 06:59:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:59:49,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:59:49,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216508998] [2022-03-19 06:59:49,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216508998] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:49,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:49,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:59:49,019 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:59:49,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [99755013] [2022-03-19 06:59:49,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [99755013] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:49,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:49,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:59:49,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811043746] [2022-03-19 06:59:49,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:59:49,028 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 06:59:49,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:49,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 06:59:49,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:59:49,029 INFO L87 Difference]: Start difference. First operand 374 states and 498 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:59:51,161 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 [] [2022-03-19 06:59:52,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:59:52,797 INFO L93 Difference]: Finished difference Result 569 states and 751 transitions. [2022-03-19 06:59:52,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 06:59:52,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 8 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 60 [2022-03-19 06:59:52,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:59:52,800 INFO L225 Difference]: With dead ends: 569 [2022-03-19 06:59:52,800 INFO L226 Difference]: Without dead ends: 450 [2022-03-19 06:59:52,801 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-03-19 06:59:52,803 INFO L912 BasicCegarLoop]: 320 mSDtfsCounter, 974 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 330 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:59:52,803 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 489 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 650 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-03-19 06:59:52,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-19 06:59:52,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 410. [2022-03-19 06:59:52,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 325 states have (on average 1.3723076923076922) internal successors, (446), 327 states have internal predecessors, (446), 44 states have call successors, (44), 33 states have call predecessors, (44), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-03-19 06:59:52,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 545 transitions. [2022-03-19 06:59:52,858 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 545 transitions. Word has length 60 [2022-03-19 06:59:52,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:59:52,859 INFO L478 AbstractCegarLoop]: Abstraction has 410 states and 545 transitions. [2022-03-19 06:59:52,859 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:59:52,859 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 545 transitions. [2022-03-19 06:59:52,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-19 06:59:52,860 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:59:52,860 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:59:52,860 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-19 06:59:52,860 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:59:52,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:59:52,861 INFO L85 PathProgramCache]: Analyzing trace with hash -110356200, now seen corresponding path program 1 times [2022-03-19 06:59:52,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:52,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [451235877] [2022-03-19 06:59:52,861 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:59:52,862 INFO L85 PathProgramCache]: Analyzing trace with hash -110356200, now seen corresponding path program 2 times [2022-03-19 06:59:52,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:59:52,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996015256] [2022-03-19 06:59:52,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:59:52,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:59:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:53,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:59:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:53,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:59:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:53,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 06:59:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:53,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:53,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 06:59:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:53,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:53,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 06:59:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:53,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-19 06:59:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:59:53,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:59:53,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996015256] [2022-03-19 06:59:53,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996015256] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:53,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:53,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:59:53,304 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:59:53,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [451235877] [2022-03-19 06:59:53,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [451235877] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:53,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:53,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:59:53,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120971791] [2022-03-19 06:59:53,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:59:53,305 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 06:59:53,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:53,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 06:59:53,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-19 06:59:53,306 INFO L87 Difference]: Start difference. First operand 410 states and 545 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 06:59:55,472 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 [] [2022-03-19 06:59:57,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:59:57,618 INFO L93 Difference]: Finished difference Result 450 states and 594 transitions. [2022-03-19 06:59:57,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-19 06:59:57,618 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 60 [2022-03-19 06:59:57,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:59:57,621 INFO L225 Difference]: With dead ends: 450 [2022-03-19 06:59:57,621 INFO L226 Difference]: Without dead ends: 442 [2022-03-19 06:59:57,622 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2022-03-19 06:59:57,622 INFO L912 BasicCegarLoop]: 332 mSDtfsCounter, 1505 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 517 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:59:57,622 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 539 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 744 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-03-19 06:59:57,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-03-19 06:59:57,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 415. [2022-03-19 06:59:57,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 330 states have (on average 1.3696969696969696) internal successors, (452), 332 states have internal predecessors, (452), 44 states have call successors, (44), 33 states have call predecessors, (44), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-03-19 06:59:57,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 551 transitions. [2022-03-19 06:59:57,694 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 551 transitions. Word has length 60 [2022-03-19 06:59:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:59:57,694 INFO L478 AbstractCegarLoop]: Abstraction has 415 states and 551 transitions. [2022-03-19 06:59:57,694 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 06:59:57,694 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 551 transitions. [2022-03-19 06:59:57,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-19 06:59:57,696 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:59:57,696 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:59:57,696 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-19 06:59:57,696 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:59:57,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:59:57,696 INFO L85 PathProgramCache]: Analyzing trace with hash 400358010, now seen corresponding path program 1 times [2022-03-19 06:59:57,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:57,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1434738615] [2022-03-19 06:59:57,697 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:59:57,697 INFO L85 PathProgramCache]: Analyzing trace with hash 400358010, now seen corresponding path program 2 times [2022-03-19 06:59:57,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:59:57,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643216182] [2022-03-19 06:59:57,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:59:57,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:59:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:57,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:59:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:57,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:59:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:57,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 06:59:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:57,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:57,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 06:59:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:57,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 06:59:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:58,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:59:58,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:59:58,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643216182] [2022-03-19 06:59:58,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643216182] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:58,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:58,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:59:58,013 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:59:58,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1434738615] [2022-03-19 06:59:58,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1434738615] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:58,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:58,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:59:58,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181075967] [2022-03-19 06:59:58,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:59:58,014 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 06:59:58,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:58,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 06:59:58,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:59:58,015 INFO L87 Difference]: Start difference. First operand 415 states and 551 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 07:00:00,162 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 [] [2022-03-19 07:00:02,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:00:02,155 INFO L93 Difference]: Finished difference Result 433 states and 574 transitions. [2022-03-19 07:00:02,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 07:00:02,156 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2022-03-19 07:00:02,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:00:02,158 INFO L225 Difference]: With dead ends: 433 [2022-03-19 07:00:02,158 INFO L226 Difference]: Without dead ends: 429 [2022-03-19 07:00:02,159 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-03-19 07:00:02,159 INFO L912 BasicCegarLoop]: 298 mSDtfsCounter, 725 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 257 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-03-19 07:00:02,159 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 475 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 675 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-03-19 07:00:02,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-03-19 07:00:02,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 414. [2022-03-19 07:00:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 330 states have (on average 1.3636363636363635) internal successors, (450), 331 states have internal predecessors, (450), 43 states have call successors, (43), 33 states have call predecessors, (43), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-03-19 07:00:02,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 548 transitions. [2022-03-19 07:00:02,227 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 548 transitions. Word has length 62 [2022-03-19 07:00:02,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:00:02,227 INFO L478 AbstractCegarLoop]: Abstraction has 414 states and 548 transitions. [2022-03-19 07:00:02,227 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 07:00:02,227 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 548 transitions. [2022-03-19 07:00:02,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-19 07:00:02,228 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:00:02,229 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:00:02,229 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-19 07:00:02,229 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:00:02,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:00:02,229 INFO L85 PathProgramCache]: Analyzing trace with hash 466089939, now seen corresponding path program 1 times [2022-03-19 07:00:02,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:02,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [65647715] [2022-03-19 07:00:02,230 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:00:02,230 INFO L85 PathProgramCache]: Analyzing trace with hash 466089939, now seen corresponding path program 2 times [2022-03-19 07:00:02,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:00:02,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525695627] [2022-03-19 07:00:02,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:00:02,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:00:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:02,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:00:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:02,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:00:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:02,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:00:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:02,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:02,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:00:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:02,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:02,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:00:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:02,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-19 07:00:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:02,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:00:02,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:00:02,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525695627] [2022-03-19 07:00:02,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525695627] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:02,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:02,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:00:02,632 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:00:02,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [65647715] [2022-03-19 07:00:02,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [65647715] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:02,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:02,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:00:02,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948396748] [2022-03-19 07:00:02,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:00:02,632 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 07:00:02,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:02,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 07:00:02,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-19 07:00:02,633 INFO L87 Difference]: Start difference. First operand 414 states and 548 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 07:00:04,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:06,236 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:08,256 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:10,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:12,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:15,146 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:16,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:00:16,240 INFO L93 Difference]: Finished difference Result 448 states and 589 transitions. [2022-03-19 07:00:16,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 07:00:16,241 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 61 [2022-03-19 07:00:16,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:00:16,246 INFO L225 Difference]: With dead ends: 448 [2022-03-19 07:00:16,246 INFO L226 Difference]: Without dead ends: 440 [2022-03-19 07:00:16,247 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2022-03-19 07:00:16,248 INFO L912 BasicCegarLoop]: 334 mSDtfsCounter, 1683 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 561 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 561 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-03-19 07:00:16,248 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1692 Valid, 603 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [561 Valid, 891 Invalid, 4 Unknown, 0 Unchecked, 12.9s Time] [2022-03-19 07:00:16,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-03-19 07:00:16,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 415. [2022-03-19 07:00:16,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 331 states have (on average 1.3625377643504533) internal successors, (451), 332 states have internal predecessors, (451), 43 states have call successors, (43), 33 states have call predecessors, (43), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-03-19 07:00:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 549 transitions. [2022-03-19 07:00:16,311 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 549 transitions. Word has length 61 [2022-03-19 07:00:16,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:00:16,311 INFO L478 AbstractCegarLoop]: Abstraction has 415 states and 549 transitions. [2022-03-19 07:00:16,311 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 07:00:16,311 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 549 transitions. [2022-03-19 07:00:16,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-19 07:00:16,312 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:00:16,312 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:00:16,313 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-19 07:00:16,313 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:00:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:00:16,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1325055407, now seen corresponding path program 1 times [2022-03-19 07:00:16,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:16,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1841615272] [2022-03-19 07:00:16,314 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:00:16,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1325055407, now seen corresponding path program 2 times [2022-03-19 07:00:16,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:00:16,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036349987] [2022-03-19 07:00:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:00:16,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:00:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:16,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:00:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:16,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:00:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:16,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:00:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:16,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:16,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:00:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:16,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:16,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:00:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:16,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-19 07:00:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:00:16,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:00:16,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036349987] [2022-03-19 07:00:16,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036349987] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:16,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:16,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 07:00:16,650 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:00:16,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1841615272] [2022-03-19 07:00:16,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1841615272] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:16,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:16,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 07:00:16,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589273821] [2022-03-19 07:00:16,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:00:16,651 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 07:00:16,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:16,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 07:00:16,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-19 07:00:16,652 INFO L87 Difference]: Start difference. First operand 415 states and 549 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 07:00:18,794 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 [] [2022-03-19 07:00:21,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:00:21,831 INFO L93 Difference]: Finished difference Result 442 states and 581 transitions. [2022-03-19 07:00:21,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 07:00:21,831 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2022-03-19 07:00:21,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:00:21,833 INFO L225 Difference]: With dead ends: 442 [2022-03-19 07:00:21,833 INFO L226 Difference]: Without dead ends: 389 [2022-03-19 07:00:21,834 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2022-03-19 07:00:21,834 INFO L912 BasicCegarLoop]: 337 mSDtfsCounter, 1384 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 450 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-03-19 07:00:21,835 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1392 Valid, 611 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 877 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-03-19 07:00:21,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-03-19 07:00:21,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 371. [2022-03-19 07:00:21,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 296 states have (on average 1.3817567567567568) internal successors, (409), 302 states have internal predecessors, (409), 42 states have call successors, (42), 32 states have call predecessors, (42), 32 states have return successors, (42), 37 states have call predecessors, (42), 36 states have call successors, (42) [2022-03-19 07:00:21,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 493 transitions. [2022-03-19 07:00:21,906 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 493 transitions. Word has length 62 [2022-03-19 07:00:21,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:00:21,907 INFO L478 AbstractCegarLoop]: Abstraction has 371 states and 493 transitions. [2022-03-19 07:00:21,907 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 07:00:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 493 transitions. [2022-03-19 07:00:21,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-19 07:00:21,909 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:00:21,909 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:00:21,909 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-19 07:00:21,909 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:00:21,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:00:21,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1052170321, now seen corresponding path program 1 times [2022-03-19 07:00:21,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:21,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [836341641] [2022-03-19 07:00:21,911 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:00:21,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1052170321, now seen corresponding path program 2 times [2022-03-19 07:00:21,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:00:21,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860130463] [2022-03-19 07:00:21,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:00:21,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:00:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:22,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:00:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:22,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:00:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:22,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:00:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:22,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:22,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:00:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:22,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:22,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:00:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:22,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-19 07:00:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:22,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 07:00:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:22,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:00:22,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:00:22,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860130463] [2022-03-19 07:00:22,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860130463] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:22,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:22,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:00:22,370 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:00:22,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [836341641] [2022-03-19 07:00:22,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [836341641] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:22,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:22,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:00:22,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583470032] [2022-03-19 07:00:22,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:00:22,371 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 07:00:22,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:22,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 07:00:22,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-19 07:00:22,372 INFO L87 Difference]: Start difference. First operand 371 states and 493 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:00:24,519 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 [] [2022-03-19 07:00:27,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:29,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:00:29,141 INFO L93 Difference]: Finished difference Result 417 states and 550 transitions. [2022-03-19 07:00:29,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 07:00:29,142 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 72 [2022-03-19 07:00:29,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:00:29,144 INFO L225 Difference]: With dead ends: 417 [2022-03-19 07:00:29,144 INFO L226 Difference]: Without dead ends: 409 [2022-03-19 07:00:29,145 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2022-03-19 07:00:29,145 INFO L912 BasicCegarLoop]: 278 mSDtfsCounter, 884 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 274 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-03-19 07:00:29,146 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 572 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1342 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-03-19 07:00:29,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-03-19 07:00:29,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 386. [2022-03-19 07:00:29,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 309 states have (on average 1.3754045307443366) internal successors, (425), 314 states have internal predecessors, (425), 42 states have call successors, (42), 32 states have call predecessors, (42), 34 states have return successors, (44), 39 states have call predecessors, (44), 36 states have call successors, (44) [2022-03-19 07:00:29,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 511 transitions. [2022-03-19 07:00:29,200 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 511 transitions. Word has length 72 [2022-03-19 07:00:29,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:00:29,200 INFO L478 AbstractCegarLoop]: Abstraction has 386 states and 511 transitions. [2022-03-19 07:00:29,201 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:00:29,201 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 511 transitions. [2022-03-19 07:00:29,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-19 07:00:29,202 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:00:29,202 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:00:29,202 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-19 07:00:29,202 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:00:29,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:00:29,203 INFO L85 PathProgramCache]: Analyzing trace with hash 2144673722, now seen corresponding path program 1 times [2022-03-19 07:00:29,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:29,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1790460546] [2022-03-19 07:00:29,203 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:00:29,203 INFO L85 PathProgramCache]: Analyzing trace with hash 2144673722, now seen corresponding path program 2 times [2022-03-19 07:00:29,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:00:29,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450268920] [2022-03-19 07:00:29,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:00:29,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:00:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:29,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:00:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:29,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:00:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:29,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:00:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:29,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:29,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:00:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:29,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:29,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:00:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:29,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-19 07:00:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:29,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 07:00:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:29,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:00:29,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:00:29,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450268920] [2022-03-19 07:00:29,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450268920] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:29,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:29,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:00:29,627 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:00:29,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1790460546] [2022-03-19 07:00:29,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1790460546] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:29,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:29,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:00:29,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596282303] [2022-03-19 07:00:29,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:00:29,628 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 07:00:29,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:29,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 07:00:29,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-19 07:00:29,629 INFO L87 Difference]: Start difference. First operand 386 states and 511 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:00:31,775 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 [] [2022-03-19 07:00:34,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:00:34,706 INFO L93 Difference]: Finished difference Result 417 states and 549 transitions. [2022-03-19 07:00:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 07:00:34,706 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 73 [2022-03-19 07:00:34,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:00:34,708 INFO L225 Difference]: With dead ends: 417 [2022-03-19 07:00:34,708 INFO L226 Difference]: Without dead ends: 409 [2022-03-19 07:00:34,708 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2022-03-19 07:00:34,709 INFO L912 BasicCegarLoop]: 279 mSDtfsCounter, 1057 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 343 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-03-19 07:00:34,709 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1069 Valid, 665 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 1621 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-03-19 07:00:34,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-03-19 07:00:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 387. [2022-03-19 07:00:34,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 310 states have (on average 1.3741935483870968) internal successors, (426), 315 states have internal predecessors, (426), 42 states have call successors, (42), 32 states have call predecessors, (42), 34 states have return successors, (44), 39 states have call predecessors, (44), 36 states have call successors, (44) [2022-03-19 07:00:34,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 512 transitions. [2022-03-19 07:00:34,769 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 512 transitions. Word has length 73 [2022-03-19 07:00:34,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:00:34,769 INFO L478 AbstractCegarLoop]: Abstraction has 387 states and 512 transitions. [2022-03-19 07:00:34,769 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:00:34,769 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 512 transitions. [2022-03-19 07:00:34,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-19 07:00:34,771 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:00:34,771 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:00:34,771 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-19 07:00:34,771 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:00:34,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:00:34,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1821545128, now seen corresponding path program 1 times [2022-03-19 07:00:34,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:34,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1119379621] [2022-03-19 07:00:34,772 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:00:34,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1821545128, now seen corresponding path program 2 times [2022-03-19 07:00:34,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:00:34,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891046087] [2022-03-19 07:00:34,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:00:34,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:00:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:34,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:00:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:34,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:00:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:34,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:00:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:34,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:00:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:35,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:35,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:00:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:35,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-19 07:00:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:35,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 07:00:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:00:35,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:00:35,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891046087] [2022-03-19 07:00:35,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891046087] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:35,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:35,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 07:00:35,075 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:00:35,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1119379621] [2022-03-19 07:00:35,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1119379621] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:35,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:35,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 07:00:35,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802959153] [2022-03-19 07:00:35,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:00:35,076 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 07:00:35,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:35,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 07:00:35,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-19 07:00:35,076 INFO L87 Difference]: Start difference. First operand 387 states and 512 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-19 07:00:37,214 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 [] [2022-03-19 07:00:39,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:00:39,035 INFO L93 Difference]: Finished difference Result 419 states and 554 transitions. [2022-03-19 07:00:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 07:00:39,035 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 74 [2022-03-19 07:00:39,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:00:39,038 INFO L225 Difference]: With dead ends: 419 [2022-03-19 07:00:39,038 INFO L226 Difference]: Without dead ends: 396 [2022-03-19 07:00:39,038 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-03-19 07:00:39,039 INFO L912 BasicCegarLoop]: 273 mSDtfsCounter, 979 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 311 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-03-19 07:00:39,039 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [989 Valid, 457 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 616 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-03-19 07:00:39,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-03-19 07:00:39,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 381. [2022-03-19 07:00:39,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 305 states have (on average 1.3639344262295081) internal successors, (416), 309 states have internal predecessors, (416), 41 states have call successors, (41), 32 states have call predecessors, (41), 34 states have return successors, (44), 39 states have call predecessors, (44), 36 states have call successors, (44) [2022-03-19 07:00:39,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 501 transitions. [2022-03-19 07:00:39,110 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 501 transitions. Word has length 74 [2022-03-19 07:00:39,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:00:39,110 INFO L478 AbstractCegarLoop]: Abstraction has 381 states and 501 transitions. [2022-03-19 07:00:39,110 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-19 07:00:39,111 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 501 transitions. [2022-03-19 07:00:39,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-19 07:00:39,112 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:00:39,112 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:00:39,112 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-19 07:00:39,112 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:00:39,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:00:39,113 INFO L85 PathProgramCache]: Analyzing trace with hash 937494245, now seen corresponding path program 1 times [2022-03-19 07:00:39,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:39,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [160128866] [2022-03-19 07:00:39,113 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:00:39,113 INFO L85 PathProgramCache]: Analyzing trace with hash 937494245, now seen corresponding path program 2 times [2022-03-19 07:00:39,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:00:39,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788210282] [2022-03-19 07:00:39,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:00:39,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:00:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:39,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:00:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:39,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:00:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:39,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:00:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:39,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:39,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:00:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:39,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:39,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:00:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:39,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-19 07:00:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:39,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 07:00:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:00:39,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:00:39,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788210282] [2022-03-19 07:00:39,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788210282] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:39,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:39,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 07:00:39,442 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:00:39,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [160128866] [2022-03-19 07:00:39,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [160128866] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:39,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:39,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 07:00:39,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223015537] [2022-03-19 07:00:39,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:00:39,443 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 07:00:39,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:39,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 07:00:39,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-19 07:00:39,444 INFO L87 Difference]: Start difference. First operand 381 states and 501 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:00:41,596 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 [] [2022-03-19 07:00:43,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:44,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:00:44,886 INFO L93 Difference]: Finished difference Result 437 states and 561 transitions. [2022-03-19 07:00:44,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 07:00:44,887 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 77 [2022-03-19 07:00:44,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:00:44,889 INFO L225 Difference]: With dead ends: 437 [2022-03-19 07:00:44,889 INFO L226 Difference]: Without dead ends: 374 [2022-03-19 07:00:44,890 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-03-19 07:00:44,890 INFO L912 BasicCegarLoop]: 310 mSDtfsCounter, 869 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 272 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-03-19 07:00:44,891 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 628 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 961 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-03-19 07:00:44,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-03-19 07:00:44,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 345. [2022-03-19 07:00:44,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 274 states have (on average 1.3503649635036497) internal successors, (370), 278 states have internal predecessors, (370), 38 states have call successors, (38), 30 states have call predecessors, (38), 32 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2022-03-19 07:00:44,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 447 transitions. [2022-03-19 07:00:44,976 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 447 transitions. Word has length 77 [2022-03-19 07:00:44,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:00:44,976 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 447 transitions. [2022-03-19 07:00:44,976 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:00:44,977 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 447 transitions. [2022-03-19 07:00:44,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-19 07:00:44,978 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:00:44,978 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:00:44,978 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-19 07:00:44,978 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:00:44,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:00:44,978 INFO L85 PathProgramCache]: Analyzing trace with hash 641442499, now seen corresponding path program 1 times [2022-03-19 07:00:44,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:44,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1466247142] [2022-03-19 07:00:44,979 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:00:44,979 INFO L85 PathProgramCache]: Analyzing trace with hash 641442499, now seen corresponding path program 2 times [2022-03-19 07:00:44,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:00:44,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371501045] [2022-03-19 07:00:44,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:00:44,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:00:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:00:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:00:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:00:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:00:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:00:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-19 07:00:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 07:00:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:00:45,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:00:45,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371501045] [2022-03-19 07:00:45,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371501045] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:45,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:45,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:00:45,314 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:00:45,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1466247142] [2022-03-19 07:00:45,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1466247142] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:45,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:45,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:00:45,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80787002] [2022-03-19 07:00:45,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:00:45,315 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 07:00:45,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:45,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 07:00:45,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-19 07:00:45,316 INFO L87 Difference]: Start difference. First operand 345 states and 447 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:00:47,392 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 [] [2022-03-19 07:00:52,452 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:53,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:00:53,970 INFO L93 Difference]: Finished difference Result 417 states and 534 transitions. [2022-03-19 07:00:53,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 07:00:53,970 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2022-03-19 07:00:53,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:00:53,971 INFO L225 Difference]: With dead ends: 417 [2022-03-19 07:00:53,972 INFO L226 Difference]: Without dead ends: 359 [2022-03-19 07:00:53,972 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-03-19 07:00:53,972 INFO L912 BasicCegarLoop]: 279 mSDtfsCounter, 867 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 305 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-03-19 07:00:53,973 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 791 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1784 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-03-19 07:00:53,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-03-19 07:00:54,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 344. [2022-03-19 07:00:54,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 273 states have (on average 1.336996336996337) internal successors, (365), 277 states have internal predecessors, (365), 38 states have call successors, (38), 30 states have call predecessors, (38), 32 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2022-03-19 07:00:54,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 442 transitions. [2022-03-19 07:00:54,038 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 442 transitions. Word has length 75 [2022-03-19 07:00:54,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:00:54,038 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 442 transitions. [2022-03-19 07:00:54,038 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:00:54,039 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 442 transitions. [2022-03-19 07:00:54,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-19 07:00:54,040 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:00:54,040 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:00:54,040 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-19 07:00:54,040 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:00:54,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:00:54,040 INFO L85 PathProgramCache]: Analyzing trace with hash 476602328, now seen corresponding path program 1 times [2022-03-19 07:00:54,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:54,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1075156404] [2022-03-19 07:00:54,041 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:00:54,041 INFO L85 PathProgramCache]: Analyzing trace with hash 476602328, now seen corresponding path program 2 times [2022-03-19 07:00:54,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:00:54,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394339420] [2022-03-19 07:00:54,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:00:54,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:00:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:54,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:00:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:54,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:00:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:54,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:00:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:54,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:54,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:00:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:54,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:54,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:00:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:54,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-19 07:00:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:54,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 07:00:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:00:54,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:00:54,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394339420] [2022-03-19 07:00:54,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394339420] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:54,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:54,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:00:54,430 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:00:54,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1075156404] [2022-03-19 07:00:54,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1075156404] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:54,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:54,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:00:54,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254626354] [2022-03-19 07:00:54,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:00:54,431 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 07:00:54,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:54,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 07:00:54,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-19 07:00:54,432 INFO L87 Difference]: Start difference. First operand 344 states and 442 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-19 07:00:56,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:59,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:01:01,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:01:03,646 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 [] [2022-03-19 07:01:07,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:01:07,040 INFO L93 Difference]: Finished difference Result 422 states and 536 transitions. [2022-03-19 07:01:07,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-19 07:01:07,040 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 76 [2022-03-19 07:01:07,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:01:07,042 INFO L225 Difference]: With dead ends: 422 [2022-03-19 07:01:07,042 INFO L226 Difference]: Without dead ends: 379 [2022-03-19 07:01:07,043 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=271, Invalid=989, Unknown=0, NotChecked=0, Total=1260 [2022-03-19 07:01:07,043 INFO L912 BasicCegarLoop]: 302 mSDtfsCounter, 1036 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 383 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 2073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-03-19 07:01:07,044 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 741 Invalid, 2073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 1687 Invalid, 3 Unknown, 0 Unchecked, 11.8s Time] [2022-03-19 07:01:07,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-03-19 07:01:07,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 344. [2022-03-19 07:01:07,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 273 states have (on average 1.3296703296703296) internal successors, (363), 277 states have internal predecessors, (363), 38 states have call successors, (38), 30 states have call predecessors, (38), 32 states have return successors, (38), 36 states have call predecessors, (38), 33 states have call successors, (38) [2022-03-19 07:01:07,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 439 transitions. [2022-03-19 07:01:07,126 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 439 transitions. Word has length 76 [2022-03-19 07:01:07,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:01:07,126 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 439 transitions. [2022-03-19 07:01:07,126 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-19 07:01:07,126 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 439 transitions. [2022-03-19 07:01:07,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-19 07:01:07,128 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:01:07,128 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:01:07,128 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-19 07:01:07,128 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:01:07,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:01:07,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1346047832, now seen corresponding path program 1 times [2022-03-19 07:01:07,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:07,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1505765152] [2022-03-19 07:01:07,129 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:01:07,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1346047832, now seen corresponding path program 2 times [2022-03-19 07:01:07,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:01:07,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632629855] [2022-03-19 07:01:07,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:01:07,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:01:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:07,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:01:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:07,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:01:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:07,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:01:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:07,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:07,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:01:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:07,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:07,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:01:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:07,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-19 07:01:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:07,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:01:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:07,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:01:07,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:01:07,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632629855] [2022-03-19 07:01:07,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632629855] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:07,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:07,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 07:01:07,433 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:01:07,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1505765152] [2022-03-19 07:01:07,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1505765152] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:07,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:07,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 07:01:07,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760091010] [2022-03-19 07:01:07,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:01:07,434 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 07:01:07,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:07,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 07:01:07,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-19 07:01:07,435 INFO L87 Difference]: Start difference. First operand 344 states and 439 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:01:08,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:01:11,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:01:13,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:01:15,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:01:15,444 INFO L93 Difference]: Finished difference Result 378 states and 480 transitions. [2022-03-19 07:01:15,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 07:01:15,444 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2022-03-19 07:01:15,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:01:15,445 INFO L225 Difference]: With dead ends: 378 [2022-03-19 07:01:15,446 INFO L226 Difference]: Without dead ends: 355 [2022-03-19 07:01:15,446 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-03-19 07:01:15,446 INFO L912 BasicCegarLoop]: 274 mSDtfsCounter, 801 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 274 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-03-19 07:01:15,447 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 473 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 652 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-03-19 07:01:15,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-03-19 07:01:15,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 335. [2022-03-19 07:01:15,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 267 states have (on average 1.3333333333333333) internal successors, (356), 271 states have internal predecessors, (356), 37 states have call successors, (37), 29 states have call predecessors, (37), 30 states have return successors, (36), 34 states have call predecessors, (36), 32 states have call successors, (36) [2022-03-19 07:01:15,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 429 transitions. [2022-03-19 07:01:15,518 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 429 transitions. Word has length 76 [2022-03-19 07:01:15,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:01:15,518 INFO L478 AbstractCegarLoop]: Abstraction has 335 states and 429 transitions. [2022-03-19 07:01:15,519 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:01:15,519 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 429 transitions. [2022-03-19 07:01:15,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-19 07:01:15,520 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:01:15,520 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:01:15,520 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-19 07:01:15,520 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:01:15,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:01:15,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2131421, now seen corresponding path program 1 times [2022-03-19 07:01:15,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:15,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1785158592] [2022-03-19 07:01:15,521 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:01:15,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2131421, now seen corresponding path program 2 times [2022-03-19 07:01:15,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:01:15,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153279981] [2022-03-19 07:01:15,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:01:15,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:01:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:01:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:01:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:01:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:01:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:01:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-19 07:01:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 07:01:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:01:15,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:01:15,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153279981] [2022-03-19 07:01:15,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153279981] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:15,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:15,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 07:01:15,928 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:01:15,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1785158592] [2022-03-19 07:01:15,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1785158592] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:15,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:15,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 07:01:15,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709777530] [2022-03-19 07:01:15,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:01:15,928 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 07:01:15,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:15,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 07:01:15,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-03-19 07:01:15,929 INFO L87 Difference]: Start difference. First operand 335 states and 429 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-19 07:01:18,015 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 [] [2022-03-19 07:01:21,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:01:21,264 INFO L93 Difference]: Finished difference Result 398 states and 505 transitions. [2022-03-19 07:01:21,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 07:01:21,265 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) Word has length 78 [2022-03-19 07:01:21,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:01:21,267 INFO L225 Difference]: With dead ends: 398 [2022-03-19 07:01:21,267 INFO L226 Difference]: Without dead ends: 354 [2022-03-19 07:01:21,267 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-03-19 07:01:21,268 INFO L912 BasicCegarLoop]: 271 mSDtfsCounter, 800 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 276 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 2608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-03-19 07:01:21,268 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 944 Invalid, 2608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 2331 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-03-19 07:01:21,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-19 07:01:21,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 334. [2022-03-19 07:01:21,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 266 states have (on average 1.330827067669173) internal successors, (354), 270 states have internal predecessors, (354), 37 states have call successors, (37), 29 states have call predecessors, (37), 30 states have return successors, (36), 34 states have call predecessors, (36), 32 states have call successors, (36) [2022-03-19 07:01:21,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 427 transitions. [2022-03-19 07:01:21,334 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 427 transitions. Word has length 78 [2022-03-19 07:01:21,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:01:21,334 INFO L478 AbstractCegarLoop]: Abstraction has 334 states and 427 transitions. [2022-03-19 07:01:21,334 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-19 07:01:21,334 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 427 transitions. [2022-03-19 07:01:21,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-19 07:01:21,335 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:01:21,335 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:01:21,335 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-19 07:01:21,336 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:01:21,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:01:21,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1889602735, now seen corresponding path program 1 times [2022-03-19 07:01:21,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:21,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1925884587] [2022-03-19 07:01:21,336 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:01:21,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1889602735, now seen corresponding path program 2 times [2022-03-19 07:01:21,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:01:21,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994579358] [2022-03-19 07:01:21,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:01:21,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:01:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:21,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:01:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:21,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:01:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:21,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:01:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:21,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:21,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:01:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:21,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:21,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:01:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:21,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-19 07:01:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:21,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:01:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:21,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:01:21,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:01:21,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994579358] [2022-03-19 07:01:21,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994579358] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:21,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:21,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 07:01:21,805 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:01:21,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1925884587] [2022-03-19 07:01:21,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1925884587] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:21,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:21,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 07:01:21,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603595019] [2022-03-19 07:01:21,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:01:21,806 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-19 07:01:21,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:21,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-19 07:01:21,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-19 07:01:21,806 INFO L87 Difference]: Start difference. First operand 334 states and 427 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-19 07:01:23,897 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 [] [2022-03-19 07:01:30,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:01:30,021 INFO L93 Difference]: Finished difference Result 475 states and 607 transitions. [2022-03-19 07:01:30,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 07:01:30,023 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2022-03-19 07:01:30,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:01:30,033 INFO L225 Difference]: With dead ends: 475 [2022-03-19 07:01:30,033 INFO L226 Difference]: Without dead ends: 367 [2022-03-19 07:01:30,034 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-03-19 07:01:30,035 INFO L912 BasicCegarLoop]: 266 mSDtfsCounter, 598 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 198 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 2946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-03-19 07:01:30,036 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 1039 Invalid, 2946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2747 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-03-19 07:01:30,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-03-19 07:01:30,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 338. [2022-03-19 07:01:30,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 270 states have (on average 1.3296296296296297) internal successors, (359), 275 states have internal predecessors, (359), 36 states have call successors, (36), 29 states have call predecessors, (36), 31 states have return successors, (37), 33 states have call predecessors, (37), 31 states have call successors, (37) [2022-03-19 07:01:30,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 432 transitions. [2022-03-19 07:01:30,114 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 432 transitions. Word has length 79 [2022-03-19 07:01:30,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:01:30,114 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 432 transitions. [2022-03-19 07:01:30,115 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-19 07:01:30,115 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 432 transitions. [2022-03-19 07:01:30,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-19 07:01:30,116 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:01:30,116 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:01:30,116 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-19 07:01:30,116 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:01:30,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:01:30,116 INFO L85 PathProgramCache]: Analyzing trace with hash -2045108737, now seen corresponding path program 1 times [2022-03-19 07:01:30,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:30,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1338700778] [2022-03-19 07:01:30,117 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:01:30,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2045108737, now seen corresponding path program 2 times [2022-03-19 07:01:30,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:01:30,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839176966] [2022-03-19 07:01:30,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:01:30,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:01:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:01:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:01:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:01:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:01:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:01:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-19 07:01:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 07:01:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:01:30,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:01:30,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839176966] [2022-03-19 07:01:30,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839176966] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:30,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:30,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 07:01:30,493 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:01:30,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1338700778] [2022-03-19 07:01:30,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1338700778] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:30,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:30,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 07:01:30,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729196221] [2022-03-19 07:01:30,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:01:30,494 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 07:01:30,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:30,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 07:01:30,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-19 07:01:30,495 INFO L87 Difference]: Start difference. First operand 338 states and 432 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:01:32,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:01:35,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:01:36,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:01:36,976 INFO L93 Difference]: Finished difference Result 429 states and 546 transitions. [2022-03-19 07:01:36,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-19 07:01:36,977 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2022-03-19 07:01:36,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:01:36,978 INFO L225 Difference]: With dead ends: 429 [2022-03-19 07:01:36,978 INFO L226 Difference]: Without dead ends: 376 [2022-03-19 07:01:36,979 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2022-03-19 07:01:36,979 INFO L912 BasicCegarLoop]: 277 mSDtfsCounter, 1112 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 372 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-03-19 07:01:36,980 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1127 Valid, 548 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1281 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-03-19 07:01:36,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-03-19 07:01:37,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 329. [2022-03-19 07:01:37,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 262 states have (on average 1.3244274809160306) internal successors, (347), 266 states have internal predecessors, (347), 36 states have call successors, (36), 29 states have call predecessors, (36), 30 states have return successors, (35), 33 states have call predecessors, (35), 31 states have call successors, (35) [2022-03-19 07:01:37,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 418 transitions. [2022-03-19 07:01:37,080 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 418 transitions. Word has length 79 [2022-03-19 07:01:37,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:01:37,080 INFO L478 AbstractCegarLoop]: Abstraction has 329 states and 418 transitions. [2022-03-19 07:01:37,081 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:01:37,081 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 418 transitions. [2022-03-19 07:01:37,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-19 07:01:37,082 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:01:37,082 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:01:37,082 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-19 07:01:37,082 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:01:37,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:01:37,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1773831806, now seen corresponding path program 1 times [2022-03-19 07:01:37,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:37,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1101925090] [2022-03-19 07:01:37,083 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:01:37,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1773831806, now seen corresponding path program 2 times [2022-03-19 07:01:37,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:01:37,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974176565] [2022-03-19 07:01:37,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:01:37,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:01:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:37,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:01:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:37,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:01:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:37,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:01:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:37,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:37,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:01:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:37,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:37,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:01:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:37,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-19 07:01:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:37,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-19 07:01:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:37,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:37,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-19 07:01:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:01:37,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:01:37,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974176565] [2022-03-19 07:01:37,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974176565] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:37,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:37,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 07:01:37,375 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:01:37,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1101925090] [2022-03-19 07:01:37,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1101925090] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:37,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:37,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 07:01:37,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143358892] [2022-03-19 07:01:37,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:01:37,376 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 07:01:37,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:37,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 07:01:37,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-19 07:01:37,376 INFO L87 Difference]: Start difference. First operand 329 states and 418 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-03-19 07:01:39,510 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 [] [2022-03-19 07:01:41,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:01:41,387 INFO L93 Difference]: Finished difference Result 416 states and 527 transitions. [2022-03-19 07:01:41,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 07:01:41,387 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 84 [2022-03-19 07:01:41,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:01:41,389 INFO L225 Difference]: With dead ends: 416 [2022-03-19 07:01:41,389 INFO L226 Difference]: Without dead ends: 357 [2022-03-19 07:01:41,392 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-03-19 07:01:41,395 INFO L912 BasicCegarLoop]: 263 mSDtfsCounter, 668 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 244 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-03-19 07:01:41,395 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 491 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 701 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-03-19 07:01:41,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-03-19 07:01:41,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 327. [2022-03-19 07:01:41,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 261 states have (on average 1.314176245210728) internal successors, (343), 264 states have internal predecessors, (343), 35 states have call successors, (35), 29 states have call predecessors, (35), 30 states have return successors, (35), 33 states have call predecessors, (35), 31 states have call successors, (35) [2022-03-19 07:01:41,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 413 transitions. [2022-03-19 07:01:41,480 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 413 transitions. Word has length 84 [2022-03-19 07:01:41,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:01:41,480 INFO L478 AbstractCegarLoop]: Abstraction has 327 states and 413 transitions. [2022-03-19 07:01:41,480 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-03-19 07:01:41,480 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 413 transitions. [2022-03-19 07:01:41,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-19 07:01:41,481 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:01:41,481 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:01:41,482 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-19 07:01:41,482 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:01:41,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:01:41,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1690581556, now seen corresponding path program 1 times [2022-03-19 07:01:41,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:41,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1001949362] [2022-03-19 07:01:41,483 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:01:41,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1690581556, now seen corresponding path program 2 times [2022-03-19 07:01:41,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:01:41,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899899121] [2022-03-19 07:01:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:01:41,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:01:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:41,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:01:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:41,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:01:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:41,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:01:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:41,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:41,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:01:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:41,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:41,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:01:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:41,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-19 07:01:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:41,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 07:01:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:01:41,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:01:41,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899899121] [2022-03-19 07:01:41,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899899121] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:41,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:41,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 07:01:41,839 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:01:41,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1001949362] [2022-03-19 07:01:41,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1001949362] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:41,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:41,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 07:01:41,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854235434] [2022-03-19 07:01:41,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:01:41,840 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 07:01:41,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:41,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 07:01:41,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-19 07:01:41,840 INFO L87 Difference]: Start difference. First operand 327 states and 413 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:01:43,904 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 [] [2022-03-19 07:01:45,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:01:45,616 INFO L93 Difference]: Finished difference Result 371 states and 465 transitions. [2022-03-19 07:01:45,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 07:01:45,617 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 80 [2022-03-19 07:01:45,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:01:45,618 INFO L225 Difference]: With dead ends: 371 [2022-03-19 07:01:45,618 INFO L226 Difference]: Without dead ends: 346 [2022-03-19 07:01:45,619 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-03-19 07:01:45,620 INFO L912 BasicCegarLoop]: 257 mSDtfsCounter, 893 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 286 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-03-19 07:01:45,620 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [903 Valid, 485 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 749 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-03-19 07:01:45,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-03-19 07:01:45,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 326. [2022-03-19 07:01:45,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 260 states have (on average 1.3115384615384615) internal successors, (341), 263 states have internal predecessors, (341), 35 states have call successors, (35), 29 states have call predecessors, (35), 30 states have return successors, (35), 33 states have call predecessors, (35), 31 states have call successors, (35) [2022-03-19 07:01:45,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 411 transitions. [2022-03-19 07:01:45,710 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 411 transitions. Word has length 80 [2022-03-19 07:01:45,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:01:45,710 INFO L478 AbstractCegarLoop]: Abstraction has 326 states and 411 transitions. [2022-03-19 07:01:45,710 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:01:45,710 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 411 transitions. [2022-03-19 07:01:45,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-19 07:01:45,711 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:01:45,711 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:01:45,711 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-19 07:01:45,712 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:01:45,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:01:45,712 INFO L85 PathProgramCache]: Analyzing trace with hash 664933900, now seen corresponding path program 1 times [2022-03-19 07:01:45,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:45,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1326518209] [2022-03-19 07:01:45,712 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:01:45,713 INFO L85 PathProgramCache]: Analyzing trace with hash 664933900, now seen corresponding path program 2 times [2022-03-19 07:01:45,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:01:45,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792398906] [2022-03-19 07:01:45,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:01:45,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:01:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:45,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:01:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:45,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:01:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:45,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:01:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:45,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:45,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:01:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:45,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:45,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:01:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:46,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-19 07:01:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:46,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 07:01:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:46,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:01:46,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:01:46,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792398906] [2022-03-19 07:01:46,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792398906] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:46,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:46,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 07:01:46,082 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:01:46,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1326518209] [2022-03-19 07:01:46,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1326518209] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:46,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:46,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 07:01:46,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63986103] [2022-03-19 07:01:46,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:01:46,083 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 07:01:46,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:46,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 07:01:46,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-19 07:01:46,084 INFO L87 Difference]: Start difference. First operand 326 states and 411 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 8 states have internal predecessors, (60), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-19 07:01:48,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:01:52,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:01:53,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:01:53,208 INFO L93 Difference]: Finished difference Result 353 states and 444 transitions. [2022-03-19 07:01:53,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 07:01:53,208 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 8 states have internal predecessors, (60), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 80 [2022-03-19 07:01:53,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:01:53,209 INFO L225 Difference]: With dead ends: 353 [2022-03-19 07:01:53,209 INFO L226 Difference]: Without dead ends: 205 [2022-03-19 07:01:53,210 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2022-03-19 07:01:53,211 INFO L912 BasicCegarLoop]: 230 mSDtfsCounter, 1430 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 492 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-03-19 07:01:53,211 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1436 Valid, 467 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 1230 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-03-19 07:01:53,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-03-19 07:01:53,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 186. [2022-03-19 07:01:53,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 141 states have (on average 1.2411347517730495) internal successors, (175), 144 states have internal predecessors, (175), 23 states have call successors, (23), 21 states have call predecessors, (23), 21 states have return successors, (22), 20 states have call predecessors, (22), 19 states have call successors, (22) [2022-03-19 07:01:53,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 220 transitions. [2022-03-19 07:01:53,259 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 220 transitions. Word has length 80 [2022-03-19 07:01:53,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:01:53,260 INFO L478 AbstractCegarLoop]: Abstraction has 186 states and 220 transitions. [2022-03-19 07:01:53,260 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 8 states have internal predecessors, (60), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-19 07:01:53,260 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 220 transitions. [2022-03-19 07:01:53,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-19 07:01:53,260 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:01:53,261 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:01:53,261 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-19 07:01:53,261 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:01:53,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:01:53,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1299022194, now seen corresponding path program 1 times [2022-03-19 07:01:53,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:53,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1825192576] [2022-03-19 07:01:53,262 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:01:53,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1299022194, now seen corresponding path program 2 times [2022-03-19 07:01:53,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:01:53,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734442989] [2022-03-19 07:01:53,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:01:53,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:01:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:53,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:01:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:53,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:01:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:53,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:01:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:53,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:53,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:01:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:53,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:53,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:01:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:53,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-19 07:01:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:53,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 07:01:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:53,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:01:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:53,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:01:53,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:01:53,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734442989] [2022-03-19 07:01:53,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734442989] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:53,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:53,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:01:53,611 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:01:53,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1825192576] [2022-03-19 07:01:53,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1825192576] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:53,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:53,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:01:53,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398154075] [2022-03-19 07:01:53,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:01:53,614 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 07:01:53,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:53,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 07:01:53,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-19 07:01:53,615 INFO L87 Difference]: Start difference. First operand 186 states and 220 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-03-19 07:01:55,685 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:01:58,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:02:01,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:02:02,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:02:02,261 INFO L93 Difference]: Finished difference Result 300 states and 368 transitions. [2022-03-19 07:02:02,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 07:02:02,261 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 88 [2022-03-19 07:02:02,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:02:02,262 INFO L225 Difference]: With dead ends: 300 [2022-03-19 07:02:02,262 INFO L226 Difference]: Without dead ends: 237 [2022-03-19 07:02:02,263 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-03-19 07:02:02,264 INFO L912 BasicCegarLoop]: 135 mSDtfsCounter, 423 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 231 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-03-19 07:02:02,264 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 356 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 723 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-03-19 07:02:02,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-03-19 07:02:02,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 199. [2022-03-19 07:02:02,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 152 states have (on average 1.2236842105263157) internal successors, (186), 155 states have internal predecessors, (186), 23 states have call successors, (23), 21 states have call predecessors, (23), 23 states have return successors, (24), 22 states have call predecessors, (24), 19 states have call successors, (24) [2022-03-19 07:02:02,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 233 transitions. [2022-03-19 07:02:02,330 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 233 transitions. Word has length 88 [2022-03-19 07:02:02,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:02:02,330 INFO L478 AbstractCegarLoop]: Abstraction has 199 states and 233 transitions. [2022-03-19 07:02:02,330 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-03-19 07:02:02,330 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 233 transitions. [2022-03-19 07:02:02,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-19 07:02:02,331 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:02,331 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:02,331 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-19 07:02:02,331 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:02,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:02,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1324935307, now seen corresponding path program 1 times [2022-03-19 07:02:02,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:02,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [988947405] [2022-03-19 07:02:02,332 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:02:02,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1324935307, now seen corresponding path program 2 times [2022-03-19 07:02:02,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:02,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767205259] [2022-03-19 07:02:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:02,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:02:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:02:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:02:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:02:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-19 07:02:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 07:02:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:02:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:02:02,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:02,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767205259] [2022-03-19 07:02:02,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767205259] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:02,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:02,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 07:02:02,662 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:02,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [988947405] [2022-03-19 07:02:02,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [988947405] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:02,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:02,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 07:02:02,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499159657] [2022-03-19 07:02:02,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:02,663 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 07:02:02,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 07:02:02,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-19 07:02:02,663 INFO L87 Difference]: Start difference. First operand 199 states and 233 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-19 07:02:04,742 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 [] [2022-03-19 07:02:06,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:02:06,278 INFO L93 Difference]: Finished difference Result 437 states and 522 transitions. [2022-03-19 07:02:06,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 07:02:06,279 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2022-03-19 07:02:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:02:06,281 INFO L225 Difference]: With dead ends: 437 [2022-03-19 07:02:06,281 INFO L226 Difference]: Without dead ends: 408 [2022-03-19 07:02:06,282 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2022-03-19 07:02:06,283 INFO L912 BasicCegarLoop]: 143 mSDtfsCounter, 610 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 288 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-03-19 07:02:06,283 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 267 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 403 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-03-19 07:02:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-03-19 07:02:06,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 345. [2022-03-19 07:02:06,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 268 states have (on average 1.2350746268656716) internal successors, (331), 272 states have internal predecessors, (331), 36 states have call successors, (36), 34 states have call predecessors, (36), 40 states have return successors, (42), 38 states have call predecessors, (42), 32 states have call successors, (42) [2022-03-19 07:02:06,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 409 transitions. [2022-03-19 07:02:06,392 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 409 transitions. Word has length 89 [2022-03-19 07:02:06,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:02:06,392 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 409 transitions. [2022-03-19 07:02:06,392 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-19 07:02:06,392 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 409 transitions. [2022-03-19 07:02:06,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-19 07:02:06,393 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:06,393 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:06,394 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-19 07:02:06,394 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:06,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:06,394 INFO L85 PathProgramCache]: Analyzing trace with hash 450072055, now seen corresponding path program 1 times [2022-03-19 07:02:06,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:06,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [238046607] [2022-03-19 07:02:06,394 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:02:06,395 INFO L85 PathProgramCache]: Analyzing trace with hash 450072055, now seen corresponding path program 2 times [2022-03-19 07:02:06,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:06,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79247956] [2022-03-19 07:02:06,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:06,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:06,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:06,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:02:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:06,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:02:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:06,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:06,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:02:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:06,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:06,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:02:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:06,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-19 07:02:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:06,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 07:02:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:06,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:02:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:06,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:02:06,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:06,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79247956] [2022-03-19 07:02:06,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79247956] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:06,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:06,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 07:02:06,730 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:06,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [238046607] [2022-03-19 07:02:06,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [238046607] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:06,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:06,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 07:02:06,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140133749] [2022-03-19 07:02:06,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:06,731 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 07:02:06,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:06,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 07:02:06,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-19 07:02:06,732 INFO L87 Difference]: Start difference. First operand 345 states and 409 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-19 07:02:08,809 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 [] [2022-03-19 07:02:12,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:02:12,366 INFO L93 Difference]: Finished difference Result 657 states and 796 transitions. [2022-03-19 07:02:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 07:02:12,367 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 89 [2022-03-19 07:02:12,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:02:12,369 INFO L225 Difference]: With dead ends: 657 [2022-03-19 07:02:12,369 INFO L226 Difference]: Without dead ends: 399 [2022-03-19 07:02:12,369 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-03-19 07:02:12,370 INFO L912 BasicCegarLoop]: 139 mSDtfsCounter, 210 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 123 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-03-19 07:02:12,370 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 391 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 741 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-03-19 07:02:12,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-03-19 07:02:12,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 337. [2022-03-19 07:02:12,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 262 states have (on average 1.2328244274809161) internal successors, (323), 266 states have internal predecessors, (323), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-03-19 07:02:12,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 399 transitions. [2022-03-19 07:02:12,493 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 399 transitions. Word has length 89 [2022-03-19 07:02:12,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:02:12,494 INFO L478 AbstractCegarLoop]: Abstraction has 337 states and 399 transitions. [2022-03-19 07:02:12,494 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-19 07:02:12,494 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 399 transitions. [2022-03-19 07:02:12,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-19 07:02:12,495 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:12,495 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:12,495 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-19 07:02:12,495 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:12,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:12,496 INFO L85 PathProgramCache]: Analyzing trace with hash -623916271, now seen corresponding path program 1 times [2022-03-19 07:02:12,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:12,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1264348928] [2022-03-19 07:02:12,496 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:02:12,496 INFO L85 PathProgramCache]: Analyzing trace with hash -623916271, now seen corresponding path program 2 times [2022-03-19 07:02:12,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:12,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815387113] [2022-03-19 07:02:12,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:12,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:12,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:12,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:02:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:12,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:02:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:12,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:13,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:02:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:13,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:13,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 07:02:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:13,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 07:02:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:13,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-19 07:02:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:13,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-19 07:02:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:13,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-19 07:02:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:13,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:02:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:13,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:13,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:02:13,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:13,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815387113] [2022-03-19 07:02:13,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815387113] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:13,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:13,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:02:13,198 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:13,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1264348928] [2022-03-19 07:02:13,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1264348928] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:13,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:13,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:02:13,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359905849] [2022-03-19 07:02:13,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:13,200 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 07:02:13,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:13,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 07:02:13,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-19 07:02:13,202 INFO L87 Difference]: Start difference. First operand 337 states and 399 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-03-19 07:02:15,280 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 [] [2022-03-19 07:02:16,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:02:16,498 INFO L93 Difference]: Finished difference Result 675 states and 810 transitions. [2022-03-19 07:02:16,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 07:02:16,498 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2022-03-19 07:02:16,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:02:16,500 INFO L225 Difference]: With dead ends: 675 [2022-03-19 07:02:16,500 INFO L226 Difference]: Without dead ends: 389 [2022-03-19 07:02:16,500 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-03-19 07:02:16,501 INFO L912 BasicCegarLoop]: 139 mSDtfsCounter, 332 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 171 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-19 07:02:16,501 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 327 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 445 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-03-19 07:02:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-03-19 07:02:16,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 339. [2022-03-19 07:02:16,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 264 states have (on average 1.231060606060606) internal successors, (325), 268 states have internal predecessors, (325), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-03-19 07:02:16,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 401 transitions. [2022-03-19 07:02:16,622 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 401 transitions. Word has length 102 [2022-03-19 07:02:16,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:02:16,623 INFO L478 AbstractCegarLoop]: Abstraction has 339 states and 401 transitions. [2022-03-19 07:02:16,623 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-03-19 07:02:16,623 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 401 transitions. [2022-03-19 07:02:16,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-19 07:02:16,623 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:16,624 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:16,624 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-19 07:02:16,624 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:16,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:16,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1023672093, now seen corresponding path program 1 times [2022-03-19 07:02:16,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:16,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [466935070] [2022-03-19 07:02:16,636 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 07:02:16,636 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 07:02:16,636 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:02:16,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1023672093, now seen corresponding path program 2 times [2022-03-19 07:02:16,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:16,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148441896] [2022-03-19 07:02:16,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:16,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:02:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:02:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:02:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 07:02:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:02:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 07:02:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 07:02:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-19 07:02:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:02:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:02:17,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:17,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148441896] [2022-03-19 07:02:17,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148441896] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 07:02:17,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016846348] [2022-03-19 07:02:17,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 07:02:17,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 07:02:17,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 07:02:17,332 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) [2022-03-19 07:02:17,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 07:02:18,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 07:02:18,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 07:02:18,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-19 07:02:18,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 07:02:18,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-19 07:02:18,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 07:02:18,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016846348] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:18,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 07:02:18,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-03-19 07:02:18,516 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:18,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [466935070] [2022-03-19 07:02:18,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [466935070] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:18,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:18,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:02:18,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008580607] [2022-03-19 07:02:18,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:18,517 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 07:02:18,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:18,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 07:02:18,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-19 07:02:18,517 INFO L87 Difference]: Start difference. First operand 339 states and 401 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2022-03-19 07:02:18,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:02:18,669 INFO L93 Difference]: Finished difference Result 435 states and 520 transitions. [2022-03-19 07:02:18,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 07:02:18,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) Word has length 103 [2022-03-19 07:02:18,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:02:18,671 INFO L225 Difference]: With dead ends: 435 [2022-03-19 07:02:18,671 INFO L226 Difference]: Without dead ends: 325 [2022-03-19 07:02:18,672 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-19 07:02:18,673 INFO L912 BasicCegarLoop]: 162 mSDtfsCounter, 15 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 07:02:18,673 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 629 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 07:02:18,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-03-19 07:02:18,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2022-03-19 07:02:18,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 250 states have (on average 1.22) internal successors, (305), 254 states have internal predecessors, (305), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-03-19 07:02:18,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 381 transitions. [2022-03-19 07:02:18,834 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 381 transitions. Word has length 103 [2022-03-19 07:02:18,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:02:18,835 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 381 transitions. [2022-03-19 07:02:18,835 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2022-03-19 07:02:18,835 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 381 transitions. [2022-03-19 07:02:18,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-19 07:02:18,836 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:18,836 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:18,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-19 07:02:19,036 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-19 07:02:19,037 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:19,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:19,038 INFO L85 PathProgramCache]: Analyzing trace with hash 813900694, now seen corresponding path program 1 times [2022-03-19 07:02:19,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:19,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1330468362] [2022-03-19 07:02:19,039 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 07:02:19,039 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 07:02:19,039 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:02:19,040 INFO L85 PathProgramCache]: Analyzing trace with hash 813900694, now seen corresponding path program 2 times [2022-03-19 07:02:19,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:19,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122841873] [2022-03-19 07:02:19,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:19,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:19,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:19,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:02:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:19,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:02:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:19,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:19,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:02:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:19,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:19,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 07:02:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:19,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:02:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:19,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 07:02:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:19,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 07:02:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-19 07:02:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:19,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:02:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:19,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:19,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:02:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:19,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-19 07:02:19,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:19,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122841873] [2022-03-19 07:02:19,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122841873] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:19,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:19,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:02:19,480 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:19,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1330468362] [2022-03-19 07:02:19,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1330468362] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:19,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:19,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:02:19,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750997935] [2022-03-19 07:02:19,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:19,481 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 07:02:19,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:19,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 07:02:19,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-03-19 07:02:19,481 INFO L87 Difference]: Start difference. First operand 325 states and 381 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-19 07:02:21,658 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 [] [2022-03-19 07:02:23,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:02:23,288 INFO L93 Difference]: Finished difference Result 459 states and 550 transitions. [2022-03-19 07:02:23,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 07:02:23,289 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 107 [2022-03-19 07:02:23,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:02:23,290 INFO L225 Difference]: With dead ends: 459 [2022-03-19 07:02:23,290 INFO L226 Difference]: Without dead ends: 363 [2022-03-19 07:02:23,291 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2022-03-19 07:02:23,291 INFO L912 BasicCegarLoop]: 130 mSDtfsCounter, 563 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 289 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-03-19 07:02:23,291 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 293 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 456 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-03-19 07:02:23,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-03-19 07:02:23,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 313. [2022-03-19 07:02:23,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 240 states have (on average 1.2125) internal successors, (291), 244 states have internal predecessors, (291), 36 states have call successors, (36), 34 states have call predecessors, (36), 36 states have return successors, (38), 34 states have call predecessors, (38), 32 states have call successors, (38) [2022-03-19 07:02:23,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 365 transitions. [2022-03-19 07:02:23,405 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 365 transitions. Word has length 107 [2022-03-19 07:02:23,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:02:23,405 INFO L478 AbstractCegarLoop]: Abstraction has 313 states and 365 transitions. [2022-03-19 07:02:23,405 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-19 07:02:23,405 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 365 transitions. [2022-03-19 07:02:23,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-19 07:02:23,406 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:23,406 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:23,406 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-19 07:02:23,406 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:23,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:23,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1477106018, now seen corresponding path program 1 times [2022-03-19 07:02:23,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:23,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [13938301] [2022-03-19 07:02:23,408 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 07:02:23,408 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 07:02:23,408 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:02:23,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1477106018, now seen corresponding path program 2 times [2022-03-19 07:02:23,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:23,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226459554] [2022-03-19 07:02:23,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:23,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:23,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:23,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:02:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:23,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:02:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:23,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:23,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:02:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:23,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:23,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 07:02:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:23,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:02:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:23,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 07:02:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:23,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 07:02:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:23,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-19 07:02:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:23,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:02:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:23,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:23,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:02:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-19 07:02:23,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:23,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226459554] [2022-03-19 07:02:23,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226459554] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:23,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:23,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:02:23,815 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:23,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [13938301] [2022-03-19 07:02:23,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [13938301] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:23,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:23,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:02:23,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996945744] [2022-03-19 07:02:23,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:23,817 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 07:02:23,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:23,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 07:02:23,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-03-19 07:02:23,818 INFO L87 Difference]: Start difference. First operand 313 states and 365 transitions. Second operand has 11 states, 11 states have (on average 7.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (18), 10 states have call predecessors, (18), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 07:02:25,901 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 [] [2022-03-19 07:02:27,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:02:27,593 INFO L93 Difference]: Finished difference Result 395 states and 474 transitions. [2022-03-19 07:02:27,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 07:02:27,593 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (18), 10 states have call predecessors, (18), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 109 [2022-03-19 07:02:27,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:02:27,595 INFO L225 Difference]: With dead ends: 395 [2022-03-19 07:02:27,595 INFO L226 Difference]: Without dead ends: 392 [2022-03-19 07:02:27,595 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-03-19 07:02:27,595 INFO L912 BasicCegarLoop]: 148 mSDtfsCounter, 299 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 147 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-03-19 07:02:27,596 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 311 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 394 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-03-19 07:02:27,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-03-19 07:02:27,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 321. [2022-03-19 07:02:27,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 248 states have (on average 1.221774193548387) internal successors, (303), 252 states have internal predecessors, (303), 36 states have call successors, (36), 34 states have call predecessors, (36), 36 states have return successors, (38), 34 states have call predecessors, (38), 32 states have call successors, (38) [2022-03-19 07:02:27,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 377 transitions. [2022-03-19 07:02:27,723 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 377 transitions. Word has length 109 [2022-03-19 07:02:27,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:02:27,723 INFO L478 AbstractCegarLoop]: Abstraction has 321 states and 377 transitions. [2022-03-19 07:02:27,724 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (18), 10 states have call predecessors, (18), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 07:02:27,724 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 377 transitions. [2022-03-19 07:02:27,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-19 07:02:27,725 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:27,725 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:27,725 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-19 07:02:27,725 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:27,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:27,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1629931519, now seen corresponding path program 1 times [2022-03-19 07:02:27,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:27,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [390016499] [2022-03-19 07:02:27,728 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 07:02:27,728 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 07:02:27,728 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:02:27,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1629931519, now seen corresponding path program 2 times [2022-03-19 07:02:27,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:27,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312448970] [2022-03-19 07:02:27,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:27,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:27,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:27,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:02:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:27,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:02:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:27,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:27,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:02:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:27,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:27,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 07:02:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:27,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:02:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:28,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 07:02:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:28,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 07:02:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:28,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-19 07:02:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:28,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:02:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:28,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:28,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:02:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-19 07:02:28,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:28,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312448970] [2022-03-19 07:02:28,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312448970] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:28,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:28,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:02:28,091 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:28,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [390016499] [2022-03-19 07:02:28,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [390016499] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:28,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:28,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:02:28,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023101587] [2022-03-19 07:02:28,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:28,092 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 07:02:28,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:28,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 07:02:28,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-03-19 07:02:28,092 INFO L87 Difference]: Start difference. First operand 321 states and 377 transitions. Second operand has 11 states, 11 states have (on average 7.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 07:02:30,167 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 [] [2022-03-19 07:02:31,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:02:31,412 INFO L93 Difference]: Finished difference Result 471 states and 566 transitions. [2022-03-19 07:02:31,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 07:02:31,412 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 109 [2022-03-19 07:02:31,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:02:31,414 INFO L225 Difference]: With dead ends: 471 [2022-03-19 07:02:31,414 INFO L226 Difference]: Without dead ends: 383 [2022-03-19 07:02:31,414 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-03-19 07:02:31,415 INFO L912 BasicCegarLoop]: 142 mSDtfsCounter, 203 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 112 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-19 07:02:31,415 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 313 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 385 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-03-19 07:02:31,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-03-19 07:02:31,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 327. [2022-03-19 07:02:31,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 254 states have (on average 1.2165354330708662) internal successors, (309), 258 states have internal predecessors, (309), 36 states have call successors, (36), 34 states have call predecessors, (36), 36 states have return successors, (38), 34 states have call predecessors, (38), 32 states have call successors, (38) [2022-03-19 07:02:31,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 383 transitions. [2022-03-19 07:02:31,507 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 383 transitions. Word has length 109 [2022-03-19 07:02:31,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:02:31,508 INFO L478 AbstractCegarLoop]: Abstraction has 327 states and 383 transitions. [2022-03-19 07:02:31,508 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 07:02:31,508 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 383 transitions. [2022-03-19 07:02:31,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-19 07:02:31,509 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:31,509 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:31,509 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-19 07:02:31,509 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:31,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:31,509 INFO L85 PathProgramCache]: Analyzing trace with hash -979484737, now seen corresponding path program 1 times [2022-03-19 07:02:31,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:31,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1962097713] [2022-03-19 07:02:31,520 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 07:02:31,520 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 07:02:31,520 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:02:31,520 INFO L85 PathProgramCache]: Analyzing trace with hash -979484737, now seen corresponding path program 2 times [2022-03-19 07:02:31,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:31,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726009081] [2022-03-19 07:02:31,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:31,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:31,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:31,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:02:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:31,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:02:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:31,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:31,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:02:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:31,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:31,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 07:02:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:31,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:02:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:31,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 07:02:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:31,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 07:02:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:31,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-19 07:02:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:31,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:02:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:31,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:31,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:02:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-19 07:02:31,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:31,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726009081] [2022-03-19 07:02:31,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726009081] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:31,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:31,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:02:31,940 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:31,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1962097713] [2022-03-19 07:02:31,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1962097713] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:31,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:31,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:02:31,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610106407] [2022-03-19 07:02:31,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:31,941 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 07:02:31,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:31,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 07:02:31,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-19 07:02:31,942 INFO L87 Difference]: Start difference. First operand 327 states and 383 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 07:02:34,029 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 [] [2022-03-19 07:02:36,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:02:36,761 INFO L93 Difference]: Finished difference Result 425 states and 503 transitions. [2022-03-19 07:02:36,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 07:02:36,762 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 109 [2022-03-19 07:02:36,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:02:36,763 INFO L225 Difference]: With dead ends: 425 [2022-03-19 07:02:36,763 INFO L226 Difference]: Without dead ends: 396 [2022-03-19 07:02:36,764 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-03-19 07:02:36,764 INFO L912 BasicCegarLoop]: 147 mSDtfsCounter, 152 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 78 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-03-19 07:02:36,764 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 514 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 984 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-03-19 07:02:36,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-03-19 07:02:36,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 337. [2022-03-19 07:02:36,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 262 states have (on average 1.2099236641221374) internal successors, (317), 266 states have internal predecessors, (317), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-03-19 07:02:36,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 393 transitions. [2022-03-19 07:02:36,872 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 393 transitions. Word has length 109 [2022-03-19 07:02:36,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:02:36,872 INFO L478 AbstractCegarLoop]: Abstraction has 337 states and 393 transitions. [2022-03-19 07:02:36,872 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 07:02:36,872 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 393 transitions. [2022-03-19 07:02:36,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-19 07:02:36,873 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:36,873 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:36,873 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-19 07:02:36,874 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:36,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:36,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1216749988, now seen corresponding path program 1 times [2022-03-19 07:02:36,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:36,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1709726866] [2022-03-19 07:02:36,875 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 07:02:36,875 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 07:02:36,875 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:02:36,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1216749988, now seen corresponding path program 2 times [2022-03-19 07:02:36,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:36,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172720236] [2022-03-19 07:02:36,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:36,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:37,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:37,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:02:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:37,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:02:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:37,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:37,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:02:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:37,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:37,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 07:02:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:37,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:02:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:37,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 07:02:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:37,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 07:02:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:37,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-19 07:02:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:37,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:02:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:37,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:37,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:02:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:37,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-19 07:02:37,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:37,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172720236] [2022-03-19 07:02:37,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172720236] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:37,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:37,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:02:37,392 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:37,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1709726866] [2022-03-19 07:02:37,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1709726866] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:37,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:37,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:02:37,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65721168] [2022-03-19 07:02:37,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:37,392 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 07:02:37,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:37,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 07:02:37,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-03-19 07:02:37,393 INFO L87 Difference]: Start difference. First operand 337 states and 393 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 6 states have internal predecessors, (78), 4 states have call successors, (18), 12 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-19 07:02:39,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:02:41,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:02:42,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:02:42,055 INFO L93 Difference]: Finished difference Result 426 states and 498 transitions. [2022-03-19 07:02:42,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-19 07:02:42,055 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 6 states have internal predecessors, (78), 4 states have call successors, (18), 12 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 110 [2022-03-19 07:02:42,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:02:42,057 INFO L225 Difference]: With dead ends: 426 [2022-03-19 07:02:42,057 INFO L226 Difference]: Without dead ends: 379 [2022-03-19 07:02:42,058 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=672, Unknown=0, NotChecked=0, Total=930 [2022-03-19 07:02:42,058 INFO L912 BasicCegarLoop]: 128 mSDtfsCounter, 714 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 327 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-03-19 07:02:42,058 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 268 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 344 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-03-19 07:02:42,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-03-19 07:02:42,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 331. [2022-03-19 07:02:42,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 256 states have (on average 1.18359375) internal successors, (303), 260 states have internal predecessors, (303), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-03-19 07:02:42,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 379 transitions. [2022-03-19 07:02:42,200 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 379 transitions. Word has length 110 [2022-03-19 07:02:42,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:02:42,201 INFO L478 AbstractCegarLoop]: Abstraction has 331 states and 379 transitions. [2022-03-19 07:02:42,201 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 6 states have internal predecessors, (78), 4 states have call successors, (18), 12 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-19 07:02:42,201 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 379 transitions. [2022-03-19 07:02:42,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-19 07:02:42,202 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:42,202 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:42,202 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-19 07:02:42,202 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:42,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:42,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1464166070, now seen corresponding path program 1 times [2022-03-19 07:02:42,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:42,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1797454780] [2022-03-19 07:02:42,204 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 07:02:42,204 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 07:02:42,204 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:02:42,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1464166070, now seen corresponding path program 2 times [2022-03-19 07:02:42,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:42,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405415959] [2022-03-19 07:02:42,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:42,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:42,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:42,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:02:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:42,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:02:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:42,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:42,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:02:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:42,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:42,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 07:02:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:42,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:02:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:42,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 07:02:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:42,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 07:02:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:42,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-19 07:02:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:42,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:02:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:42,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:42,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:02:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:42,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-19 07:02:42,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:42,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405415959] [2022-03-19 07:02:42,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405415959] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:42,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:42,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:02:42,671 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:42,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1797454780] [2022-03-19 07:02:42,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1797454780] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:42,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:42,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:02:42,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012238818] [2022-03-19 07:02:42,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:42,672 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 07:02:42,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:42,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 07:02:42,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-19 07:02:42,673 INFO L87 Difference]: Start difference. First operand 331 states and 379 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 07:02:44,737 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 [] [2022-03-19 07:02:46,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:02:46,526 INFO L93 Difference]: Finished difference Result 439 states and 509 transitions. [2022-03-19 07:02:46,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 07:02:46,527 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 110 [2022-03-19 07:02:46,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:02:46,528 INFO L225 Difference]: With dead ends: 439 [2022-03-19 07:02:46,528 INFO L226 Difference]: Without dead ends: 370 [2022-03-19 07:02:46,529 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-03-19 07:02:46,529 INFO L912 BasicCegarLoop]: 147 mSDtfsCounter, 259 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 147 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-03-19 07:02:46,529 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 481 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 821 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-03-19 07:02:46,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-03-19 07:02:46,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 321. [2022-03-19 07:02:46,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 248 states have (on average 1.1653225806451613) internal successors, (289), 252 states have internal predecessors, (289), 36 states have call successors, (36), 34 states have call predecessors, (36), 36 states have return successors, (38), 34 states have call predecessors, (38), 32 states have call successors, (38) [2022-03-19 07:02:46,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 363 transitions. [2022-03-19 07:02:46,635 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 363 transitions. Word has length 110 [2022-03-19 07:02:46,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:02:46,635 INFO L478 AbstractCegarLoop]: Abstraction has 321 states and 363 transitions. [2022-03-19 07:02:46,636 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 07:02:46,636 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 363 transitions. [2022-03-19 07:02:46,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-19 07:02:46,636 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:46,636 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:46,636 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-19 07:02:46,637 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:46,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:46,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1354625370, now seen corresponding path program 1 times [2022-03-19 07:02:46,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:46,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [861166875] [2022-03-19 07:02:46,638 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 07:02:46,638 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 07:02:46,638 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:02:46,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1354625370, now seen corresponding path program 2 times [2022-03-19 07:02:46,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:46,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816930662] [2022-03-19 07:02:46,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:46,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:46,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:46,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:02:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:46,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:02:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:46,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:46,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:02:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:46,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:46,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 07:02:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:46,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:02:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:46,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 07:02:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:46,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 07:02:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:46,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-19 07:02:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:47,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:02:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:47,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:47,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:02:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-19 07:02:47,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:47,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816930662] [2022-03-19 07:02:47,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816930662] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:47,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:47,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:02:47,061 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:47,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [861166875] [2022-03-19 07:02:47,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [861166875] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:47,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:47,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:02:47,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027488574] [2022-03-19 07:02:47,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:47,062 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 07:02:47,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:47,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 07:02:47,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-03-19 07:02:47,062 INFO L87 Difference]: Start difference. First operand 321 states and 363 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-19 07:02:49,133 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 [] [2022-03-19 07:02:50,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:02:50,750 INFO L93 Difference]: Finished difference Result 452 states and 515 transitions. [2022-03-19 07:02:50,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 07:02:50,751 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 110 [2022-03-19 07:02:50,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:02:50,752 INFO L225 Difference]: With dead ends: 452 [2022-03-19 07:02:50,752 INFO L226 Difference]: Without dead ends: 386 [2022-03-19 07:02:50,753 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-03-19 07:02:50,753 INFO L912 BasicCegarLoop]: 135 mSDtfsCounter, 187 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 85 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-03-19 07:02:50,753 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 340 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 520 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-03-19 07:02:50,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-03-19 07:02:50,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 338. [2022-03-19 07:02:50,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 262 states have (on average 1.1450381679389312) internal successors, (300), 266 states have internal predecessors, (300), 36 states have call successors, (36), 35 states have call predecessors, (36), 39 states have return successors, (41), 36 states have call predecessors, (41), 33 states have call successors, (41) [2022-03-19 07:02:50,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 377 transitions. [2022-03-19 07:02:50,912 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 377 transitions. Word has length 110 [2022-03-19 07:02:50,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:02:50,913 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 377 transitions. [2022-03-19 07:02:50,913 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-19 07:02:50,913 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 377 transitions. [2022-03-19 07:02:50,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-03-19 07:02:50,914 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:50,914 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:50,914 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-19 07:02:50,914 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:50,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:50,915 INFO L85 PathProgramCache]: Analyzing trace with hash 820803447, now seen corresponding path program 1 times [2022-03-19 07:02:50,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:50,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1870387017] [2022-03-19 07:02:50,916 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 07:02:50,916 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 07:02:50,916 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:02:50,916 INFO L85 PathProgramCache]: Analyzing trace with hash 820803447, now seen corresponding path program 2 times [2022-03-19 07:02:50,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:50,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280759303] [2022-03-19 07:02:50,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:50,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:51,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:51,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:02:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:51,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:02:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:51,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:51,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:02:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:51,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:51,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 07:02:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:51,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:02:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:51,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 07:02:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:51,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 07:02:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:51,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-19 07:02:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:51,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:02:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:51,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:51,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:02:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:51,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-19 07:02:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:51,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:02:51,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:51,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280759303] [2022-03-19 07:02:51,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280759303] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 07:02:51,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126787020] [2022-03-19 07:02:51,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 07:02:51,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 07:02:51,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 07:02:51,748 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) [2022-03-19 07:02:51,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-19 07:02:52,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 07:02:52,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 07:02:52,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-19 07:02:52,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 07:02:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-19 07:02:53,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 07:02:53,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126787020] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:53,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 07:02:53,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 16 [2022-03-19 07:02:53,047 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:53,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1870387017] [2022-03-19 07:02:53,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1870387017] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:53,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:53,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 07:02:53,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192224560] [2022-03-19 07:02:53,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:53,048 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 07:02:53,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:53,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 07:02:53,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-03-19 07:02:53,049 INFO L87 Difference]: Start difference. First operand 338 states and 377 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-03-19 07:02:54,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:02:54,129 INFO L93 Difference]: Finished difference Result 378 states and 421 transitions. [2022-03-19 07:02:54,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 07:02:54,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2022-03-19 07:02:54,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:02:54,130 INFO L225 Difference]: With dead ends: 378 [2022-03-19 07:02:54,130 INFO L226 Difference]: Without dead ends: 313 [2022-03-19 07:02:54,131 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-03-19 07:02:54,131 INFO L912 BasicCegarLoop]: 159 mSDtfsCounter, 71 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-19 07:02:54,131 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 308 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-19 07:02:54,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-03-19 07:02:54,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 291. [2022-03-19 07:02:54,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 223 states have (on average 1.1210762331838564) internal successors, (250), 225 states have internal predecessors, (250), 33 states have call successors, (33), 33 states have call predecessors, (33), 34 states have return successors, (35), 32 states have call predecessors, (35), 31 states have call successors, (35) [2022-03-19 07:02:54,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 318 transitions. [2022-03-19 07:02:54,229 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 318 transitions. Word has length 120 [2022-03-19 07:02:54,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:02:54,229 INFO L478 AbstractCegarLoop]: Abstraction has 291 states and 318 transitions. [2022-03-19 07:02:54,229 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-03-19 07:02:54,229 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 318 transitions. [2022-03-19 07:02:54,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-03-19 07:02:54,230 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:54,230 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:54,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-19 07:02:54,434 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,SelfDestructingSolverStorable34 [2022-03-19 07:02:54,434 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:54,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:54,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1988173063, now seen corresponding path program 1 times [2022-03-19 07:02:54,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:54,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1704423676] [2022-03-19 07:02:54,436 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 07:02:54,436 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 07:02:54,436 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:02:54,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1988173063, now seen corresponding path program 2 times [2022-03-19 07:02:54,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:54,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506008641] [2022-03-19 07:02:54,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:54,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:54,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:54,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:02:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:54,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:02:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:54,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:54,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:02:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:54,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:54,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 07:02:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:54,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:02:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:54,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 07:02:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:54,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 07:02:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:54,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 07:02:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:54,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:02:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:54,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:02:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:54,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:54,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:02:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:54,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-19 07:02:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-19 07:02:54,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:54,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506008641] [2022-03-19 07:02:54,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506008641] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:54,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:54,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-19 07:02:54,977 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:54,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1704423676] [2022-03-19 07:02:54,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1704423676] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:54,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:54,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-19 07:02:54,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319887137] [2022-03-19 07:02:54,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:54,977 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-19 07:02:54,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:54,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-19 07:02:54,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-03-19 07:02:54,978 INFO L87 Difference]: Start difference. First operand 291 states and 318 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 7 states have internal predecessors, (92), 3 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-19 07:02:57,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:02:58,866 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:03:01,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:03:01,620 INFO L93 Difference]: Finished difference Result 345 states and 383 transitions. [2022-03-19 07:03:01,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 07:03:01,621 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 7 states have internal predecessors, (92), 3 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 126 [2022-03-19 07:03:01,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:03:01,622 INFO L225 Difference]: With dead ends: 345 [2022-03-19 07:03:01,622 INFO L226 Difference]: Without dead ends: 303 [2022-03-19 07:03:01,622 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=675, Unknown=0, NotChecked=0, Total=812 [2022-03-19 07:03:01,623 INFO L912 BasicCegarLoop]: 143 mSDtfsCounter, 300 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 157 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-03-19 07:03:01,623 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 616 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1184 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-03-19 07:03:01,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-03-19 07:03:01,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 273. [2022-03-19 07:03:01,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 207 states have (on average 1.1207729468599035) internal successors, (232), 209 states have internal predecessors, (232), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (33), 30 states have call predecessors, (33), 31 states have call successors, (33) [2022-03-19 07:03:01,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 298 transitions. [2022-03-19 07:03:01,732 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 298 transitions. Word has length 126 [2022-03-19 07:03:01,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:03:01,732 INFO L478 AbstractCegarLoop]: Abstraction has 273 states and 298 transitions. [2022-03-19 07:03:01,732 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 7 states have internal predecessors, (92), 3 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-19 07:03:01,733 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 298 transitions. [2022-03-19 07:03:01,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-03-19 07:03:01,733 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:03:01,733 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:03:01,734 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-19 07:03:01,734 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:03:01,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:03:01,734 INFO L85 PathProgramCache]: Analyzing trace with hash -375187371, now seen corresponding path program 1 times [2022-03-19 07:03:01,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:01,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1174066553] [2022-03-19 07:03:01,735 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 07:03:01,736 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 07:03:01,736 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:03:01,736 INFO L85 PathProgramCache]: Analyzing trace with hash -375187371, now seen corresponding path program 2 times [2022-03-19 07:03:01,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:03:01,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064927173] [2022-03-19 07:03:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:03:01,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:03:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:01,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:03:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:01,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:03:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:01,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:03:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:01,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:03:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:01,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:03:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:02,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:03:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:02,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 07:03:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:02,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:03:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:02,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 07:03:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:02,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 07:03:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 07:03:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:02,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:03:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:02,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:03:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:02,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:03:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:02,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:03:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:02,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-19 07:03:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-19 07:03:02,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:03:02,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064927173] [2022-03-19 07:03:02,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064927173] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:03:02,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:03:02,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 07:03:02,177 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:03:02,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1174066553] [2022-03-19 07:03:02,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1174066553] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:03:02,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:03:02,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 07:03:02,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195534112] [2022-03-19 07:03:02,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:03:02,178 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 07:03:02,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:02,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 07:03:02,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-03-19 07:03:02,178 INFO L87 Difference]: Start difference. First operand 273 states and 298 transitions. Second operand has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-19 07:03:04,244 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 [] [2022-03-19 07:03:06,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:03:06,221 INFO L93 Difference]: Finished difference Result 323 states and 358 transitions. [2022-03-19 07:03:06,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 07:03:06,222 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 126 [2022-03-19 07:03:06,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:03:06,223 INFO L225 Difference]: With dead ends: 323 [2022-03-19 07:03:06,223 INFO L226 Difference]: Without dead ends: 303 [2022-03-19 07:03:06,223 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-03-19 07:03:06,224 INFO L912 BasicCegarLoop]: 146 mSDtfsCounter, 258 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 135 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-19 07:03:06,224 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 508 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 772 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-03-19 07:03:06,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-03-19 07:03:06,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 271. [2022-03-19 07:03:06,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 205 states have (on average 1.1121951219512196) internal successors, (228), 207 states have internal predecessors, (228), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (33), 30 states have call predecessors, (33), 31 states have call successors, (33) [2022-03-19 07:03:06,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 294 transitions. [2022-03-19 07:03:06,311 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 294 transitions. Word has length 126 [2022-03-19 07:03:06,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:03:06,312 INFO L478 AbstractCegarLoop]: Abstraction has 271 states and 294 transitions. [2022-03-19 07:03:06,312 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-19 07:03:06,312 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 294 transitions. [2022-03-19 07:03:06,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-03-19 07:03:06,313 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:03:06,313 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:03:06,313 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-19 07:03:06,313 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:03:06,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:03:06,313 INFO L85 PathProgramCache]: Analyzing trace with hash -347088914, now seen corresponding path program 1 times [2022-03-19 07:03:06,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:06,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [643122096] [2022-03-19 07:03:06,314 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 07:03:06,315 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 07:03:06,315 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:03:06,315 INFO L85 PathProgramCache]: Analyzing trace with hash -347088914, now seen corresponding path program 2 times [2022-03-19 07:03:06,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:03:06,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144705097] [2022-03-19 07:03:06,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:03:06,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:03:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:03:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:03:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:03:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:03:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:03:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:03:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 07:03:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:03:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 07:03:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 07:03:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 07:03:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:03:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:03:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:03:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:03:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-19 07:03:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-19 07:03:06,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:03:06,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144705097] [2022-03-19 07:03:06,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144705097] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:03:06,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:03:06,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 07:03:06,778 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:03:06,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [643122096] [2022-03-19 07:03:06,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [643122096] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:03:06,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:03:06,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 07:03:06,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101029147] [2022-03-19 07:03:06,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:03:06,778 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 07:03:06,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:06,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 07:03:06,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-03-19 07:03:06,779 INFO L87 Difference]: Start difference. First operand 271 states and 294 transitions. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-19 07:03:08,845 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 [] [2022-03-19 07:03:10,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:03:10,877 INFO L93 Difference]: Finished difference Result 323 states and 354 transitions. [2022-03-19 07:03:10,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 07:03:10,877 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2022-03-19 07:03:10,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:03:10,878 INFO L225 Difference]: With dead ends: 323 [2022-03-19 07:03:10,878 INFO L226 Difference]: Without dead ends: 253 [2022-03-19 07:03:10,878 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-03-19 07:03:10,879 INFO L912 BasicCegarLoop]: 123 mSDtfsCounter, 242 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 144 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-19 07:03:10,879 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 380 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 666 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-03-19 07:03:10,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-03-19 07:03:10,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 233. [2022-03-19 07:03:10,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 173 states have (on average 1.0867052023121386) internal successors, (188), 173 states have internal predecessors, (188), 31 states have call successors, (31), 31 states have call predecessors, (31), 28 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-03-19 07:03:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 248 transitions. [2022-03-19 07:03:10,990 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 248 transitions. Word has length 127 [2022-03-19 07:03:10,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:03:10,990 INFO L478 AbstractCegarLoop]: Abstraction has 233 states and 248 transitions. [2022-03-19 07:03:10,991 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-19 07:03:10,991 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 248 transitions. [2022-03-19 07:03:10,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-03-19 07:03:10,991 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:03:10,992 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:03:10,992 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-19 07:03:10,992 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:03:10,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:03:10,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1600651777, now seen corresponding path program 1 times [2022-03-19 07:03:10,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:10,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2047160601] [2022-03-19 07:03:10,993 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 07:03:10,993 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 07:03:10,994 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:03:10,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1600651777, now seen corresponding path program 2 times [2022-03-19 07:03:10,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:03:10,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432084191] [2022-03-19 07:03:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:03:10,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:03:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:11,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:03:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:11,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:03:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:11,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:03:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:11,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:03:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:11,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:03:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:11,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:03:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:11,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 07:03:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:11,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:03:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:11,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 07:03:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:11,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 07:03:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:11,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 07:03:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:11,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:03:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:11,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:03:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:11,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:03:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:11,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:03:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:11,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 07:03:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:11,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-19 07:03:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:11,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:03:11,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:03:11,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432084191] [2022-03-19 07:03:11,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432084191] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 07:03:11,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064567159] [2022-03-19 07:03:11,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 07:03:11,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 07:03:11,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 07:03:11,736 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) [2022-03-19 07:03:11,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-19 07:03:13,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 07:03:13,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 07:03:13,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-19 07:03:13,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 07:03:13,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-19 07:03:13,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 07:03:13,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064567159] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:03:13,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 07:03:13,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2022-03-19 07:03:13,340 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:03:13,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2047160601] [2022-03-19 07:03:13,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2047160601] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:03:13,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:03:13,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 07:03:13,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118160868] [2022-03-19 07:03:13,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:03:13,341 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 07:03:13,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:13,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 07:03:13,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-03-19 07:03:13,341 INFO L87 Difference]: Start difference. First operand 233 states and 248 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-03-19 07:03:13,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:03:13,510 INFO L93 Difference]: Finished difference Result 361 states and 386 transitions. [2022-03-19 07:03:13,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 07:03:13,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2022-03-19 07:03:13,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:03:13,512 INFO L225 Difference]: With dead ends: 361 [2022-03-19 07:03:13,512 INFO L226 Difference]: Without dead ends: 235 [2022-03-19 07:03:13,512 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-03-19 07:03:13,513 INFO L912 BasicCegarLoop]: 144 mSDtfsCounter, 3 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 07:03:13,513 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 430 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 07:03:13,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-03-19 07:03:13,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2022-03-19 07:03:13,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 175 states have (on average 1.0857142857142856) internal successors, (190), 175 states have internal predecessors, (190), 31 states have call successors, (31), 31 states have call predecessors, (31), 28 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-03-19 07:03:13,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 250 transitions. [2022-03-19 07:03:13,631 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 250 transitions. Word has length 136 [2022-03-19 07:03:13,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:03:13,632 INFO L478 AbstractCegarLoop]: Abstraction has 235 states and 250 transitions. [2022-03-19 07:03:13,632 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-03-19 07:03:13,632 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 250 transitions. [2022-03-19 07:03:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-03-19 07:03:13,633 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:03:13,633 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:03:13,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-19 07:03:13,855 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 07:03:13,855 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:03:13,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:03:13,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1917947804, now seen corresponding path program 1 times [2022-03-19 07:03:13,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:13,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [147482828] [2022-03-19 07:03:13,857 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 07:03:13,857 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 07:03:13,857 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:03:13,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1917947804, now seen corresponding path program 2 times [2022-03-19 07:03:13,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:03:13,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354404044] [2022-03-19 07:03:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:03:13,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:03:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:14,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:03:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:14,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:03:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:14,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:03:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:14,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:03:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:14,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:03:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:14,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:03:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:14,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 07:03:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:14,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:03:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:14,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 07:03:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:14,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 07:03:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:14,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 07:03:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:14,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-19 07:03:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:14,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:03:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:14,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:03:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:14,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:03:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:14,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-19 07:03:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:14,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-19 07:03:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:14,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-19 07:03:14,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:03:14,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354404044] [2022-03-19 07:03:14,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354404044] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 07:03:14,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552627555] [2022-03-19 07:03:14,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 07:03:14,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 07:03:14,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 07:03:14,492 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) [2022-03-19 07:03:14,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-19 07:03:15,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 07:03:15,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 07:03:15,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-19 07:03:15,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 07:03:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-19 07:03:15,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 07:03:15,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552627555] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:03:15,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 07:03:15,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2022-03-19 07:03:15,929 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:03:15,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [147482828] [2022-03-19 07:03:15,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [147482828] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:03:15,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:03:15,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 07:03:15,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819274097] [2022-03-19 07:03:15,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:03:15,929 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 07:03:15,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:15,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 07:03:15,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-03-19 07:03:15,930 INFO L87 Difference]: Start difference. First operand 235 states and 250 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-03-19 07:03:16,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:03:16,094 INFO L93 Difference]: Finished difference Result 355 states and 376 transitions. [2022-03-19 07:03:16,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 07:03:16,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 137 [2022-03-19 07:03:16,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:03:16,096 INFO L225 Difference]: With dead ends: 355 [2022-03-19 07:03:16,096 INFO L226 Difference]: Without dead ends: 237 [2022-03-19 07:03:16,096 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-03-19 07:03:16,097 INFO L912 BasicCegarLoop]: 145 mSDtfsCounter, 2 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 07:03:16,097 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 431 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 07:03:16,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-03-19 07:03:16,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-03-19 07:03:16,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 177 states have (on average 1.0847457627118644) internal successors, (192), 177 states have internal predecessors, (192), 31 states have call successors, (31), 31 states have call predecessors, (31), 28 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-03-19 07:03:16,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 252 transitions. [2022-03-19 07:03:16,209 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 252 transitions. Word has length 137 [2022-03-19 07:03:16,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:03:16,209 INFO L478 AbstractCegarLoop]: Abstraction has 237 states and 252 transitions. [2022-03-19 07:03:16,209 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-03-19 07:03:16,209 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 252 transitions. [2022-03-19 07:03:16,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-03-19 07:03:16,210 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:03:16,210 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:03:16,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-19 07:03:16,435 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-19 07:03:16,435 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:03:16,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:03:16,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1381815261, now seen corresponding path program 1 times [2022-03-19 07:03:16,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:16,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [492170512] [2022-03-19 07:03:16,437 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 07:03:16,437 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 07:03:16,437 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:03:16,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1381815261, now seen corresponding path program 2 times [2022-03-19 07:03:16,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:03:16,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131936042] [2022-03-19 07:03:16,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:03:16,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:03:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:16,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:03:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:16,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:03:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:16,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:03:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:16,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:03:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:16,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:03:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:16,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:03:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:16,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 07:03:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:17,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:03:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:17,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 07:03:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:17,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 07:03:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:17,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 07:03:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:17,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 07:03:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:17,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:03:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:17,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:03:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:17,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:03:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:17,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-19 07:03:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:17,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-19 07:03:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:17,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-19 07:03:17,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:03:17,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131936042] [2022-03-19 07:03:17,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131936042] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 07:03:17,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460671498] [2022-03-19 07:03:17,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 07:03:17,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 07:03:17,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 07:03:17,242 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) [2022-03-19 07:03:17,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process