/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 13:38:06,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 13:38:06,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 13:38:06,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-19 13:38:06,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-19 13:38:06,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-19 13:38:06,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-19 13:38:06,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-19 13:38:06,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-19 13:38:06,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-19 13:38:06,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-19 13:38:06,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-19 13:38:06,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 13:38:06,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 13:38:06,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 13:38:06,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 13:38:06,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 13:38:06,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 13:38:06,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 13:38:06,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 13:38:06,340 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 13:38:06,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 13:38:06,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 13:38:06,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 13:38:06,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 13:38:06,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-19 13:38:06,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-19 13:38:06,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-19 13:38:06,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-19 13:38:06,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-19 13:38:06,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-19 13:38:06,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-19 13:38:06,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-19 13:38:06,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-19 13:38:06,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-19 13:38:06,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-19 13:38:06,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-19 13:38:06,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-19 13:38:06,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-19 13:38:06,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 13:38:06,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 13:38:06,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 13:38:06,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-19 13:38:06,369 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 13:38:06,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 13:38:06,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 13:38:06,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 13:38:06,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 13:38:06,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 13:38:06,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 13:38:06,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 13:38:06,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 13:38:06,372 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 13:38:06,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 13:38:06,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 13:38:06,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 13:38:06,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 13:38:06,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 13:38:06,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 13:38:06,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 13:38:06,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 13:38:06,374 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 13:38:06,374 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 13:38:06,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 13:38:06,374 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-19 13:38:06,374 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 13:38:06,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 13:38:06,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 13:38:06,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 13:38:06,656 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 13:38:06,656 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 13:38:06,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c [2022-03-19 13:38:06,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fc3f6f7e/e059c058e3be4beb8589a2da2dd1c19d/FLAGb4184e260 [2022-03-19 13:38:07,281 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 13:38:07,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c [2022-03-19 13:38:07,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fc3f6f7e/e059c058e3be4beb8589a2da2dd1c19d/FLAGb4184e260 [2022-03-19 13:38:07,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fc3f6f7e/e059c058e3be4beb8589a2da2dd1c19d [2022-03-19 13:38:07,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 13:38:07,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 13:38:07,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 13:38:07,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 13:38:07,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 13:38:07,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 01:38:07" (1/1) ... [2022-03-19 13:38:07,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73faf7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:38:07, skipping insertion in model container [2022-03-19 13:38:07,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 01:38:07" (1/1) ... [2022-03-19 13:38:07,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 13:38:07,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 13:38:08,280 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c[62209,62222] [2022-03-19 13:38:08,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 13:38:08,493 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 13:38:08,547 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c[62209,62222] [2022-03-19 13:38:08,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 13:38:08,638 INFO L208 MainTranslator]: Completed translation [2022-03-19 13:38:08,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:38:08 WrapperNode [2022-03-19 13:38:08,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 13:38:08,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 13:38:08,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 13:38:08,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 13:38:08,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:38:08" (1/1) ... [2022-03-19 13:38:08,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:38:08" (1/1) ... [2022-03-19 13:38:08,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:38:08" (1/1) ... [2022-03-19 13:38:08,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:38:08" (1/1) ... [2022-03-19 13:38:08,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:38:08" (1/1) ... [2022-03-19 13:38:08,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:38:08" (1/1) ... [2022-03-19 13:38:08,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:38:08" (1/1) ... [2022-03-19 13:38:08,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 13:38:08,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 13:38:08,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 13:38:08,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 13:38:08,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:38:08" (1/1) ... [2022-03-19 13:38:08,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 13:38:08,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:38:08,866 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-19 13:38:08,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-19 13:38:08,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 13:38:08,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 13:38:08,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PVOID~0~X~$Pointer$~X~$Pointer$~X~~PBOOLEAN~0~TO~~NTSTATUS~0 [2022-03-19 13:38:08,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PKEYBOARD_INPUT_DATA~0~X~~POUTPUT_PACKET~0~X~~UCHAR~0~X~~PUCHAR~0~X~~PBOOLEAN~0~X~~PKEYBOARD_SCAN_STATE~0~TO~~BOOLEAN~0 [2022-03-19 13:38:08,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PVOID~0~X~~PVOID~0~X~~PVOID~0~TO~VOID [2022-03-19 13:38:08,901 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 13:38:08,901 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-19 13:38:08,901 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-03-19 13:38:08,901 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-03-19 13:38:08,902 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_IoCtl [2022-03-19 13:38:08,902 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-19 13:38:08,902 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-19 13:38:08,902 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-03-19 13:38:08,903 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_AddDevice [2022-03-19 13:38:08,903 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-03-19 13:38:08,905 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-03-19 13:38:08,905 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-03-19 13:38:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2022-03-19 13:38:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-03-19 13:38:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2022-03-19 13:38:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InitializationRoutine [2022-03-19 13:38:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_IsrHook [2022-03-19 13:38:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_ServiceCallback [2022-03-19 13:38:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Unload [2022-03-19 13:38:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-19 13:38:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 13:38:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-03-19 13:38:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-03-19 13:38:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-03-19 13:38:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-03-19 13:38:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-03-19 13:38:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-03-19 13:38:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-03-19 13:38:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-03-19 13:38:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-03-19 13:38:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-03-19 13:38:08,908 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-19 13:38:08,908 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-03-19 13:38:08,908 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-03-19 13:38:08,908 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-03-19 13:38:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-19 13:38:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-03-19 13:38:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-03-19 13:38:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-03-19 13:38:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-03-19 13:38:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-19 13:38:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-19 13:38:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-03-19 13:38:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-19 13:38:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-03-19 13:38:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-19 13:38:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-19 13:38:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-19 13:38:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-03-19 13:38:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-03-19 13:38:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-03-19 13:38:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-03-19 13:38:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-03-19 13:38:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-03-19 13:38:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-03-19 13:38:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-19 13:38:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-19 13:38:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-03-19 13:38:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-03-19 13:38:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-03-19 13:38:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-03-19 13:38:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-03-19 13:38:08,931 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-03-19 13:38:08,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-19 13:38:08,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-03-19 13:38:08,931 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-19 13:38:08,931 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-03-19 13:38:08,931 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-19 13:38:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-03-19 13:38:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-03-19 13:38:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-03-19 13:38:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-03-19 13:38:08,933 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-03-19 13:38:08,933 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-03-19 13:38:08,933 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-03-19 13:38:08,933 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-03-19 13:38:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-03-19 13:38:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-19 13:38:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-03-19 13:38:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-03-19 13:38:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 13:38:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 13:38:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 13:38:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 13:38:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-19 13:38:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 13:38:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-19 13:38:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-03-19 13:38:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-19 13:38:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-19 13:38:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-03-19 13:38:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-03-19 13:38:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-03-19 13:38:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-03-19 13:38:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-03-19 13:38:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-03-19 13:38:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-03-19 13:38:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-03-19 13:38:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-03-19 13:38:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-03-19 13:38:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-03-19 13:38:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 13:38:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 13:38:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-03-19 13:38:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-03-19 13:38:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-19 13:38:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-03-19 13:38:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-03-19 13:38:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-03-19 13:38:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-19 13:38:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-03-19 13:38:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-03-19 13:38:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-03-19 13:38:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-03-19 13:38:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-03-19 13:38:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-03-19 13:38:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-03-19 13:38:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-03-19 13:38:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-03-19 13:38:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-03-19 13:38:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-03-19 13:38:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-03-19 13:38:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-03-19 13:38:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-03-19 13:38:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-03-19 13:38:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-19 13:38:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-03-19 13:38:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-03-19 13:38:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-03-19 13:38:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-03-19 13:38:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-19 13:38:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-19 13:38:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-19 13:38:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-03-19 13:38:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-03-19 13:38:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-03-19 13:38:08,945 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-19 13:38:08,946 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-03-19 13:38:08,951 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-03-19 13:38:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-03-19 13:38:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-03-19 13:38:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-19 13:38:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-03-19 13:38:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-03-19 13:38:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-19 13:38:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-19 13:38:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-19 13:38:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-03-19 13:38:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-19 13:38:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-03-19 13:38:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-19 13:38:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_AddDevice [2022-03-19 13:38:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-03-19 13:38:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-03-19 13:38:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2022-03-19 13:38:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_IoCtl [2022-03-19 13:38:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-03-19 13:38:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2022-03-19 13:38:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InitializationRoutine [2022-03-19 13:38:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_IsrHook [2022-03-19 13:38:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_ServiceCallback [2022-03-19 13:38:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Unload [2022-03-19 13:38:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-03-19 13:38:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-19 13:38:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-19 13:38:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-19 13:38:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-19 13:38:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-19 13:38:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-19 13:38:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 13:38:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-03-19 13:38:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-03-19 13:38:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-03-19 13:38:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PVOID~0~X~$Pointer$~X~$Pointer$~X~~PBOOLEAN~0~TO~~NTSTATUS~0 [2022-03-19 13:38:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PKEYBOARD_INPUT_DATA~0~X~~POUTPUT_PACKET~0~X~~UCHAR~0~X~~PUCHAR~0~X~~PBOOLEAN~0~X~~PKEYBOARD_SCAN_STATE~0~TO~~BOOLEAN~0 [2022-03-19 13:38:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PVOID~0~X~~PVOID~0~X~~PVOID~0~TO~VOID [2022-03-19 13:38:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-19 13:38:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2022-03-19 13:38:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 13:38:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-19 13:38:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-19 13:38:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-03-19 13:38:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 13:38:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 13:38:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 13:38:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-19 13:38:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-19 13:38:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-19 13:38:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-19 13:38:09,392 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 13:38:09,395 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 13:38:09,416 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:09,449 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:38:09,449 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:38:09,449 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:09,456 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:38:09,456 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:38:09,470 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:09,482 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:38:09,482 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:38:09,482 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:09,492 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:38:09,493 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:38:09,497 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:09,510 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:38:09,510 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:38:09,844 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:09,851 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:38:09,851 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:38:09,851 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:09,862 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:38:09,862 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:38:09,863 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:09,880 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:38:09,880 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:38:09,894 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:09,899 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:38:09,900 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:38:09,900 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:09,904 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:38:09,905 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:38:09,905 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:09,912 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:38:09,913 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:38:09,940 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:09,946 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:38:09,946 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:38:09,946 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:09,951 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:38:09,951 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:38:09,961 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:10,083 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-03-19 13:38:10,083 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-03-19 13:38:10,095 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:10,117 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-19 13:38:10,118 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-19 13:38:10,130 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:10,136 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:38:10,136 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:38:10,142 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:10,961 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-19 13:38:10,961 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-19 13:38:11,108 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:11,114 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:38:11,114 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:38:11,223 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:11,233 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:38:11,233 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:38:11,247 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:11,267 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-19 13:38:11,267 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-19 13:38:11,275 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:11,285 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-19 13:38:11,285 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-19 13:38:11,310 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:11,324 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:38:11,325 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:38:11,327 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:11,358 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-19 13:38:11,358 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-19 13:38:11,361 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:38:11,367 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 13:38:11,368 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 13:38:11,401 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 13:38:11,418 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 13:38:11,418 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-19 13:38:11,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 01:38:11 BoogieIcfgContainer [2022-03-19 13:38:11,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 13:38:11,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 13:38:11,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 13:38:11,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 13:38:11,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 01:38:07" (1/3) ... [2022-03-19 13:38:11,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2457f507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 01:38:11, skipping insertion in model container [2022-03-19 13:38:11,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:38:08" (2/3) ... [2022-03-19 13:38:11,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2457f507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 01:38:11, skipping insertion in model container [2022-03-19 13:38:11,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 01:38:11" (3/3) ... [2022-03-19 13:38:11,430 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr.i.cil-2.c [2022-03-19 13:38:11,434 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 13:38:11,435 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 13:38:11,482 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 13:38:11,493 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-19 13:38:11,494 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 13:38:11,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 230 states have (on average 1.5) internal successors, (345), 248 states have internal predecessors, (345), 49 states have call successors, (49), 27 states have call predecessors, (49), 27 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49) [2022-03-19 13:38:11,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-19 13:38:11,536 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:38:11,537 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:38:11,537 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:38:11,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:38:11,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1774662017, now seen corresponding path program 1 times [2022-03-19 13:38:11,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:11,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1897467483] [2022-03-19 13:38:11,561 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:38:11,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1774662017, now seen corresponding path program 2 times [2022-03-19 13:38:11,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:38:11,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715792782] [2022-03-19 13:38:11,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:38:11,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:38:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:12,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:38:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:12,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:38:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:38:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:12,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:38:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:12,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:38:12,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:38:12,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715792782] [2022-03-19 13:38:12,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715792782] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:12,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:12,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:38:12,196 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:38:12,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1897467483] [2022-03-19 13:38:12,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1897467483] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:12,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:12,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:38:12,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827243522] [2022-03-19 13:38:12,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:38:12,201 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:38:12,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:12,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:38:12,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:38:12,227 INFO L87 Difference]: Start difference. First operand has 308 states, 230 states have (on average 1.5) internal successors, (345), 248 states have internal predecessors, (345), 49 states have call successors, (49), 27 states have call predecessors, (49), 27 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-19 13:38:14,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:16,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:38:16,065 INFO L93 Difference]: Finished difference Result 643 states and 953 transitions. [2022-03-19 13:38:16,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 13:38:16,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2022-03-19 13:38:16,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:38:16,081 INFO L225 Difference]: With dead ends: 643 [2022-03-19 13:38:16,081 INFO L226 Difference]: Without dead ends: 343 [2022-03-19 13:38:16,086 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-19 13:38:16,089 INFO L912 BasicCegarLoop]: 335 mSDtfsCounter, 597 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 220 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s 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, 3.6s IncrementalHoareTripleChecker+Time [2022-03-19 13:38:16,090 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 463 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 379 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-03-19 13:38:16,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-03-19 13:38:16,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 299. [2022-03-19 13:38:16,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 224 states have (on average 1.4464285714285714) internal successors, (324), 240 states have internal predecessors, (324), 49 states have call successors, (49), 27 states have call predecessors, (49), 25 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-03-19 13:38:16,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 407 transitions. [2022-03-19 13:38:16,179 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 407 transitions. Word has length 31 [2022-03-19 13:38:16,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:38:16,179 INFO L478 AbstractCegarLoop]: Abstraction has 299 states and 407 transitions. [2022-03-19 13:38:16,180 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-19 13:38:16,180 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 407 transitions. [2022-03-19 13:38:16,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-19 13:38:16,181 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:38:16,181 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:38:16,181 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 13:38:16,181 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:38:16,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:38:16,182 INFO L85 PathProgramCache]: Analyzing trace with hash 186314115, now seen corresponding path program 1 times [2022-03-19 13:38:16,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:16,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [207281698] [2022-03-19 13:38:16,182 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:38:16,183 INFO L85 PathProgramCache]: Analyzing trace with hash 186314115, now seen corresponding path program 2 times [2022-03-19 13:38:16,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:38:16,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302173326] [2022-03-19 13:38:16,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:38:16,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:38:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:16,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:38:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:16,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:38:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:16,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:38:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:16,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:38:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:38:16,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:38:16,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302173326] [2022-03-19 13:38:16,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302173326] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:16,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:16,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:38:16,571 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:38:16,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [207281698] [2022-03-19 13:38:16,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [207281698] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:16,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:16,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:38:16,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539342133] [2022-03-19 13:38:16,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:38:16,572 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 13:38:16,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:16,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 13:38:16,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-19 13:38:16,573 INFO L87 Difference]: Start difference. First operand 299 states and 407 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-19 13:38:18,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:21,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:23,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:38:23,839 INFO L93 Difference]: Finished difference Result 360 states and 492 transitions. [2022-03-19 13:38:23,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 13:38:23,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2022-03-19 13:38:23,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:38:23,847 INFO L225 Difference]: With dead ends: 360 [2022-03-19 13:38:23,847 INFO L226 Difference]: Without dead ends: 343 [2022-03-19 13:38:23,848 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-19 13:38:23,849 INFO L912 BasicCegarLoop]: 314 mSDtfsCounter, 395 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 148 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s 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, 7.0s IncrementalHoareTripleChecker+Time [2022-03-19 13:38:23,849 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 683 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1531 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-03-19 13:38:23,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-03-19 13:38:23,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 299. [2022-03-19 13:38:23,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 224 states have (on average 1.4419642857142858) internal successors, (323), 240 states have internal predecessors, (323), 49 states have call successors, (49), 27 states have call predecessors, (49), 25 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-03-19 13:38:23,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 406 transitions. [2022-03-19 13:38:23,893 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 406 transitions. Word has length 31 [2022-03-19 13:38:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:38:23,893 INFO L478 AbstractCegarLoop]: Abstraction has 299 states and 406 transitions. [2022-03-19 13:38:23,893 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-19 13:38:23,893 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 406 transitions. [2022-03-19 13:38:23,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-19 13:38:23,895 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:38:23,895 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:38:23,895 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 13:38:23,895 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:38:23,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:38:23,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1201516382, now seen corresponding path program 1 times [2022-03-19 13:38:23,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:23,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [552583989] [2022-03-19 13:38:23,897 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:38:23,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1201516382, now seen corresponding path program 2 times [2022-03-19 13:38:23,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:38:23,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383706219] [2022-03-19 13:38:23,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:38:23,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:38:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:24,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:38:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:24,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:38:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:24,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:38:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:24,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:38:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:24,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:38:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:24,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:38:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:24,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:38:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:24,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:38:24,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:38:24,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383706219] [2022-03-19 13:38:24,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383706219] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:24,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:24,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:38:24,314 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:38:24,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [552583989] [2022-03-19 13:38:24,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [552583989] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:24,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:24,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:38:24,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564829761] [2022-03-19 13:38:24,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:38:24,315 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 13:38:24,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:24,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 13:38:24,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-19 13:38:24,316 INFO L87 Difference]: Start difference. First operand 299 states and 406 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 13:38:26,393 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:30,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:38:30,902 INFO L93 Difference]: Finished difference Result 599 states and 829 transitions. [2022-03-19 13:38:30,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 13:38:30,903 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2022-03-19 13:38:30,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:38:30,905 INFO L225 Difference]: With dead ends: 599 [2022-03-19 13:38:30,905 INFO L226 Difference]: Without dead ends: 348 [2022-03-19 13:38:30,906 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-03-19 13:38:30,907 INFO L912 BasicCegarLoop]: 312 mSDtfsCounter, 609 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 1671 mSolverCounterSat, 252 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s 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, 6.2s IncrementalHoareTripleChecker+Time [2022-03-19 13:38:30,908 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 792 Invalid, 1924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 1671 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-03-19 13:38:30,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-03-19 13:38:30,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 303. [2022-03-19 13:38:30,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 227 states have (on average 1.4361233480176212) internal successors, (326), 243 states have internal predecessors, (326), 49 states have call successors, (49), 27 states have call predecessors, (49), 26 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2022-03-19 13:38:30,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 410 transitions. [2022-03-19 13:38:30,961 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 410 transitions. Word has length 53 [2022-03-19 13:38:30,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:38:30,961 INFO L478 AbstractCegarLoop]: Abstraction has 303 states and 410 transitions. [2022-03-19 13:38:30,962 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 13:38:30,962 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 410 transitions. [2022-03-19 13:38:30,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-19 13:38:30,963 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:38:30,964 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:38:30,964 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-19 13:38:30,964 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:38:30,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:38:30,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1078281185, now seen corresponding path program 1 times [2022-03-19 13:38:30,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:30,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [509708111] [2022-03-19 13:38:30,965 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:38:30,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1078281185, now seen corresponding path program 2 times [2022-03-19 13:38:30,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:38:30,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035306139] [2022-03-19 13:38:30,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:38:30,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:38:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:31,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:38:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:31,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:38:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:31,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:38:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:31,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:38:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:31,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:38:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:31,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:38:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:31,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:38:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:31,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:38:31,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:38:31,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035306139] [2022-03-19 13:38:31,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035306139] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:31,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:31,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:38:31,360 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:38:31,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [509708111] [2022-03-19 13:38:31,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [509708111] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:31,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:31,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:38:31,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327287326] [2022-03-19 13:38:31,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:38:31,362 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 13:38:31,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:31,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 13:38:31,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-19 13:38:31,363 INFO L87 Difference]: Start difference. First operand 303 states and 410 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 13:38:33,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:35,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:38:35,481 INFO L93 Difference]: Finished difference Result 492 states and 667 transitions. [2022-03-19 13:38:35,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 13:38:35,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 53 [2022-03-19 13:38:35,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:38:35,485 INFO L225 Difference]: With dead ends: 492 [2022-03-19 13:38:35,485 INFO L226 Difference]: Without dead ends: 431 [2022-03-19 13:38:35,486 INFO L911 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 [2022-03-19 13:38:35,486 INFO L912 BasicCegarLoop]: 364 mSDtfsCounter, 864 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 299 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s 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, 3.8s IncrementalHoareTripleChecker+Time [2022-03-19 13:38:35,487 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 615 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 808 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-03-19 13:38:35,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-03-19 13:38:35,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 374. [2022-03-19 13:38:35,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 288 states have (on average 1.3715277777777777) internal successors, (395), 292 states have internal predecessors, (395), 48 states have call successors, (48), 33 states have call predecessors, (48), 37 states have return successors, (55), 51 states have call predecessors, (55), 39 states have call successors, (55) [2022-03-19 13:38:35,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 498 transitions. [2022-03-19 13:38:35,539 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 498 transitions. Word has length 53 [2022-03-19 13:38:35,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:38:35,540 INFO L478 AbstractCegarLoop]: Abstraction has 374 states and 498 transitions. [2022-03-19 13:38:35,540 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 13:38:35,540 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 498 transitions. [2022-03-19 13:38:35,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-19 13:38:35,542 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:38:35,542 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:38:35,542 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-19 13:38:35,543 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:38:35,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:38:35,543 INFO L85 PathProgramCache]: Analyzing trace with hash 17478568, now seen corresponding path program 1 times [2022-03-19 13:38:35,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:35,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [253338552] [2022-03-19 13:38:35,544 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:38:35,544 INFO L85 PathProgramCache]: Analyzing trace with hash 17478568, now seen corresponding path program 2 times [2022-03-19 13:38:35,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:38:35,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247435675] [2022-03-19 13:38:35,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:38:35,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:38:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:35,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:38:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:35,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:38:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:35,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:38:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:35,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:38:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:35,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:38:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:35,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:38:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:35,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:38:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:35,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-19 13:38:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:38:35,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:38:35,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247435675] [2022-03-19 13:38:35,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247435675] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:35,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:35,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:38:35,920 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:38:35,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [253338552] [2022-03-19 13:38:35,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [253338552] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:35,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:35,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:38:35,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513206581] [2022-03-19 13:38:35,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:38:35,922 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 13:38:35,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:35,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 13:38:35,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-19 13:38:35,922 INFO L87 Difference]: Start difference. First operand 374 states and 498 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 13:38:38,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:39,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:38:39,691 INFO L93 Difference]: Finished difference Result 569 states and 751 transitions. [2022-03-19 13:38:39,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 13:38:39,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 60 [2022-03-19 13:38:39,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:38:39,694 INFO L225 Difference]: With dead ends: 569 [2022-03-19 13:38:39,694 INFO L226 Difference]: Without dead ends: 450 [2022-03-19 13:38:39,695 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-03-19 13:38:39,696 INFO L912 BasicCegarLoop]: 320 mSDtfsCounter, 974 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 330 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:38:39,696 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 489 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 650 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-03-19 13:38:39,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-19 13:38:39,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 410. [2022-03-19 13:38:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 325 states have (on average 1.3723076923076922) internal successors, (446), 327 states have internal predecessors, (446), 44 states have call successors, (44), 33 states have call predecessors, (44), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-03-19 13:38:39,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 545 transitions. [2022-03-19 13:38:39,766 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 545 transitions. Word has length 60 [2022-03-19 13:38:39,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:38:39,766 INFO L478 AbstractCegarLoop]: Abstraction has 410 states and 545 transitions. [2022-03-19 13:38:39,766 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 13:38:39,766 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 545 transitions. [2022-03-19 13:38:39,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-19 13:38:39,768 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:38:39,768 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:38:39,768 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-19 13:38:39,768 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:38:39,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:38:39,769 INFO L85 PathProgramCache]: Analyzing trace with hash -110356200, now seen corresponding path program 1 times [2022-03-19 13:38:39,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:39,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1672176069] [2022-03-19 13:38:39,769 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:38:39,769 INFO L85 PathProgramCache]: Analyzing trace with hash -110356200, now seen corresponding path program 2 times [2022-03-19 13:38:39,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:38:39,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831035981] [2022-03-19 13:38:39,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:38:39,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:38:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:39,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:38:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:40,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:38:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:40,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:38:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:40,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:38:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:40,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:38:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:40,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:38:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:40,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:38:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:40,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-19 13:38:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:38:40,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:38:40,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831035981] [2022-03-19 13:38:40,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831035981] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:40,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:40,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:38:40,196 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:38:40,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1672176069] [2022-03-19 13:38:40,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1672176069] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:40,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:40,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:38:40,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705509117] [2022-03-19 13:38:40,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:38:40,197 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 13:38:40,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:40,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 13:38:40,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-19 13:38:40,198 INFO L87 Difference]: Start difference. First operand 410 states and 545 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 13:38:42,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:45,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:38:45,868 INFO L93 Difference]: Finished difference Result 450 states and 594 transitions. [2022-03-19 13:38:45,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-19 13:38:45,868 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 60 [2022-03-19 13:38:45,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:38:45,871 INFO L225 Difference]: With dead ends: 450 [2022-03-19 13:38:45,871 INFO L226 Difference]: Without dead ends: 442 [2022-03-19 13:38:45,871 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2022-03-19 13:38:45,872 INFO L912 BasicCegarLoop]: 333 mSDtfsCounter, 1504 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 516 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-19 13:38:45,872 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 541 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 748 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-03-19 13:38:45,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-03-19 13:38:45,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 415. [2022-03-19 13:38:45,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 330 states have (on average 1.3696969696969696) internal successors, (452), 332 states have internal predecessors, (452), 44 states have call successors, (44), 33 states have call predecessors, (44), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-03-19 13:38:45,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 551 transitions. [2022-03-19 13:38:45,943 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 551 transitions. Word has length 60 [2022-03-19 13:38:45,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:38:45,943 INFO L478 AbstractCegarLoop]: Abstraction has 415 states and 551 transitions. [2022-03-19 13:38:45,943 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 13:38:45,943 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 551 transitions. [2022-03-19 13:38:45,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-19 13:38:45,944 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:38:45,945 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:38:45,945 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-19 13:38:45,945 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:38:45,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:38:45,945 INFO L85 PathProgramCache]: Analyzing trace with hash 400358010, now seen corresponding path program 1 times [2022-03-19 13:38:45,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:45,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1898250846] [2022-03-19 13:38:45,946 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:38:45,946 INFO L85 PathProgramCache]: Analyzing trace with hash 400358010, now seen corresponding path program 2 times [2022-03-19 13:38:45,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:38:45,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964497101] [2022-03-19 13:38:45,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:38:45,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:38:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:46,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:38:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:46,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:38:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:46,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:38:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:46,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:38:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:46,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:38:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:46,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:38:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:46,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:38:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:38:46,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:38:46,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964497101] [2022-03-19 13:38:46,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964497101] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:46,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:46,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:38:46,254 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:38:46,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1898250846] [2022-03-19 13:38:46,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1898250846] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:46,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:46,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:38:46,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889280595] [2022-03-19 13:38:46,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:38:46,255 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 13:38:46,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:46,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 13:38:46,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-19 13:38:46,256 INFO L87 Difference]: Start difference. First operand 415 states and 551 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 13:38:48,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:50,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:38:50,955 INFO L93 Difference]: Finished difference Result 433 states and 574 transitions. [2022-03-19 13:38:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 13:38:50,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2022-03-19 13:38:50,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:38:50,958 INFO L225 Difference]: With dead ends: 433 [2022-03-19 13:38:50,958 INFO L226 Difference]: Without dead ends: 429 [2022-03-19 13:38:50,958 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-03-19 13:38:50,959 INFO L912 BasicCegarLoop]: 298 mSDtfsCounter, 725 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 257 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:38:50,959 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 475 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 675 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-03-19 13:38:50,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-03-19 13:38:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 414. [2022-03-19 13:38:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 330 states have (on average 1.3636363636363635) internal successors, (450), 331 states have internal predecessors, (450), 43 states have call successors, (43), 33 states have call predecessors, (43), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-03-19 13:38:51,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 548 transitions. [2022-03-19 13:38:51,042 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 548 transitions. Word has length 62 [2022-03-19 13:38:51,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:38:51,043 INFO L478 AbstractCegarLoop]: Abstraction has 414 states and 548 transitions. [2022-03-19 13:38:51,043 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 13:38:51,043 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 548 transitions. [2022-03-19 13:38:51,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-19 13:38:51,044 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:38:51,044 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:38:51,044 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-19 13:38:51,044 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:38:51,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:38:51,045 INFO L85 PathProgramCache]: Analyzing trace with hash 466089939, now seen corresponding path program 1 times [2022-03-19 13:38:51,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:51,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [549514678] [2022-03-19 13:38:51,045 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:38:51,045 INFO L85 PathProgramCache]: Analyzing trace with hash 466089939, now seen corresponding path program 2 times [2022-03-19 13:38:51,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:38:51,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346823080] [2022-03-19 13:38:51,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:38:51,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:38:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:51,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:38:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:51,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:38:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:51,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:38:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:51,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:38:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:51,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:38:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:51,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:38:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:51,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:38:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:51,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-19 13:38:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:38:51,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:38:51,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346823080] [2022-03-19 13:38:51,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346823080] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:51,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:51,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:38:51,413 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:38:51,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [549514678] [2022-03-19 13:38:51,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [549514678] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:51,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:51,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:38:51,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886509052] [2022-03-19 13:38:51,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:38:51,414 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 13:38:51,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:51,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 13:38:51,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-19 13:38:51,415 INFO L87 Difference]: Start difference. First operand 414 states and 548 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 13:38:53,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:38:56,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:38:56,717 INFO L93 Difference]: Finished difference Result 448 states and 589 transitions. [2022-03-19 13:38:56,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-19 13:38:56,717 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 61 [2022-03-19 13:38:56,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:38:56,720 INFO L225 Difference]: With dead ends: 448 [2022-03-19 13:38:56,720 INFO L226 Difference]: Without dead ends: 440 [2022-03-19 13:38:56,720 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2022-03-19 13:38:56,721 INFO L912 BasicCegarLoop]: 334 mSDtfsCounter, 1683 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 559 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:38:56,721 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1692 Valid, 606 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 887 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-03-19 13:38:56,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-03-19 13:38:56,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 415. [2022-03-19 13:38:56,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 331 states have (on average 1.3625377643504533) internal successors, (451), 332 states have internal predecessors, (451), 43 states have call successors, (43), 33 states have call predecessors, (43), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-03-19 13:38:56,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 549 transitions. [2022-03-19 13:38:56,795 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 549 transitions. Word has length 61 [2022-03-19 13:38:56,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:38:56,795 INFO L478 AbstractCegarLoop]: Abstraction has 415 states and 549 transitions. [2022-03-19 13:38:56,795 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 13:38:56,795 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 549 transitions. [2022-03-19 13:38:56,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-19 13:38:56,796 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:38:56,797 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:38:56,797 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-19 13:38:56,797 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:38:56,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:38:56,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1325055407, now seen corresponding path program 1 times [2022-03-19 13:38:56,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:56,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [12130406] [2022-03-19 13:38:56,798 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:38:56,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1325055407, now seen corresponding path program 2 times [2022-03-19 13:38:56,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:38:56,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303827479] [2022-03-19 13:38:56,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:38:56,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:38:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:56,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:38:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:57,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:38:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:57,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:38:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:57,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:38:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:57,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:38:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:57,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:38:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:57,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:38:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:57,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-19 13:38:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:38:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:38:57,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:38:57,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303827479] [2022-03-19 13:38:57,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303827479] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:57,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:57,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:38:57,170 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:38:57,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [12130406] [2022-03-19 13:38:57,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [12130406] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:38:57,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:38:57,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:38:57,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351654044] [2022-03-19 13:38:57,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:38:57,170 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 13:38:57,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:38:57,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 13:38:57,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-19 13:38:57,171 INFO L87 Difference]: Start difference. First operand 415 states and 549 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 13:38:59,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:02,284 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:03,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:39:03,525 INFO L93 Difference]: Finished difference Result 442 states and 581 transitions. [2022-03-19 13:39:03,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 13:39:03,525 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2022-03-19 13:39:03,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:39:03,527 INFO L225 Difference]: With dead ends: 442 [2022-03-19 13:39:03,528 INFO L226 Difference]: Without dead ends: 389 [2022-03-19 13:39:03,528 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2022-03-19 13:39:03,529 INFO L912 BasicCegarLoop]: 336 mSDtfsCounter, 1385 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 451 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-03-19 13:39:03,529 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1393 Valid, 609 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 871 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-03-19 13:39:03,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-03-19 13:39:03,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 371. [2022-03-19 13:39:03,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 296 states have (on average 1.3817567567567568) internal successors, (409), 302 states have internal predecessors, (409), 42 states have call successors, (42), 32 states have call predecessors, (42), 32 states have return successors, (42), 37 states have call predecessors, (42), 36 states have call successors, (42) [2022-03-19 13:39:03,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 493 transitions. [2022-03-19 13:39:03,599 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 493 transitions. Word has length 62 [2022-03-19 13:39:03,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:39:03,599 INFO L478 AbstractCegarLoop]: Abstraction has 371 states and 493 transitions. [2022-03-19 13:39:03,599 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 13:39:03,599 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 493 transitions. [2022-03-19 13:39:03,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-19 13:39:03,601 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:39:03,601 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:39:03,601 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-19 13:39:03,601 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:39:03,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:39:03,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1052170321, now seen corresponding path program 1 times [2022-03-19 13:39:03,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:03,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2024477494] [2022-03-19 13:39:03,602 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:39:03,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1052170321, now seen corresponding path program 2 times [2022-03-19 13:39:03,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:39:03,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980202394] [2022-03-19 13:39:03,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:39:03,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:39:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:03,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:39:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:03,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:39:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:03,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:39:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:03,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:39:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:03,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:39:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:03,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:39:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:04,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:39:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:04,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-19 13:39:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:04,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 13:39:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:39:04,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:39:04,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980202394] [2022-03-19 13:39:04,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980202394] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:04,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:04,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 13:39:04,124 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:39:04,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2024477494] [2022-03-19 13:39:04,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2024477494] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:04,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:04,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 13:39:04,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817251430] [2022-03-19 13:39:04,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:39:04,125 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 13:39:04,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:04,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 13:39:04,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-19 13:39:04,126 INFO L87 Difference]: Start difference. First operand 371 states and 493 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 13:39:06,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:08,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:10,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:39:10,180 INFO L93 Difference]: Finished difference Result 417 states and 550 transitions. [2022-03-19 13:39:10,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 13:39:10,181 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 72 [2022-03-19 13:39:10,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:39:10,183 INFO L225 Difference]: With dead ends: 417 [2022-03-19 13:39:10,183 INFO L226 Difference]: Without dead ends: 409 [2022-03-19 13:39:10,184 INFO L911 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 [2022-03-19 13:39:10,184 INFO L912 BasicCegarLoop]: 278 mSDtfsCounter, 884 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 274 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:39:10,184 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 572 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1342 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-03-19 13:39:10,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-03-19 13:39:10,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 386. [2022-03-19 13:39:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 309 states have (on average 1.3754045307443366) internal successors, (425), 314 states have internal predecessors, (425), 42 states have call successors, (42), 32 states have call predecessors, (42), 34 states have return successors, (44), 39 states have call predecessors, (44), 36 states have call successors, (44) [2022-03-19 13:39:10,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 511 transitions. [2022-03-19 13:39:10,276 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 511 transitions. Word has length 72 [2022-03-19 13:39:10,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:39:10,276 INFO L478 AbstractCegarLoop]: Abstraction has 386 states and 511 transitions. [2022-03-19 13:39:10,277 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 13:39:10,277 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 511 transitions. [2022-03-19 13:39:10,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-19 13:39:10,278 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:39:10,278 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:39:10,278 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-19 13:39:10,278 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:39:10,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:39:10,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2144673722, now seen corresponding path program 1 times [2022-03-19 13:39:10,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:10,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [999335915] [2022-03-19 13:39:10,281 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:39:10,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2144673722, now seen corresponding path program 2 times [2022-03-19 13:39:10,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:39:10,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342787348] [2022-03-19 13:39:10,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:39:10,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:39:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:10,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:39:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:10,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:39:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:10,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:39:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:10,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:39:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:10,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:39:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:10,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:39:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:10,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:39:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:10,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-19 13:39:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:10,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 13:39:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:39:10,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:39:10,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342787348] [2022-03-19 13:39:10,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342787348] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:10,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:10,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 13:39:10,716 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:39:10,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [999335915] [2022-03-19 13:39:10,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [999335915] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:10,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:10,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 13:39:10,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721624403] [2022-03-19 13:39:10,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:39:10,716 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 13:39:10,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:10,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 13:39:10,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-19 13:39:10,718 INFO L87 Difference]: Start difference. First operand 386 states and 511 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 13:39:12,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:15,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:16,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:18,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:39:18,995 INFO L93 Difference]: Finished difference Result 417 states and 549 transitions. [2022-03-19 13:39:18,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 13:39:18,996 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 73 [2022-03-19 13:39:18,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:39:19,000 INFO L225 Difference]: With dead ends: 417 [2022-03-19 13:39:19,000 INFO L226 Difference]: Without dead ends: 409 [2022-03-19 13:39:19,000 INFO L911 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 [2022-03-19 13:39:19,002 INFO L912 BasicCegarLoop]: 279 mSDtfsCounter, 1057 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 343 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-03-19 13:39:19,002 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1069 Valid, 665 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 1621 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-03-19 13:39:19,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-03-19 13:39:19,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 387. [2022-03-19 13:39:19,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 310 states have (on average 1.3741935483870968) internal successors, (426), 315 states have internal predecessors, (426), 42 states have call successors, (42), 32 states have call predecessors, (42), 34 states have return successors, (44), 39 states have call predecessors, (44), 36 states have call successors, (44) [2022-03-19 13:39:19,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 512 transitions. [2022-03-19 13:39:19,082 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 512 transitions. Word has length 73 [2022-03-19 13:39:19,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:39:19,083 INFO L478 AbstractCegarLoop]: Abstraction has 387 states and 512 transitions. [2022-03-19 13:39:19,083 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 13:39:19,083 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 512 transitions. [2022-03-19 13:39:19,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-19 13:39:19,085 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:39:19,085 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:39:19,086 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-19 13:39:19,086 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:39:19,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:39:19,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1821545128, now seen corresponding path program 1 times [2022-03-19 13:39:19,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:19,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1145817623] [2022-03-19 13:39:19,086 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:39:19,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1821545128, now seen corresponding path program 2 times [2022-03-19 13:39:19,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:39:19,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203400542] [2022-03-19 13:39:19,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:39:19,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:39:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:19,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:39:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:19,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:39:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:19,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:39:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:19,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:39:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:19,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:39:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:19,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:39:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:19,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:39:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:19,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-19 13:39:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:19,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 13:39:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:19,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:39:19,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:39:19,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203400542] [2022-03-19 13:39:19,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203400542] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:19,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:19,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:39:19,435 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:39:19,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1145817623] [2022-03-19 13:39:19,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1145817623] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:19,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:19,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:39:19,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369173599] [2022-03-19 13:39:19,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:39:19,436 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 13:39:19,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:19,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 13:39:19,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-19 13:39:19,437 INFO L87 Difference]: Start difference. First operand 387 states and 512 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-19 13:39:21,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:24,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:39:24,066 INFO L93 Difference]: Finished difference Result 419 states and 554 transitions. [2022-03-19 13:39:24,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 13:39:24,066 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 74 [2022-03-19 13:39:24,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:39:24,068 INFO L225 Difference]: With dead ends: 419 [2022-03-19 13:39:24,068 INFO L226 Difference]: Without dead ends: 396 [2022-03-19 13:39:24,069 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-03-19 13:39:24,069 INFO L912 BasicCegarLoop]: 273 mSDtfsCounter, 979 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 311 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:39:24,069 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [989 Valid, 457 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 616 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-03-19 13:39:24,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-03-19 13:39:24,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 381. [2022-03-19 13:39:24,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 305 states have (on average 1.3639344262295081) internal successors, (416), 309 states have internal predecessors, (416), 41 states have call successors, (41), 32 states have call predecessors, (41), 34 states have return successors, (44), 39 states have call predecessors, (44), 36 states have call successors, (44) [2022-03-19 13:39:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 501 transitions. [2022-03-19 13:39:24,149 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 501 transitions. Word has length 74 [2022-03-19 13:39:24,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:39:24,149 INFO L478 AbstractCegarLoop]: Abstraction has 381 states and 501 transitions. [2022-03-19 13:39:24,149 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-19 13:39:24,149 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 501 transitions. [2022-03-19 13:39:24,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-19 13:39:24,151 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:39:24,151 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:39:24,151 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-19 13:39:24,151 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:39:24,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:39:24,151 INFO L85 PathProgramCache]: Analyzing trace with hash 937494245, now seen corresponding path program 1 times [2022-03-19 13:39:24,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:24,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1591082439] [2022-03-19 13:39:24,152 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:39:24,152 INFO L85 PathProgramCache]: Analyzing trace with hash 937494245, now seen corresponding path program 2 times [2022-03-19 13:39:24,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:39:24,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226145841] [2022-03-19 13:39:24,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:39:24,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:39:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:24,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:39:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:24,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:39:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:24,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:39:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:24,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:39:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:24,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:39:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:24,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:39:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:24,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:39:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:24,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-19 13:39:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:24,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 13:39:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:24,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:39:24,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:39:24,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226145841] [2022-03-19 13:39:24,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226145841] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:24,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:24,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:39:24,501 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:39:24,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1591082439] [2022-03-19 13:39:24,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1591082439] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:24,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:24,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:39:24,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093138223] [2022-03-19 13:39:24,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:39:24,502 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 13:39:24,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:24,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 13:39:24,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-19 13:39:24,502 INFO L87 Difference]: Start difference. First operand 381 states and 501 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 13:39:26,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:29,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:39:29,068 INFO L93 Difference]: Finished difference Result 437 states and 561 transitions. [2022-03-19 13:39:29,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 13:39:29,068 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 77 [2022-03-19 13:39:29,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:39:29,070 INFO L225 Difference]: With dead ends: 437 [2022-03-19 13:39:29,070 INFO L226 Difference]: Without dead ends: 374 [2022-03-19 13:39:29,071 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-03-19 13:39:29,071 INFO L912 BasicCegarLoop]: 310 mSDtfsCounter, 869 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 272 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-03-19 13:39:29,071 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 628 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 961 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-03-19 13:39:29,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-03-19 13:39:29,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 345. [2022-03-19 13:39:29,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 274 states have (on average 1.3503649635036497) internal successors, (370), 278 states have internal predecessors, (370), 38 states have call successors, (38), 30 states have call predecessors, (38), 32 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2022-03-19 13:39:29,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 447 transitions. [2022-03-19 13:39:29,144 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 447 transitions. Word has length 77 [2022-03-19 13:39:29,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:39:29,144 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 447 transitions. [2022-03-19 13:39:29,145 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 13:39:29,145 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 447 transitions. [2022-03-19 13:39:29,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-19 13:39:29,146 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:39:29,146 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:39:29,146 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-19 13:39:29,146 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:39:29,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:39:29,146 INFO L85 PathProgramCache]: Analyzing trace with hash 641442499, now seen corresponding path program 1 times [2022-03-19 13:39:29,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:29,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [543065739] [2022-03-19 13:39:29,147 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:39:29,147 INFO L85 PathProgramCache]: Analyzing trace with hash 641442499, now seen corresponding path program 2 times [2022-03-19 13:39:29,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:39:29,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573246323] [2022-03-19 13:39:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:39:29,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:39:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:29,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:39:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:29,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:39:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:29,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:39:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:29,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:39:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:29,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:39:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:29,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:39:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:29,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:39:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:29,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-19 13:39:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:29,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 13:39:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:29,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:39:29,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:39:29,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573246323] [2022-03-19 13:39:29,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573246323] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:29,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:29,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 13:39:29,536 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:39:29,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [543065739] [2022-03-19 13:39:29,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [543065739] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:29,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:29,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 13:39:29,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81361908] [2022-03-19 13:39:29,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:39:29,537 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 13:39:29,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:29,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 13:39:29,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-19 13:39:29,537 INFO L87 Difference]: Start difference. First operand 345 states and 447 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 13:39:31,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:34,687 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:36,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:39:36,986 INFO L93 Difference]: Finished difference Result 417 states and 534 transitions. [2022-03-19 13:39:36,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 13:39:36,986 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2022-03-19 13:39:36,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:39:36,988 INFO L225 Difference]: With dead ends: 417 [2022-03-19 13:39:36,988 INFO L226 Difference]: Without dead ends: 359 [2022-03-19 13:39:36,988 INFO L911 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 [2022-03-19 13:39:36,989 INFO L912 BasicCegarLoop]: 279 mSDtfsCounter, 867 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 305 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-03-19 13:39:36,989 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 791 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1784 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-03-19 13:39:36,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-03-19 13:39:37,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 344. [2022-03-19 13:39:37,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 273 states have (on average 1.336996336996337) internal successors, (365), 277 states have internal predecessors, (365), 38 states have call successors, (38), 30 states have call predecessors, (38), 32 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2022-03-19 13:39:37,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 442 transitions. [2022-03-19 13:39:37,066 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 442 transitions. Word has length 75 [2022-03-19 13:39:37,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:39:37,066 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 442 transitions. [2022-03-19 13:39:37,066 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 13:39:37,066 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 442 transitions. [2022-03-19 13:39:37,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-19 13:39:37,067 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:39:37,067 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:39:37,068 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-19 13:39:37,068 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:39:37,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:39:37,068 INFO L85 PathProgramCache]: Analyzing trace with hash 476602328, now seen corresponding path program 1 times [2022-03-19 13:39:37,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:37,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [958240714] [2022-03-19 13:39:37,068 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:39:37,069 INFO L85 PathProgramCache]: Analyzing trace with hash 476602328, now seen corresponding path program 2 times [2022-03-19 13:39:37,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:39:37,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862905028] [2022-03-19 13:39:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:39:37,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:39:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:37,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:39:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:37,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:39:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:39:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:37,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:39:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:37,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:39:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:37,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:39:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:37,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:39:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:37,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-19 13:39:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:37,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 13:39:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:39:37,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:39:37,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862905028] [2022-03-19 13:39:37,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862905028] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:37,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:37,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 13:39:37,501 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:39:37,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [958240714] [2022-03-19 13:39:37,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [958240714] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:37,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:37,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 13:39:37,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616066060] [2022-03-19 13:39:37,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:39:37,501 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 13:39:37,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:37,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 13:39:37,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-19 13:39:37,502 INFO L87 Difference]: Start difference. First operand 344 states and 442 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-19 13:39:39,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:45,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:39:45,576 INFO L93 Difference]: Finished difference Result 422 states and 536 transitions. [2022-03-19 13:39:45,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-19 13:39:45,577 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 76 [2022-03-19 13:39:45,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:39:45,578 INFO L225 Difference]: With dead ends: 422 [2022-03-19 13:39:45,579 INFO L226 Difference]: Without dead ends: 379 [2022-03-19 13:39:45,579 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2022-03-19 13:39:45,580 INFO L912 BasicCegarLoop]: 303 mSDtfsCounter, 1036 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 373 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:39:45,580 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 745 Invalid, 2064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 1690 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-03-19 13:39:45,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-03-19 13:39:45,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 344. [2022-03-19 13:39:45,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 273 states have (on average 1.3296703296703296) internal successors, (363), 277 states have internal predecessors, (363), 38 states have call successors, (38), 30 states have call predecessors, (38), 32 states have return successors, (38), 36 states have call predecessors, (38), 33 states have call successors, (38) [2022-03-19 13:39:45,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 439 transitions. [2022-03-19 13:39:45,669 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 439 transitions. Word has length 76 [2022-03-19 13:39:45,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:39:45,669 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 439 transitions. [2022-03-19 13:39:45,670 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-19 13:39:45,670 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 439 transitions. [2022-03-19 13:39:45,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-19 13:39:45,671 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:39:45,671 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:39:45,671 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-19 13:39:45,671 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:39:45,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:39:45,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1346047832, now seen corresponding path program 1 times [2022-03-19 13:39:45,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:45,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [674102440] [2022-03-19 13:39:45,672 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:39:45,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1346047832, now seen corresponding path program 2 times [2022-03-19 13:39:45,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:39:45,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960284456] [2022-03-19 13:39:45,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:39:45,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:39:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:45,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:39:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:45,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:39:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:45,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:39:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:45,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:39:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:45,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:39:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:45,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:39:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:45,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:39:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:45,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-19 13:39:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:45,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:39:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:45,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:39:45,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:39:45,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960284456] [2022-03-19 13:39:45,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960284456] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:45,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:45,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:39:45,978 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:39:45,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [674102440] [2022-03-19 13:39:45,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [674102440] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:45,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:45,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:39:45,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330544576] [2022-03-19 13:39:45,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:39:45,979 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 13:39:45,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:45,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 13:39:45,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-19 13:39:45,980 INFO L87 Difference]: Start difference. First operand 344 states and 439 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 13:39:48,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:50,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:39:50,444 INFO L93 Difference]: Finished difference Result 378 states and 480 transitions. [2022-03-19 13:39:50,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 13:39:50,444 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2022-03-19 13:39:50,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:39:50,445 INFO L225 Difference]: With dead ends: 378 [2022-03-19 13:39:50,445 INFO L226 Difference]: Without dead ends: 355 [2022-03-19 13:39:50,446 INFO L911 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 [2022-03-19 13:39:50,447 INFO L912 BasicCegarLoop]: 272 mSDtfsCounter, 870 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 296 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-03-19 13:39:50,447 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 546 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 861 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-03-19 13:39:50,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-03-19 13:39:50,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 335. [2022-03-19 13:39:50,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 267 states have (on average 1.3333333333333333) internal successors, (356), 271 states have internal predecessors, (356), 37 states have call successors, (37), 29 states have call predecessors, (37), 30 states have return successors, (36), 34 states have call predecessors, (36), 32 states have call successors, (36) [2022-03-19 13:39:50,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 429 transitions. [2022-03-19 13:39:50,541 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 429 transitions. Word has length 76 [2022-03-19 13:39:50,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:39:50,541 INFO L478 AbstractCegarLoop]: Abstraction has 335 states and 429 transitions. [2022-03-19 13:39:50,541 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 13:39:50,541 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 429 transitions. [2022-03-19 13:39:50,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-19 13:39:50,542 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:39:50,542 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:39:50,542 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-19 13:39:50,543 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:39:50,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:39:50,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2131421, now seen corresponding path program 1 times [2022-03-19 13:39:50,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:50,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [556775225] [2022-03-19 13:39:50,543 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:39:50,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2131421, now seen corresponding path program 2 times [2022-03-19 13:39:50,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:39:50,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133084972] [2022-03-19 13:39:50,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:39:50,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:39:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:50,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:39:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:50,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:39:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:50,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:39:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:50,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:39:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:50,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:39:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:50,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:39:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:50,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:39:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:50,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-19 13:39:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:50,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 13:39:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:50,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:39:50,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:39:50,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133084972] [2022-03-19 13:39:50,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133084972] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:50,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:50,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 13:39:50,951 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:39:50,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [556775225] [2022-03-19 13:39:50,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [556775225] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:50,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:50,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 13:39:50,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393901733] [2022-03-19 13:39:50,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:39:50,951 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 13:39:50,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:50,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 13:39:50,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-03-19 13:39:50,952 INFO L87 Difference]: Start difference. First operand 335 states and 429 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-19 13:39:53,042 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:39:56,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:39:56,981 INFO L93 Difference]: Finished difference Result 398 states and 505 transitions. [2022-03-19 13:39:56,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 13:39:56,981 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) Word has length 78 [2022-03-19 13:39:56,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:39:56,983 INFO L225 Difference]: With dead ends: 398 [2022-03-19 13:39:56,983 INFO L226 Difference]: Without dead ends: 354 [2022-03-19 13:39:56,984 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-03-19 13:39:56,984 INFO L912 BasicCegarLoop]: 269 mSDtfsCounter, 399 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 2518 mSolverCounterSat, 139 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2518 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-03-19 13:39:56,984 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 935 Invalid, 2658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2518 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-03-19 13:39:56,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-19 13:39:57,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 334. [2022-03-19 13:39:57,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 266 states have (on average 1.330827067669173) internal successors, (354), 270 states have internal predecessors, (354), 37 states have call successors, (37), 29 states have call predecessors, (37), 30 states have return successors, (36), 34 states have call predecessors, (36), 32 states have call successors, (36) [2022-03-19 13:39:57,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 427 transitions. [2022-03-19 13:39:57,063 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 427 transitions. Word has length 78 [2022-03-19 13:39:57,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:39:57,064 INFO L478 AbstractCegarLoop]: Abstraction has 334 states and 427 transitions. [2022-03-19 13:39:57,064 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-19 13:39:57,064 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 427 transitions. [2022-03-19 13:39:57,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-19 13:39:57,065 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:39:57,065 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:39:57,065 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-19 13:39:57,065 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:39:57,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:39:57,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1889602735, now seen corresponding path program 1 times [2022-03-19 13:39:57,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:57,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [357928310] [2022-03-19 13:39:57,066 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:39:57,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1889602735, now seen corresponding path program 2 times [2022-03-19 13:39:57,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:39:57,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277926905] [2022-03-19 13:39:57,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:39:57,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:39:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:57,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:39:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:57,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:39:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:57,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:39:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:57,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:39:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:57,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:39:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:57,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:39:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:57,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:39:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:57,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-19 13:39:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:57,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:39:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:39:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:39:57,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:39:57,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277926905] [2022-03-19 13:39:57,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277926905] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:57,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:57,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 13:39:57,557 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:39:57,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [357928310] [2022-03-19 13:39:57,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [357928310] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:39:57,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:39:57,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 13:39:57,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933232297] [2022-03-19 13:39:57,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:39:57,558 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-19 13:39:57,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:39:57,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-19 13:39:57,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-19 13:39:57,559 INFO L87 Difference]: Start difference. First operand 334 states and 427 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-19 13:39:59,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:04,154 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:08,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:40:08,442 INFO L93 Difference]: Finished difference Result 475 states and 607 transitions. [2022-03-19 13:40:08,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 13:40:08,442 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2022-03-19 13:40:08,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:40:08,444 INFO L225 Difference]: With dead ends: 475 [2022-03-19 13:40:08,444 INFO L226 Difference]: Without dead ends: 367 [2022-03-19 13:40:08,445 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-03-19 13:40:08,446 INFO L912 BasicCegarLoop]: 267 mSDtfsCounter, 485 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 170 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:40:08,446 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 975 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 2602 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2022-03-19 13:40:08,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-03-19 13:40:08,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 338. [2022-03-19 13:40:08,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 270 states have (on average 1.3296296296296297) internal successors, (359), 275 states have internal predecessors, (359), 36 states have call successors, (36), 29 states have call predecessors, (36), 31 states have return successors, (37), 33 states have call predecessors, (37), 31 states have call successors, (37) [2022-03-19 13:40:08,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 432 transitions. [2022-03-19 13:40:08,529 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 432 transitions. Word has length 79 [2022-03-19 13:40:08,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:40:08,529 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 432 transitions. [2022-03-19 13:40:08,530 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-19 13:40:08,530 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 432 transitions. [2022-03-19 13:40:08,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-19 13:40:08,531 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:40:08,531 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:40:08,531 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-19 13:40:08,531 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:40:08,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:40:08,531 INFO L85 PathProgramCache]: Analyzing trace with hash -2045108737, now seen corresponding path program 1 times [2022-03-19 13:40:08,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:08,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1768526736] [2022-03-19 13:40:08,532 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:40:08,532 INFO L85 PathProgramCache]: Analyzing trace with hash -2045108737, now seen corresponding path program 2 times [2022-03-19 13:40:08,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:40:08,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135173122] [2022-03-19 13:40:08,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:40:08,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:40:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:08,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:40:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:08,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:40:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:08,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:40:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:08,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:08,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:40:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:08,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:08,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:40:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:08,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-19 13:40:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:08,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 13:40:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:08,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:40:08,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:40:08,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135173122] [2022-03-19 13:40:08,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135173122] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:08,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:08,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 13:40:08,936 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:40:08,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1768526736] [2022-03-19 13:40:08,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1768526736] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:08,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:08,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 13:40:08,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735081113] [2022-03-19 13:40:08,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:40:08,937 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 13:40:08,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:08,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 13:40:08,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-19 13:40:08,937 INFO L87 Difference]: Start difference. First operand 338 states and 432 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 13:40:11,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:14,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:40:14,569 INFO L93 Difference]: Finished difference Result 429 states and 546 transitions. [2022-03-19 13:40:14,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-19 13:40:14,569 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2022-03-19 13:40:14,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:40:14,571 INFO L225 Difference]: With dead ends: 429 [2022-03-19 13:40:14,571 INFO L226 Difference]: Without dead ends: 376 [2022-03-19 13:40:14,572 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2022-03-19 13:40:14,572 INFO L912 BasicCegarLoop]: 278 mSDtfsCounter, 1047 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 348 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-19 13:40:14,572 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 509 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 1034 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-03-19 13:40:14,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-03-19 13:40:14,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 329. [2022-03-19 13:40:14,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 262 states have (on average 1.3244274809160306) internal successors, (347), 266 states have internal predecessors, (347), 36 states have call successors, (36), 29 states have call predecessors, (36), 30 states have return successors, (35), 33 states have call predecessors, (35), 31 states have call successors, (35) [2022-03-19 13:40:14,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 418 transitions. [2022-03-19 13:40:14,657 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 418 transitions. Word has length 79 [2022-03-19 13:40:14,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:40:14,657 INFO L478 AbstractCegarLoop]: Abstraction has 329 states and 418 transitions. [2022-03-19 13:40:14,658 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 13:40:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 418 transitions. [2022-03-19 13:40:14,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-19 13:40:14,659 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:40:14,659 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:40:14,659 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-19 13:40:14,659 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:40:14,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:40:14,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1773831806, now seen corresponding path program 1 times [2022-03-19 13:40:14,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:14,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2001071989] [2022-03-19 13:40:14,660 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:40:14,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1773831806, now seen corresponding path program 2 times [2022-03-19 13:40:14,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:40:14,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059257981] [2022-03-19 13:40:14,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:40:14,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:40:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:14,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:40:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:14,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:40:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:14,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:40:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:14,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:14,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:40:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:14,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:14,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:40:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:14,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-19 13:40:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:14,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-19 13:40:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:14,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:14,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-19 13:40:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:14,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:40:14,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:40:14,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059257981] [2022-03-19 13:40:14,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059257981] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:14,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:14,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:40:15,000 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:40:15,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2001071989] [2022-03-19 13:40:15,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2001071989] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:15,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:15,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:40:15,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478765890] [2022-03-19 13:40:15,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:40:15,000 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 13:40:15,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:15,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 13:40:15,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-19 13:40:15,001 INFO L87 Difference]: Start difference. First operand 329 states and 418 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-03-19 13:40:17,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:21,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:40:21,522 INFO L93 Difference]: Finished difference Result 416 states and 527 transitions. [2022-03-19 13:40:21,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 13:40:21,523 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 84 [2022-03-19 13:40:21,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:40:21,524 INFO L225 Difference]: With dead ends: 416 [2022-03-19 13:40:21,524 INFO L226 Difference]: Without dead ends: 357 [2022-03-19 13:40:21,525 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-03-19 13:40:21,525 INFO L912 BasicCegarLoop]: 266 mSDtfsCounter, 556 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 194 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-03-19 13:40:21,525 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 566 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 895 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-03-19 13:40:21,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-03-19 13:40:21,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 327. [2022-03-19 13:40:21,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 261 states have (on average 1.314176245210728) internal successors, (343), 264 states have internal predecessors, (343), 35 states have call successors, (35), 29 states have call predecessors, (35), 30 states have return successors, (35), 33 states have call predecessors, (35), 31 states have call successors, (35) [2022-03-19 13:40:21,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 413 transitions. [2022-03-19 13:40:21,600 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 413 transitions. Word has length 84 [2022-03-19 13:40:21,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:40:21,600 INFO L478 AbstractCegarLoop]: Abstraction has 327 states and 413 transitions. [2022-03-19 13:40:21,601 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-03-19 13:40:21,601 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 413 transitions. [2022-03-19 13:40:21,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-19 13:40:21,602 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:40:21,602 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:40:21,602 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-19 13:40:21,602 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:40:21,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:40:21,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1690581556, now seen corresponding path program 1 times [2022-03-19 13:40:21,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:21,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1421623] [2022-03-19 13:40:21,603 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:40:21,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1690581556, now seen corresponding path program 2 times [2022-03-19 13:40:21,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:40:21,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646130039] [2022-03-19 13:40:21,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:40:21,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:40:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:21,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:40:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:21,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:40:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:21,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:40:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:21,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:21,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:40:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:21,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:21,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:40:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:21,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-19 13:40:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:22,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 13:40:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:40:22,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:40:22,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646130039] [2022-03-19 13:40:22,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646130039] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:22,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:22,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 13:40:22,031 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:40:22,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1421623] [2022-03-19 13:40:22,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1421623] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:22,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:22,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 13:40:22,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992175280] [2022-03-19 13:40:22,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:40:22,032 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 13:40:22,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:22,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 13:40:22,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-19 13:40:22,033 INFO L87 Difference]: Start difference. First operand 327 states and 413 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 13:40:24,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:26,426 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:27,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:40:27,450 INFO L93 Difference]: Finished difference Result 371 states and 465 transitions. [2022-03-19 13:40:27,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 13:40:27,451 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 80 [2022-03-19 13:40:27,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:40:27,452 INFO L225 Difference]: With dead ends: 371 [2022-03-19 13:40:27,452 INFO L226 Difference]: Without dead ends: 346 [2022-03-19 13:40:27,452 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-03-19 13:40:27,453 INFO L912 BasicCegarLoop]: 259 mSDtfsCounter, 855 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 265 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-03-19 13:40:27,453 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 559 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 915 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-03-19 13:40:27,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-03-19 13:40:27,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 326. [2022-03-19 13:40:27,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 260 states have (on average 1.3115384615384615) internal successors, (341), 263 states have internal predecessors, (341), 35 states have call successors, (35), 29 states have call predecessors, (35), 30 states have return successors, (35), 33 states have call predecessors, (35), 31 states have call successors, (35) [2022-03-19 13:40:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 411 transitions. [2022-03-19 13:40:27,548 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 411 transitions. Word has length 80 [2022-03-19 13:40:27,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:40:27,549 INFO L478 AbstractCegarLoop]: Abstraction has 326 states and 411 transitions. [2022-03-19 13:40:27,549 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 13:40:27,549 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 411 transitions. [2022-03-19 13:40:27,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-19 13:40:27,550 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:40:27,550 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:40:27,550 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-19 13:40:27,550 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:40:27,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:40:27,551 INFO L85 PathProgramCache]: Analyzing trace with hash 664933900, now seen corresponding path program 1 times [2022-03-19 13:40:27,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:27,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [238478749] [2022-03-19 13:40:27,551 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:40:27,551 INFO L85 PathProgramCache]: Analyzing trace with hash 664933900, now seen corresponding path program 2 times [2022-03-19 13:40:27,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:40:27,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762727769] [2022-03-19 13:40:27,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:40:27,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:40:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:27,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:40:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:27,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:40:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:27,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:40:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:27,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:27,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:40:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:27,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:27,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:40:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:27,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-19 13:40:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:27,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 13:40:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:40:27,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:40:27,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762727769] [2022-03-19 13:40:27,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762727769] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:27,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:27,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 13:40:27,964 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:40:27,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [238478749] [2022-03-19 13:40:27,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [238478749] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:27,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:27,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 13:40:27,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694725654] [2022-03-19 13:40:27,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:40:27,964 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 13:40:27,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:27,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 13:40:27,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-19 13:40:27,965 INFO L87 Difference]: Start difference. First operand 326 states and 411 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 8 states have internal predecessors, (60), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-19 13:40:30,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:34,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:40:34,838 INFO L93 Difference]: Finished difference Result 353 states and 444 transitions. [2022-03-19 13:40:34,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 13:40:34,838 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 8 states have internal predecessors, (60), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 80 [2022-03-19 13:40:34,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:40:34,839 INFO L225 Difference]: With dead ends: 353 [2022-03-19 13:40:34,840 INFO L226 Difference]: Without dead ends: 205 [2022-03-19 13:40:34,840 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2022-03-19 13:40:34,841 INFO L912 BasicCegarLoop]: 232 mSDtfsCounter, 1063 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 345 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-03-19 13:40:34,841 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1069 Valid, 521 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 1449 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-03-19 13:40:34,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-03-19 13:40:34,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 186. [2022-03-19 13:40:34,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 141 states have (on average 1.2411347517730495) internal successors, (175), 144 states have internal predecessors, (175), 23 states have call successors, (23), 21 states have call predecessors, (23), 21 states have return successors, (22), 20 states have call predecessors, (22), 19 states have call successors, (22) [2022-03-19 13:40:34,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 220 transitions. [2022-03-19 13:40:34,907 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 220 transitions. Word has length 80 [2022-03-19 13:40:34,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:40:34,907 INFO L478 AbstractCegarLoop]: Abstraction has 186 states and 220 transitions. [2022-03-19 13:40:34,907 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 8 states have internal predecessors, (60), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-19 13:40:34,907 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 220 transitions. [2022-03-19 13:40:34,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-19 13:40:34,908 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:40:34,908 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:40:34,908 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-19 13:40:34,908 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:40:34,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:40:34,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1299022194, now seen corresponding path program 1 times [2022-03-19 13:40:34,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:34,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1301809734] [2022-03-19 13:40:34,909 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:40:34,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1299022194, now seen corresponding path program 2 times [2022-03-19 13:40:34,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:40:34,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769006411] [2022-03-19 13:40:34,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:40:34,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:40:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:35,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:40:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:35,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:40:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:35,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:40:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:35,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:35,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:40:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:35,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:35,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:40:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:35,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-19 13:40:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:35,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 13:40:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:35,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:40:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:35,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:40:35,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:40:35,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769006411] [2022-03-19 13:40:35,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769006411] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:35,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:35,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 13:40:35,323 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:40:35,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1301809734] [2022-03-19 13:40:35,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1301809734] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:35,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:35,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 13:40:35,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979032003] [2022-03-19 13:40:35,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:40:35,325 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 13:40:35,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:35,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 13:40:35,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-19 13:40:35,326 INFO L87 Difference]: Start difference. First operand 186 states and 220 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-03-19 13:40:37,392 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:40,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:40:40,329 INFO L93 Difference]: Finished difference Result 300 states and 368 transitions. [2022-03-19 13:40:40,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 13:40:40,329 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 88 [2022-03-19 13:40:40,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:40:40,330 INFO L225 Difference]: With dead ends: 300 [2022-03-19 13:40:40,330 INFO L226 Difference]: Without dead ends: 237 [2022-03-19 13:40:40,331 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-03-19 13:40:40,331 INFO L912 BasicCegarLoop]: 132 mSDtfsCounter, 309 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 160 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-03-19 13:40:40,332 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 392 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 831 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-03-19 13:40:40,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-03-19 13:40:40,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 199. [2022-03-19 13:40:40,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 152 states have (on average 1.2236842105263157) internal successors, (186), 155 states have internal predecessors, (186), 23 states have call successors, (23), 21 states have call predecessors, (23), 23 states have return successors, (24), 22 states have call predecessors, (24), 19 states have call successors, (24) [2022-03-19 13:40:40,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 233 transitions. [2022-03-19 13:40:40,398 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 233 transitions. Word has length 88 [2022-03-19 13:40:40,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:40:40,399 INFO L478 AbstractCegarLoop]: Abstraction has 199 states and 233 transitions. [2022-03-19 13:40:40,399 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-03-19 13:40:40,399 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 233 transitions. [2022-03-19 13:40:40,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-19 13:40:40,400 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:40:40,400 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:40:40,400 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-19 13:40:40,400 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:40:40,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:40:40,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1324935307, now seen corresponding path program 1 times [2022-03-19 13:40:40,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:40,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1681880771] [2022-03-19 13:40:40,401 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:40:40,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1324935307, now seen corresponding path program 2 times [2022-03-19 13:40:40,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:40:40,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209041441] [2022-03-19 13:40:40,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:40:40,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:40:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:40,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:40:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:40,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:40:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:40,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:40:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:40,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:40,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:40:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:40,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:40,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:40:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:40,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-19 13:40:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:40,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 13:40:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:40,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:40:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:40,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:40,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:40:40,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:40:40,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209041441] [2022-03-19 13:40:40,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209041441] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:40,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:40,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:40:40,748 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:40:40,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1681880771] [2022-03-19 13:40:40,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1681880771] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:40,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:40,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:40:40,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006224084] [2022-03-19 13:40:40,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:40:40,749 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 13:40:40,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:40,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 13:40:40,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-19 13:40:40,750 INFO L87 Difference]: Start difference. First operand 199 states and 233 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-19 13:40:42,814 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 [] [2022-03-19 13:40:44,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:40:44,691 INFO L93 Difference]: Finished difference Result 437 states and 522 transitions. [2022-03-19 13:40:44,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 13:40:44,691 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2022-03-19 13:40:44,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:40:44,693 INFO L225 Difference]: With dead ends: 437 [2022-03-19 13:40:44,693 INFO L226 Difference]: Without dead ends: 408 [2022-03-19 13:40:44,694 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2022-03-19 13:40:44,694 INFO L912 BasicCegarLoop]: 145 mSDtfsCounter, 607 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 284 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:40:44,694 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 269 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 401 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-03-19 13:40:44,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-03-19 13:40:44,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 345. [2022-03-19 13:40:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 268 states have (on average 1.2350746268656716) internal successors, (331), 272 states have internal predecessors, (331), 36 states have call successors, (36), 34 states have call predecessors, (36), 40 states have return successors, (42), 38 states have call predecessors, (42), 32 states have call successors, (42) [2022-03-19 13:40:44,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 409 transitions. [2022-03-19 13:40:44,801 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 409 transitions. Word has length 89 [2022-03-19 13:40:44,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:40:44,801 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 409 transitions. [2022-03-19 13:40:44,802 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-19 13:40:44,802 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 409 transitions. [2022-03-19 13:40:44,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-19 13:40:44,802 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:40:44,803 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:40:44,803 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-19 13:40:44,803 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:40:44,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:40:44,803 INFO L85 PathProgramCache]: Analyzing trace with hash 450072055, now seen corresponding path program 1 times [2022-03-19 13:40:44,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:44,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [874792995] [2022-03-19 13:40:44,804 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:40:44,804 INFO L85 PathProgramCache]: Analyzing trace with hash 450072055, now seen corresponding path program 2 times [2022-03-19 13:40:44,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:40:44,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516880041] [2022-03-19 13:40:44,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:40:44,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:40:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:44,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:40:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:45,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:40:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:45,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:40:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:45,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:40:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:45,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:45,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 13:40:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:45,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-19 13:40:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:45,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 13:40:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:45,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:40:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:45,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:40:45,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:40:45,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516880041] [2022-03-19 13:40:45,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516880041] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:45,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:45,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 13:40:45,169 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:40:45,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [874792995] [2022-03-19 13:40:45,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [874792995] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:45,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:45,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 13:40:45,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125480146] [2022-03-19 13:40:45,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:40:45,170 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 13:40:45,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:45,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 13:40:45,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-19 13:40:45,171 INFO L87 Difference]: Start difference. First operand 345 states and 409 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-19 13:40:47,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:51,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:40:51,019 INFO L93 Difference]: Finished difference Result 657 states and 796 transitions. [2022-03-19 13:40:51,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 13:40:51,020 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 89 [2022-03-19 13:40:51,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:40:51,021 INFO L225 Difference]: With dead ends: 657 [2022-03-19 13:40:51,021 INFO L226 Difference]: Without dead ends: 399 [2022-03-19 13:40:51,022 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-03-19 13:40:51,022 INFO L912 BasicCegarLoop]: 140 mSDtfsCounter, 221 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 111 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:40:51,022 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 363 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 795 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-03-19 13:40:51,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-03-19 13:40:51,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 337. [2022-03-19 13:40:51,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 262 states have (on average 1.2328244274809161) internal successors, (323), 266 states have internal predecessors, (323), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-03-19 13:40:51,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 399 transitions. [2022-03-19 13:40:51,176 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 399 transitions. Word has length 89 [2022-03-19 13:40:51,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:40:51,176 INFO L478 AbstractCegarLoop]: Abstraction has 337 states and 399 transitions. [2022-03-19 13:40:51,177 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-19 13:40:51,177 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 399 transitions. [2022-03-19 13:40:51,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-19 13:40:51,178 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:40:51,178 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:40:51,178 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-19 13:40:51,178 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:40:51,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:40:51,178 INFO L85 PathProgramCache]: Analyzing trace with hash -623916271, now seen corresponding path program 1 times [2022-03-19 13:40:51,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:51,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1998519561] [2022-03-19 13:40:51,179 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:40:51,179 INFO L85 PathProgramCache]: Analyzing trace with hash -623916271, now seen corresponding path program 2 times [2022-03-19 13:40:51,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:40:51,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155548383] [2022-03-19 13:40:51,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:40:51,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:40:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:51,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:40:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:51,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:40:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:51,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:40:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:51,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:51,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:40:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:51,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:51,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 13:40:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:51,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 13:40:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:51,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-19 13:40:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:51,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-19 13:40:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:51,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-19 13:40:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:51,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:40:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:51,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:40:51,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:40:51,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155548383] [2022-03-19 13:40:51,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155548383] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:51,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:51,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:40:51,967 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:40:51,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1998519561] [2022-03-19 13:40:51,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1998519561] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:40:51,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:40:51,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:40:51,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328455167] [2022-03-19 13:40:51,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:40:51,968 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 13:40:51,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:51,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 13:40:51,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-19 13:40:51,970 INFO L87 Difference]: Start difference. First operand 337 states and 399 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-03-19 13:40:54,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:55,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:40:57,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:40:57,941 INFO L93 Difference]: Finished difference Result 675 states and 810 transitions. [2022-03-19 13:40:57,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 13:40:57,942 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2022-03-19 13:40:57,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:40:57,943 INFO L225 Difference]: With dead ends: 675 [2022-03-19 13:40:57,943 INFO L226 Difference]: Without dead ends: 389 [2022-03-19 13:40:57,946 INFO L911 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 [2022-03-19 13:40:57,946 INFO L912 BasicCegarLoop]: 139 mSDtfsCounter, 202 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 108 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:40:57,947 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 372 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 554 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-03-19 13:40:57,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-03-19 13:40:58,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 339. [2022-03-19 13:40:58,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 264 states have (on average 1.231060606060606) internal successors, (325), 268 states have internal predecessors, (325), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-03-19 13:40:58,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 401 transitions. [2022-03-19 13:40:58,081 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 401 transitions. Word has length 102 [2022-03-19 13:40:58,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:40:58,081 INFO L478 AbstractCegarLoop]: Abstraction has 339 states and 401 transitions. [2022-03-19 13:40:58,081 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-03-19 13:40:58,081 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 401 transitions. [2022-03-19 13:40:58,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-19 13:40:58,082 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:40:58,082 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:40:58,082 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-19 13:40:58,082 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:40:58,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:40:58,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1023672093, now seen corresponding path program 1 times [2022-03-19 13:40:58,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:40:58,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [490282661] [2022-03-19 13:40:58,091 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:40:58,092 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:40:58,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1023672093, now seen corresponding path program 2 times [2022-03-19 13:40:58,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:40:58,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220352380] [2022-03-19 13:40:58,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:40:58,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:40:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:58,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:40:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:58,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:40:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:58,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:40:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:58,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:58,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:40:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:58,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:58,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 13:40:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:58,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 13:40:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:58,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 13:40:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:58,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 13:40:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:58,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-19 13:40:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:58,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:40:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:58,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:40:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:40:58,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:40:58,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:40:58,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220352380] [2022-03-19 13:40:58,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220352380] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 13:40:58,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598013012] [2022-03-19 13:40:58,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 13:40:58,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 13:40:58,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:40:58,941 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 13:40:58,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 13:41:00,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 13:41:00,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 13:41:00,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-19 13:41:00,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 13:41:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-19 13:41:00,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 13:41:00,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598013012] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:00,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 13:41:00,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-03-19 13:41:00,443 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:41:00,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [490282661] [2022-03-19 13:41:00,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [490282661] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:00,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:00,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:41:00,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306903373] [2022-03-19 13:41:00,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:41:00,444 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:41:00,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:00,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:41:00,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-19 13:41:00,445 INFO L87 Difference]: Start difference. First operand 339 states and 401 transitions. Second operand has 4 states, 4 states have (on average 18.25) 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), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-03-19 13:41:00,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:41:00,641 INFO L93 Difference]: Finished difference Result 573 states and 692 transitions. [2022-03-19 13:41:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:41:00,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) 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), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2022-03-19 13:41:00,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:41:00,644 INFO L225 Difference]: With dead ends: 573 [2022-03-19 13:41:00,644 INFO L226 Difference]: Without dead ends: 341 [2022-03-19 13:41:00,645 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-03-19 13:41:00,646 INFO L912 BasicCegarLoop]: 162 mSDtfsCounter, 3 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 13:41:00,646 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 484 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 13:41:00,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-03-19 13:41:00,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2022-03-19 13:41:00,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 266 states have (on average 1.2293233082706767) internal successors, (327), 270 states have internal predecessors, (327), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-03-19 13:41:00,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 403 transitions. [2022-03-19 13:41:00,819 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 403 transitions. Word has length 103 [2022-03-19 13:41:00,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:41:00,820 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 403 transitions. [2022-03-19 13:41:00,820 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) 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), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-03-19 13:41:00,820 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 403 transitions. [2022-03-19 13:41:00,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-19 13:41:00,821 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:41:00,821 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:41:00,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-19 13:41:01,047 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-19 13:41:01,048 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:41:01,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:41:01,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1130425434, now seen corresponding path program 1 times [2022-03-19 13:41:01,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:01,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1985266184] [2022-03-19 13:41:01,049 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:41:01,050 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:41:01,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1130425434, now seen corresponding path program 2 times [2022-03-19 13:41:01,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:41:01,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069781787] [2022-03-19 13:41:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:41:01,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:41:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:01,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:41:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:01,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:41:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:01,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:41:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:01,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:01,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:41:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:01,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:01,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 13:41:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:01,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 13:41:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:01,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 13:41:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:01,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 13:41:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:02,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-19 13:41:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:02,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:41:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:02,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:02,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-19 13:41:02,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:41:02,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069781787] [2022-03-19 13:41:02,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069781787] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 13:41:02,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001758696] [2022-03-19 13:41:02,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 13:41:02,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 13:41:02,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:41:02,049 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 13:41:02,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-19 13:41:03,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 13:41:03,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 13:41:03,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-19 13:41:03,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 13:41:03,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-19 13:41:03,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 13:41:03,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001758696] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:03,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 13:41:03,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-03-19 13:41:03,644 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:41:03,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1985266184] [2022-03-19 13:41:03,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1985266184] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:03,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:03,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 13:41:03,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243723640] [2022-03-19 13:41:03,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:41:03,646 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 13:41:03,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:03,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 13:41:03,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-19 13:41:03,647 INFO L87 Difference]: Start difference. First operand 341 states and 403 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-03-19 13:41:03,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:41:03,805 INFO L93 Difference]: Finished difference Result 567 states and 682 transitions. [2022-03-19 13:41:03,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 13:41:03,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 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 104 [2022-03-19 13:41:03,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:41:03,807 INFO L225 Difference]: With dead ends: 567 [2022-03-19 13:41:03,807 INFO L226 Difference]: Without dead ends: 343 [2022-03-19 13:41:03,808 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-03-19 13:41:03,809 INFO L912 BasicCegarLoop]: 163 mSDtfsCounter, 2 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 13:41:03,809 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 485 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 13:41:03,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-03-19 13:41:03,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2022-03-19 13:41:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 268 states have (on average 1.2276119402985075) internal successors, (329), 272 states have internal predecessors, (329), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-03-19 13:41:03,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 405 transitions. [2022-03-19 13:41:03,957 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 405 transitions. Word has length 104 [2022-03-19 13:41:03,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:41:03,957 INFO L478 AbstractCegarLoop]: Abstraction has 343 states and 405 transitions. [2022-03-19 13:41:03,957 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-03-19 13:41:03,957 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 405 transitions. [2022-03-19 13:41:03,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-03-19 13:41:03,958 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:41:03,958 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:41:03,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-19 13:41:04,172 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,SelfDestructingSolverStorable27 [2022-03-19 13:41:04,172 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:41:04,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:41:04,173 INFO L85 PathProgramCache]: Analyzing trace with hash 535693243, now seen corresponding path program 1 times [2022-03-19 13:41:04,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:04,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [869079661] [2022-03-19 13:41:04,174 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:41:04,174 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:41:04,174 INFO L85 PathProgramCache]: Analyzing trace with hash 535693243, now seen corresponding path program 2 times [2022-03-19 13:41:04,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:41:04,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675433066] [2022-03-19 13:41:04,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:41:04,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:41:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:04,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:41:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:04,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:41:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:04,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:41:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:04,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:04,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:41:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:04,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:04,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 13:41:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:04,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 13:41:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:04,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 13:41:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:04,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 13:41:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:04,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-19 13:41:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:05,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:41:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:05,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:05,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-19 13:41:05,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:41:05,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675433066] [2022-03-19 13:41:05,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675433066] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 13:41:05,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61479635] [2022-03-19 13:41:05,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 13:41:05,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 13:41:05,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:41:05,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 13:41:05,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-19 13:41:07,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 13:41:07,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 13:41:07,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-19 13:41:07,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 13:41:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:41:07,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 13:41:07,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61479635] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:07,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 13:41:07,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-03-19 13:41:07,621 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:41:07,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [869079661] [2022-03-19 13:41:07,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [869079661] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:07,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:07,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:41:07,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978649335] [2022-03-19 13:41:07,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:41:07,622 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:41:07,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:07,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:41:07,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-19 13:41:07,623 INFO L87 Difference]: Start difference. First operand 343 states and 405 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2022-03-19 13:41:07,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:41:07,786 INFO L93 Difference]: Finished difference Result 439 states and 524 transitions. [2022-03-19 13:41:07,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:41:07,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 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 105 [2022-03-19 13:41:07,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:41:07,788 INFO L225 Difference]: With dead ends: 439 [2022-03-19 13:41:07,788 INFO L226 Difference]: Without dead ends: 329 [2022-03-19 13:41:07,789 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-19 13:41:07,789 INFO L912 BasicCegarLoop]: 162 mSDtfsCounter, 15 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 13:41:07,789 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 629 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 13:41:07,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-03-19 13:41:07,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2022-03-19 13:41:07,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 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), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-03-19 13:41:07,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 385 transitions. [2022-03-19 13:41:07,908 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 385 transitions. Word has length 105 [2022-03-19 13:41:07,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:41:07,909 INFO L478 AbstractCegarLoop]: Abstraction has 329 states and 385 transitions. [2022-03-19 13:41:07,909 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2022-03-19 13:41:07,909 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 385 transitions. [2022-03-19 13:41:07,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-19 13:41:07,910 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:41:07,910 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:41:07,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-19 13:41:08,135 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-19 13:41:08,136 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:41:08,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:41:08,136 INFO L85 PathProgramCache]: Analyzing trace with hash 131837236, now seen corresponding path program 1 times [2022-03-19 13:41:08,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:08,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1678420649] [2022-03-19 13:41:08,137 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:41:08,137 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:41:08,137 INFO L85 PathProgramCache]: Analyzing trace with hash 131837236, now seen corresponding path program 2 times [2022-03-19 13:41:08,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:41:08,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335276392] [2022-03-19 13:41:08,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:41:08,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:41:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:08,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:41:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:08,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:41:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:08,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:41:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:08,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:08,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:41:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:08,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:08,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 13:41:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:08,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 13:41:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:08,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 13:41:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:08,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 13:41:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:08,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-19 13:41:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:08,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:41:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:08,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:08,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 13:41:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:08,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:41:08,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:41:08,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335276392] [2022-03-19 13:41:08,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335276392] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:08,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:08,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 13:41:08,649 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:41:08,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1678420649] [2022-03-19 13:41:08,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1678420649] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:08,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:08,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 13:41:08,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289239890] [2022-03-19 13:41:08,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:41:08,650 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 13:41:08,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:08,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 13:41:08,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-03-19 13:41:08,650 INFO L87 Difference]: Start difference. First operand 329 states and 385 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-19 13:41:10,831 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:12,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:41:12,572 INFO L93 Difference]: Finished difference Result 453 states and 540 transitions. [2022-03-19 13:41:12,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 13:41:12,573 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 6 states have internal predecessors, (77), 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 109 [2022-03-19 13:41:12,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:41:12,575 INFO L225 Difference]: With dead ends: 453 [2022-03-19 13:41:12,575 INFO L226 Difference]: Without dead ends: 357 [2022-03-19 13:41:12,576 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2022-03-19 13:41:12,577 INFO L912 BasicCegarLoop]: 132 mSDtfsCounter, 326 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 145 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:41:12,577 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 324 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 586 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-03-19 13:41:12,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-03-19 13:41:12,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 317. [2022-03-19 13:41:12,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 244 states have (on average 1.209016393442623) internal successors, (295), 248 states have internal predecessors, (295), 36 states have call successors, (36), 34 states have call predecessors, (36), 36 states have return successors, (38), 34 states have call predecessors, (38), 32 states have call successors, (38) [2022-03-19 13:41:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 369 transitions. [2022-03-19 13:41:12,707 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 369 transitions. Word has length 109 [2022-03-19 13:41:12,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:41:12,708 INFO L478 AbstractCegarLoop]: Abstraction has 317 states and 369 transitions. [2022-03-19 13:41:12,708 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-19 13:41:12,708 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 369 transitions. [2022-03-19 13:41:12,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-03-19 13:41:12,709 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:41:12,709 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:41:12,709 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-19 13:41:12,709 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:41:12,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:41:12,709 INFO L85 PathProgramCache]: Analyzing trace with hash 189907132, now seen corresponding path program 1 times [2022-03-19 13:41:12,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:12,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [599114665] [2022-03-19 13:41:12,710 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:41:12,710 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:41:12,710 INFO L85 PathProgramCache]: Analyzing trace with hash 189907132, now seen corresponding path program 2 times [2022-03-19 13:41:12,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:41:12,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189652313] [2022-03-19 13:41:12,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:41:12,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:41:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:12,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:41:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:12,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:41:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:12,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:41:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:12,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:13,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:41:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:13,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:13,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 13:41:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:13,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 13:41:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:13,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 13:41:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:13,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 13:41:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:13,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-19 13:41:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:13,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:41:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:13,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:13,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 13:41:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:41:13,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:41:13,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189652313] [2022-03-19 13:41:13,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189652313] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:13,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:13,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:41:13,145 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:41:13,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [599114665] [2022-03-19 13:41:13,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [599114665] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:13,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:13,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:41:13,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941375555] [2022-03-19 13:41:13,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:41:13,146 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 13:41:13,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:13,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 13:41:13,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-03-19 13:41:13,147 INFO L87 Difference]: Start difference. First operand 317 states and 369 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 10 states have call predecessors, (18), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 13:41:15,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:17,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:41:17,534 INFO L93 Difference]: Finished difference Result 389 states and 464 transitions. [2022-03-19 13:41:17,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 13:41:17,534 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 3 states have internal predecessors, (79), 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 111 [2022-03-19 13:41:17,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:41:17,536 INFO L225 Difference]: With dead ends: 389 [2022-03-19 13:41:17,536 INFO L226 Difference]: Without dead ends: 386 [2022-03-19 13:41:17,536 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-03-19 13:41:17,537 INFO L912 BasicCegarLoop]: 150 mSDtfsCounter, 219 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 114 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-03-19 13:41:17,537 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 382 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 474 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-03-19 13:41:17,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-03-19 13:41:17,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 325. [2022-03-19 13:41:17,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 252 states have (on average 1.2182539682539681) internal successors, (307), 256 states have internal predecessors, (307), 36 states have call successors, (36), 34 states have call predecessors, (36), 36 states have return successors, (38), 34 states have call predecessors, (38), 32 states have call successors, (38) [2022-03-19 13:41:17,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 381 transitions. [2022-03-19 13:41:17,645 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 381 transitions. Word has length 111 [2022-03-19 13:41:17,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:41:17,645 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 381 transitions. [2022-03-19 13:41:17,645 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 10 states have call predecessors, (18), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 13:41:17,645 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 381 transitions. [2022-03-19 13:41:17,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-03-19 13:41:17,646 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:41:17,646 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:41:17,646 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-19 13:41:17,646 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:41:17,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:41:17,647 INFO L85 PathProgramCache]: Analyzing trace with hash -998022627, now seen corresponding path program 1 times [2022-03-19 13:41:17,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:17,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1856130663] [2022-03-19 13:41:17,648 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:41:17,648 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:41:17,648 INFO L85 PathProgramCache]: Analyzing trace with hash -998022627, now seen corresponding path program 2 times [2022-03-19 13:41:17,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:41:17,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64361734] [2022-03-19 13:41:17,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:41:17,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:41:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:17,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:41:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:17,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:41:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:17,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:41:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:17,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:17,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:41:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:17,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:17,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 13:41:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:17,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 13:41:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:18,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 13:41:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:18,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 13:41:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:18,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-19 13:41:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:18,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:41:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:18,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:18,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 13:41:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:18,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:41:18,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:41:18,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64361734] [2022-03-19 13:41:18,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64361734] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:18,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:18,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:41:18,107 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:41:18,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1856130663] [2022-03-19 13:41:18,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1856130663] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:18,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:18,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:41:18,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957870370] [2022-03-19 13:41:18,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:41:18,109 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 13:41:18,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:18,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 13:41:18,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-03-19 13:41:18,110 INFO L87 Difference]: Start difference. First operand 325 states and 381 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 13:41:20,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:21,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:41:21,284 INFO L93 Difference]: Finished difference Result 465 states and 556 transitions. [2022-03-19 13:41:21,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 13:41:21,284 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 3 states have internal predecessors, (79), 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 111 [2022-03-19 13:41:21,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:41:21,285 INFO L225 Difference]: With dead ends: 465 [2022-03-19 13:41:21,286 INFO L226 Difference]: Without dead ends: 377 [2022-03-19 13:41:21,286 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-03-19 13:41:21,287 INFO L912 BasicCegarLoop]: 144 mSDtfsCounter, 258 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 130 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-19 13:41:21,287 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 315 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 474 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-03-19 13:41:21,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-03-19 13:41:21,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 331. [2022-03-19 13:41:21,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 258 states have (on average 1.2131782945736433) internal successors, (313), 262 states have internal predecessors, (313), 36 states have call successors, (36), 34 states have call predecessors, (36), 36 states have return successors, (38), 34 states have call predecessors, (38), 32 states have call successors, (38) [2022-03-19 13:41:21,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 387 transitions. [2022-03-19 13:41:21,421 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 387 transitions. Word has length 111 [2022-03-19 13:41:21,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:41:21,421 INFO L478 AbstractCegarLoop]: Abstraction has 331 states and 387 transitions. [2022-03-19 13:41:21,421 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 13:41:21,421 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 387 transitions. [2022-03-19 13:41:21,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-03-19 13:41:21,422 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:41:21,422 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:41:21,422 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-19 13:41:21,422 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:41:21,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:41:21,422 INFO L85 PathProgramCache]: Analyzing trace with hash 687528413, now seen corresponding path program 1 times [2022-03-19 13:41:21,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:21,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [796912580] [2022-03-19 13:41:21,423 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:41:21,423 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:41:21,424 INFO L85 PathProgramCache]: Analyzing trace with hash 687528413, now seen corresponding path program 2 times [2022-03-19 13:41:21,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:41:21,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306074136] [2022-03-19 13:41:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:41:21,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:41:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:41:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:41:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:41:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:41:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 13:41:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 13:41:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 13:41:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 13:41:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-19 13:41:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:41:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 13:41:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:41:21,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:41:21,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306074136] [2022-03-19 13:41:21,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306074136] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:21,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:21,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 13:41:21,865 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:41:21,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [796912580] [2022-03-19 13:41:21,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [796912580] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:21,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:21,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 13:41:21,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807414805] [2022-03-19 13:41:21,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:41:21,865 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 13:41:21,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:21,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 13:41:21,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-19 13:41:21,866 INFO L87 Difference]: Start difference. First operand 331 states and 387 transitions. Second operand has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 13:41:23,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:25,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:41:25,918 INFO L93 Difference]: Finished difference Result 419 states and 493 transitions. [2022-03-19 13:41:25,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 13:41:25,918 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 5 states have internal predecessors, (79), 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 111 [2022-03-19 13:41:25,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:41:25,920 INFO L225 Difference]: With dead ends: 419 [2022-03-19 13:41:25,920 INFO L226 Difference]: Without dead ends: 390 [2022-03-19 13:41:25,920 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-03-19 13:41:25,920 INFO L912 BasicCegarLoop]: 149 mSDtfsCounter, 313 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 163 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-03-19 13:41:25,921 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 450 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 776 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-03-19 13:41:25,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-03-19 13:41:26,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 341. [2022-03-19 13:41:26,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 266 states have (on average 1.2067669172932332) internal successors, (321), 270 states have internal predecessors, (321), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-03-19 13:41:26,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 397 transitions. [2022-03-19 13:41:26,067 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 397 transitions. Word has length 111 [2022-03-19 13:41:26,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:41:26,067 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 397 transitions. [2022-03-19 13:41:26,067 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 13:41:26,067 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 397 transitions. [2022-03-19 13:41:26,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-03-19 13:41:26,068 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:41:26,068 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:41:26,068 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-19 13:41:26,069 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:41:26,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:41:26,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1354550086, now seen corresponding path program 1 times [2022-03-19 13:41:26,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:26,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1839030398] [2022-03-19 13:41:26,070 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:41:26,070 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:41:26,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1354550086, now seen corresponding path program 2 times [2022-03-19 13:41:26,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:41:26,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346370020] [2022-03-19 13:41:26,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:41:26,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:41:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:26,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:41:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:26,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:41:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:26,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:41:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:26,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:26,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:41:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:26,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:26,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 13:41:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:26,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 13:41:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:26,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 13:41:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:26,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 13:41:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:26,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-19 13:41:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:41:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:26,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:26,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 13:41:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:41:26,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:41:26,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346370020] [2022-03-19 13:41:26,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346370020] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:26,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:26,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 13:41:26,543 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:41:26,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1839030398] [2022-03-19 13:41:26,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1839030398] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:26,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:26,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 13:41:26,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197940384] [2022-03-19 13:41:26,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:41:26,544 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 13:41:26,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:26,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 13:41:26,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-03-19 13:41:26,545 INFO L87 Difference]: Start difference. First operand 341 states and 397 transitions. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (18), 12 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-19 13:41:28,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:30,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:41:30,524 INFO L93 Difference]: Finished difference Result 420 states and 488 transitions. [2022-03-19 13:41:30,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-19 13:41:30,524 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 6 states have internal predecessors, (80), 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 112 [2022-03-19 13:41:30,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:41:30,526 INFO L225 Difference]: With dead ends: 420 [2022-03-19 13:41:30,526 INFO L226 Difference]: Without dead ends: 373 [2022-03-19 13:41:30,526 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=672, Unknown=0, NotChecked=0, Total=930 [2022-03-19 13:41:30,527 INFO L912 BasicCegarLoop]: 130 mSDtfsCounter, 690 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 288 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-03-19 13:41:30,527 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 291 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 413 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-03-19 13:41:30,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-03-19 13:41:30,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 335. [2022-03-19 13:41:30,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 260 states have (on average 1.1807692307692308) internal successors, (307), 264 states have internal predecessors, (307), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-03-19 13:41:30,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 383 transitions. [2022-03-19 13:41:30,674 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 383 transitions. Word has length 112 [2022-03-19 13:41:30,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:41:30,674 INFO L478 AbstractCegarLoop]: Abstraction has 335 states and 383 transitions. [2022-03-19 13:41:30,675 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (18), 12 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-19 13:41:30,675 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 383 transitions. [2022-03-19 13:41:30,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-03-19 13:41:30,675 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:41:30,676 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:41:30,676 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-19 13:41:30,676 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:41:30,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:41:30,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1326365972, now seen corresponding path program 1 times [2022-03-19 13:41:30,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:30,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [654163242] [2022-03-19 13:41:30,677 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:41:30,677 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:41:30,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1326365972, now seen corresponding path program 2 times [2022-03-19 13:41:30,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:41:30,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973642006] [2022-03-19 13:41:30,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:41:30,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:41:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:30,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:41:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:30,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:41:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:30,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:41:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:30,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:30,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:41:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:30,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:31,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 13:41:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:31,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 13:41:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:31,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 13:41:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:31,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 13:41:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:31,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-19 13:41:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:31,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:41:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:31,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:31,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 13:41:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:31,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:41:31,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:41:31,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973642006] [2022-03-19 13:41:31,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973642006] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:31,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:31,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 13:41:31,196 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:41:31,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [654163242] [2022-03-19 13:41:31,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [654163242] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:31,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:31,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 13:41:31,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446108943] [2022-03-19 13:41:31,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:41:31,197 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 13:41:31,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:31,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 13:41:31,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-19 13:41:31,200 INFO L87 Difference]: Start difference. First operand 335 states and 383 transitions. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 13:41:33,290 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 [] [2022-03-19 13:41:36,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:41:36,431 INFO L93 Difference]: Finished difference Result 433 states and 499 transitions. [2022-03-19 13:41:36,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 13:41:36,431 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 5 states have internal predecessors, (80), 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 112 [2022-03-19 13:41:36,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:41:36,433 INFO L225 Difference]: With dead ends: 433 [2022-03-19 13:41:36,433 INFO L226 Difference]: Without dead ends: 364 [2022-03-19 13:41:36,434 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-03-19 13:41:36,434 INFO L912 BasicCegarLoop]: 149 mSDtfsCounter, 251 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 137 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-19 13:41:36,434 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 516 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 866 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-03-19 13:41:36,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-03-19 13:41:36,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 325. [2022-03-19 13:41:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 252 states have (on average 1.1626984126984128) internal successors, (293), 256 states have internal predecessors, (293), 36 states have call successors, (36), 34 states have call predecessors, (36), 36 states have return successors, (38), 34 states have call predecessors, (38), 32 states have call successors, (38) [2022-03-19 13:41:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 367 transitions. [2022-03-19 13:41:36,603 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 367 transitions. Word has length 112 [2022-03-19 13:41:36,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:41:36,604 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 367 transitions. [2022-03-19 13:41:36,604 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-19 13:41:36,604 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 367 transitions. [2022-03-19 13:41:36,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-03-19 13:41:36,605 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:41:36,605 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:41:36,605 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-19 13:41:36,605 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:41:36,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:41:36,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1216825272, now seen corresponding path program 1 times [2022-03-19 13:41:36,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:36,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [218898980] [2022-03-19 13:41:36,607 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:41:36,607 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:41:36,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1216825272, now seen corresponding path program 2 times [2022-03-19 13:41:36,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:41:36,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162530649] [2022-03-19 13:41:36,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:41:36,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:41:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:36,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:41:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:36,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:41:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:36,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:41:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:36,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:36,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:41:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:36,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:36,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 13:41:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:36,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 13:41:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:36,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 13:41:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:36,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 13:41:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:36,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-19 13:41:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:37,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:41:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:37,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:37,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 13:41:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:37,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:41:37,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:41:37,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162530649] [2022-03-19 13:41:37,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162530649] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:37,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:37,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:41:37,047 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:41:37,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [218898980] [2022-03-19 13:41:37,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [218898980] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:37,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:37,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:41:37,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870722333] [2022-03-19 13:41:37,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:41:37,048 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 13:41:37,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:37,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 13:41:37,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-03-19 13:41:37,049 INFO L87 Difference]: Start difference. First operand 325 states and 367 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-19 13:41:39,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:40,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:41:40,335 INFO L93 Difference]: Finished difference Result 446 states and 505 transitions. [2022-03-19 13:41:40,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 13:41:40,336 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 3 states have internal predecessors, (80), 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 112 [2022-03-19 13:41:40,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:41:40,337 INFO L225 Difference]: With dead ends: 446 [2022-03-19 13:41:40,337 INFO L226 Difference]: Without dead ends: 380 [2022-03-19 13:41:40,337 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-03-19 13:41:40,338 INFO L912 BasicCegarLoop]: 137 mSDtfsCounter, 300 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 143 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-19 13:41:40,338 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 298 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 323 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-03-19 13:41:40,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-03-19 13:41:40,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 342. [2022-03-19 13:41:40,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 266 states have (on average 1.1428571428571428) internal successors, (304), 270 states have internal predecessors, (304), 36 states have call successors, (36), 35 states have call predecessors, (36), 39 states have return successors, (41), 36 states have call predecessors, (41), 33 states have call successors, (41) [2022-03-19 13:41:40,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 381 transitions. [2022-03-19 13:41:40,459 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 381 transitions. Word has length 112 [2022-03-19 13:41:40,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:41:40,459 INFO L478 AbstractCegarLoop]: Abstraction has 342 states and 381 transitions. [2022-03-19 13:41:40,459 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-19 13:41:40,459 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 381 transitions. [2022-03-19 13:41:40,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-19 13:41:40,460 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:41:40,460 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:41:40,460 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-19 13:41:40,460 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:41:40,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:41:40,461 INFO L85 PathProgramCache]: Analyzing trace with hash 542965401, now seen corresponding path program 1 times [2022-03-19 13:41:40,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:40,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1491331834] [2022-03-19 13:41:40,462 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:41:40,462 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:41:40,462 INFO L85 PathProgramCache]: Analyzing trace with hash 542965401, now seen corresponding path program 2 times [2022-03-19 13:41:40,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:41:40,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014752444] [2022-03-19 13:41:40,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:41:40,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:41:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:40,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:41:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:40,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:41:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:40,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:41:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:40,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:40,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:41:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:40,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:40,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 13:41:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:41,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 13:41:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:41,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 13:41:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:41,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-19 13:41:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:41,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-19 13:41:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:41:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:41,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:41,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 13:41:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:41,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-19 13:41:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:41,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-19 13:41:41,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:41:41,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014752444] [2022-03-19 13:41:41,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014752444] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 13:41:41,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45325995] [2022-03-19 13:41:41,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 13:41:41,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 13:41:41,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:41:41,131 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 13:41:41,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-19 13:41:42,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 13:41:42,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 13:41:42,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-19 13:41:42,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 13:41:42,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:41:42,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 13:41:42,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45325995] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:42,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 13:41:42,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 16 [2022-03-19 13:41:42,520 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:41:42,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1491331834] [2022-03-19 13:41:42,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1491331834] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:42,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:42,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:41:42,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471240018] [2022-03-19 13:41:42,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:41:42,521 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:41:42,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:42,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:41:42,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-03-19 13:41:42,521 INFO L87 Difference]: Start difference. First operand 342 states and 381 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-03-19 13:41:43,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:41:43,431 INFO L93 Difference]: Finished difference Result 382 states and 425 transitions. [2022-03-19 13:41:43,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 13:41:43,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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 122 [2022-03-19 13:41:43,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:41:43,433 INFO L225 Difference]: With dead ends: 382 [2022-03-19 13:41:43,433 INFO L226 Difference]: Without dead ends: 317 [2022-03-19 13:41:43,433 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-03-19 13:41:43,433 INFO L912 BasicCegarLoop]: 159 mSDtfsCounter, 71 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 13:41:43,434 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 308 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 13:41:43,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-03-19 13:41:43,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 295. [2022-03-19 13:41:43,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 227 states have (on average 1.118942731277533) internal successors, (254), 229 states have internal predecessors, (254), 33 states have call successors, (33), 33 states have call predecessors, (33), 34 states have return successors, (35), 32 states have call predecessors, (35), 31 states have call successors, (35) [2022-03-19 13:41:43,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 322 transitions. [2022-03-19 13:41:43,548 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 322 transitions. Word has length 122 [2022-03-19 13:41:43,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:41:43,548 INFO L478 AbstractCegarLoop]: Abstraction has 295 states and 322 transitions. [2022-03-19 13:41:43,548 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-03-19 13:41:43,548 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 322 transitions. [2022-03-19 13:41:43,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-03-19 13:41:43,549 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:41:43,549 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:41:43,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-19 13:41:43,755 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,SelfDestructingSolverStorable36 [2022-03-19 13:41:43,755 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:41:43,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:41:43,755 INFO L85 PathProgramCache]: Analyzing trace with hash -2117844311, now seen corresponding path program 1 times [2022-03-19 13:41:43,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:43,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2095338869] [2022-03-19 13:41:43,756 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:41:43,756 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:41:43,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2117844311, now seen corresponding path program 2 times [2022-03-19 13:41:43,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:41:43,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499572180] [2022-03-19 13:41:43,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:41:43,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:41:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:43,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:41:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:43,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:41:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:43,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:41:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:44,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:44,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:41:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:44,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:44,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 13:41:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:44,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 13:41:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:44,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 13:41:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:44,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 13:41:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:44,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:41:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:44,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 13:41:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:44,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:41:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:44,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:44,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 13:41:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:44,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-19 13:41:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:44,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:41:44,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:41:44,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499572180] [2022-03-19 13:41:44,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499572180] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:44,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:44,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-19 13:41:44,350 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:41:44,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2095338869] [2022-03-19 13:41:44,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2095338869] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:44,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:44,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-19 13:41:44,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769734092] [2022-03-19 13:41:44,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:41:44,352 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-19 13:41:44,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:44,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-19 13:41:44,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-03-19 13:41:44,353 INFO L87 Difference]: Start difference. First operand 295 states and 322 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-19 13:41:46,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:49,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:41:49,594 INFO L93 Difference]: Finished difference Result 339 states and 373 transitions. [2022-03-19 13:41:49,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 13:41:49,595 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 7 states have internal predecessors, (94), 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 128 [2022-03-19 13:41:49,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:41:49,596 INFO L225 Difference]: With dead ends: 339 [2022-03-19 13:41:49,596 INFO L226 Difference]: Without dead ends: 297 [2022-03-19 13:41:49,596 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=675, Unknown=0, NotChecked=0, Total=812 [2022-03-19 13:41:49,597 INFO L912 BasicCegarLoop]: 130 mSDtfsCounter, 221 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 118 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-03-19 13:41:49,597 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 520 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1278 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-03-19 13:41:49,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-03-19 13:41:49,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 277. [2022-03-19 13:41:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 211 states have (on average 1.1184834123222749) internal successors, (236), 213 states have internal predecessors, (236), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (33), 30 states have call predecessors, (33), 31 states have call successors, (33) [2022-03-19 13:41:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 302 transitions. [2022-03-19 13:41:49,694 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 302 transitions. Word has length 128 [2022-03-19 13:41:49,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:41:49,694 INFO L478 AbstractCegarLoop]: Abstraction has 277 states and 302 transitions. [2022-03-19 13:41:49,694 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-19 13:41:49,694 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 302 transitions. [2022-03-19 13:41:49,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-03-19 13:41:49,695 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:41:49,695 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:41:49,695 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-19 13:41:49,695 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:41:49,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:41:49,695 INFO L85 PathProgramCache]: Analyzing trace with hash -186237449, now seen corresponding path program 1 times [2022-03-19 13:41:49,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:49,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [51767972] [2022-03-19 13:41:49,696 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:41:49,696 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:41:49,696 INFO L85 PathProgramCache]: Analyzing trace with hash -186237449, now seen corresponding path program 2 times [2022-03-19 13:41:49,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:41:49,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147371687] [2022-03-19 13:41:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:41:49,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:41:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:49,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:41:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:49,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:41:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:49,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:41:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:49,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:49,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:41:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:49,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:50,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 13:41:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:50,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 13:41:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:50,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 13:41:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:50,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 13:41:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:50,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:41:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:50,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 13:41:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:50,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:41:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:50,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:50,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 13:41:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:50,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-19 13:41:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:41:50,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:41:50,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147371687] [2022-03-19 13:41:50,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147371687] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:50,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:50,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 13:41:50,178 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:41:50,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [51767972] [2022-03-19 13:41:50,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [51767972] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:50,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:50,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 13:41:50,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27626713] [2022-03-19 13:41:50,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:41:50,179 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 13:41:50,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:50,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 13:41:50,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-03-19 13:41:50,179 INFO L87 Difference]: Start difference. First operand 277 states and 302 transitions. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-19 13:41:52,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:41:55,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:41:55,886 INFO L93 Difference]: Finished difference Result 317 states and 348 transitions. [2022-03-19 13:41:55,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 13:41:55,887 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 5 states have internal predecessors, (94), 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 128 [2022-03-19 13:41:55,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:41:55,888 INFO L225 Difference]: With dead ends: 317 [2022-03-19 13:41:55,888 INFO L226 Difference]: Without dead ends: 297 [2022-03-19 13:41:55,888 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-03-19 13:41:55,889 INFO L912 BasicCegarLoop]: 133 mSDtfsCounter, 188 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 101 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:41:55,889 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 406 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 787 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-03-19 13:41:55,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-03-19 13:41:55,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 275. [2022-03-19 13:41:56,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 209 states have (on average 1.1100478468899522) internal successors, (232), 211 states have internal predecessors, (232), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (33), 30 states have call predecessors, (33), 31 states have call successors, (33) [2022-03-19 13:41:56,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 298 transitions. [2022-03-19 13:41:56,000 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 298 transitions. Word has length 128 [2022-03-19 13:41:56,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:41:56,000 INFO L478 AbstractCegarLoop]: Abstraction has 275 states and 298 transitions. [2022-03-19 13:41:56,001 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-19 13:41:56,001 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 298 transitions. [2022-03-19 13:41:56,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-03-19 13:41:56,001 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:41:56,001 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:41:56,001 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-19 13:41:56,001 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:41:56,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:41:56,002 INFO L85 PathProgramCache]: Analyzing trace with hash -792455600, now seen corresponding path program 1 times [2022-03-19 13:41:56,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:56,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2019823596] [2022-03-19 13:41:56,003 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:41:56,003 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:41:56,003 INFO L85 PathProgramCache]: Analyzing trace with hash -792455600, now seen corresponding path program 2 times [2022-03-19 13:41:56,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:41:56,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640211370] [2022-03-19 13:41:56,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:41:56,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:41:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:56,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:41:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:56,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:41:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:56,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:41:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:56,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:56,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:41:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:56,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:56,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 13:41:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:56,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 13:41:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:56,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 13:41:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:56,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 13:41:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:56,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:41:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:56,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 13:41:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:56,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:41:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:56,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:41:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:56,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 13:41:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:56,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-19 13:41:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:41:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 13:41:56,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:41:56,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640211370] [2022-03-19 13:41:56,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640211370] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:56,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:56,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-19 13:41:56,477 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:41:56,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2019823596] [2022-03-19 13:41:56,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2019823596] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:41:56,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:41:56,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-19 13:41:56,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454753931] [2022-03-19 13:41:56,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:41:56,477 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-19 13:41:56,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:41:56,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-19 13:41:56,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-03-19 13:41:56,478 INFO L87 Difference]: Start difference. First operand 275 states and 298 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 6 states have internal predecessors, (95), 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) [2022-03-19 13:41:58,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:01,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 13:42:03,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:42:03,937 INFO L93 Difference]: Finished difference Result 317 states and 344 transitions. [2022-03-19 13:42:03,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 13:42:03,938 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 6 states have internal predecessors, (95), 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 129 [2022-03-19 13:42:03,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:42:03,939 INFO L225 Difference]: With dead ends: 317 [2022-03-19 13:42:03,939 INFO L226 Difference]: Without dead ends: 247 [2022-03-19 13:42:03,939 INFO L911 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 [2022-03-19 13:42:03,939 INFO L912 BasicCegarLoop]: 125 mSDtfsCounter, 156 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 97 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-03-19 13:42:03,939 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 489 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 950 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-03-19 13:42:03,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-03-19 13:42:04,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 237. [2022-03-19 13:42:04,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 177 states have (on average 1.0847457627118644) internal successors, (192), 177 states have internal predecessors, (192), 31 states have call successors, (31), 31 states have call predecessors, (31), 28 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-03-19 13:42:04,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 252 transitions. [2022-03-19 13:42:04,033 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 252 transitions. Word has length 129 [2022-03-19 13:42:04,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:42:04,034 INFO L478 AbstractCegarLoop]: Abstraction has 237 states and 252 transitions. [2022-03-19 13:42:04,034 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 6 states have internal predecessors, (95), 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) [2022-03-19 13:42:04,034 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 252 transitions. [2022-03-19 13:42:04,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-03-19 13:42:04,034 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:42:04,034 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:42:04,035 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-19 13:42:04,035 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:42:04,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:42:04,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1381815261, now seen corresponding path program 1 times [2022-03-19 13:42:04,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:42:04,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1399490244] [2022-03-19 13:42:04,036 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-19 13:42:04,036 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 13:42:04,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1381815261, now seen corresponding path program 2 times [2022-03-19 13:42:04,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:42:04,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633725253] [2022-03-19 13:42:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:42:04,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:42:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:04,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:42:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:04,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:42:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:04,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 13:42:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:04,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:42:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:04,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 13:42:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:04,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:42:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:04,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 13:42:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:04,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 13:42:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:04,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 13:42:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:04,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 13:42:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:04,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:42:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:04,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 13:42:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:04,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:42:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:04,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:42:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:04,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 13:42:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:04,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-19 13:42:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:04,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-19 13:42:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:42:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-19 13:42:04,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:42:04,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633725253] [2022-03-19 13:42:04,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633725253] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 13:42:04,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579080042] [2022-03-19 13:42:04,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 13:42:04,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 13:42:04,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:42:04,885 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 13:42:04,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process