/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-b030c9e [2022-03-20 17:25:52,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 17:25:52,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 17:25:52,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 17:25:52,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 17:25:52,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 17:25:52,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 17:25:52,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 17:25:52,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 17:25:52,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 17:25:52,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 17:25:52,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 17:25:52,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 17:25:52,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 17:25:52,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 17:25:52,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 17:25:52,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 17:25:52,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 17:25:52,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 17:25:52,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 17:25:52,832 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 17:25:52,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 17:25:52,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 17:25:52,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 17:25:52,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 17:25:52,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 17:25:52,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 17:25:52,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 17:25:52,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 17:25:52,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-20 17:25:52,871 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 17:25:52,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 17:25:52,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 17:25:52,874 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 17:25:52,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 17:25:52,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 17:25:52,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 17:25:52,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 17:25:52,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 17:25:52,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 17:25:52,876 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 17:25:52,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 17:25:52,876 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 17:25:52,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 17:25:52,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 17:25:52,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 17:25:52,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 17:25:52,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 17:25:52,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 17:25:52,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 17:25:52,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 17:25:52,877 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 17:25:52,877 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 17:25:52,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 17:25:52,878 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-20 17:25:52,878 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 17:25:53,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 17:25:53,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 17:25:53,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 17:25:53,099 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 17:25:53,099 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 17:25:53,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c [2022-03-20 17:25:53,154 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fabc70120/7e157d89308c43aa84c8ea1b4e41304a/FLAG4f389d632 [2022-03-20 17:25:53,655 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 17:25:53,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c [2022-03-20 17:25:53,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fabc70120/7e157d89308c43aa84c8ea1b4e41304a/FLAG4f389d632 [2022-03-20 17:25:54,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fabc70120/7e157d89308c43aa84c8ea1b4e41304a [2022-03-20 17:25:54,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 17:25:54,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 17:25:54,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 17:25:54,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 17:25:54,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 17:25:54,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:25:54" (1/1) ... [2022-03-20 17:25:54,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2daaa42e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:25:54, skipping insertion in model container [2022-03-20 17:25:54,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:25:54" (1/1) ... [2022-03-20 17:25:54,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 17:25:54,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 17:25:54,669 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] [2022-03-20 17:25:54,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 17:25:54,862 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 17:25:54,925 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] [2022-03-20 17:25:55,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 17:25:55,080 INFO L208 MainTranslator]: Completed translation [2022-03-20 17:25:55,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:25:55 WrapperNode [2022-03-20 17:25:55,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 17:25:55,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 17:25:55,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 17:25:55,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 17:25:55,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:25:55" (1/1) ... [2022-03-20 17:25:55,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:25:55" (1/1) ... [2022-03-20 17:25:55,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:25:55" (1/1) ... [2022-03-20 17:25:55,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:25:55" (1/1) ... [2022-03-20 17:25:55,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:25:55" (1/1) ... [2022-03-20 17:25:55,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:25:55" (1/1) ... [2022-03-20 17:25:55,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:25:55" (1/1) ... [2022-03-20 17:25:55,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 17:25:55,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 17:25:55,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 17:25:55,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 17:25:55,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:25:55" (1/1) ... [2022-03-20 17:25:55,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 17:25:55,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:25:55,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 17:25:55,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 17:25:55,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 17:25:55,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 17:25:55,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PVOID~0~X~$Pointer$~X~$Pointer$~X~~PBOOLEAN~0~TO~~NTSTATUS~0 [2022-03-20 17:25:55,296 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 [2022-03-20 17:25:55,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PVOID~0~X~~PVOID~0~X~~PVOID~0~TO~VOID [2022-03-20 17:25:55,296 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 17:25:55,296 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 17:25:55,296 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-03-20 17:25:55,296 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-03-20 17:25:55,296 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_IoCtl [2022-03-20 17:25:55,296 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-20 17:25:55,296 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-20 17:25:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-03-20 17:25:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_AddDevice [2022-03-20 17:25:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-03-20 17:25:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-03-20 17:25:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-03-20 17:25:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2022-03-20 17:25:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-03-20 17:25:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2022-03-20 17:25:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InitializationRoutine [2022-03-20 17:25:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_IsrHook [2022-03-20 17:25:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_ServiceCallback [2022-03-20 17:25:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Unload [2022-03-20 17:25:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-20 17:25:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 17:25:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-03-20 17:25:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-03-20 17:25:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-03-20 17:25:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-03-20 17:25:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-03-20 17:25:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-03-20 17:25:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-03-20 17:25:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-03-20 17:25:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-03-20 17:25:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-03-20 17:25:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-20 17:25:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-03-20 17:25:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-03-20 17:25:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-03-20 17:25:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-20 17:25:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-03-20 17:25:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-03-20 17:25:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-03-20 17:25:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-03-20 17:25:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-20 17:25:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-20 17:25:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-03-20 17:25:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-20 17:25:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-03-20 17:25:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-20 17:25:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-20 17:25:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-20 17:25:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-03-20 17:25:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-03-20 17:25:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-03-20 17:25:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-03-20 17:25:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-03-20 17:25:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-03-20 17:25:55,301 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-03-20 17:25:55,301 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-20 17:25:55,301 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-20 17:25:55,301 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-03-20 17:25:55,301 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-03-20 17:25:55,301 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-03-20 17:25:55,301 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-03-20 17:25:55,301 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-03-20 17:25:55,301 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-03-20 17:25:55,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-20 17:25:55,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-03-20 17:25:55,301 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-20 17:25:55,301 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-03-20 17:25:55,302 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-20 17:25:55,302 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-03-20 17:25:55,302 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-03-20 17:25:55,302 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-03-20 17:25:55,302 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-03-20 17:25:55,302 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-03-20 17:25:55,302 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-03-20 17:25:55,302 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-03-20 17:25:55,302 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-03-20 17:25:55,303 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-03-20 17:25:55,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-20 17:25:55,304 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-03-20 17:25:55,304 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-03-20 17:25:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 17:25:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 17:25:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 17:25:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 17:25:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 17:25:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 17:25:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-20 17:25:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-03-20 17:25:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 17:25:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-20 17:25:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-03-20 17:25:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-03-20 17:25:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-03-20 17:25:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-03-20 17:25:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-03-20 17:25:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-03-20 17:25:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-03-20 17:25:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-03-20 17:25:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-03-20 17:25:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-03-20 17:25:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-03-20 17:25:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 17:25:55,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 17:25:55,307 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-03-20 17:25:55,307 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-03-20 17:25:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-20 17:25:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-03-20 17:25:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-03-20 17:25:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-03-20 17:25:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-20 17:25:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-03-20 17:25:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-03-20 17:25:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-03-20 17:25:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-03-20 17:25:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-03-20 17:25:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-03-20 17:25:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-03-20 17:25:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-03-20 17:25:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-03-20 17:25:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-03-20 17:25:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-03-20 17:25:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-03-20 17:25:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-03-20 17:25:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-03-20 17:25:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-03-20 17:25:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-20 17:25:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-03-20 17:25:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-03-20 17:25:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-03-20 17:25:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-03-20 17:25:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-20 17:25:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-20 17:25:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-20 17:25:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-03-20 17:25:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-03-20 17:25:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-03-20 17:25:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-20 17:25:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-03-20 17:25:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-03-20 17:25:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-03-20 17:25:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-03-20 17:25:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-20 17:25:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-03-20 17:25:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-03-20 17:25:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-20 17:25:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-20 17:25:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-20 17:25:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-03-20 17:25:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-20 17:25:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-03-20 17:25:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-20 17:25:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_AddDevice [2022-03-20 17:25:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-03-20 17:25:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-03-20 17:25:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2022-03-20 17:25:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_IoCtl [2022-03-20 17:25:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-03-20 17:25:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2022-03-20 17:25:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InitializationRoutine [2022-03-20 17:25:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_IsrHook [2022-03-20 17:25:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_ServiceCallback [2022-03-20 17:25:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Unload [2022-03-20 17:25:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-03-20 17:25:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-20 17:25:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-20 17:25:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-20 17:25:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-20 17:25:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-20 17:25:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-20 17:25:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 17:25:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-03-20 17:25:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-03-20 17:25:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-03-20 17:25:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PVOID~0~X~$Pointer$~X~$Pointer$~X~~PBOOLEAN~0~TO~~NTSTATUS~0 [2022-03-20 17:25:55,328 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 [2022-03-20 17:25:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PVOID~0~X~~PVOID~0~X~~PVOID~0~TO~VOID [2022-03-20 17:25:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-20 17:25:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2022-03-20 17:25:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 17:25:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-20 17:25:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-20 17:25:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-03-20 17:25:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 17:25:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 17:25:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 17:25:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-20 17:25:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-20 17:25:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-20 17:25:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-20 17:25:55,763 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 17:25:55,765 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 17:25:55,797 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:55,826 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:25:55,826 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:25:55,827 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:55,833 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:25:55,833 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:25:55,845 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:55,851 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:25:55,851 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:25:55,851 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:55,861 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:25:55,861 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:25:55,865 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:55,872 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:25:55,872 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:25:56,120 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:56,131 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:25:56,131 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:25:56,132 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:56,147 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:25:56,148 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:25:56,148 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:56,170 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:25:56,170 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:25:56,191 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:56,196 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:25:56,196 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:25:56,197 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:56,201 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:25:56,201 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:25:56,201 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:56,209 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:25:56,209 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:25:56,235 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:56,240 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:25:56,240 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:25:56,240 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:56,244 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:25:56,244 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:25:56,254 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:56,411 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-03-20 17:25:56,411 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-03-20 17:25:56,422 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:56,438 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-20 17:25:56,438 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-20 17:25:56,450 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:56,454 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:25:56,454 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:25:56,457 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:57,590 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-20 17:25:57,591 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-20 17:25:57,717 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:57,721 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:25:57,722 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:25:57,784 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:57,793 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:25:57,793 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:25:57,806 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:57,824 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-20 17:25:57,824 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-20 17:25:57,831 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:57,841 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-20 17:25:57,842 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-20 17:25:57,874 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:57,879 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:25:57,879 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:25:57,884 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:57,925 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-20 17:25:57,925 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-20 17:25:57,928 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:25:57,935 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:25:57,936 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:25:57,966 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 17:25:57,976 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 17:25:57,977 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-20 17:25:57,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:25:57 BoogieIcfgContainer [2022-03-20 17:25:57,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 17:25:57,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 17:25:57,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 17:25:57,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 17:25:57,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 05:25:54" (1/3) ... [2022-03-20 17:25:57,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a4ff51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:25:57, skipping insertion in model container [2022-03-20 17:25:57,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:25:55" (2/3) ... [2022-03-20 17:25:57,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a4ff51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:25:57, skipping insertion in model container [2022-03-20 17:25:57,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:25:57" (3/3) ... [2022-03-20 17:25:57,985 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr.i.cil-2.c [2022-03-20 17:25:57,989 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 17:25:57,989 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 17:25:58,024 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 17:25:58,030 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 17:25:58,030 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 17:25:58,046 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) [2022-03-20 17:25:58,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-20 17:25:58,053 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:25:58,053 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:25:58,054 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:25:58,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:25:58,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1774662017, now seen corresponding path program 1 times [2022-03-20 17:25:58,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:25:58,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1664292414] [2022-03-20 17:25:58,073 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:25:58,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1774662017, now seen corresponding path program 2 times [2022-03-20 17:25:58,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:25:58,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5342158] [2022-03-20 17:25:58,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:25:58,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:25:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:25:58,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:25:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:25:58,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:25:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:25:58,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:25:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:25:58,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:25:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:25:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:25:58,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:25:58,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5342158] [2022-03-20 17:25:58,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5342158] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:25:58,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:25:58,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:25:58,732 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:25:58,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1664292414] [2022-03-20 17:25:58,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1664292414] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:25:58,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:25:58,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:25:58,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463059517] [2022-03-20 17:25:58,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:25:58,737 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:25:58,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:25:58,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:25:58,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:25:58,769 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) [2022-03-20 17:26:00,859 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:26:02,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:26:02,666 INFO L93 Difference]: Finished difference Result 643 states and 953 transitions. [2022-03-20 17:26:02,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:26:02,672 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 [2022-03-20 17:26:02,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:26:02,690 INFO L225 Difference]: With dead ends: 643 [2022-03-20 17:26:02,691 INFO L226 Difference]: Without dead ends: 343 [2022-03-20 17:26:02,697 INFO L912 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 [2022-03-20 17:26:02,701 INFO L913 BasicCegarLoop]: 335 mSDtfsCounter, 597 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 220 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s 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, 3.7s IncrementalHoareTripleChecker+Time [2022-03-20 17:26:02,702 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 463 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 379 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-03-20 17:26:02,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-03-20 17:26:02,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 299. [2022-03-20 17:26:02,798 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) [2022-03-20 17:26:02,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 407 transitions. [2022-03-20 17:26:02,803 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 407 transitions. Word has length 31 [2022-03-20 17:26:02,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:26:02,803 INFO L478 AbstractCegarLoop]: Abstraction has 299 states and 407 transitions. [2022-03-20 17:26:02,803 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) [2022-03-20 17:26:02,803 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 407 transitions. [2022-03-20 17:26:02,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-20 17:26:02,804 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:26:02,804 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:26:02,804 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 17:26:02,805 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:26:02,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:26:02,805 INFO L85 PathProgramCache]: Analyzing trace with hash 186314115, now seen corresponding path program 1 times [2022-03-20 17:26:02,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:02,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [373940999] [2022-03-20 17:26:02,806 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:26:02,806 INFO L85 PathProgramCache]: Analyzing trace with hash 186314115, now seen corresponding path program 2 times [2022-03-20 17:26:02,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:26:02,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748905714] [2022-03-20 17:26:02,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:26:02,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:26:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:03,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:26:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:03,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:26:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:03,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:26:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:03,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:26:03,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:26:03,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748905714] [2022-03-20 17:26:03,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748905714] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:03,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:03,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:26:03,202 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:26:03,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [373940999] [2022-03-20 17:26:03,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [373940999] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:03,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:03,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:26:03,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740838645] [2022-03-20 17:26:03,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:26:03,203 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 17:26:03,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:03,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 17:26:03,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-20 17:26:03,204 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) [2022-03-20 17:26:05,290 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:26:08,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:26:08,481 INFO L93 Difference]: Finished difference Result 360 states and 492 transitions. [2022-03-20 17:26:08,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:26:08,485 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 [2022-03-20 17:26:08,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:26:08,488 INFO L225 Difference]: With dead ends: 360 [2022-03-20 17:26:08,488 INFO L226 Difference]: Without dead ends: 343 [2022-03-20 17:26:08,489 INFO L912 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 [2022-03-20 17:26:08,489 INFO L913 BasicCegarLoop]: 314 mSDtfsCounter, 395 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 148 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:26:08,490 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 683 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1531 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-03-20 17:26:08,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-03-20 17:26:08,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 299. [2022-03-20 17:26:08,529 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) [2022-03-20 17:26:08,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 406 transitions. [2022-03-20 17:26:08,531 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 406 transitions. Word has length 31 [2022-03-20 17:26:08,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:26:08,531 INFO L478 AbstractCegarLoop]: Abstraction has 299 states and 406 transitions. [2022-03-20 17:26:08,531 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) [2022-03-20 17:26:08,531 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 406 transitions. [2022-03-20 17:26:08,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-20 17:26:08,533 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:26:08,533 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:26:08,533 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 17:26:08,534 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:26:08,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:26:08,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1201516382, now seen corresponding path program 1 times [2022-03-20 17:26:08,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:08,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [827623294] [2022-03-20 17:26:08,535 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:26:08,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1201516382, now seen corresponding path program 2 times [2022-03-20 17:26:08,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:26:08,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134430171] [2022-03-20 17:26:08,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:26:08,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:26:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:08,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:26:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:08,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:26:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:08,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:26:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:08,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:08,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:26:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:08,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:08,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:26:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:26:08,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:26:08,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134430171] [2022-03-20 17:26:08,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134430171] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:08,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:08,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:26:08,913 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:26:08,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [827623294] [2022-03-20 17:26:08,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [827623294] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:08,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:08,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:26:08,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708329236] [2022-03-20 17:26:08,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:26:08,914 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 17:26:08,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:08,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 17:26:08,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:26:08,915 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) [2022-03-20 17:26:10,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:26:14,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:26:14,797 INFO L93 Difference]: Finished difference Result 599 states and 829 transitions. [2022-03-20 17:26:14,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 17:26:14,798 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 [2022-03-20 17:26:14,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:26:14,801 INFO L225 Difference]: With dead ends: 599 [2022-03-20 17:26:14,801 INFO L226 Difference]: Without dead ends: 348 [2022-03-20 17:26:14,802 INFO L912 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 [2022-03-20 17:26:14,803 INFO L913 BasicCegarLoop]: 312 mSDtfsCounter, 609 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 1671 mSolverCounterSat, 252 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 1671 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-03-20 17:26:14,803 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 792 Invalid, 1924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 1671 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-03-20 17:26:14,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-03-20 17:26:14,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 303. [2022-03-20 17:26:14,843 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) [2022-03-20 17:26:14,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 410 transitions. [2022-03-20 17:26:14,845 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 410 transitions. Word has length 53 [2022-03-20 17:26:14,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:26:14,845 INFO L478 AbstractCegarLoop]: Abstraction has 303 states and 410 transitions. [2022-03-20 17:26:14,845 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) [2022-03-20 17:26:14,846 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 410 transitions. [2022-03-20 17:26:14,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-20 17:26:14,847 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:26:14,847 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:26:14,848 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 17:26:14,848 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:26:14,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:26:14,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1078281185, now seen corresponding path program 1 times [2022-03-20 17:26:14,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:14,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2104966521] [2022-03-20 17:26:14,849 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:26:14,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1078281185, now seen corresponding path program 2 times [2022-03-20 17:26:14,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:26:14,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281778236] [2022-03-20 17:26:14,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:26:14,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:26:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:15,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:26:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:26:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:15,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:26:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:15,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:15,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:26:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:15,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:15,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:26:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:26:15,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:26:15,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281778236] [2022-03-20 17:26:15,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281778236] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:15,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:15,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:26:15,169 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:26:15,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2104966521] [2022-03-20 17:26:15,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2104966521] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:15,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:15,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:26:15,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405535218] [2022-03-20 17:26:15,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:26:15,170 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 17:26:15,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:15,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 17:26:15,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-20 17:26:15,171 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) [2022-03-20 17:26:17,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:26:18,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:26:18,998 INFO L93 Difference]: Finished difference Result 492 states and 667 transitions. [2022-03-20 17:26:18,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 17:26:18,998 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 [2022-03-20 17:26:18,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:26:19,001 INFO L225 Difference]: With dead ends: 492 [2022-03-20 17:26:19,001 INFO L226 Difference]: Without dead ends: 431 [2022-03-20 17:26:19,001 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:26:19,003 INFO L913 BasicCegarLoop]: 364 mSDtfsCounter, 864 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 299 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s 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, 3.5s IncrementalHoareTripleChecker+Time [2022-03-20 17:26:19,004 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 615 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 808 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-03-20 17:26:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-03-20 17:26:19,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 374. [2022-03-20 17:26:19,049 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) [2022-03-20 17:26:19,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 498 transitions. [2022-03-20 17:26:19,051 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 498 transitions. Word has length 53 [2022-03-20 17:26:19,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:26:19,051 INFO L478 AbstractCegarLoop]: Abstraction has 374 states and 498 transitions. [2022-03-20 17:26:19,052 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) [2022-03-20 17:26:19,052 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 498 transitions. [2022-03-20 17:26:19,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-20 17:26:19,055 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:26:19,055 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:26:19,055 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 17:26:19,056 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:26:19,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:26:19,056 INFO L85 PathProgramCache]: Analyzing trace with hash 17478568, now seen corresponding path program 1 times [2022-03-20 17:26:19,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:19,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [667128610] [2022-03-20 17:26:19,057 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:26:19,057 INFO L85 PathProgramCache]: Analyzing trace with hash 17478568, now seen corresponding path program 2 times [2022-03-20 17:26:19,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:26:19,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801268764] [2022-03-20 17:26:19,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:26:19,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:26:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:19,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:26:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:19,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:26:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:19,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:26:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:19,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:19,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:26:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:19,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:19,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:26:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:19,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 17:26:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:19,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:26:19,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:26:19,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801268764] [2022-03-20 17:26:19,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801268764] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:19,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:19,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:26:19,377 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:26:19,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [667128610] [2022-03-20 17:26:19,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [667128610] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:19,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:19,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:26:19,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13214649] [2022-03-20 17:26:19,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:26:19,378 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 17:26:19,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:19,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 17:26:19,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-20 17:26:19,379 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) [2022-03-20 17:26:21,037 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:26:23,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:26:25,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:26:26,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:26:26,479 INFO L93 Difference]: Finished difference Result 569 states and 751 transitions. [2022-03-20 17:26:26,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:26:26,480 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 [2022-03-20 17:26:26,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:26:26,482 INFO L225 Difference]: With dead ends: 569 [2022-03-20 17:26:26,482 INFO L226 Difference]: Without dead ends: 450 [2022-03-20 17:26:26,483 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:26:26,484 INFO L913 BasicCegarLoop]: 321 mSDtfsCounter, 974 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 330 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-03-20 17:26:26,484 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 489 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 652 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2022-03-20 17:26:26,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-20 17:26:26,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 410. [2022-03-20 17:26:26,540 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) [2022-03-20 17:26:26,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 545 transitions. [2022-03-20 17:26:26,542 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 545 transitions. Word has length 60 [2022-03-20 17:26:26,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:26:26,542 INFO L478 AbstractCegarLoop]: Abstraction has 410 states and 545 transitions. [2022-03-20 17:26:26,543 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) [2022-03-20 17:26:26,543 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 545 transitions. [2022-03-20 17:26:26,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-20 17:26:26,544 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:26:26,544 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:26:26,544 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 17:26:26,544 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:26:26,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:26:26,545 INFO L85 PathProgramCache]: Analyzing trace with hash -110356200, now seen corresponding path program 1 times [2022-03-20 17:26:26,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:26,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [798668155] [2022-03-20 17:26:26,545 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:26:26,546 INFO L85 PathProgramCache]: Analyzing trace with hash -110356200, now seen corresponding path program 2 times [2022-03-20 17:26:26,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:26:26,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351459744] [2022-03-20 17:26:26,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:26:26,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:26:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:26,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:26:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:26,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:26:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:26,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:26:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:26,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:26,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:26:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:26,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:26,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:26:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:26,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 17:26:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:26:26,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:26:26,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351459744] [2022-03-20 17:26:26,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351459744] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:26,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:26,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:26:26,955 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:26:26,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [798668155] [2022-03-20 17:26:26,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [798668155] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:26,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:26,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:26:26,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221312695] [2022-03-20 17:26:26,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:26:26,957 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 17:26:26,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:26,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 17:26:26,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-20 17:26:26,957 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) [2022-03-20 17:26:29,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:26:31,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:26:31,671 INFO L93 Difference]: Finished difference Result 450 states and 594 transitions. [2022-03-20 17:26:31,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 17:26:31,671 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 [2022-03-20 17:26:31,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:26:31,674 INFO L225 Difference]: With dead ends: 450 [2022-03-20 17:26:31,674 INFO L226 Difference]: Without dead ends: 442 [2022-03-20 17:26:31,675 INFO L912 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 [2022-03-20 17:26:31,675 INFO L913 BasicCegarLoop]: 333 mSDtfsCounter, 1547 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 516 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:26:31,676 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1556 Valid, 558 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 977 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-03-20 17:26:31,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-03-20 17:26:31,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 415. [2022-03-20 17:26:31,746 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) [2022-03-20 17:26:31,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 551 transitions. [2022-03-20 17:26:31,748 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 551 transitions. Word has length 60 [2022-03-20 17:26:31,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:26:31,748 INFO L478 AbstractCegarLoop]: Abstraction has 415 states and 551 transitions. [2022-03-20 17:26:31,749 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) [2022-03-20 17:26:31,749 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 551 transitions. [2022-03-20 17:26:31,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-20 17:26:31,750 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:26:31,750 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:26:31,750 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 17:26:31,750 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:26:31,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:26:31,750 INFO L85 PathProgramCache]: Analyzing trace with hash 400358010, now seen corresponding path program 1 times [2022-03-20 17:26:31,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:31,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1130648987] [2022-03-20 17:26:31,751 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:26:31,751 INFO L85 PathProgramCache]: Analyzing trace with hash 400358010, now seen corresponding path program 2 times [2022-03-20 17:26:31,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:26:31,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765874997] [2022-03-20 17:26:31,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:26:31,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:26:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:31,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:26:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:31,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:26:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:31,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:26:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:31,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:32,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:26:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:32,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:32,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:26:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:26:32,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:26:32,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765874997] [2022-03-20 17:26:32,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765874997] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:32,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:32,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:26:32,095 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:26:32,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1130648987] [2022-03-20 17:26:32,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1130648987] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:32,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:32,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:26:32,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626271370] [2022-03-20 17:26:32,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:26:32,096 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 17:26:32,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:32,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 17:26:32,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-20 17:26:32,099 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) [2022-03-20 17:26:33,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:26:36,429 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:26:38,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:26:41,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:26:41,010 INFO L93 Difference]: Finished difference Result 433 states and 574 transitions. [2022-03-20 17:26:41,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 17:26:41,011 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 [2022-03-20 17:26:41,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:26:41,013 INFO L225 Difference]: With dead ends: 433 [2022-03-20 17:26:41,013 INFO L226 Difference]: Without dead ends: 429 [2022-03-20 17:26:41,014 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:26:41,014 INFO L913 BasicCegarLoop]: 298 mSDtfsCounter, 808 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 268 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:26:41,014 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 532 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 802 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2022-03-20 17:26:41,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-03-20 17:26:41,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 414. [2022-03-20 17:26:41,077 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) [2022-03-20 17:26:41,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 548 transitions. [2022-03-20 17:26:41,079 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 548 transitions. Word has length 62 [2022-03-20 17:26:41,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:26:41,080 INFO L478 AbstractCegarLoop]: Abstraction has 414 states and 548 transitions. [2022-03-20 17:26:41,080 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) [2022-03-20 17:26:41,080 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 548 transitions. [2022-03-20 17:26:41,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-20 17:26:41,081 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:26:41,081 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:26:41,081 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-20 17:26:41,082 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:26:41,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:26:41,082 INFO L85 PathProgramCache]: Analyzing trace with hash 466089939, now seen corresponding path program 1 times [2022-03-20 17:26:41,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:41,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [595198232] [2022-03-20 17:26:41,082 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:26:41,083 INFO L85 PathProgramCache]: Analyzing trace with hash 466089939, now seen corresponding path program 2 times [2022-03-20 17:26:41,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:26:41,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030965547] [2022-03-20 17:26:41,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:26:41,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:26:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:41,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:26:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:41,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:26:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:41,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:26:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:41,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:41,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:26:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:41,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:41,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:26:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:41,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 17:26:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:26:41,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:26:41,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030965547] [2022-03-20 17:26:41,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030965547] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:41,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:41,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:26:41,475 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:26:41,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [595198232] [2022-03-20 17:26:41,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [595198232] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:41,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:41,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:26:41,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252987640] [2022-03-20 17:26:41,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:26:41,476 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 17:26:41,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:41,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 17:26:41,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-20 17:26:41,478 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) [2022-03-20 17:26:43,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:26:45,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:26:45,816 INFO L93 Difference]: Finished difference Result 448 states and 589 transitions. [2022-03-20 17:26:45,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 17:26:45,817 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 [2022-03-20 17:26:45,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:26:45,819 INFO L225 Difference]: With dead ends: 448 [2022-03-20 17:26:45,819 INFO L226 Difference]: Without dead ends: 440 [2022-03-20 17:26:45,820 INFO L912 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 [2022-03-20 17:26:45,820 INFO L913 BasicCegarLoop]: 332 mSDtfsCounter, 1422 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 493 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:26:45,821 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 538 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 928 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-03-20 17:26:45,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-03-20 17:26:45,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 415. [2022-03-20 17:26:45,877 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) [2022-03-20 17:26:45,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 549 transitions. [2022-03-20 17:26:45,879 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 549 transitions. Word has length 61 [2022-03-20 17:26:45,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:26:45,880 INFO L478 AbstractCegarLoop]: Abstraction has 415 states and 549 transitions. [2022-03-20 17:26:45,880 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) [2022-03-20 17:26:45,880 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 549 transitions. [2022-03-20 17:26:45,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-20 17:26:45,881 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:26:45,881 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:26:45,881 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-20 17:26:45,881 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:26:45,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:26:45,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1325055407, now seen corresponding path program 1 times [2022-03-20 17:26:45,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:45,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [499215692] [2022-03-20 17:26:45,882 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:26:45,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1325055407, now seen corresponding path program 2 times [2022-03-20 17:26:45,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:26:45,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595431946] [2022-03-20 17:26:45,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:26:45,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:26:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:46,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:26:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:46,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:26:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:46,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:26:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:46,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:46,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:26:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:46,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:46,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:26:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:46,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 17:26:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:46,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:26:46,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:26:46,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595431946] [2022-03-20 17:26:46,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595431946] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:46,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:46,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:26:46,223 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:26:46,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [499215692] [2022-03-20 17:26:46,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [499215692] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:46,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:46,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:26:46,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455453090] [2022-03-20 17:26:46,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:26:46,224 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 17:26:46,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:46,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 17:26:46,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:26:46,225 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) [2022-03-20 17:26:48,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:26:50,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:26:50,571 INFO L93 Difference]: Finished difference Result 442 states and 581 transitions. [2022-03-20 17:26:50,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 17:26:50,571 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 [2022-03-20 17:26:50,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:26:50,575 INFO L225 Difference]: With dead ends: 442 [2022-03-20 17:26:50,575 INFO L226 Difference]: Without dead ends: 389 [2022-03-20 17:26:50,575 INFO L912 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 [2022-03-20 17:26:50,578 INFO L913 BasicCegarLoop]: 337 mSDtfsCounter, 1312 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 441 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:26:50,578 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1320 Valid, 576 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 1086 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-03-20 17:26:50,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-03-20 17:26:50,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 371. [2022-03-20 17:26:50,665 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) [2022-03-20 17:26:50,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 493 transitions. [2022-03-20 17:26:50,668 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 493 transitions. Word has length 62 [2022-03-20 17:26:50,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:26:50,669 INFO L478 AbstractCegarLoop]: Abstraction has 371 states and 493 transitions. [2022-03-20 17:26:50,669 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) [2022-03-20 17:26:50,669 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 493 transitions. [2022-03-20 17:26:50,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-20 17:26:50,670 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:26:50,670 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:26:50,670 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-20 17:26:50,671 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:26:50,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:26:50,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1052170321, now seen corresponding path program 1 times [2022-03-20 17:26:50,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:50,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [284488472] [2022-03-20 17:26:50,672 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:26:50,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1052170321, now seen corresponding path program 2 times [2022-03-20 17:26:50,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:26:50,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832220901] [2022-03-20 17:26:50,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:26:50,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:26:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:50,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:26:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:50,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:26:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:50,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:26:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:50,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:51,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:26:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:51,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:51,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:26:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:51,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-20 17:26:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:51,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:26:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:51,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:26:51,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:26:51,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832220901] [2022-03-20 17:26:51,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832220901] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:51,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:51,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:26:51,166 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:26:51,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [284488472] [2022-03-20 17:26:51,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [284488472] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:51,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:51,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:26:51,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837484292] [2022-03-20 17:26:51,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:26:51,167 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:26:51,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:51,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:26:51,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:26:51,167 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) [2022-03-20 17:26:53,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:26:57,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:26:57,088 INFO L93 Difference]: Finished difference Result 417 states and 550 transitions. [2022-03-20 17:26:57,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 17:26:57,089 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 [2022-03-20 17:26:57,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:26:57,091 INFO L225 Difference]: With dead ends: 417 [2022-03-20 17:26:57,091 INFO L226 Difference]: Without dead ends: 409 [2022-03-20 17:26:57,091 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2022-03-20 17:26:57,092 INFO L913 BasicCegarLoop]: 278 mSDtfsCounter, 1368 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 1619 mSolverCounterSat, 436 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 1619 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:26:57,092 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 658 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 1619 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-03-20 17:26:57,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-03-20 17:26:57,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 386. [2022-03-20 17:26:57,163 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) [2022-03-20 17:26:57,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 511 transitions. [2022-03-20 17:26:57,164 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 511 transitions. Word has length 72 [2022-03-20 17:26:57,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:26:57,165 INFO L478 AbstractCegarLoop]: Abstraction has 386 states and 511 transitions. [2022-03-20 17:26:57,165 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) [2022-03-20 17:26:57,165 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 511 transitions. [2022-03-20 17:26:57,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-20 17:26:57,166 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:26:57,166 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:26:57,166 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-20 17:26:57,167 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:26:57,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:26:57,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2144673722, now seen corresponding path program 1 times [2022-03-20 17:26:57,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:57,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2034527225] [2022-03-20 17:26:57,167 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:26:57,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2144673722, now seen corresponding path program 2 times [2022-03-20 17:26:57,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:26:57,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868986274] [2022-03-20 17:26:57,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:26:57,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:26:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:57,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:26:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:57,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:26:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:57,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:26:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:57,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:57,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:26:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:57,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:26:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:57,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:26:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:57,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-20 17:26:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:57,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:26:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:26:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:26:57,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:26:57,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868986274] [2022-03-20 17:26:57,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868986274] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:57,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:57,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:26:57,625 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:26:57,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2034527225] [2022-03-20 17:26:57,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2034527225] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:26:57,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:26:57,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:26:57,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434604236] [2022-03-20 17:26:57,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:26:57,626 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:26:57,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:26:57,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:26:57,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:26:57,627 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) [2022-03-20 17:26:59,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:01,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:03,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:05,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:07,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:27:07,837 INFO L93 Difference]: Finished difference Result 417 states and 549 transitions. [2022-03-20 17:27:07,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 17:27:07,837 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 [2022-03-20 17:27:07,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:27:07,839 INFO L225 Difference]: With dead ends: 417 [2022-03-20 17:27:07,839 INFO L226 Difference]: Without dead ends: 409 [2022-03-20 17:27:07,840 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2022-03-20 17:27:07,840 INFO L913 BasicCegarLoop]: 277 mSDtfsCounter, 1291 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 432 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:27:07,840 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1303 Valid, 543 Invalid, 1744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 1309 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2022-03-20 17:27:07,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-03-20 17:27:07,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 387. [2022-03-20 17:27:07,926 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) [2022-03-20 17:27:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 512 transitions. [2022-03-20 17:27:07,927 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 512 transitions. Word has length 73 [2022-03-20 17:27:07,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:27:07,928 INFO L478 AbstractCegarLoop]: Abstraction has 387 states and 512 transitions. [2022-03-20 17:27:07,928 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) [2022-03-20 17:27:07,928 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 512 transitions. [2022-03-20 17:27:07,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-20 17:27:07,930 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:27:07,930 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:27:07,930 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-20 17:27:07,930 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:27:07,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:27:07,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1821545128, now seen corresponding path program 1 times [2022-03-20 17:27:07,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:07,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [51207737] [2022-03-20 17:27:07,931 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:27:07,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1821545128, now seen corresponding path program 2 times [2022-03-20 17:27:07,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:27:07,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128404219] [2022-03-20 17:27:07,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:27:07,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:27:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:08,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:27:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:08,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:27:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:08,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:27:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:08,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:27:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:08,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:27:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:08,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:27:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:08,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:27:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:08,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-20 17:27:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:08,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:27:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:27:08,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:27:08,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128404219] [2022-03-20 17:27:08,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128404219] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:08,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:08,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:27:08,250 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:27:08,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [51207737] [2022-03-20 17:27:08,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [51207737] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:08,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:08,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:27:08,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035263760] [2022-03-20 17:27:08,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:27:08,250 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 17:27:08,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:08,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 17:27:08,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:27:08,251 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) [2022-03-20 17:27:10,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:11,978 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:13,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:16,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:27:16,816 INFO L93 Difference]: Finished difference Result 419 states and 554 transitions. [2022-03-20 17:27:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 17:27:16,817 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 [2022-03-20 17:27:16,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:27:16,819 INFO L225 Difference]: With dead ends: 419 [2022-03-20 17:27:16,819 INFO L226 Difference]: Without dead ends: 396 [2022-03-20 17:27:16,819 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-03-20 17:27:16,820 INFO L913 BasicCegarLoop]: 272 mSDtfsCounter, 818 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 271 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:27:16,820 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 475 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 709 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-03-20 17:27:16,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-03-20 17:27:16,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 381. [2022-03-20 17:27:16,904 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) [2022-03-20 17:27:16,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 501 transitions. [2022-03-20 17:27:16,906 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 501 transitions. Word has length 74 [2022-03-20 17:27:16,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:27:16,906 INFO L478 AbstractCegarLoop]: Abstraction has 381 states and 501 transitions. [2022-03-20 17:27:16,906 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) [2022-03-20 17:27:16,906 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 501 transitions. [2022-03-20 17:27:16,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-20 17:27:16,907 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:27:16,908 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:27:16,908 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-20 17:27:16,908 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:27:16,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:27:16,908 INFO L85 PathProgramCache]: Analyzing trace with hash 937494245, now seen corresponding path program 1 times [2022-03-20 17:27:16,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:16,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [603637375] [2022-03-20 17:27:16,909 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:27:16,909 INFO L85 PathProgramCache]: Analyzing trace with hash 937494245, now seen corresponding path program 2 times [2022-03-20 17:27:16,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:27:16,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971502377] [2022-03-20 17:27:16,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:27:16,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:27:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:17,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:27:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:17,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:27:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:17,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:27:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:17,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:27:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:17,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:27:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:17,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:27:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:17,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:27:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:17,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 17:27:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 17:27:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:17,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:27:17,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:27:17,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971502377] [2022-03-20 17:27:17,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971502377] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:17,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:17,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:27:17,245 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:27:17,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [603637375] [2022-03-20 17:27:17,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [603637375] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:17,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:17,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:27:17,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639561938] [2022-03-20 17:27:17,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:27:17,246 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 17:27:17,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:17,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 17:27:17,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:27:17,247 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) [2022-03-20 17:27:19,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:21,313 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:23,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:25,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:27,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:27:27,379 INFO L93 Difference]: Finished difference Result 437 states and 561 transitions. [2022-03-20 17:27:27,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 17:27:27,380 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 [2022-03-20 17:27:27,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:27:27,384 INFO L225 Difference]: With dead ends: 437 [2022-03-20 17:27:27,384 INFO L226 Difference]: Without dead ends: 374 [2022-03-20 17:27:27,385 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-03-20 17:27:27,385 INFO L913 BasicCegarLoop]: 313 mSDtfsCounter, 1167 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 380 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-03-20 17:27:27,385 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 564 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 843 Invalid, 3 Unknown, 0 Unchecked, 9.7s Time] [2022-03-20 17:27:27,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-03-20 17:27:27,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 345. [2022-03-20 17:27:27,463 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) [2022-03-20 17:27:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 447 transitions. [2022-03-20 17:27:27,465 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 447 transitions. Word has length 77 [2022-03-20 17:27:27,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:27:27,465 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 447 transitions. [2022-03-20 17:27:27,465 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) [2022-03-20 17:27:27,465 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 447 transitions. [2022-03-20 17:27:27,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-20 17:27:27,467 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:27:27,467 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:27:27,467 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-20 17:27:27,467 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:27:27,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:27:27,467 INFO L85 PathProgramCache]: Analyzing trace with hash 641442499, now seen corresponding path program 1 times [2022-03-20 17:27:27,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:27,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [934481771] [2022-03-20 17:27:27,468 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:27:27,468 INFO L85 PathProgramCache]: Analyzing trace with hash 641442499, now seen corresponding path program 2 times [2022-03-20 17:27:27,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:27:27,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27683662] [2022-03-20 17:27:27,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:27:27,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:27:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:27,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:27:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:27,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:27:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:27,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:27:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:27,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:27:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:27,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:27:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:27,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:27:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:27,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:27:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:27,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-20 17:27:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:27,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:27:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:27,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:27:27,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:27:27,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27683662] [2022-03-20 17:27:27,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27683662] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:27,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:27,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 17:27:27,833 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:27:27,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [934481771] [2022-03-20 17:27:27,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [934481771] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:27,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:27,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 17:27:27,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650493743] [2022-03-20 17:27:27,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:27:27,835 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 17:27:27,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:27,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 17:27:27,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-20 17:27:27,836 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) [2022-03-20 17:27:29,920 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:33,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:27:33,266 INFO L93 Difference]: Finished difference Result 417 states and 534 transitions. [2022-03-20 17:27:33,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 17:27:33,267 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 [2022-03-20 17:27:33,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:27:33,268 INFO L225 Difference]: With dead ends: 417 [2022-03-20 17:27:33,268 INFO L226 Difference]: Without dead ends: 359 [2022-03-20 17:27:33,269 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-03-20 17:27:33,269 INFO L913 BasicCegarLoop]: 280 mSDtfsCounter, 976 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 354 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 2050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:27:33,269 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 744 Invalid, 2050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 1695 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-03-20 17:27:33,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-03-20 17:27:33,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 344. [2022-03-20 17:27:33,336 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) [2022-03-20 17:27:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 442 transitions. [2022-03-20 17:27:33,337 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 442 transitions. Word has length 75 [2022-03-20 17:27:33,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:27:33,337 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 442 transitions. [2022-03-20 17:27:33,337 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) [2022-03-20 17:27:33,337 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 442 transitions. [2022-03-20 17:27:33,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-20 17:27:33,339 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:27:33,339 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:27:33,339 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-20 17:27:33,339 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:27:33,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:27:33,339 INFO L85 PathProgramCache]: Analyzing trace with hash 476602328, now seen corresponding path program 1 times [2022-03-20 17:27:33,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:33,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [999612655] [2022-03-20 17:27:33,340 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:27:33,340 INFO L85 PathProgramCache]: Analyzing trace with hash 476602328, now seen corresponding path program 2 times [2022-03-20 17:27:33,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:27:33,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922235020] [2022-03-20 17:27:33,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:27:33,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:27:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:33,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:27:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:33,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:27:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:33,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:27:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:33,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:27:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:33,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:27:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:33,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:27:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:33,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:27:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:33,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 17:27:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:33,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:27:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:33,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:27:33,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:27:33,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922235020] [2022-03-20 17:27:33,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922235020] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:33,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:33,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:27:33,707 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:27:33,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [999612655] [2022-03-20 17:27:33,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [999612655] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:33,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:33,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:27:33,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337119079] [2022-03-20 17:27:33,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:27:33,707 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:27:33,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:33,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:27:33,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:27:33,708 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) [2022-03-20 17:27:35,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:40,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:27:40,003 INFO L93 Difference]: Finished difference Result 422 states and 536 transitions. [2022-03-20 17:27:40,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-20 17:27:40,003 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 [2022-03-20 17:27:40,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:27:40,005 INFO L225 Difference]: With dead ends: 422 [2022-03-20 17:27:40,005 INFO L226 Difference]: Without dead ends: 379 [2022-03-20 17:27:40,006 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2022-03-20 17:27:40,007 INFO L913 BasicCegarLoop]: 303 mSDtfsCounter, 1039 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 1633 mSolverCounterSat, 376 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 1633 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:27:40,007 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 692 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 1633 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-03-20 17:27:40,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-03-20 17:27:40,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 344. [2022-03-20 17:27:40,080 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) [2022-03-20 17:27:40,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 439 transitions. [2022-03-20 17:27:40,081 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 439 transitions. Word has length 76 [2022-03-20 17:27:40,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:27:40,081 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 439 transitions. [2022-03-20 17:27:40,081 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) [2022-03-20 17:27:40,081 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 439 transitions. [2022-03-20 17:27:40,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-20 17:27:40,083 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:27:40,083 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:27:40,083 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-20 17:27:40,083 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:27:40,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:27:40,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1346047832, now seen corresponding path program 1 times [2022-03-20 17:27:40,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:40,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [37692249] [2022-03-20 17:27:40,084 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:27:40,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1346047832, now seen corresponding path program 2 times [2022-03-20 17:27:40,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:27:40,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066748189] [2022-03-20 17:27:40,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:27:40,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:27:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:40,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:27:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:40,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:27:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:40,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:27:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:40,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:27:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:40,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:27:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:40,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:27:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:40,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:27:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:40,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-20 17:27:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:40,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:27:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:27:40,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:27:40,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066748189] [2022-03-20 17:27:40,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066748189] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:40,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:40,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:27:40,403 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:27:40,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [37692249] [2022-03-20 17:27:40,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [37692249] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:40,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:40,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:27:40,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151265886] [2022-03-20 17:27:40,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:27:40,404 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 17:27:40,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:40,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 17:27:40,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:27:40,405 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) [2022-03-20 17:27:42,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:45,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:27:45,839 INFO L93 Difference]: Finished difference Result 378 states and 480 transitions. [2022-03-20 17:27:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 17:27:45,840 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 [2022-03-20 17:27:45,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:27:45,841 INFO L225 Difference]: With dead ends: 378 [2022-03-20 17:27:45,841 INFO L226 Difference]: Without dead ends: 355 [2022-03-20 17:27:45,842 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:27:45,842 INFO L913 BasicCegarLoop]: 274 mSDtfsCounter, 458 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 155 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:27:45,842 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 627 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1227 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-03-20 17:27:45,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-03-20 17:27:45,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 335. [2022-03-20 17:27:45,921 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) [2022-03-20 17:27:45,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 429 transitions. [2022-03-20 17:27:45,922 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 429 transitions. Word has length 76 [2022-03-20 17:27:45,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:27:45,923 INFO L478 AbstractCegarLoop]: Abstraction has 335 states and 429 transitions. [2022-03-20 17:27:45,923 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) [2022-03-20 17:27:45,923 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 429 transitions. [2022-03-20 17:27:45,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-20 17:27:45,924 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:27:45,924 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:27:45,924 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-20 17:27:45,924 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:27:45,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:27:45,925 INFO L85 PathProgramCache]: Analyzing trace with hash 2131421, now seen corresponding path program 1 times [2022-03-20 17:27:45,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:45,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [199802891] [2022-03-20 17:27:45,925 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:27:45,925 INFO L85 PathProgramCache]: Analyzing trace with hash 2131421, now seen corresponding path program 2 times [2022-03-20 17:27:45,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:27:45,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453358826] [2022-03-20 17:27:45,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:27:45,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:27:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:46,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:27:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:46,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:27:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:46,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:27:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:46,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:27:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:46,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:27:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:46,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:27:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:46,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:27:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:46,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 17:27:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:46,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:27:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:46,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:27:46,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:27:46,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453358826] [2022-03-20 17:27:46,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453358826] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:46,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:46,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 17:27:46,345 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:27:46,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [199802891] [2022-03-20 17:27:46,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [199802891] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:46,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:46,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 17:27:46,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861542102] [2022-03-20 17:27:46,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:27:46,346 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 17:27:46,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:46,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 17:27:46,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:27:46,347 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) [2022-03-20 17:27:48,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:53,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:27:53,599 INFO L93 Difference]: Finished difference Result 398 states and 505 transitions. [2022-03-20 17:27:53,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 17:27:53,599 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 [2022-03-20 17:27:53,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:27:53,601 INFO L225 Difference]: With dead ends: 398 [2022-03-20 17:27:53,601 INFO L226 Difference]: Without dead ends: 354 [2022-03-20 17:27:53,602 INFO L912 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 [2022-03-20 17:27:53,603 INFO L913 BasicCegarLoop]: 272 mSDtfsCounter, 614 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 210 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 2661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:27:53,603 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 972 Invalid, 2661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2450 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-03-20 17:27:53,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-20 17:27:53,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 334. [2022-03-20 17:27:53,694 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) [2022-03-20 17:27:53,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 427 transitions. [2022-03-20 17:27:53,696 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 427 transitions. Word has length 78 [2022-03-20 17:27:53,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:27:53,696 INFO L478 AbstractCegarLoop]: Abstraction has 334 states and 427 transitions. [2022-03-20 17:27:53,696 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) [2022-03-20 17:27:53,696 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 427 transitions. [2022-03-20 17:27:53,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-20 17:27:53,697 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:27:53,697 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:27:53,698 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-20 17:27:53,698 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:27:53,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:27:53,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1889602735, now seen corresponding path program 1 times [2022-03-20 17:27:53,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:53,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [923999016] [2022-03-20 17:27:53,699 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:27:53,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1889602735, now seen corresponding path program 2 times [2022-03-20 17:27:53,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:27:53,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513587776] [2022-03-20 17:27:53,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:27:53,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:27:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:53,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:27:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:53,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:27:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:53,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:27:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:53,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:27:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:53,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:27:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:53,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:27:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:53,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:27:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:53,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-20 17:27:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:54,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:27:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:54,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:27:54,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:27:54,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513587776] [2022-03-20 17:27:54,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513587776] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:54,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:54,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 17:27:54,112 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:27:54,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [923999016] [2022-03-20 17:27:54,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [923999016] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:54,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:54,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 17:27:54,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512837554] [2022-03-20 17:27:54,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:27:54,113 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 17:27:54,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:54,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 17:27:54,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:27:54,114 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) [2022-03-20 17:27:56,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:01,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:01,111 INFO L93 Difference]: Finished difference Result 475 states and 607 transitions. [2022-03-20 17:28:01,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 17:28:01,111 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 [2022-03-20 17:28:01,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:01,113 INFO L225 Difference]: With dead ends: 475 [2022-03-20 17:28:01,113 INFO L226 Difference]: Without dead ends: 367 [2022-03-20 17:28:01,114 INFO L912 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 [2022-03-20 17:28:01,114 INFO L913 BasicCegarLoop]: 266 mSDtfsCounter, 668 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 235 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:01,115 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 1001 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 2562 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-03-20 17:28:01,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-03-20 17:28:01,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 338. [2022-03-20 17:28:01,191 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) [2022-03-20 17:28:01,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 432 transitions. [2022-03-20 17:28:01,192 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 432 transitions. Word has length 79 [2022-03-20 17:28:01,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:01,193 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 432 transitions. [2022-03-20 17:28:01,193 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) [2022-03-20 17:28:01,193 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 432 transitions. [2022-03-20 17:28:01,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-20 17:28:01,194 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:01,194 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:28:01,194 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-20 17:28:01,194 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:01,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:01,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2045108737, now seen corresponding path program 1 times [2022-03-20 17:28:01,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:01,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [426914731] [2022-03-20 17:28:01,195 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:28:01,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2045108737, now seen corresponding path program 2 times [2022-03-20 17:28:01,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:01,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53765590] [2022-03-20 17:28:01,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:01,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:01,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:01,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:28:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:01,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:01,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:01,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:28:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:01,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:01,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:28:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:01,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 17:28:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:01,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:28:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:01,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:01,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:01,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53765590] [2022-03-20 17:28:01,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53765590] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:01,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:01,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:28:01,620 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:01,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [426914731] [2022-03-20 17:28:01,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [426914731] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:01,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:01,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:28:01,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982136744] [2022-03-20 17:28:01,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:01,621 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 17:28:01,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:01,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 17:28:01,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:28:01,622 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) [2022-03-20 17:28:03,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:06,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:06,827 INFO L93 Difference]: Finished difference Result 429 states and 546 transitions. [2022-03-20 17:28:06,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-20 17:28:06,827 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 [2022-03-20 17:28:06,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:06,828 INFO L225 Difference]: With dead ends: 429 [2022-03-20 17:28:06,829 INFO L226 Difference]: Without dead ends: 376 [2022-03-20 17:28:06,829 INFO L912 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 [2022-03-20 17:28:06,829 INFO L913 BasicCegarLoop]: 274 mSDtfsCounter, 830 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 275 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:06,830 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [845 Valid, 546 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 1298 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-03-20 17:28:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-03-20 17:28:06,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 329. [2022-03-20 17:28:06,910 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) [2022-03-20 17:28:06,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 418 transitions. [2022-03-20 17:28:06,911 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 418 transitions. Word has length 79 [2022-03-20 17:28:06,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:06,912 INFO L478 AbstractCegarLoop]: Abstraction has 329 states and 418 transitions. [2022-03-20 17:28:06,912 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) [2022-03-20 17:28:06,912 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 418 transitions. [2022-03-20 17:28:06,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-20 17:28:06,913 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:06,913 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:28:06,913 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-20 17:28:06,914 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:06,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:06,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1773831806, now seen corresponding path program 1 times [2022-03-20 17:28:06,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:06,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1069625119] [2022-03-20 17:28:06,915 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:28:06,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1773831806, now seen corresponding path program 2 times [2022-03-20 17:28:06,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:06,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834843246] [2022-03-20 17:28:06,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:06,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:07,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:07,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:28:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:07,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:07,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:07,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:28:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:07,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:07,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:28:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:07,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 17:28:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:07,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-20 17:28:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:07,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:07,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 17:28:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:07,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:07,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:07,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834843246] [2022-03-20 17:28:07,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834843246] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:07,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:07,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:28:07,265 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:07,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1069625119] [2022-03-20 17:28:07,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1069625119] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:07,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:07,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:28:07,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216676077] [2022-03-20 17:28:07,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:07,265 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 17:28:07,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:07,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 17:28:07,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:28:07,266 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) [2022-03-20 17:28:08,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:10,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:12,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:14,990 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:17,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:17,172 INFO L93 Difference]: Finished difference Result 416 states and 527 transitions. [2022-03-20 17:28:17,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 17:28:17,172 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 [2022-03-20 17:28:17,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:17,173 INFO L225 Difference]: With dead ends: 416 [2022-03-20 17:28:17,174 INFO L226 Difference]: Without dead ends: 357 [2022-03-20 17:28:17,174 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2022-03-20 17:28:17,175 INFO L913 BasicCegarLoop]: 263 mSDtfsCounter, 382 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 142 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:17,175 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 586 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1122 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2022-03-20 17:28:17,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-03-20 17:28:17,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 327. [2022-03-20 17:28:17,246 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) [2022-03-20 17:28:17,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 413 transitions. [2022-03-20 17:28:17,247 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 413 transitions. Word has length 84 [2022-03-20 17:28:17,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:17,247 INFO L478 AbstractCegarLoop]: Abstraction has 327 states and 413 transitions. [2022-03-20 17:28:17,247 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) [2022-03-20 17:28:17,247 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 413 transitions. [2022-03-20 17:28:17,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-20 17:28:17,248 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:17,248 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:28:17,249 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-20 17:28:17,249 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:17,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:17,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1690581556, now seen corresponding path program 1 times [2022-03-20 17:28:17,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:17,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [544246709] [2022-03-20 17:28:17,249 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:28:17,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1690581556, now seen corresponding path program 2 times [2022-03-20 17:28:17,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:17,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409894866] [2022-03-20 17:28:17,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:17,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:17,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:17,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:28:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:17,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:17,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:17,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:28:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:17,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:17,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:28:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:17,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 17:28:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:17,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:28:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:17,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:17,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:17,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409894866] [2022-03-20 17:28:17,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409894866] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:17,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:17,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:28:17,638 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:17,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [544246709] [2022-03-20 17:28:17,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [544246709] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:17,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:17,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:28:17,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244401565] [2022-03-20 17:28:17,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:17,639 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 17:28:17,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:17,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 17:28:17,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:28:17,639 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) [2022-03-20 17:28:19,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:20,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:22,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:24,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:26,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:28,119 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:30,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:30,359 INFO L93 Difference]: Finished difference Result 371 states and 465 transitions. [2022-03-20 17:28:30,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 17:28:30,360 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 [2022-03-20 17:28:30,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:30,361 INFO L225 Difference]: With dead ends: 371 [2022-03-20 17:28:30,361 INFO L226 Difference]: Without dead ends: 346 [2022-03-20 17:28:30,362 INFO L912 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 [2022-03-20 17:28:30,362 INFO L913 BasicCegarLoop]: 257 mSDtfsCounter, 1135 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 377 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:30,362 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 454 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 605 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2022-03-20 17:28:30,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-03-20 17:28:30,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 326. [2022-03-20 17:28:30,438 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) [2022-03-20 17:28:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 411 transitions. [2022-03-20 17:28:30,439 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 411 transitions. Word has length 80 [2022-03-20 17:28:30,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:30,440 INFO L478 AbstractCegarLoop]: Abstraction has 326 states and 411 transitions. [2022-03-20 17:28:30,440 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) [2022-03-20 17:28:30,440 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 411 transitions. [2022-03-20 17:28:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-20 17:28:30,441 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:30,441 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:28:30,442 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-20 17:28:30,442 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:30,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:30,442 INFO L85 PathProgramCache]: Analyzing trace with hash 664933900, now seen corresponding path program 1 times [2022-03-20 17:28:30,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:30,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1146629448] [2022-03-20 17:28:30,443 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:28:30,443 INFO L85 PathProgramCache]: Analyzing trace with hash 664933900, now seen corresponding path program 2 times [2022-03-20 17:28:30,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:30,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031790705] [2022-03-20 17:28:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:30,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:30,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:30,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:28:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:30,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:30,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:30,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:28:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:30,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:30,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:28:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:30,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 17:28:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:30,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:28:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:30,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:30,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031790705] [2022-03-20 17:28:30,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031790705] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:30,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:30,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 17:28:30,835 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:30,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1146629448] [2022-03-20 17:28:30,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1146629448] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:30,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:30,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 17:28:30,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234911168] [2022-03-20 17:28:30,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:30,836 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 17:28:30,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:30,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 17:28:30,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:28:30,837 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) [2022-03-20 17:28:32,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:34,943 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:36,967 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:38,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:41,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:41,195 INFO L93 Difference]: Finished difference Result 353 states and 444 transitions. [2022-03-20 17:28:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 17:28:41,196 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 [2022-03-20 17:28:41,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:41,197 INFO L225 Difference]: With dead ends: 353 [2022-03-20 17:28:41,197 INFO L226 Difference]: Without dead ends: 205 [2022-03-20 17:28:41,198 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2022-03-20 17:28:41,198 INFO L913 BasicCegarLoop]: 232 mSDtfsCounter, 844 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 303 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:41,198 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 467 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1246 Invalid, 3 Unknown, 0 Unchecked, 9.8s Time] [2022-03-20 17:28:41,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-03-20 17:28:41,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 186. [2022-03-20 17:28:41,245 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) [2022-03-20 17:28:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 220 transitions. [2022-03-20 17:28:41,246 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 220 transitions. Word has length 80 [2022-03-20 17:28:41,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:41,246 INFO L478 AbstractCegarLoop]: Abstraction has 186 states and 220 transitions. [2022-03-20 17:28:41,246 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) [2022-03-20 17:28:41,246 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 220 transitions. [2022-03-20 17:28:41,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-20 17:28:41,247 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:41,247 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:28:41,247 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-20 17:28:41,248 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:41,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:41,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1299022194, now seen corresponding path program 1 times [2022-03-20 17:28:41,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:41,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1133620600] [2022-03-20 17:28:41,248 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:28:41,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1299022194, now seen corresponding path program 2 times [2022-03-20 17:28:41,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:41,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716857949] [2022-03-20 17:28:41,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:41,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:41,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:41,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:28:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:41,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:41,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:41,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:28:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:41,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:41,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:28:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:41,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 17:28:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:41,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 17:28:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:41,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:28:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:41,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:41,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:41,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:41,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716857949] [2022-03-20 17:28:41,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716857949] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:41,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:41,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 17:28:41,638 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:41,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1133620600] [2022-03-20 17:28:41,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1133620600] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:41,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:41,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 17:28:41,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961858997] [2022-03-20 17:28:41,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:41,639 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 17:28:41,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:41,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 17:28:41,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-20 17:28:41,639 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) [2022-03-20 17:28:43,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:47,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:47,732 INFO L93 Difference]: Finished difference Result 300 states and 368 transitions. [2022-03-20 17:28:47,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 17:28:47,733 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 [2022-03-20 17:28:47,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:47,734 INFO L225 Difference]: With dead ends: 300 [2022-03-20 17:28:47,734 INFO L226 Difference]: Without dead ends: 237 [2022-03-20 17:28:47,735 INFO L912 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 [2022-03-20 17:28:47,735 INFO L913 BasicCegarLoop]: 135 mSDtfsCounter, 230 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 126 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:47,735 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 398 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 834 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-03-20 17:28:47,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-03-20 17:28:47,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 199. [2022-03-20 17:28:47,812 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) [2022-03-20 17:28:47,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 233 transitions. [2022-03-20 17:28:47,813 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 233 transitions. Word has length 88 [2022-03-20 17:28:47,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:47,813 INFO L478 AbstractCegarLoop]: Abstraction has 199 states and 233 transitions. [2022-03-20 17:28:47,814 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) [2022-03-20 17:28:47,814 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 233 transitions. [2022-03-20 17:28:47,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-20 17:28:47,814 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:47,815 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:28:47,815 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-20 17:28:47,815 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:47,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:47,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1324935307, now seen corresponding path program 1 times [2022-03-20 17:28:47,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:47,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [24755700] [2022-03-20 17:28:47,816 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:28:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1324935307, now seen corresponding path program 2 times [2022-03-20 17:28:47,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:47,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120251985] [2022-03-20 17:28:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:47,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:47,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:48,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:28:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:48,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:48,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:48,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:28:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:48,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:48,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:28:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:48,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 17:28:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:48,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 17:28:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:48,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:28:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:48,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:48,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:48,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120251985] [2022-03-20 17:28:48,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120251985] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:48,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:48,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:28:48,146 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:48,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [24755700] [2022-03-20 17:28:48,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [24755700] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:48,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:48,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:28:48,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387261583] [2022-03-20 17:28:48,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:48,147 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 17:28:48,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:48,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 17:28:48,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:28:48,148 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) [2022-03-20 17:28:50,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:52,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:52,098 INFO L93 Difference]: Finished difference Result 437 states and 522 transitions. [2022-03-20 17:28:52,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 17:28:52,098 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 [2022-03-20 17:28:52,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:52,100 INFO L225 Difference]: With dead ends: 437 [2022-03-20 17:28:52,100 INFO L226 Difference]: Without dead ends: 408 [2022-03-20 17:28:52,101 INFO L912 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 [2022-03-20 17:28:52,101 INFO L913 BasicCegarLoop]: 142 mSDtfsCounter, 608 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 285 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:52,102 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 282 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 483 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-03-20 17:28:52,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-03-20 17:28:52,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 345. [2022-03-20 17:28:52,206 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) [2022-03-20 17:28:52,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 409 transitions. [2022-03-20 17:28:52,207 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 409 transitions. Word has length 89 [2022-03-20 17:28:52,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:52,208 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 409 transitions. [2022-03-20 17:28:52,208 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) [2022-03-20 17:28:52,208 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 409 transitions. [2022-03-20 17:28:52,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-20 17:28:52,209 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:52,209 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:28:52,209 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-20 17:28:52,209 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:52,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:52,210 INFO L85 PathProgramCache]: Analyzing trace with hash 450072055, now seen corresponding path program 1 times [2022-03-20 17:28:52,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:52,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1903800589] [2022-03-20 17:28:52,210 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:28:52,210 INFO L85 PathProgramCache]: Analyzing trace with hash 450072055, now seen corresponding path program 2 times [2022-03-20 17:28:52,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:52,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077699977] [2022-03-20 17:28:52,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:52,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:52,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:52,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:28:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:52,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:52,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:52,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:28:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:52,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:52,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:28:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:52,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 17:28:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:52,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 17:28:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:52,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:28:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:52,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:52,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:52,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077699977] [2022-03-20 17:28:52,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077699977] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:52,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:52,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:28:52,561 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:52,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1903800589] [2022-03-20 17:28:52,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1903800589] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:52,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:52,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:28:52,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425885151] [2022-03-20 17:28:52,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:52,562 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 17:28:52,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:52,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 17:28:52,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:28:52,563 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) [2022-03-20 17:28:54,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:28:58,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:58,147 INFO L93 Difference]: Finished difference Result 657 states and 796 transitions. [2022-03-20 17:28:58,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:28:58,148 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 [2022-03-20 17:28:58,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:58,149 INFO L225 Difference]: With dead ends: 657 [2022-03-20 17:28:58,149 INFO L226 Difference]: Without dead ends: 399 [2022-03-20 17:28:58,150 INFO L912 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 [2022-03-20 17:28:58,150 INFO L913 BasicCegarLoop]: 142 mSDtfsCounter, 219 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 107 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:58,150 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 393 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 849 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-03-20 17:28:58,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-03-20 17:28:58,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 337. [2022-03-20 17:28:58,268 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) [2022-03-20 17:28:58,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 399 transitions. [2022-03-20 17:28:58,269 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 399 transitions. Word has length 89 [2022-03-20 17:28:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:58,269 INFO L478 AbstractCegarLoop]: Abstraction has 337 states and 399 transitions. [2022-03-20 17:28:58,269 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) [2022-03-20 17:28:58,270 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 399 transitions. [2022-03-20 17:28:58,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-20 17:28:58,270 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:58,271 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:28:58,271 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-20 17:28:58,271 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:58,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:58,271 INFO L85 PathProgramCache]: Analyzing trace with hash -623916271, now seen corresponding path program 1 times [2022-03-20 17:28:58,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:58,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1485123939] [2022-03-20 17:28:58,272 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:28:58,272 INFO L85 PathProgramCache]: Analyzing trace with hash -623916271, now seen corresponding path program 2 times [2022-03-20 17:28:58,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:58,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429781228] [2022-03-20 17:28:58,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:58,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:58,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:58,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:28:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:58,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:58,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:58,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:28:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:58,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:28:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:58,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 17:28:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:58,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 17:28:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:58,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-20 17:28:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:58,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-20 17:28:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:58,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:28:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:58,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:58,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:58,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:58,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429781228] [2022-03-20 17:28:58,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429781228] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:58,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:58,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:28:58,955 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:58,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1485123939] [2022-03-20 17:28:58,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1485123939] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:58,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:58,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:28:58,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120258272] [2022-03-20 17:28:58,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:58,956 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 17:28:58,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:58,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 17:28:58,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-20 17:28:58,957 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) [2022-03-20 17:29:01,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:03,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:03,301 INFO L93 Difference]: Finished difference Result 675 states and 810 transitions. [2022-03-20 17:29:03,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 17:29:03,301 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 [2022-03-20 17:29:03,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:03,302 INFO L225 Difference]: With dead ends: 675 [2022-03-20 17:29:03,303 INFO L226 Difference]: Without dead ends: 389 [2022-03-20 17:29:03,303 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:29:03,303 INFO L913 BasicCegarLoop]: 139 mSDtfsCounter, 333 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 170 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:29:03,304 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 313 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 469 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-03-20 17:29:03,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-03-20 17:29:03,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 339. [2022-03-20 17:29:03,418 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) [2022-03-20 17:29:03,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 401 transitions. [2022-03-20 17:29:03,419 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 401 transitions. Word has length 102 [2022-03-20 17:29:03,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:03,420 INFO L478 AbstractCegarLoop]: Abstraction has 339 states and 401 transitions. [2022-03-20 17:29:03,420 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) [2022-03-20 17:29:03,420 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 401 transitions. [2022-03-20 17:29:03,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-20 17:29:03,421 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:03,421 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:29:03,421 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-20 17:29:03,421 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:03,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:03,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1023672093, now seen corresponding path program 1 times [2022-03-20 17:29:03,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:03,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [295386780] [2022-03-20 17:29:03,436 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:03,436 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-20 17:29:03,436 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:03,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1023672093, now seen corresponding path program 2 times [2022-03-20 17:29:03,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:03,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515565966] [2022-03-20 17:29:03,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:03,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:03,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:03,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:29:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:03,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:03,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:03,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:29:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:03,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:03,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:29:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:04,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:04,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 17:29:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:04,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 17:29:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:04,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 17:29:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:04,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:29:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:04,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:04,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:29:04,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:04,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515565966] [2022-03-20 17:29:04,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515565966] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:29:04,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810352418] [2022-03-20 17:29:04,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:29:04,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:29:04,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:29:04,148 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:29:04,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 17:29:05,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:29:05,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:29:05,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-20 17:29:05,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:29:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:05,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:29:05,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810352418] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:05,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:29:05,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-03-20 17:29:05,245 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:05,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [295386780] [2022-03-20 17:29:05,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [295386780] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:05,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:05,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:29:05,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965249533] [2022-03-20 17:29:05,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:05,246 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:29:05,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:05,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:29:05,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:29:05,247 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) [2022-03-20 17:29:05,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:05,409 INFO L93 Difference]: Finished difference Result 435 states and 520 transitions. [2022-03-20 17:29:05,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:29:05,409 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 [2022-03-20 17:29:05,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:05,411 INFO L225 Difference]: With dead ends: 435 [2022-03-20 17:29:05,411 INFO L226 Difference]: Without dead ends: 325 [2022-03-20 17:29:05,411 INFO L912 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 [2022-03-20 17:29:05,412 INFO L913 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 [2022-03-20 17:29:05,412 INFO L914 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] [2022-03-20 17:29:05,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-03-20 17:29:05,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2022-03-20 17:29:05,540 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) [2022-03-20 17:29:05,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 381 transitions. [2022-03-20 17:29:05,541 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 381 transitions. Word has length 103 [2022-03-20 17:29:05,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:05,541 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 381 transitions. [2022-03-20 17:29:05,541 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) [2022-03-20 17:29:05,541 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 381 transitions. [2022-03-20 17:29:05,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-20 17:29:05,542 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:05,542 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:29:05,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-20 17:29:05,755 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 [2022-03-20 17:29:05,755 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:05,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:05,756 INFO L85 PathProgramCache]: Analyzing trace with hash 813900694, now seen corresponding path program 1 times [2022-03-20 17:29:05,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:05,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1855786216] [2022-03-20 17:29:05,757 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:05,758 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-20 17:29:05,758 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:05,758 INFO L85 PathProgramCache]: Analyzing trace with hash 813900694, now seen corresponding path program 2 times [2022-03-20 17:29:05,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:05,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117021614] [2022-03-20 17:29:05,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:05,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:05,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:06,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:29:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:06,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:06,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:06,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:29:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:06,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:06,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:29:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:06,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:06,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 17:29:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:06,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 17:29:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:06,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 17:29:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:06,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:29:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:06,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:06,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:29:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:06,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:06,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:06,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117021614] [2022-03-20 17:29:06,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117021614] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:06,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:06,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:29:06,267 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:06,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1855786216] [2022-03-20 17:29:06,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1855786216] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:06,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:06,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:29:06,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723379366] [2022-03-20 17:29:06,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:06,268 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:29:06,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:06,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:29:06,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:29:06,269 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) [2022-03-20 17:29:08,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:10,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:10,101 INFO L93 Difference]: Finished difference Result 459 states and 550 transitions. [2022-03-20 17:29:10,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 17:29:10,102 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 [2022-03-20 17:29:10,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:10,103 INFO L225 Difference]: With dead ends: 459 [2022-03-20 17:29:10,103 INFO L226 Difference]: Without dead ends: 363 [2022-03-20 17:29:10,104 INFO L912 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 [2022-03-20 17:29:10,104 INFO L913 BasicCegarLoop]: 130 mSDtfsCounter, 388 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 183 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:29:10,104 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 353 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 714 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-03-20 17:29:10,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-03-20 17:29:10,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 313. [2022-03-20 17:29:10,224 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) [2022-03-20 17:29:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 365 transitions. [2022-03-20 17:29:10,225 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 365 transitions. Word has length 107 [2022-03-20 17:29:10,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:10,225 INFO L478 AbstractCegarLoop]: Abstraction has 313 states and 365 transitions. [2022-03-20 17:29:10,225 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) [2022-03-20 17:29:10,225 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 365 transitions. [2022-03-20 17:29:10,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-20 17:29:10,226 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:10,226 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:29:10,226 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-20 17:29:10,226 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:10,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:10,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1477106018, now seen corresponding path program 1 times [2022-03-20 17:29:10,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:10,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2036033373] [2022-03-20 17:29:10,228 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:10,228 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-20 17:29:10,228 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:10,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1477106018, now seen corresponding path program 2 times [2022-03-20 17:29:10,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:10,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324754764] [2022-03-20 17:29:10,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:10,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:10,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:29:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:10,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:10,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:10,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:29:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:10,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:10,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:29:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:10,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:10,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 17:29:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:10,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 17:29:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:10,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 17:29:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:10,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:29:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:10,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:10,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:29:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:10,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:10,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:10,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324754764] [2022-03-20 17:29:10,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324754764] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:10,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:10,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:29:10,607 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:10,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2036033373] [2022-03-20 17:29:10,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2036033373] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:10,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:10,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:29:10,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451052401] [2022-03-20 17:29:10,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:10,609 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 17:29:10,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:10,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 17:29:10,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-03-20 17:29:10,610 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) [2022-03-20 17:29:12,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:13,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:13,765 INFO L93 Difference]: Finished difference Result 395 states and 474 transitions. [2022-03-20 17:29:13,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 17:29:13,766 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 [2022-03-20 17:29:13,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:13,767 INFO L225 Difference]: With dead ends: 395 [2022-03-20 17:29:13,767 INFO L226 Difference]: Without dead ends: 392 [2022-03-20 17:29:13,767 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:29:13,768 INFO L913 BasicCegarLoop]: 148 mSDtfsCounter, 300 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 150 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-20 17:29:13,768 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 311 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 376 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-03-20 17:29:13,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-03-20 17:29:13,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 321. [2022-03-20 17:29:13,888 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) [2022-03-20 17:29:13,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 377 transitions. [2022-03-20 17:29:13,889 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 377 transitions. Word has length 109 [2022-03-20 17:29:13,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:13,889 INFO L478 AbstractCegarLoop]: Abstraction has 321 states and 377 transitions. [2022-03-20 17:29:13,889 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) [2022-03-20 17:29:13,889 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 377 transitions. [2022-03-20 17:29:13,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-20 17:29:13,890 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:13,891 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:29:13,891 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-20 17:29:13,891 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:13,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:13,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1629931519, now seen corresponding path program 1 times [2022-03-20 17:29:13,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:13,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [682497296] [2022-03-20 17:29:13,892 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:13,893 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-20 17:29:13,893 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:13,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1629931519, now seen corresponding path program 2 times [2022-03-20 17:29:13,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:13,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142221635] [2022-03-20 17:29:13,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:13,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:14,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:14,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:29:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:14,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:14,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:14,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:29:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:14,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:14,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:29:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:14,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:14,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 17:29:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:14,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 17:29:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:14,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 17:29:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:14,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:29:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:14,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:14,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:29:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:14,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:14,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:14,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142221635] [2022-03-20 17:29:14,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142221635] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:14,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:14,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:29:14,246 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:14,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [682497296] [2022-03-20 17:29:14,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [682497296] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:14,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:14,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:29:14,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072507083] [2022-03-20 17:29:14,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:14,246 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 17:29:14,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:14,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 17:29:14,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-03-20 17:29:14,247 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) [2022-03-20 17:29:16,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:17,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:17,841 INFO L93 Difference]: Finished difference Result 471 states and 566 transitions. [2022-03-20 17:29:17,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 17:29:17,841 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 [2022-03-20 17:29:17,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:17,843 INFO L225 Difference]: With dead ends: 471 [2022-03-20 17:29:17,843 INFO L226 Difference]: Without dead ends: 383 [2022-03-20 17:29:17,843 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:29:17,844 INFO L913 BasicCegarLoop]: 142 mSDtfsCounter, 321 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 171 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:29:17,844 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 283 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 331 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-03-20 17:29:17,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-03-20 17:29:17,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 327. [2022-03-20 17:29:17,983 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) [2022-03-20 17:29:17,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 383 transitions. [2022-03-20 17:29:17,984 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 383 transitions. Word has length 109 [2022-03-20 17:29:17,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:17,985 INFO L478 AbstractCegarLoop]: Abstraction has 327 states and 383 transitions. [2022-03-20 17:29:17,985 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) [2022-03-20 17:29:17,985 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 383 transitions. [2022-03-20 17:29:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-20 17:29:17,986 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:17,986 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:29:17,986 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-20 17:29:17,986 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:17,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:17,987 INFO L85 PathProgramCache]: Analyzing trace with hash -979484737, now seen corresponding path program 1 times [2022-03-20 17:29:17,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:17,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [697913648] [2022-03-20 17:29:17,988 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:17,988 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-20 17:29:17,988 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:17,988 INFO L85 PathProgramCache]: Analyzing trace with hash -979484737, now seen corresponding path program 2 times [2022-03-20 17:29:17,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:17,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434700779] [2022-03-20 17:29:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:17,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:18,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:18,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:29:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:18,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:18,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:18,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:29:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:18,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:18,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:29:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:18,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:18,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 17:29:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:18,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 17:29:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:18,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 17:29:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:18,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:29:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:18,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:18,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:29:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:18,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:18,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:18,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434700779] [2022-03-20 17:29:18,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434700779] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:18,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:18,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:29:18,443 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:18,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [697913648] [2022-03-20 17:29:18,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [697913648] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:18,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:18,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:29:18,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937879879] [2022-03-20 17:29:18,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:18,444 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:29:18,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:18,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:29:18,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:29:18,445 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) [2022-03-20 17:29:20,519 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 [] [2022-03-20 17:29:22,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:22,559 INFO L93 Difference]: Finished difference Result 425 states and 503 transitions. [2022-03-20 17:29:22,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 17:29:22,560 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 [2022-03-20 17:29:22,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:22,561 INFO L225 Difference]: With dead ends: 425 [2022-03-20 17:29:22,561 INFO L226 Difference]: Without dead ends: 396 [2022-03-20 17:29:22,561 INFO L912 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 [2022-03-20 17:29:22,562 INFO L913 BasicCegarLoop]: 147 mSDtfsCounter, 204 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 111 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-20 17:29:22,562 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 481 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 859 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-03-20 17:29:22,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-03-20 17:29:22,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 337. [2022-03-20 17:29:22,671 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) [2022-03-20 17:29:22,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 393 transitions. [2022-03-20 17:29:22,672 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 393 transitions. Word has length 109 [2022-03-20 17:29:22,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:22,672 INFO L478 AbstractCegarLoop]: Abstraction has 337 states and 393 transitions. [2022-03-20 17:29:22,672 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) [2022-03-20 17:29:22,672 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 393 transitions. [2022-03-20 17:29:22,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-20 17:29:22,673 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:22,673 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:29:22,673 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-20 17:29:22,673 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:22,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:22,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1216749988, now seen corresponding path program 1 times [2022-03-20 17:29:22,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:22,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [281825464] [2022-03-20 17:29:22,675 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:22,675 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-20 17:29:22,675 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:22,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1216749988, now seen corresponding path program 2 times [2022-03-20 17:29:22,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:22,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091885407] [2022-03-20 17:29:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:22,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:22,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:29:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:22,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:22,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:22,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:29:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:23,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:23,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:29:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:23,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:23,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 17:29:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:23,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 17:29:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:23,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 17:29:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:23,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:29:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:23,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:23,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:29:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:23,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:23,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:23,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091885407] [2022-03-20 17:29:23,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091885407] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:23,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:23,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:29:23,171 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:23,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [281825464] [2022-03-20 17:29:23,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [281825464] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:23,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:23,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:29:23,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869272454] [2022-03-20 17:29:23,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:23,173 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:29:23,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:23,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:29:23,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:29:23,174 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) [2022-03-20 17:29:25,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:27,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:27,148 INFO L93 Difference]: Finished difference Result 426 states and 498 transitions. [2022-03-20 17:29:27,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-20 17:29:27,149 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 [2022-03-20 17:29:27,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:27,150 INFO L225 Difference]: With dead ends: 426 [2022-03-20 17:29:27,150 INFO L226 Difference]: Without dead ends: 379 [2022-03-20 17:29:27,151 INFO L912 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 [2022-03-20 17:29:27,151 INFO L913 BasicCegarLoop]: 128 mSDtfsCounter, 430 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 186 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:29:27,151 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 297 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 495 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-03-20 17:29:27,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-03-20 17:29:27,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 331. [2022-03-20 17:29:27,262 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) [2022-03-20 17:29:27,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 379 transitions. [2022-03-20 17:29:27,263 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 379 transitions. Word has length 110 [2022-03-20 17:29:27,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:27,264 INFO L478 AbstractCegarLoop]: Abstraction has 331 states and 379 transitions. [2022-03-20 17:29:27,264 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) [2022-03-20 17:29:27,264 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 379 transitions. [2022-03-20 17:29:27,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-20 17:29:27,265 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:27,265 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:29:27,265 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-20 17:29:27,265 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:27,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:27,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1464166070, now seen corresponding path program 1 times [2022-03-20 17:29:27,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:27,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1032531152] [2022-03-20 17:29:27,266 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:27,266 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-20 17:29:27,266 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:27,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1464166070, now seen corresponding path program 2 times [2022-03-20 17:29:27,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:27,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820892127] [2022-03-20 17:29:27,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:27,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:27,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:27,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:29:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:27,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:27,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:27,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:29:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:27,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:27,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:29:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:27,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:27,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 17:29:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:27,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 17:29:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:27,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 17:29:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:27,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:29:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:27,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:27,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:29:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:27,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:27,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:27,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820892127] [2022-03-20 17:29:27,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820892127] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:27,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:27,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:29:27,665 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:27,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1032531152] [2022-03-20 17:29:27,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1032531152] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:27,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:27,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:29:27,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634041172] [2022-03-20 17:29:27,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:27,666 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:29:27,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:27,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:29:27,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:29:27,666 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) [2022-03-20 17:29:29,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:31,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:31,975 INFO L93 Difference]: Finished difference Result 439 states and 509 transitions. [2022-03-20 17:29:31,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 17:29:31,975 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 [2022-03-20 17:29:31,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:31,977 INFO L225 Difference]: With dead ends: 439 [2022-03-20 17:29:31,977 INFO L226 Difference]: Without dead ends: 370 [2022-03-20 17:29:31,977 INFO L912 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 [2022-03-20 17:29:31,978 INFO L913 BasicCegarLoop]: 147 mSDtfsCounter, 276 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 140 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:29:31,978 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 464 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 848 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-03-20 17:29:31,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-03-20 17:29:32,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 321. [2022-03-20 17:29:32,097 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) [2022-03-20 17:29:32,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 363 transitions. [2022-03-20 17:29:32,097 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 363 transitions. Word has length 110 [2022-03-20 17:29:32,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:32,098 INFO L478 AbstractCegarLoop]: Abstraction has 321 states and 363 transitions. [2022-03-20 17:29:32,098 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) [2022-03-20 17:29:32,098 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 363 transitions. [2022-03-20 17:29:32,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-20 17:29:32,098 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:32,098 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:29:32,098 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-20 17:29:32,099 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:32,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:32,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1354625370, now seen corresponding path program 1 times [2022-03-20 17:29:32,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:32,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1048636036] [2022-03-20 17:29:32,100 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:32,100 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-20 17:29:32,100 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:32,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1354625370, now seen corresponding path program 2 times [2022-03-20 17:29:32,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:32,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83316906] [2022-03-20 17:29:32,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:32,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:32,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:32,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:29:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:32,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:32,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:32,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:29:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:32,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:32,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:29:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:32,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:32,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 17:29:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:32,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 17:29:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:32,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 17:29:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:32,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:29:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:32,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:32,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:29:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:32,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:32,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83316906] [2022-03-20 17:29:32,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83316906] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:32,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:32,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:29:32,459 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:32,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1048636036] [2022-03-20 17:29:32,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1048636036] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:32,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:32,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:29:32,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93379075] [2022-03-20 17:29:32,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:32,460 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 17:29:32,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:32,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 17:29:32,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-03-20 17:29:32,460 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) [2022-03-20 17:29:34,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:35,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:35,812 INFO L93 Difference]: Finished difference Result 452 states and 515 transitions. [2022-03-20 17:29:35,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 17:29:35,813 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 [2022-03-20 17:29:35,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:35,814 INFO L225 Difference]: With dead ends: 452 [2022-03-20 17:29:35,814 INFO L226 Difference]: Without dead ends: 386 [2022-03-20 17:29:35,814 INFO L912 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 [2022-03-20 17:29:35,815 INFO L913 BasicCegarLoop]: 135 mSDtfsCounter, 299 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 157 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:29:35,815 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 326 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 362 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-03-20 17:29:35,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-03-20 17:29:35,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 338. [2022-03-20 17:29:35,924 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) [2022-03-20 17:29:35,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 377 transitions. [2022-03-20 17:29:35,925 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 377 transitions. Word has length 110 [2022-03-20 17:29:35,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:35,925 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 377 transitions. [2022-03-20 17:29:35,925 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) [2022-03-20 17:29:35,925 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 377 transitions. [2022-03-20 17:29:35,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-03-20 17:29:35,926 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:35,926 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:29:35,926 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-20 17:29:35,927 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:35,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:35,927 INFO L85 PathProgramCache]: Analyzing trace with hash 820803447, now seen corresponding path program 1 times [2022-03-20 17:29:35,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:35,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [13707487] [2022-03-20 17:29:35,928 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:35,928 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-20 17:29:35,928 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:35,928 INFO L85 PathProgramCache]: Analyzing trace with hash 820803447, now seen corresponding path program 2 times [2022-03-20 17:29:35,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:35,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426882628] [2022-03-20 17:29:35,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:35,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:36,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:36,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:29:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:36,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:36,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:36,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:29:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:36,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:36,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:29:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:36,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:36,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 17:29:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:36,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 17:29:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:36,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 17:29:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:36,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:29:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:36,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:36,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:29:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:36,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-20 17:29:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:29:36,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:36,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426882628] [2022-03-20 17:29:36,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426882628] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:29:36,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526039745] [2022-03-20 17:29:36,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:29:36,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:29:36,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:29:36,784 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:29:36,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 17:29:38,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:29:38,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:29:38,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 17:29:38,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:29:38,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:38,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:29:38,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526039745] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:38,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:29:38,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 16 [2022-03-20 17:29:38,276 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:38,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [13707487] [2022-03-20 17:29:38,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [13707487] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:38,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:38,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:29:38,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418030762] [2022-03-20 17:29:38,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:38,277 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:29:38,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:38,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:29:38,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:29:38,278 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) [2022-03-20 17:29:38,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:38,680 INFO L93 Difference]: Finished difference Result 378 states and 421 transitions. [2022-03-20 17:29:38,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:29:38,681 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 [2022-03-20 17:29:38,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:38,682 INFO L225 Difference]: With dead ends: 378 [2022-03-20 17:29:38,682 INFO L226 Difference]: Without dead ends: 313 [2022-03-20 17:29:38,682 INFO L912 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 [2022-03-20 17:29:38,682 INFO L913 BasicCegarLoop]: 159 mSDtfsCounter, 69 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:29:38,683 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 363 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 17:29:38,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-03-20 17:29:38,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 291. [2022-03-20 17:29:38,806 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) [2022-03-20 17:29:38,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 318 transitions. [2022-03-20 17:29:38,807 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 318 transitions. Word has length 120 [2022-03-20 17:29:38,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:38,807 INFO L478 AbstractCegarLoop]: Abstraction has 291 states and 318 transitions. [2022-03-20 17:29:38,807 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) [2022-03-20 17:29:38,807 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 318 transitions. [2022-03-20 17:29:38,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-03-20 17:29:38,808 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:38,808 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:29:38,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-20 17:29:39,023 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 [2022-03-20 17:29:39,024 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:39,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:39,024 INFO L85 PathProgramCache]: Analyzing trace with hash -783486713, now seen corresponding path program 1 times [2022-03-20 17:29:39,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:39,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [73408173] [2022-03-20 17:29:39,025 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:39,025 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-20 17:29:39,025 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:39,026 INFO L85 PathProgramCache]: Analyzing trace with hash -783486713, now seen corresponding path program 2 times [2022-03-20 17:29:39,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:39,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576811273] [2022-03-20 17:29:39,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:39,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:29:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:29:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:29:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 17:29:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 17:29:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:29:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:29:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:29:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:29:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 17:29:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:39,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:39,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576811273] [2022-03-20 17:29:39,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576811273] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:39,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:39,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-20 17:29:39,546 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:39,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [73408173] [2022-03-20 17:29:39,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [73408173] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:39,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:39,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-20 17:29:39,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412036635] [2022-03-20 17:29:39,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:39,547 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 17:29:39,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:39,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 17:29:39,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:29:39,547 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) [2022-03-20 17:29:41,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:43,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:45,327 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:47,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:49,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:51,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:53,405 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:55,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:57,444 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:59,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:30:01,480 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:30:04,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:30:04,468 INFO L93 Difference]: Finished difference Result 345 states and 383 transitions. [2022-03-20 17:30:04,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 17:30:04,468 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 [2022-03-20 17:30:04,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:30:04,469 INFO L225 Difference]: With dead ends: 345 [2022-03-20 17:30:04,469 INFO L226 Difference]: Without dead ends: 303 [2022-03-20 17:30:04,470 INFO L912 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 [2022-03-20 17:30:04,470 INFO L913 BasicCegarLoop]: 128 mSDtfsCounter, 416 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 229 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2022-03-20 17:30:04,470 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 496 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1174 Invalid, 10 Unknown, 0 Unchecked, 24.5s Time] [2022-03-20 17:30:04,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-03-20 17:30:04,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 273. [2022-03-20 17:30:04,569 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) [2022-03-20 17:30:04,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 298 transitions. [2022-03-20 17:30:04,570 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 298 transitions. Word has length 126 [2022-03-20 17:30:04,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:30:04,572 INFO L478 AbstractCegarLoop]: Abstraction has 273 states and 298 transitions. [2022-03-20 17:30:04,572 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) [2022-03-20 17:30:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 298 transitions. [2022-03-20 17:30:04,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-03-20 17:30:04,573 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:30:04,573 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:30:04,573 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-20 17:30:04,573 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:30:04,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:30:04,574 INFO L85 PathProgramCache]: Analyzing trace with hash -375187371, now seen corresponding path program 1 times [2022-03-20 17:30:04,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:04,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1260386539] [2022-03-20 17:30:04,575 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:30:04,575 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-20 17:30:04,575 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:30:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash -375187371, now seen corresponding path program 2 times [2022-03-20 17:30:04,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:30:04,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110729433] [2022-03-20 17:30:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:30:04,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:30:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:04,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:30:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:04,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:30:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:04,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:30:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:04,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:04,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:30:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:04,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:04,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:30:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:04,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:30:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:04,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 17:30:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:04,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 17:30:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:04,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:30:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:04,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:30:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:05,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:30:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:05,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:05,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:30:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:05,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 17:30:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:05,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:30:05,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:30:05,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110729433] [2022-03-20 17:30:05,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110729433] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:05,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:05,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 17:30:05,045 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:30:05,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1260386539] [2022-03-20 17:30:05,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1260386539] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:05,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:05,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 17:30:05,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923109630] [2022-03-20 17:30:05,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:30:05,046 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 17:30:05,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:05,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 17:30:05,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:30:05,047 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) [2022-03-20 17:30:07,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:30:08,755 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:30:10,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:30:10,182 INFO L93 Difference]: Finished difference Result 323 states and 358 transitions. [2022-03-20 17:30:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 17:30:10,182 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 [2022-03-20 17:30:10,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:30:10,183 INFO L225 Difference]: With dead ends: 323 [2022-03-20 17:30:10,183 INFO L226 Difference]: Without dead ends: 303 [2022-03-20 17:30:10,184 INFO L912 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 [2022-03-20 17:30:10,184 INFO L913 BasicCegarLoop]: 146 mSDtfsCounter, 334 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 184 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-20 17:30:10,184 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 508 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 795 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-03-20 17:30:10,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-03-20 17:30:10,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 271. [2022-03-20 17:30:10,276 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) [2022-03-20 17:30:10,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 294 transitions. [2022-03-20 17:30:10,276 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 294 transitions. Word has length 126 [2022-03-20 17:30:10,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:30:10,276 INFO L478 AbstractCegarLoop]: Abstraction has 271 states and 294 transitions. [2022-03-20 17:30:10,277 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) [2022-03-20 17:30:10,277 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 294 transitions. [2022-03-20 17:30:10,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-03-20 17:30:10,277 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:30:10,277 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:30:10,278 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-20 17:30:10,278 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:30:10,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:30:10,278 INFO L85 PathProgramCache]: Analyzing trace with hash -347088914, now seen corresponding path program 1 times [2022-03-20 17:30:10,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:10,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1918266199] [2022-03-20 17:30:10,279 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:30:10,279 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-20 17:30:10,279 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:30:10,280 INFO L85 PathProgramCache]: Analyzing trace with hash -347088914, now seen corresponding path program 2 times [2022-03-20 17:30:10,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:30:10,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536957731] [2022-03-20 17:30:10,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:30:10,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:30:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:10,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:30:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:10,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:30:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:10,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:30:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:10,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:10,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:30:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:10,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:10,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:30:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:10,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:30:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:10,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 17:30:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:10,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 17:30:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:10,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:30:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:10,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:30:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:10,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:30:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:10,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:10,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:30:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:10,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-20 17:30:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:30:10,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:30:10,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536957731] [2022-03-20 17:30:10,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536957731] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:10,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:10,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-20 17:30:10,735 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:30:10,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1918266199] [2022-03-20 17:30:10,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1918266199] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:10,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:10,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-20 17:30:10,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332141283] [2022-03-20 17:30:10,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:30:10,736 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-20 17:30:10,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:10,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-20 17:30:10,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-03-20 17:30:10,736 INFO L87 Difference]: Start difference. First operand 271 states and 294 transitions. Second operand has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 6 states have internal predecessors, (93), 2 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) [2022-03-20 17:30:12,814 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:30:15,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:30:15,446 INFO L93 Difference]: Finished difference Result 323 states and 354 transitions. [2022-03-20 17:30:15,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 17:30:15,447 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 6 states have internal predecessors, (93), 2 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 127 [2022-03-20 17:30:15,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:30:15,448 INFO L225 Difference]: With dead ends: 323 [2022-03-20 17:30:15,448 INFO L226 Difference]: Without dead ends: 253 [2022-03-20 17:30:15,448 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2022-03-20 17:30:15,448 INFO L913 BasicCegarLoop]: 123 mSDtfsCounter, 207 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 115 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-03-20 17:30:15,449 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 460 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 941 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-03-20 17:30:15,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-03-20 17:30:15,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 233. [2022-03-20 17:30:15,525 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) [2022-03-20 17:30:15,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 248 transitions. [2022-03-20 17:30:15,526 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 248 transitions. Word has length 127 [2022-03-20 17:30:15,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:30:15,526 INFO L478 AbstractCegarLoop]: Abstraction has 233 states and 248 transitions. [2022-03-20 17:30:15,526 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 6 states have internal predecessors, (93), 2 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) [2022-03-20 17:30:15,526 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 248 transitions. [2022-03-20 17:30:15,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-03-20 17:30:15,527 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:30:15,527 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:30:15,527 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-20 17:30:15,527 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:30:15,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:30:15,527 INFO L85 PathProgramCache]: Analyzing trace with hash -558415743, now seen corresponding path program 1 times [2022-03-20 17:30:15,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:15,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1823698591] [2022-03-20 17:30:15,528 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:30:15,529 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-20 17:30:15,529 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:30:15,529 INFO L85 PathProgramCache]: Analyzing trace with hash -558415743, now seen corresponding path program 2 times [2022-03-20 17:30:15,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:30:15,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713915052] [2022-03-20 17:30:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:30:15,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:30:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:16,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:30:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:16,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:30:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:16,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:30:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:16,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:16,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:30:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:16,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:16,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:30:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:16,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:30:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:16,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 17:30:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:16,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 17:30:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:16,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:30:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:16,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:30:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:16,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:30:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:16,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:16,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:30:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:16,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 17:30:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:16,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-20 17:30:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:16,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:30:16,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:30:16,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713915052] [2022-03-20 17:30:16,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713915052] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:30:16,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451869431] [2022-03-20 17:30:16,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:30:16,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:30:16,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:30:16,424 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:30:16,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 17:30:17,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:30:17,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:30:17,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 1877 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 17:30:17,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:30:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:30:17,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:30:17,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451869431] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:17,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:30:17,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2022-03-20 17:30:17,765 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:30:17,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1823698591] [2022-03-20 17:30:17,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1823698591] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:17,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:17,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:30:17,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956598107] [2022-03-20 17:30:17,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:30:17,765 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 17:30:17,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:17,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 17:30:17,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-03-20 17:30:17,766 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) [2022-03-20 17:30:17,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:30:17,921 INFO L93 Difference]: Finished difference Result 361 states and 386 transitions. [2022-03-20 17:30:17,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 17:30:17,923 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 [2022-03-20 17:30:17,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:30:17,924 INFO L225 Difference]: With dead ends: 361 [2022-03-20 17:30:17,924 INFO L226 Difference]: Without dead ends: 235 [2022-03-20 17:30:17,926 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:30:17,927 INFO L913 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 [2022-03-20 17:30:17,927 INFO L914 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] [2022-03-20 17:30:17,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-03-20 17:30:18,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2022-03-20 17:30:18,017 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) [2022-03-20 17:30:18,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 250 transitions. [2022-03-20 17:30:18,017 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 250 transitions. Word has length 136 [2022-03-20 17:30:18,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:30:18,018 INFO L478 AbstractCegarLoop]: Abstraction has 235 states and 250 transitions. [2022-03-20 17:30:18,018 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) [2022-03-20 17:30:18,018 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 250 transitions. [2022-03-20 17:30:18,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-03-20 17:30:18,018 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:30:18,019 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:30:18,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-20 17:30:18,219 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 [2022-03-20 17:30:18,220 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:30:18,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:30:18,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1917947804, now seen corresponding path program 1 times [2022-03-20 17:30:18,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:18,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1287054590] [2022-03-20 17:30:18,221 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:30:18,221 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-20 17:30:18,221 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:30:18,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1917947804, now seen corresponding path program 2 times [2022-03-20 17:30:18,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:30:18,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353941624] [2022-03-20 17:30:18,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:30:18,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:30:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:30:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:30:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:30:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:30:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:30:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:30:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 17:30:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 17:30:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:30:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-20 17:30:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:30:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:30:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-20 17:30:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:19,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-20 17:30:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:19,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:30:19,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:30:19,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353941624] [2022-03-20 17:30:19,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353941624] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:30:19,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867583589] [2022-03-20 17:30:19,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:30:19,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:30:19,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:30:19,016 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:30:19,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 17:30:20,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:30:20,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:30:20,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 17:30:20,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:30:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-20 17:30:20,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:30:20,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867583589] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:20,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:30:20,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2022-03-20 17:30:20,584 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:30:20,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1287054590] [2022-03-20 17:30:20,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1287054590] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:20,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:20,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:30:20,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529377931] [2022-03-20 17:30:20,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:30:20,585 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 17:30:20,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:20,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 17:30:20,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-03-20 17:30:20,585 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) [2022-03-20 17:30:20,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:30:20,700 INFO L93 Difference]: Finished difference Result 355 states and 376 transitions. [2022-03-20 17:30:20,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 17:30:20,701 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 [2022-03-20 17:30:20,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:30:20,701 INFO L225 Difference]: With dead ends: 355 [2022-03-20 17:30:20,702 INFO L226 Difference]: Without dead ends: 237 [2022-03-20 17:30:20,702 INFO L912 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 [2022-03-20 17:30:20,702 INFO L913 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 [2022-03-20 17:30:20,702 INFO L914 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] [2022-03-20 17:30:20,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-03-20 17:30:20,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-03-20 17:30:20,806 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) [2022-03-20 17:30:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 252 transitions. [2022-03-20 17:30:20,807 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 252 transitions. Word has length 137 [2022-03-20 17:30:20,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:30:20,807 INFO L478 AbstractCegarLoop]: Abstraction has 237 states and 252 transitions. [2022-03-20 17:30:20,807 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) [2022-03-20 17:30:20,807 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 252 transitions. [2022-03-20 17:30:20,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-03-20 17:30:20,808 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:30:20,808 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:30:20,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-20 17:30:21,019 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 [2022-03-20 17:30:21,020 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:30:21,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:30:21,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1381815261, now seen corresponding path program 1 times [2022-03-20 17:30:21,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:21,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1915365712] [2022-03-20 17:30:21,021 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:30:21,021 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-20 17:30:21,021 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:30:21,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1381815261, now seen corresponding path program 2 times [2022-03-20 17:30:21,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:30:21,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101416687] [2022-03-20 17:30:21,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:30:21,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:30:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:21,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:30:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:21,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:30:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:21,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:30:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:21,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:21,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:30:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:21,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:21,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:30:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:21,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:30:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:21,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 17:30:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:21,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 17:30:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:21,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:30:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:21,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 17:30:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:30:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:21,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:21,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:30:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:21,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 17:30:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:21,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-20 17:30:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-20 17:30:21,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:30:21,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101416687] [2022-03-20 17:30:21,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101416687] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:30:21,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894832182] [2022-03-20 17:30:21,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:30:21,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:30:21,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:30:21,722 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:30:21,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process