/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/floppy.i.cil-3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-21 00:00:43,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-21 00:00:43,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-21 00:00:43,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-21 00:00:43,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-21 00:00:43,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-21 00:00:43,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-21 00:00:43,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-21 00:00:43,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-21 00:00:43,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-21 00:00:43,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-21 00:00:43,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-21 00:00:43,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-21 00:00:43,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-21 00:00:43,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-21 00:00:43,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-21 00:00:43,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-21 00:00:43,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-21 00:00:43,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-21 00:00:43,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-21 00:00:43,968 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-21 00:00:43,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-21 00:00:43,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-21 00:00:43,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-21 00:00:43,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-21 00:00:43,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-21 00:00:43,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-21 00:00:43,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-21 00:00:43,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-21 00:00:43,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-21 00:00:43,998 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-21 00:00:43,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-21 00:00:44,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-21 00:00:44,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-21 00:00:44,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-21 00:00:44,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-21 00:00:44,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-21 00:00:44,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-21 00:00:44,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-21 00:00:44,001 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-21 00:00:44,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-21 00:00:44,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-21 00:00:44,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-21 00:00:44,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-21 00:00:44,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-21 00:00:44,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-21 00:00:44,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-21 00:00:44,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-21 00:00:44,002 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-21 00:00:44,002 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-21 00:00:44,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-21 00:00:44,003 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-21 00:00:44,003 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-21 00:00:44,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-21 00:00:44,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-21 00:00:44,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-21 00:00:44,301 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-21 00:00:44,302 INFO L275 PluginConnector]: CDTParser initialized [2022-03-21 00:00:44,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c [2022-03-21 00:00:44,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae6fd0e17/5be86dd1d5c74ed69ac7b2250de9a7e7/FLAG3fee7601c [2022-03-21 00:00:45,050 INFO L306 CDTParser]: Found 1 translation units. [2022-03-21 00:00:45,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c [2022-03-21 00:00:45,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae6fd0e17/5be86dd1d5c74ed69ac7b2250de9a7e7/FLAG3fee7601c [2022-03-21 00:00:45,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae6fd0e17/5be86dd1d5c74ed69ac7b2250de9a7e7 [2022-03-21 00:00:45,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-21 00:00:45,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-21 00:00:45,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-21 00:00:45,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-21 00:00:45,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-21 00:00:45,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.03 12:00:45" (1/1) ... [2022-03-21 00:00:45,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b54707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:00:45, skipping insertion in model container [2022-03-21 00:00:45,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.03 12:00:45" (1/1) ... [2022-03-21 00:00:45,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-21 00:00:45,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-21 00:00:45,856 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/floppy.i.cil-3.c[77246,77259] [2022-03-21 00:00:46,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-21 00:00:46,346 INFO L203 MainTranslator]: Completed pre-run [2022-03-21 00:00:46,416 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/floppy.i.cil-3.c[77246,77259] [2022-03-21 00:00:46,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-21 00:00:46,725 INFO L208 MainTranslator]: Completed translation [2022-03-21 00:00:46,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:00:46 WrapperNode [2022-03-21 00:00:46,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-21 00:00:46,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-21 00:00:46,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-21 00:00:46,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-21 00:00:46,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:00:46" (1/1) ... [2022-03-21 00:00:46,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:00:46" (1/1) ... [2022-03-21 00:00:46,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:00:46" (1/1) ... [2022-03-21 00:00:46,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:00:46" (1/1) ... [2022-03-21 00:00:46,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:00:46" (1/1) ... [2022-03-21 00:00:47,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:00:46" (1/1) ... [2022-03-21 00:00:47,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:00:46" (1/1) ... [2022-03-21 00:00:47,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-21 00:00:47,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-21 00:00:47,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-21 00:00:47,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-21 00:00:47,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:00:46" (1/1) ... [2022-03-21 00:00:47,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-21 00:00:47,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:00:47,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-21 00:00:47,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-21 00:00:47,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-21 00:00:47,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-21 00:00:47,199 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-21 00:00:47,200 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-03-21 00:00:47,200 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-03-21 00:00:47,201 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-21 00:00:47,201 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-21 00:00:47,201 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-03-21 00:00:47,201 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyUnload [2022-03-21 00:00:47,201 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyAddDevice [2022-03-21 00:00:47,201 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConfigCallBack [2022-03-21 00:00:47,201 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-03-21 00:00:47,201 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-03-21 00:00:47,202 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-03-21 00:00:47,202 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-03-21 00:00:47,204 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-03-21 00:00:47,204 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-03-21 00:00:47,204 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-03-21 00:00:47,204 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPower [2022-03-21 00:00:47,204 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyReadWrite [2022-03-21 00:00:47,204 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInterpretError [2022-03-21 00:00:47,204 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFinishOperation [2022-03-21 00:00:47,204 INFO L138 BoogieDeclarations]: Found implementation of procedure FlStartDrive [2022-03-21 00:00:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDatarateSpecifyConfigure [2022-03-21 00:00:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure FlRecalibrateDrive [2022-03-21 00:00:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDetermineMediaType [2022-03-21 00:00:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAllocateIoBuffer [2022-03-21 00:00:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFreeIoBuffer [2022-03-21 00:00:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyThread [2022-03-21 00:00:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConsolidateMediaTypeWithBootSector [2022-03-21 00:00:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckBootSector [2022-03-21 00:00:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWriteTrack [2022-03-21 00:00:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWrite [2022-03-21 00:00:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFormat [2022-03-21 00:00:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-03-21 00:00:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure FlIssueCommand [2022-03-21 00:00:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInitializeControllerHardware [2022-03-21 00:00:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-03-21 00:00:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure FlHdbit [2022-03-21 00:00:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-03-21 00:00:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCancelQueuedRequest [2022-03-21 00:00:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-03-21 00:00:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-21 00:00:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-21 00:00:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-03-21 00:00:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-03-21 00:00:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-03-21 00:00:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-03-21 00:00:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-03-21 00:00:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-03-21 00:00:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-03-21 00:00:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-03-21 00:00:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-03-21 00:00:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-03-21 00:00:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-21 00:00:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-03-21 00:00:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-03-21 00:00:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-03-21 00:00:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-21 00:00:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-03-21 00:00:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-03-21 00:00:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-03-21 00:00:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-03-21 00:00:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-21 00:00:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-21 00:00:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-03-21 00:00:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-21 00:00:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-03-21 00:00:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-21 00:00:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-21 00:00:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-21 00:00:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-03-21 00:00:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-03-21 00:00:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-03-21 00:00:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-03-21 00:00:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-03-21 00:00:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-03-21 00:00:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-03-21 00:00:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-21 00:00:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-21 00:00:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-03-21 00:00:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-03-21 00:00:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-03-21 00:00:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-03-21 00:00:47,211 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-03-21 00:00:47,211 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-03-21 00:00:47,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-21 00:00:47,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-03-21 00:00:47,212 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-21 00:00:47,212 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-03-21 00:00:47,212 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-21 00:00:47,212 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-03-21 00:00:47,212 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-03-21 00:00:47,212 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-03-21 00:00:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-03-21 00:00:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-03-21 00:00:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-03-21 00:00:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-03-21 00:00:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-03-21 00:00:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-03-21 00:00:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-21 00:00:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-03-21 00:00:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-21 00:00:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-03-21 00:00:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-21 00:00:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-21 00:00:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-21 00:00:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-21 00:00:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-21 00:00:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-21 00:00:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-21 00:00:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-21 00:00:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-03-21 00:00:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2022-03-21 00:00:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-03-21 00:00:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-21 00:00:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-03-21 00:00:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-03-21 00:00:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-03-21 00:00:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-03-21 00:00:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-03-21 00:00:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-03-21 00:00:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-03-21 00:00:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-03-21 00:00:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-03-21 00:00:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-03-21 00:00:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-03-21 00:00:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-21 00:00:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-21 00:00:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-03-21 00:00:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-21 00:00:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-03-21 00:00:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-03-21 00:00:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-03-21 00:00:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-21 00:00:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-03-21 00:00:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-03-21 00:00:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-03-21 00:00:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-03-21 00:00:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-03-21 00:00:47,220 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-03-21 00:00:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-03-21 00:00:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-03-21 00:00:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-03-21 00:00:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-03-21 00:00:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-03-21 00:00:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-03-21 00:00:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-03-21 00:00:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-03-21 00:00:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-03-21 00:00:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-21 00:00:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-03-21 00:00:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-03-21 00:00:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-03-21 00:00:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-03-21 00:00:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-21 00:00:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-21 00:00:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-21 00:00:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-03-21 00:00:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-03-21 00:00:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-03-21 00:00:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-21 00:00:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-03-21 00:00:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-03-21 00:00:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-03-21 00:00:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-03-21 00:00:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-21 00:00:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-03-21 00:00:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-03-21 00:00:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-21 00:00:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-21 00:00:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-21 00:00:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-03-21 00:00:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-21 00:00:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-03-21 00:00:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-21 00:00:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-03-21 00:00:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyUnload [2022-03-21 00:00:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure FlConfigCallBack [2022-03-21 00:00:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure FlInitializeControllerHardware [2022-03-21 00:00:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-03-21 00:00:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-03-21 00:00:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyReadWrite [2022-03-21 00:00:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure FlRecalibrateDrive [2022-03-21 00:00:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure FlDatarateSpecifyConfigure [2022-03-21 00:00:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure FlStartDrive [2022-03-21 00:00:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure FlFinishOperation [2022-03-21 00:00:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure FlDetermineMediaType [2022-03-21 00:00:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyThread [2022-03-21 00:00:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWrite [2022-03-21 00:00:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure FlFormat [2022-03-21 00:00:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure FlIssueCommand [2022-03-21 00:00:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-03-21 00:00:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-03-21 00:00:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure FlInterpretError [2022-03-21 00:00:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure FlAllocateIoBuffer [2022-03-21 00:00:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure FlFreeIoBuffer [2022-03-21 00:00:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure FlConsolidateMediaTypeWithBootSector [2022-03-21 00:00:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckBootSector [2022-03-21 00:00:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWriteTrack [2022-03-21 00:00:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-03-21 00:00:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyAddDevice [2022-03-21 00:00:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-03-21 00:00:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPower [2022-03-21 00:00:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-03-21 00:00:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-03-21 00:00:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-03-21 00:00:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-03-21 00:00:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCancelQueuedRequest [2022-03-21 00:00:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-03-21 00:00:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure FlHdbit [2022-03-21 00:00:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-21 00:00:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-21 00:00:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-21 00:00:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-21 00:00:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-21 00:00:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-21 00:00:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-03-21 00:00:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-21 00:00:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-03-21 00:00:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-21 00:00:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-21 00:00:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-21 00:00:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-21 00:00:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-03-21 00:00:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-21 00:00:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-21 00:00:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-21 00:00:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-21 00:00:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-21 00:00:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-21 00:00:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-21 00:00:47,896 INFO L234 CfgBuilder]: Building ICFG [2022-03-21 00:00:47,899 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-21 00:00:47,915 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:00:47,983 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:00:47,984 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:00:47,984 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:00:47,996 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:00:47,997 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:00:50,714 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:00:50,721 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:00:50,721 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:00:50,723 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:00:50,742 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:00:50,743 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:00:50,747 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:00:50,758 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:00:50,758 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:00:50,809 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:00:50,819 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:00:50,819 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:00:50,819 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:00:50,833 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:00:50,833 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:00:50,834 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:00:50,844 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:00:50,845 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:00:50,908 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:00:50,985 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-03-21 00:00:50,985 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-03-21 00:00:51,071 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:00:51,083 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:00:51,083 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:00:51,084 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:00:51,089 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:00:51,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:00:51,091 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:00:51,108 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:00:51,109 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:00:51,123 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:00:51,130 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:00:51,131 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:00:51,132 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:00:51,161 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:00:51,162 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:00:59,407 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:00:59,425 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-21 00:00:59,425 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-21 00:00:59,489 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:00:59,976 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-03-21 00:00:59,976 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-03-21 00:01:00,372 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:00,376 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:00,376 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:00,459 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:00,492 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-03-21 00:01:00,492 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-03-21 00:01:00,495 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:00,641 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-21 00:01:00,641 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-21 00:01:00,642 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:00,704 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-03-21 00:01:00,704 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-03-21 00:01:11,911 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:11,915 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:11,916 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:12,083 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:12,087 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:12,087 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:12,118 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:14,413 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-03-21 00:01:14,414 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-03-21 00:01:14,458 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:14,671 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-03-21 00:01:14,671 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-03-21 00:01:14,673 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:14,690 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-21 00:01:14,690 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-21 00:01:14,690 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:14,732 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-21 00:01:14,733 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-21 00:01:14,736 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:14,746 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-21 00:01:14,746 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-21 00:01:14,783 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:14,788 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:14,788 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:14,798 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:14,803 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-21 00:01:14,803 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-21 00:01:14,804 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:14,880 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2022-03-21 00:01:14,881 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2022-03-21 00:01:14,935 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-21 00:01:17,327 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-03-21 00:01:17,327 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-03-21 00:01:17,393 INFO L275 CfgBuilder]: Performing block encoding [2022-03-21 00:01:17,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-21 00:01:17,417 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-03-21 00:01:17,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.03 12:01:17 BoogieIcfgContainer [2022-03-21 00:01:17,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-21 00:01:17,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-21 00:01:17,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-21 00:01:17,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-21 00:01:17,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.03 12:00:45" (1/3) ... [2022-03-21 00:01:17,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d736efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.03 12:01:17, skipping insertion in model container [2022-03-21 00:01:17,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.03 12:00:46" (2/3) ... [2022-03-21 00:01:17,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d736efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.03 12:01:17, skipping insertion in model container [2022-03-21 00:01:17,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.03 12:01:17" (3/3) ... [2022-03-21 00:01:17,427 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2022-03-21 00:01:17,431 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-21 00:01:17,431 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-21 00:01:17,468 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-21 00:01:17,474 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-21 00:01:17,474 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-21 00:01:17,520 INFO L276 IsEmpty]: Start isEmpty. Operand has 1463 states, 1158 states have (on average 1.5215889464594128) internal successors, (1762), 1199 states have internal predecessors, (1762), 227 states have call successors, (227), 73 states have call predecessors, (227), 73 states have return successors, (227), 221 states have call predecessors, (227), 227 states have call successors, (227) [2022-03-21 00:01:17,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-21 00:01:17,527 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:01:17,527 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:01:17,528 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:01:17,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:01:17,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1208806804, now seen corresponding path program 1 times [2022-03-21 00:01:17,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:01:17,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [393398754] [2022-03-21 00:01:17,548 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:01:17,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1208806804, now seen corresponding path program 2 times [2022-03-21 00:01:17,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:01:17,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652430111] [2022-03-21 00:01:17,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:01:17,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:01:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:18,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:01:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:18,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:01:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:18,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:01:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:18,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:01:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:18,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:01:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:18,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:01:18,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:01:18,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652430111] [2022-03-21 00:01:18,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652430111] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:01:18,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:01:18,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-21 00:01:18,736 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:01:18,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [393398754] [2022-03-21 00:01:18,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [393398754] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:01:18,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:01:18,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-21 00:01:18,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455955895] [2022-03-21 00:01:18,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:01:18,742 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-21 00:01:18,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:01:18,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-21 00:01:18,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-21 00:01:18,782 INFO L87 Difference]: Start difference. First operand has 1463 states, 1158 states have (on average 1.5215889464594128) internal successors, (1762), 1199 states have internal predecessors, (1762), 227 states have call successors, (227), 73 states have call predecessors, (227), 73 states have return successors, (227), 221 states have call predecessors, (227), 227 states have call successors, (227) Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-21 00:01:27,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:01:28,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:01:28,679 INFO L93 Difference]: Finished difference Result 1453 states and 2231 transitions. [2022-03-21 00:01:28,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-21 00:01:28,681 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-03-21 00:01:28,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:01:28,699 INFO L225 Difference]: With dead ends: 1453 [2022-03-21 00:01:28,699 INFO L226 Difference]: Without dead ends: 858 [2022-03-21 00:01:28,707 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-03-21 00:01:28,709 INFO L913 BasicCegarLoop]: 747 mSDtfsCounter, 1345 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 3102 mSolverCounterSat, 617 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 3102 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-03-21 00:01:28,710 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1379 Valid, 1283 Invalid, 3720 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [617 Valid, 3102 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-03-21 00:01:28,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2022-03-21 00:01:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 670. [2022-03-21 00:01:28,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 502 states have (on average 1.4203187250996017) internal successors, (713), 534 states have internal predecessors, (713), 121 states have call successors, (121), 48 states have call predecessors, (121), 46 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-03-21 00:01:28,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 931 transitions. [2022-03-21 00:01:28,928 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 931 transitions. Word has length 37 [2022-03-21 00:01:28,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:01:28,929 INFO L478 AbstractCegarLoop]: Abstraction has 670 states and 931 transitions. [2022-03-21 00:01:28,929 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-21 00:01:28,929 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 931 transitions. [2022-03-21 00:01:28,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-21 00:01:28,930 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:01:28,930 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:01:28,931 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-21 00:01:28,931 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:01:28,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:01:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash 171558063, now seen corresponding path program 1 times [2022-03-21 00:01:28,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:01:28,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1934395359] [2022-03-21 00:01:28,932 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:01:28,932 INFO L85 PathProgramCache]: Analyzing trace with hash 171558063, now seen corresponding path program 2 times [2022-03-21 00:01:28,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:01:28,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559754093] [2022-03-21 00:01:28,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:01:28,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:01:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:29,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:01:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:29,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:01:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:29,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:01:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:29,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:01:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:29,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:01:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:29,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:01:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:29,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:01:29,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:01:29,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559754093] [2022-03-21 00:01:29,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559754093] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:01:29,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:01:29,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:01:29,470 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:01:29,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1934395359] [2022-03-21 00:01:29,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1934395359] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:01:29,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:01:29,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:01:29,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33157780] [2022-03-21 00:01:29,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:01:29,471 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-21 00:01:29,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:01:29,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-21 00:01:29,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-21 00:01:29,472 INFO L87 Difference]: Start difference. First operand 670 states and 931 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-21 00:01:36,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:01:40,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:01:40,716 INFO L93 Difference]: Finished difference Result 1951 states and 2856 transitions. [2022-03-21 00:01:40,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-21 00:01:40,728 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2022-03-21 00:01:40,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:01:40,740 INFO L225 Difference]: With dead ends: 1951 [2022-03-21 00:01:40,740 INFO L226 Difference]: Without dead ends: 1471 [2022-03-21 00:01:40,743 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-21 00:01:40,744 INFO L913 BasicCegarLoop]: 940 mSDtfsCounter, 3479 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 3501 mSolverCounterSat, 1403 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3520 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 4905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1403 IncrementalHoareTripleChecker+Valid, 3501 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:01:40,744 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3520 Valid, 1666 Invalid, 4905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1403 Valid, 3501 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2022-03-21 00:01:40,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2022-03-21 00:01:40,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1230. [2022-03-21 00:01:40,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 946 states have (on average 1.4038054968287526) internal successors, (1328), 977 states have internal predecessors, (1328), 187 states have call successors, (187), 83 states have call predecessors, (187), 96 states have return successors, (247), 179 states have call predecessors, (247), 171 states have call successors, (247) [2022-03-21 00:01:40,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1762 transitions. [2022-03-21 00:01:40,940 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1762 transitions. Word has length 42 [2022-03-21 00:01:40,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:01:40,941 INFO L478 AbstractCegarLoop]: Abstraction has 1230 states and 1762 transitions. [2022-03-21 00:01:40,941 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-21 00:01:40,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1762 transitions. [2022-03-21 00:01:40,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-21 00:01:40,944 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:01:40,944 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:01:40,944 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-21 00:01:40,945 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:01:40,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:01:40,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1220689, now seen corresponding path program 1 times [2022-03-21 00:01:40,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:01:40,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1225533547] [2022-03-21 00:01:40,946 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:01:40,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1220689, now seen corresponding path program 2 times [2022-03-21 00:01:40,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:01:40,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333580184] [2022-03-21 00:01:40,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:01:40,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:01:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:41,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:01:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:41,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:01:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:41,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:01:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:41,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:01:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:41,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:01:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:41,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:01:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:41,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-21 00:01:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:41,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:01:41,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:01:41,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333580184] [2022-03-21 00:01:41,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333580184] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:01:41,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:01:41,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:01:41,714 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:01:41,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1225533547] [2022-03-21 00:01:41,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1225533547] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:01:41,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:01:41,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:01:41,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024985030] [2022-03-21 00:01:41,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:01:41,715 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-21 00:01:41,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:01:41,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-21 00:01:41,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-21 00:01:41,717 INFO L87 Difference]: Start difference. First operand 1230 states and 1762 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-21 00:01:48,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:01:52,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:01:52,576 INFO L93 Difference]: Finished difference Result 2279 states and 3379 transitions. [2022-03-21 00:01:52,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-21 00:01:52,576 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2022-03-21 00:01:52,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:01:52,590 INFO L225 Difference]: With dead ends: 2279 [2022-03-21 00:01:52,590 INFO L226 Difference]: Without dead ends: 2260 [2022-03-21 00:01:52,595 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-21 00:01:52,600 INFO L913 BasicCegarLoop]: 722 mSDtfsCounter, 3868 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 2853 mSolverCounterSat, 1490 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3928 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 4344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1490 IncrementalHoareTripleChecker+Valid, 2853 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-03-21 00:01:52,601 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3928 Valid, 1301 Invalid, 4344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1490 Valid, 2853 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-03-21 00:01:52,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2022-03-21 00:01:52,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 1905. [2022-03-21 00:01:52,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1476 states have (on average 1.420731707317073) internal successors, (2097), 1527 states have internal predecessors, (2097), 279 states have call successors, (279), 129 states have call predecessors, (279), 149 states have return successors, (393), 262 states have call predecessors, (393), 263 states have call successors, (393) [2022-03-21 00:01:52,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2769 transitions. [2022-03-21 00:01:52,924 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2769 transitions. Word has length 54 [2022-03-21 00:01:52,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:01:52,926 INFO L478 AbstractCegarLoop]: Abstraction has 1905 states and 2769 transitions. [2022-03-21 00:01:52,926 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-21 00:01:52,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2769 transitions. [2022-03-21 00:01:52,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-21 00:01:52,934 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:01:52,934 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:01:52,935 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-21 00:01:52,935 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:01:52,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:01:52,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1955103331, now seen corresponding path program 1 times [2022-03-21 00:01:52,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:01:52,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1553499151] [2022-03-21 00:01:52,937 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:01:52,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1955103331, now seen corresponding path program 2 times [2022-03-21 00:01:52,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:01:52,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586204892] [2022-03-21 00:01:52,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:01:52,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:01:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:53,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:01:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:53,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:01:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:53,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:01:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:53,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:01:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:53,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:01:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:53,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:01:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:01:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:01:53,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:01:53,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586204892] [2022-03-21 00:01:53,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586204892] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:01:53,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:01:53,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:01:53,634 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:01:53,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1553499151] [2022-03-21 00:01:53,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1553499151] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:01:53,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:01:53,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:01:53,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356528234] [2022-03-21 00:01:53,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:01:53,640 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-21 00:01:53,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:01:53,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-21 00:01:53,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-21 00:01:53,641 INFO L87 Difference]: Start difference. First operand 1905 states and 2769 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-21 00:02:02,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:02:04,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:04,366 INFO L93 Difference]: Finished difference Result 2254 states and 3363 transitions. [2022-03-21 00:02:04,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-21 00:02:04,367 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-03-21 00:02:04,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:04,380 INFO L225 Difference]: With dead ends: 2254 [2022-03-21 00:02:04,380 INFO L226 Difference]: Without dead ends: 2250 [2022-03-21 00:02:04,382 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-03-21 00:02:04,383 INFO L913 BasicCegarLoop]: 726 mSDtfsCounter, 1720 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 3120 mSolverCounterSat, 754 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 3875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 3120 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-03-21 00:02:04,383 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 1278 Invalid, 3875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 3120 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2022-03-21 00:02:04,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2022-03-21 00:02:04,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1942. [2022-03-21 00:02:04,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1509 states have (on average 1.420808482438701) internal successors, (2144), 1557 states have internal predecessors, (2144), 281 states have call successors, (281), 132 states have call predecessors, (281), 151 states have return successors, (395), 264 states have call predecessors, (395), 265 states have call successors, (395) [2022-03-21 00:02:04,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 2820 transitions. [2022-03-21 00:02:04,742 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 2820 transitions. Word has length 55 [2022-03-21 00:02:04,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:04,743 INFO L478 AbstractCegarLoop]: Abstraction has 1942 states and 2820 transitions. [2022-03-21 00:02:04,743 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-21 00:02:04,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 2820 transitions. [2022-03-21 00:02:04,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-21 00:02:04,744 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:04,744 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:04,744 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-21 00:02:04,744 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:04,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:04,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1599289490, now seen corresponding path program 1 times [2022-03-21 00:02:04,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:04,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [585239841] [2022-03-21 00:02:04,745 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:02:04,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1599289490, now seen corresponding path program 2 times [2022-03-21 00:02:04,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:04,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968617508] [2022-03-21 00:02:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:04,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:05,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:05,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:02:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:05,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:02:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:05,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:02:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:05,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:05,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:02:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:05,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:02:05,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:05,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968617508] [2022-03-21 00:02:05,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968617508] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:05,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:05,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:02:05,373 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:02:05,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [585239841] [2022-03-21 00:02:05,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [585239841] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:05,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:05,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:02:05,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729551958] [2022-03-21 00:02:05,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:02:05,374 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-21 00:02:05,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:05,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-21 00:02:05,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-21 00:02:05,375 INFO L87 Difference]: Start difference. First operand 1942 states and 2820 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-21 00:02:13,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:02:19,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:19,549 INFO L93 Difference]: Finished difference Result 3881 states and 5849 transitions. [2022-03-21 00:02:19,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-21 00:02:19,550 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-03-21 00:02:19,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:19,572 INFO L225 Difference]: With dead ends: 3881 [2022-03-21 00:02:19,572 INFO L226 Difference]: Without dead ends: 3878 [2022-03-21 00:02:19,575 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-21 00:02:19,576 INFO L913 BasicCegarLoop]: 1153 mSDtfsCounter, 2146 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 4387 mSolverCounterSat, 913 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2192 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 5301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 913 IncrementalHoareTripleChecker+Valid, 4387 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-03-21 00:02:19,576 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2192 Valid, 1874 Invalid, 5301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [913 Valid, 4387 Invalid, 1 Unknown, 0 Unchecked, 12.3s Time] [2022-03-21 00:02:19,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2022-03-21 00:02:20,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3105. [2022-03-21 00:02:20,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3105 states, 2444 states have (on average 1.4320785597381342) internal successors, (3500), 2499 states have internal predecessors, (3500), 415 states have call successors, (415), 218 states have call predecessors, (415), 245 states have return successors, (609), 399 states have call predecessors, (609), 399 states have call successors, (609) [2022-03-21 00:02:20,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 4524 transitions. [2022-03-21 00:02:20,256 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 4524 transitions. Word has length 55 [2022-03-21 00:02:20,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:20,259 INFO L478 AbstractCegarLoop]: Abstraction has 3105 states and 4524 transitions. [2022-03-21 00:02:20,259 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-21 00:02:20,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 4524 transitions. [2022-03-21 00:02:20,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-21 00:02:20,263 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:20,263 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:20,264 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-21 00:02:20,264 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:20,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:20,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2095199445, now seen corresponding path program 1 times [2022-03-21 00:02:20,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:20,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2005217192] [2022-03-21 00:02:20,265 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:02:20,265 INFO L85 PathProgramCache]: Analyzing trace with hash 2095199445, now seen corresponding path program 2 times [2022-03-21 00:02:20,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:20,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502228915] [2022-03-21 00:02:20,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:20,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:20,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:20,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:02:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:20,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:02:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:20,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:02:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:20,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:20,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:02:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:02:20,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:20,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502228915] [2022-03-21 00:02:20,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502228915] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:20,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:20,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:02:20,937 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:02:20,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2005217192] [2022-03-21 00:02:20,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2005217192] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:20,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:20,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:02:20,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559096008] [2022-03-21 00:02:20,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:02:20,938 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-21 00:02:20,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:20,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-21 00:02:20,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:02:20,939 INFO L87 Difference]: Start difference. First operand 3105 states and 4524 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-21 00:02:30,516 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:02:40,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:40,197 INFO L93 Difference]: Finished difference Result 6653 states and 9861 transitions. [2022-03-21 00:02:40,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-21 00:02:40,198 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-03-21 00:02:40,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:40,217 INFO L225 Difference]: With dead ends: 6653 [2022-03-21 00:02:40,217 INFO L226 Difference]: Without dead ends: 3833 [2022-03-21 00:02:40,230 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-03-21 00:02:40,231 INFO L913 BasicCegarLoop]: 981 mSDtfsCounter, 5008 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 6682 mSolverCounterSat, 2191 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5054 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 8874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2191 IncrementalHoareTripleChecker+Valid, 6682 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-03-21 00:02:40,231 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5054 Valid, 2055 Invalid, 8874 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2191 Valid, 6682 Invalid, 1 Unknown, 0 Unchecked, 15.6s Time] [2022-03-21 00:02:40,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2022-03-21 00:02:40,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3099. [2022-03-21 00:02:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 2438 states have (on average 1.4298605414273995) internal successors, (3486), 2493 states have internal predecessors, (3486), 415 states have call successors, (415), 218 states have call predecessors, (415), 245 states have return successors, (609), 399 states have call predecessors, (609), 399 states have call successors, (609) [2022-03-21 00:02:40,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 4510 transitions. [2022-03-21 00:02:40,878 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 4510 transitions. Word has length 56 [2022-03-21 00:02:40,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:40,878 INFO L478 AbstractCegarLoop]: Abstraction has 3099 states and 4510 transitions. [2022-03-21 00:02:40,878 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-21 00:02:40,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 4510 transitions. [2022-03-21 00:02:40,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-21 00:02:40,880 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:40,880 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:40,880 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-21 00:02:40,880 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:40,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:40,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2082718779, now seen corresponding path program 1 times [2022-03-21 00:02:40,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:40,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [792400156] [2022-03-21 00:02:40,881 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:02:40,882 INFO L85 PathProgramCache]: Analyzing trace with hash 2082718779, now seen corresponding path program 2 times [2022-03-21 00:02:40,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:40,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669524184] [2022-03-21 00:02:40,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:40,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:41,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:41,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:02:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:41,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:02:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:41,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:02:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:41,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:41,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:02:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:41,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-21 00:02:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:41,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:41,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:02:41,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:41,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669524184] [2022-03-21 00:02:41,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669524184] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:41,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:41,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:02:41,487 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:02:41,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [792400156] [2022-03-21 00:02:41,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [792400156] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:41,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:41,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:02:41,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454611771] [2022-03-21 00:02:41,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:02:41,488 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-21 00:02:41,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:41,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-21 00:02:41,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:02:41,489 INFO L87 Difference]: Start difference. First operand 3099 states and 4510 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:02:48,988 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:02:55,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:55,234 INFO L93 Difference]: Finished difference Result 4462 states and 6724 transitions. [2022-03-21 00:02:55,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-21 00:02:55,234 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 56 [2022-03-21 00:02:55,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:55,258 INFO L225 Difference]: With dead ends: 4462 [2022-03-21 00:02:55,259 INFO L226 Difference]: Without dead ends: 4457 [2022-03-21 00:02:55,262 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2022-03-21 00:02:55,263 INFO L913 BasicCegarLoop]: 1060 mSDtfsCounter, 2954 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 4423 mSolverCounterSat, 1423 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2988 SdHoareTripleChecker+Valid, 2028 SdHoareTripleChecker+Invalid, 5847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1423 IncrementalHoareTripleChecker+Valid, 4423 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-03-21 00:02:55,263 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2988 Valid, 2028 Invalid, 5847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1423 Valid, 4423 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2022-03-21 00:02:55,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4457 states. [2022-03-21 00:02:55,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 3755. [2022-03-21 00:02:55,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 2956 states have (on average 1.4336941813261164) internal successors, (4238), 3023 states have internal predecessors, (4238), 500 states have call successors, (500), 258 states have call predecessors, (500), 298 states have return successors, (751), 491 states have call predecessors, (751), 484 states have call successors, (751) [2022-03-21 00:02:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5489 transitions. [2022-03-21 00:02:55,946 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5489 transitions. Word has length 56 [2022-03-21 00:02:55,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:55,947 INFO L478 AbstractCegarLoop]: Abstraction has 3755 states and 5489 transitions. [2022-03-21 00:02:55,947 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:02:55,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5489 transitions. [2022-03-21 00:02:55,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-21 00:02:55,949 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:55,949 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:55,949 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-21 00:02:55,949 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:55,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:55,949 INFO L85 PathProgramCache]: Analyzing trace with hash 590370335, now seen corresponding path program 1 times [2022-03-21 00:02:55,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:55,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1833379470] [2022-03-21 00:02:55,950 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:02:55,950 INFO L85 PathProgramCache]: Analyzing trace with hash 590370335, now seen corresponding path program 2 times [2022-03-21 00:02:55,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:55,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575553671] [2022-03-21 00:02:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:55,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:56,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:56,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:02:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:56,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:02:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:56,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:02:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:56,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:56,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:02:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:56,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-21 00:02:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:56,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:02:56,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:56,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575553671] [2022-03-21 00:02:56,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575553671] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:56,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:56,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:02:56,673 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:02:56,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1833379470] [2022-03-21 00:02:56,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1833379470] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:56,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:56,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:02:56,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412688857] [2022-03-21 00:02:56,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:02:56,673 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-21 00:02:56,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:56,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-21 00:02:56,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:02:56,674 INFO L87 Difference]: Start difference. First operand 3755 states and 5489 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:03:05,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:03:10,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:03:13,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:03:13,830 INFO L93 Difference]: Finished difference Result 4457 states and 6713 transitions. [2022-03-21 00:03:13,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-21 00:03:13,831 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2022-03-21 00:03:13,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:03:13,853 INFO L225 Difference]: With dead ends: 4457 [2022-03-21 00:03:13,853 INFO L226 Difference]: Without dead ends: 4451 [2022-03-21 00:03:13,857 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2022-03-21 00:03:13,857 INFO L913 BasicCegarLoop]: 1033 mSDtfsCounter, 4616 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 4434 mSolverCounterSat, 2197 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4666 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 6633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2197 IncrementalHoareTripleChecker+Valid, 4434 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-03-21 00:03:13,857 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4666 Valid, 1836 Invalid, 6633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2197 Valid, 4434 Invalid, 2 Unknown, 0 Unchecked, 13.7s Time] [2022-03-21 00:03:13,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2022-03-21 00:03:14,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 3755. [2022-03-21 00:03:14,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 2956 states have (on average 1.4333558863328824) internal successors, (4237), 3023 states have internal predecessors, (4237), 500 states have call successors, (500), 258 states have call predecessors, (500), 298 states have return successors, (751), 491 states have call predecessors, (751), 484 states have call successors, (751) [2022-03-21 00:03:14,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5488 transitions. [2022-03-21 00:03:14,544 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5488 transitions. Word has length 57 [2022-03-21 00:03:14,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:03:14,544 INFO L478 AbstractCegarLoop]: Abstraction has 3755 states and 5488 transitions. [2022-03-21 00:03:14,544 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:03:14,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5488 transitions. [2022-03-21 00:03:14,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-21 00:03:14,546 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:03:14,546 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:03:14,546 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-21 00:03:14,547 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:03:14,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:03:14,547 INFO L85 PathProgramCache]: Analyzing trace with hash 259939624, now seen corresponding path program 1 times [2022-03-21 00:03:14,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:14,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [196021866] [2022-03-21 00:03:14,547 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:03:14,548 INFO L85 PathProgramCache]: Analyzing trace with hash 259939624, now seen corresponding path program 2 times [2022-03-21 00:03:14,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:03:14,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161565970] [2022-03-21 00:03:14,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:03:14,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:03:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:14,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:03:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:14,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:03:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:14,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:03:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:15,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:03:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:15,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:15,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:03:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:15,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-21 00:03:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:15,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:03:15,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:03:15,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161565970] [2022-03-21 00:03:15,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161565970] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:15,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:15,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:03:15,223 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:03:15,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [196021866] [2022-03-21 00:03:15,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [196021866] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:15,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:15,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:03:15,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642936137] [2022-03-21 00:03:15,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:03:15,224 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-21 00:03:15,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:15,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-21 00:03:15,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:03:15,225 INFO L87 Difference]: Start difference. First operand 3755 states and 5488 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:03:21,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:03:26,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:03:33,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:03:33,187 INFO L93 Difference]: Finished difference Result 4453 states and 6707 transitions. [2022-03-21 00:03:33,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-21 00:03:33,187 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-03-21 00:03:33,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:03:33,203 INFO L225 Difference]: With dead ends: 4453 [2022-03-21 00:03:33,203 INFO L226 Difference]: Without dead ends: 4447 [2022-03-21 00:03:33,205 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2022-03-21 00:03:33,205 INFO L913 BasicCegarLoop]: 1031 mSDtfsCounter, 4047 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 4972 mSolverCounterSat, 1939 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4097 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 6913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1939 IncrementalHoareTripleChecker+Valid, 4972 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-03-21 00:03:33,206 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4097 Valid, 1932 Invalid, 6913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1939 Valid, 4972 Invalid, 2 Unknown, 0 Unchecked, 14.4s Time] [2022-03-21 00:03:33,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4447 states. [2022-03-21 00:03:33,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4447 to 3755. [2022-03-21 00:03:33,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 2956 states have (on average 1.4330175913396481) internal successors, (4236), 3023 states have internal predecessors, (4236), 500 states have call successors, (500), 258 states have call predecessors, (500), 298 states have return successors, (751), 491 states have call predecessors, (751), 484 states have call successors, (751) [2022-03-21 00:03:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5487 transitions. [2022-03-21 00:03:33,914 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5487 transitions. Word has length 58 [2022-03-21 00:03:33,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:03:33,914 INFO L478 AbstractCegarLoop]: Abstraction has 3755 states and 5487 transitions. [2022-03-21 00:03:33,915 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:03:33,915 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5487 transitions. [2022-03-21 00:03:33,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-21 00:03:33,917 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:03:33,917 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:03:33,917 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-21 00:03:33,917 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:03:33,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:03:33,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1749808949, now seen corresponding path program 1 times [2022-03-21 00:03:33,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:33,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1942073187] [2022-03-21 00:03:33,918 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:03:33,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1749808949, now seen corresponding path program 2 times [2022-03-21 00:03:33,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:03:33,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469620478] [2022-03-21 00:03:33,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:03:33,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:03:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:34,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:03:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:34,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:03:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:34,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:03:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:34,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:03:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:34,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:34,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:03:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:34,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-21 00:03:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:34,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:34,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:03:34,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:03:34,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469620478] [2022-03-21 00:03:34,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469620478] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:34,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:34,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:03:34,572 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:03:34,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1942073187] [2022-03-21 00:03:34,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1942073187] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:34,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:34,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:03:34,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591475215] [2022-03-21 00:03:34,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:03:34,573 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-21 00:03:34,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:34,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-21 00:03:34,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:03:34,574 INFO L87 Difference]: Start difference. First operand 3755 states and 5487 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:03:44,131 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:03:47,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:03:47,911 INFO L93 Difference]: Finished difference Result 4464 states and 6725 transitions. [2022-03-21 00:03:47,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-21 00:03:47,912 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 60 [2022-03-21 00:03:47,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:03:47,931 INFO L225 Difference]: With dead ends: 4464 [2022-03-21 00:03:47,931 INFO L226 Difference]: Without dead ends: 4447 [2022-03-21 00:03:47,936 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-03-21 00:03:47,937 INFO L913 BasicCegarLoop]: 723 mSDtfsCounter, 1847 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 5204 mSolverCounterSat, 828 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 6033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 828 IncrementalHoareTripleChecker+Valid, 5204 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-03-21 00:03:47,937 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1886 Valid, 1906 Invalid, 6033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [828 Valid, 5204 Invalid, 1 Unknown, 0 Unchecked, 11.5s Time] [2022-03-21 00:03:47,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4447 states. [2022-03-21 00:03:48,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4447 to 3753. [2022-03-21 00:03:48,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3753 states, 2955 states have (on average 1.4328257191201355) internal successors, (4234), 3022 states have internal predecessors, (4234), 499 states have call successors, (499), 258 states have call predecessors, (499), 298 states have return successors, (750), 490 states have call predecessors, (750), 483 states have call successors, (750) [2022-03-21 00:03:48,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3753 states to 3753 states and 5483 transitions. [2022-03-21 00:03:48,730 INFO L78 Accepts]: Start accepts. Automaton has 3753 states and 5483 transitions. Word has length 60 [2022-03-21 00:03:48,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:03:48,730 INFO L478 AbstractCegarLoop]: Abstraction has 3753 states and 5483 transitions. [2022-03-21 00:03:48,730 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:03:48,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3753 states and 5483 transitions. [2022-03-21 00:03:48,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-21 00:03:48,732 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:03:48,732 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:03:48,732 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-21 00:03:48,732 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:03:48,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:03:48,733 INFO L85 PathProgramCache]: Analyzing trace with hash -449310488, now seen corresponding path program 1 times [2022-03-21 00:03:48,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:48,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [740701238] [2022-03-21 00:03:48,733 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:03:48,733 INFO L85 PathProgramCache]: Analyzing trace with hash -449310488, now seen corresponding path program 2 times [2022-03-21 00:03:48,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:03:48,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907820797] [2022-03-21 00:03:48,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:03:48,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:03:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:49,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:03:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:49,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:03:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:49,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:03:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:49,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:03:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:49,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:03:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:49,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-21 00:03:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:49,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:03:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:03:49,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:03:49,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:03:49,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907820797] [2022-03-21 00:03:49,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907820797] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:49,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:49,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:03:49,401 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:03:49,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [740701238] [2022-03-21 00:03:49,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [740701238] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:03:49,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:03:49,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:03:49,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024448393] [2022-03-21 00:03:49,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:03:49,402 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-21 00:03:49,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:03:49,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-21 00:03:49,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:03:49,403 INFO L87 Difference]: Start difference. First operand 3753 states and 5483 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:03:55,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:03:57,636 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:04:03,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:04:06,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:04:06,943 INFO L93 Difference]: Finished difference Result 4462 states and 6721 transitions. [2022-03-21 00:04:06,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-21 00:04:06,944 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 59 [2022-03-21 00:04:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:04:06,961 INFO L225 Difference]: With dead ends: 4462 [2022-03-21 00:04:06,961 INFO L226 Difference]: Without dead ends: 4440 [2022-03-21 00:04:06,964 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-03-21 00:04:06,965 INFO L913 BasicCegarLoop]: 719 mSDtfsCounter, 1783 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 5323 mSolverCounterSat, 744 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1822 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 6070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 5323 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-03-21 00:04:06,965 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1822 Valid, 1847 Invalid, 6070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 5323 Invalid, 3 Unknown, 0 Unchecked, 15.7s Time] [2022-03-21 00:04:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2022-03-21 00:04:07,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 3746. [2022-03-21 00:04:07,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3746 states, 2951 states have (on average 1.4330735343951202) internal successors, (4229), 3018 states have internal predecessors, (4229), 497 states have call successors, (497), 257 states have call predecessors, (497), 297 states have return successors, (748), 488 states have call predecessors, (748), 481 states have call successors, (748) [2022-03-21 00:04:07,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3746 states to 3746 states and 5474 transitions. [2022-03-21 00:04:07,813 INFO L78 Accepts]: Start accepts. Automaton has 3746 states and 5474 transitions. Word has length 59 [2022-03-21 00:04:07,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:04:07,814 INFO L478 AbstractCegarLoop]: Abstraction has 3746 states and 5474 transitions. [2022-03-21 00:04:07,814 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:04:07,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3746 states and 5474 transitions. [2022-03-21 00:04:07,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-21 00:04:07,816 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:04:07,816 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:04:07,816 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-21 00:04:07,816 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:04:07,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:04:07,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1740462473, now seen corresponding path program 1 times [2022-03-21 00:04:07,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:07,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1679439289] [2022-03-21 00:04:07,817 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:04:07,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1740462473, now seen corresponding path program 2 times [2022-03-21 00:04:07,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:04:07,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885055725] [2022-03-21 00:04:07,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:04:07,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:04:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:08,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:04:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:08,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:04:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:08,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:04:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:08,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:04:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:08,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:04:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:08,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:04:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:08,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-21 00:04:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:08,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:04:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:08,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:04:08,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:04:08,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885055725] [2022-03-21 00:04:08,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885055725] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:08,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:04:08,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-21 00:04:08,389 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:04:08,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1679439289] [2022-03-21 00:04:08,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1679439289] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:08,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:04:08,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-21 00:04:08,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609667054] [2022-03-21 00:04:08,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:04:08,389 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-21 00:04:08,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:08,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-21 00:04:08,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:04:08,390 INFO L87 Difference]: Start difference. First operand 3746 states and 5474 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:04:14,456 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:04:21,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:04:21,857 INFO L93 Difference]: Finished difference Result 12172 states and 18769 transitions. [2022-03-21 00:04:21,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-21 00:04:21,858 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-03-21 00:04:21,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:04:21,889 INFO L225 Difference]: With dead ends: 12172 [2022-03-21 00:04:21,889 INFO L226 Difference]: Without dead ends: 8670 [2022-03-21 00:04:21,912 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-03-21 00:04:21,913 INFO L913 BasicCegarLoop]: 920 mSDtfsCounter, 4213 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 3263 mSolverCounterSat, 1892 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4273 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 5156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1892 IncrementalHoareTripleChecker+Valid, 3263 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:04:21,913 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4273 Valid, 1771 Invalid, 5156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1892 Valid, 3263 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2022-03-21 00:04:21,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8670 states. [2022-03-21 00:04:23,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8670 to 7477. [2022-03-21 00:04:23,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7477 states, 5891 states have (on average 1.443388219317603) internal successors, (8503), 6073 states have internal predecessors, (8503), 1008 states have call successors, (1008), 475 states have call predecessors, (1008), 577 states have return successors, (1804), 964 states have call predecessors, (1804), 995 states have call successors, (1804) [2022-03-21 00:04:23,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7477 states to 7477 states and 11315 transitions. [2022-03-21 00:04:23,974 INFO L78 Accepts]: Start accepts. Automaton has 7477 states and 11315 transitions. Word has length 69 [2022-03-21 00:04:23,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:04:23,975 INFO L478 AbstractCegarLoop]: Abstraction has 7477 states and 11315 transitions. [2022-03-21 00:04:23,975 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:04:23,975 INFO L276 IsEmpty]: Start isEmpty. Operand 7477 states and 11315 transitions. [2022-03-21 00:04:23,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-21 00:04:23,977 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:04:23,977 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:04:23,977 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-21 00:04:23,977 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:04:23,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:04:23,977 INFO L85 PathProgramCache]: Analyzing trace with hash -858477288, now seen corresponding path program 1 times [2022-03-21 00:04:23,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:23,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1972993826] [2022-03-21 00:04:23,978 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:04:23,978 INFO L85 PathProgramCache]: Analyzing trace with hash -858477288, now seen corresponding path program 2 times [2022-03-21 00:04:23,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:04:23,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76995203] [2022-03-21 00:04:23,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:04:23,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:04:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:24,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:04:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:24,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:04:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:24,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:04:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:24,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:04:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:24,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:04:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:24,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:04:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:24,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-21 00:04:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:04:24,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:04:24,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76995203] [2022-03-21 00:04:24,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76995203] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:24,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:04:24,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-21 00:04:24,521 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:04:24,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1972993826] [2022-03-21 00:04:24,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1972993826] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:24,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:04:24,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-21 00:04:24,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818435488] [2022-03-21 00:04:24,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:04:24,522 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-21 00:04:24,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:24,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-21 00:04:24,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:04:24,523 INFO L87 Difference]: Start difference. First operand 7477 states and 11315 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-21 00:04:33,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:04:38,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:04:38,886 INFO L93 Difference]: Finished difference Result 15189 states and 23518 transitions. [2022-03-21 00:04:38,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-21 00:04:38,887 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 61 [2022-03-21 00:04:38,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:04:38,926 INFO L225 Difference]: With dead ends: 15189 [2022-03-21 00:04:38,926 INFO L226 Difference]: Without dead ends: 8787 [2022-03-21 00:04:38,962 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-03-21 00:04:38,962 INFO L913 BasicCegarLoop]: 709 mSDtfsCounter, 1515 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 3913 mSolverCounterSat, 647 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 4561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 3913 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:04:38,963 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 1398 Invalid, 4561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 3913 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2022-03-21 00:04:38,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8787 states. [2022-03-21 00:04:40,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8787 to 7633. [2022-03-21 00:04:40,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7633 states, 6047 states have (on average 1.4359186373408301) internal successors, (8683), 6229 states have internal predecessors, (8683), 1008 states have call successors, (1008), 475 states have call predecessors, (1008), 577 states have return successors, (1804), 964 states have call predecessors, (1804), 995 states have call successors, (1804) [2022-03-21 00:04:40,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7633 states to 7633 states and 11495 transitions. [2022-03-21 00:04:40,765 INFO L78 Accepts]: Start accepts. Automaton has 7633 states and 11495 transitions. Word has length 61 [2022-03-21 00:04:40,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:04:40,765 INFO L478 AbstractCegarLoop]: Abstraction has 7633 states and 11495 transitions. [2022-03-21 00:04:40,765 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-21 00:04:40,765 INFO L276 IsEmpty]: Start isEmpty. Operand 7633 states and 11495 transitions. [2022-03-21 00:04:40,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-21 00:04:40,767 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:04:40,767 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:04:40,767 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-21 00:04:40,767 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:04:40,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:04:40,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1733980064, now seen corresponding path program 1 times [2022-03-21 00:04:40,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:40,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1611656570] [2022-03-21 00:04:40,768 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:04:40,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1733980064, now seen corresponding path program 2 times [2022-03-21 00:04:40,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:04:40,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341324376] [2022-03-21 00:04:40,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:04:40,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:04:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:41,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:04:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:41,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:04:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:41,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:04:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:41,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:04:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:41,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:04:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:41,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:04:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:41,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-21 00:04:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:41,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:04:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:04:41,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:04:41,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341324376] [2022-03-21 00:04:41,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341324376] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:41,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:04:41,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:04:41,450 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:04:41,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1611656570] [2022-03-21 00:04:41,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1611656570] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:41,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:04:41,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:04:41,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386420455] [2022-03-21 00:04:41,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:04:41,451 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-21 00:04:41,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:41,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-21 00:04:41,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:04:41,452 INFO L87 Difference]: Start difference. First operand 7633 states and 11495 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:04:49,416 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:04:54,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:04:54,936 INFO L93 Difference]: Finished difference Result 8715 states and 13445 transitions. [2022-03-21 00:04:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-21 00:04:54,936 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 64 [2022-03-21 00:04:54,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:04:54,971 INFO L225 Difference]: With dead ends: 8715 [2022-03-21 00:04:54,971 INFO L226 Difference]: Without dead ends: 8699 [2022-03-21 00:04:54,977 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2022-03-21 00:04:54,978 INFO L913 BasicCegarLoop]: 718 mSDtfsCounter, 1954 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 4557 mSolverCounterSat, 865 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 5423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 865 IncrementalHoareTripleChecker+Valid, 4557 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-03-21 00:04:54,978 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1992 Valid, 1733 Invalid, 5423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [865 Valid, 4557 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-03-21 00:04:54,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8699 states. [2022-03-21 00:04:56,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8699 to 7639. [2022-03-21 00:04:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7639 states, 6050 states have (on average 1.4357024793388429) internal successors, (8686), 6235 states have internal predecessors, (8686), 1008 states have call successors, (1008), 475 states have call predecessors, (1008), 580 states have return successors, (1826), 964 states have call predecessors, (1826), 995 states have call successors, (1826) [2022-03-21 00:04:56,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7639 states to 7639 states and 11520 transitions. [2022-03-21 00:04:56,743 INFO L78 Accepts]: Start accepts. Automaton has 7639 states and 11520 transitions. Word has length 64 [2022-03-21 00:04:56,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:04:56,743 INFO L478 AbstractCegarLoop]: Abstraction has 7639 states and 11520 transitions. [2022-03-21 00:04:56,743 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:04:56,743 INFO L276 IsEmpty]: Start isEmpty. Operand 7639 states and 11520 transitions. [2022-03-21 00:04:56,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-21 00:04:56,745 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:04:56,745 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:04:56,746 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-21 00:04:56,746 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:04:56,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:04:56,746 INFO L85 PathProgramCache]: Analyzing trace with hash 326599203, now seen corresponding path program 1 times [2022-03-21 00:04:56,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:56,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1570530635] [2022-03-21 00:04:56,747 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:04:56,747 INFO L85 PathProgramCache]: Analyzing trace with hash 326599203, now seen corresponding path program 2 times [2022-03-21 00:04:56,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:04:56,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531500306] [2022-03-21 00:04:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:04:56,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:04:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:57,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:04:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:57,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:04:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:57,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:04:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:57,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:04:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:57,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:04:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:57,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:04:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:57,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-21 00:04:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:57,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-21 00:04:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:04:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:04:57,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:04:57,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531500306] [2022-03-21 00:04:57,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531500306] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:57,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:04:57,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:04:57,365 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:04:57,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1570530635] [2022-03-21 00:04:57,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1570530635] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:04:57,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:04:57,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:04:57,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555995920] [2022-03-21 00:04:57,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:04:57,366 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-21 00:04:57,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:04:57,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-21 00:04:57,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:04:57,367 INFO L87 Difference]: Start difference. First operand 7639 states and 11520 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:05:03,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:05:05,347 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:05:10,923 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:05:16,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:05:16,750 INFO L93 Difference]: Finished difference Result 8707 states and 13419 transitions. [2022-03-21 00:05:16,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-21 00:05:16,751 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 65 [2022-03-21 00:05:16,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:05:16,788 INFO L225 Difference]: With dead ends: 8707 [2022-03-21 00:05:16,788 INFO L226 Difference]: Without dead ends: 8687 [2022-03-21 00:05:16,795 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-03-21 00:05:16,795 INFO L913 BasicCegarLoop]: 727 mSDtfsCounter, 2003 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 4564 mSolverCounterSat, 875 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 5442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 875 IncrementalHoareTripleChecker+Valid, 4564 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:05:16,796 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2041 Valid, 1790 Invalid, 5442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [875 Valid, 4564 Invalid, 3 Unknown, 0 Unchecked, 16.2s Time] [2022-03-21 00:05:16,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8687 states. [2022-03-21 00:05:18,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8687 to 7637. [2022-03-21 00:05:18,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7637 states, 6049 states have (on average 1.4356091916019176) internal successors, (8684), 6234 states have internal predecessors, (8684), 1007 states have call successors, (1007), 475 states have call predecessors, (1007), 580 states have return successors, (1825), 963 states have call predecessors, (1825), 994 states have call successors, (1825) [2022-03-21 00:05:18,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 11516 transitions. [2022-03-21 00:05:18,600 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 11516 transitions. Word has length 65 [2022-03-21 00:05:18,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:05:18,600 INFO L478 AbstractCegarLoop]: Abstraction has 7637 states and 11516 transitions. [2022-03-21 00:05:18,601 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:05:18,601 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 11516 transitions. [2022-03-21 00:05:18,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-21 00:05:18,603 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:05:18,603 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:05:18,603 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-21 00:05:18,603 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:05:18,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:05:18,604 INFO L85 PathProgramCache]: Analyzing trace with hash -455424616, now seen corresponding path program 1 times [2022-03-21 00:05:18,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:05:18,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [417862629] [2022-03-21 00:05:18,604 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:05:18,605 INFO L85 PathProgramCache]: Analyzing trace with hash -455424616, now seen corresponding path program 2 times [2022-03-21 00:05:18,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:05:18,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295301068] [2022-03-21 00:05:18,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:05:18,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:05:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:18,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:05:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:19,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:05:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:19,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:05:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:19,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:05:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:19,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:05:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:19,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-21 00:05:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:19,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-21 00:05:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:19,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-21 00:05:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:05:19,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:05:19,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295301068] [2022-03-21 00:05:19,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295301068] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:05:19,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:05:19,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:05:19,377 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:05:19,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [417862629] [2022-03-21 00:05:19,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [417862629] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:05:19,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:05:19,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:05:19,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297473880] [2022-03-21 00:05:19,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:05:19,378 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-21 00:05:19,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:05:19,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-21 00:05:19,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:05:19,379 INFO L87 Difference]: Start difference. First operand 7637 states and 11516 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:05:29,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:05:35,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:05:35,521 INFO L93 Difference]: Finished difference Result 16296 states and 24880 transitions. [2022-03-21 00:05:35,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-21 00:05:35,522 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-03-21 00:05:35,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:05:35,562 INFO L225 Difference]: With dead ends: 16296 [2022-03-21 00:05:35,562 INFO L226 Difference]: Without dead ends: 8687 [2022-03-21 00:05:35,602 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2022-03-21 00:05:35,602 INFO L913 BasicCegarLoop]: 712 mSDtfsCounter, 1816 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 4964 mSolverCounterSat, 818 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 5783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 818 IncrementalHoareTripleChecker+Valid, 4964 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-03-21 00:05:35,602 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1853 Valid, 1824 Invalid, 5783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [818 Valid, 4964 Invalid, 1 Unknown, 0 Unchecked, 12.7s Time] [2022-03-21 00:05:35,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8687 states. [2022-03-21 00:05:37,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8687 to 7637. [2022-03-21 00:05:37,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7637 states, 6049 states have (on average 1.4354438750206646) internal successors, (8683), 6234 states have internal predecessors, (8683), 1007 states have call successors, (1007), 475 states have call predecessors, (1007), 580 states have return successors, (1825), 963 states have call predecessors, (1825), 994 states have call successors, (1825) [2022-03-21 00:05:37,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 11515 transitions. [2022-03-21 00:05:37,523 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 11515 transitions. Word has length 67 [2022-03-21 00:05:37,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:05:37,523 INFO L478 AbstractCegarLoop]: Abstraction has 7637 states and 11515 transitions. [2022-03-21 00:05:37,523 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:05:37,523 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 11515 transitions. [2022-03-21 00:05:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-21 00:05:37,526 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:05:37,526 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:05:37,526 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-21 00:05:37,526 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:05:37,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:05:37,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2112328753, now seen corresponding path program 1 times [2022-03-21 00:05:37,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:05:37,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1031596607] [2022-03-21 00:05:37,527 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:05:37,527 INFO L85 PathProgramCache]: Analyzing trace with hash -2112328753, now seen corresponding path program 2 times [2022-03-21 00:05:37,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:05:37,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079795523] [2022-03-21 00:05:37,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:05:37,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:05:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:37,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:05:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:37,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:05:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:37,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:05:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:37,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:05:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:38,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:05:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:38,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-21 00:05:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:38,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-21 00:05:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:38,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-21 00:05:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:38,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:05:38,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:05:38,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079795523] [2022-03-21 00:05:38,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079795523] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:05:38,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:05:38,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:05:38,181 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:05:38,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1031596607] [2022-03-21 00:05:38,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1031596607] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:05:38,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:05:38,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:05:38,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566061106] [2022-03-21 00:05:38,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:05:38,182 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-21 00:05:38,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:05:38,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-21 00:05:38,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:05:38,183 INFO L87 Difference]: Start difference. First operand 7637 states and 11515 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:05:46,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:05:52,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:05:52,539 INFO L93 Difference]: Finished difference Result 8702 states and 13411 transitions. [2022-03-21 00:05:52,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-21 00:05:52,539 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 71 [2022-03-21 00:05:52,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:05:52,567 INFO L225 Difference]: With dead ends: 8702 [2022-03-21 00:05:52,567 INFO L226 Difference]: Without dead ends: 8682 [2022-03-21 00:05:52,573 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-03-21 00:05:52,574 INFO L913 BasicCegarLoop]: 723 mSDtfsCounter, 2280 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 4238 mSolverCounterSat, 1050 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2318 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 5289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1050 IncrementalHoareTripleChecker+Valid, 4238 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-03-21 00:05:52,574 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2318 Valid, 1879 Invalid, 5289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1050 Valid, 4238 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2022-03-21 00:05:52,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8682 states. [2022-03-21 00:05:54,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8682 to 7632. [2022-03-21 00:05:54,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7632 states, 6046 states have (on average 1.4354945418458485) internal successors, (8679), 6231 states have internal predecessors, (8679), 1006 states have call successors, (1006), 475 states have call predecessors, (1006), 579 states have return successors, (1823), 961 states have call predecessors, (1823), 993 states have call successors, (1823) [2022-03-21 00:05:54,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7632 states to 7632 states and 11508 transitions. [2022-03-21 00:05:54,467 INFO L78 Accepts]: Start accepts. Automaton has 7632 states and 11508 transitions. Word has length 71 [2022-03-21 00:05:54,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:05:54,468 INFO L478 AbstractCegarLoop]: Abstraction has 7632 states and 11508 transitions. [2022-03-21 00:05:54,468 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:05:54,468 INFO L276 IsEmpty]: Start isEmpty. Operand 7632 states and 11508 transitions. [2022-03-21 00:05:54,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-21 00:05:54,470 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:05:54,470 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:05:54,470 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-21 00:05:54,471 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:05:54,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:05:54,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1256030660, now seen corresponding path program 1 times [2022-03-21 00:05:54,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:05:54,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [727931205] [2022-03-21 00:05:54,472 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:05:54,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1256030660, now seen corresponding path program 2 times [2022-03-21 00:05:54,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:05:54,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942081955] [2022-03-21 00:05:54,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:05:54,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:05:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:54,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:05:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:54,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:05:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:54,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:05:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:54,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:05:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:54,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:05:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:55,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-21 00:05:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:55,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-21 00:05:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:55,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-21 00:05:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:05:55,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:05:55,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942081955] [2022-03-21 00:05:55,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942081955] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:05:55,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:05:55,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-21 00:05:55,216 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:05:55,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [727931205] [2022-03-21 00:05:55,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [727931205] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:05:55,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:05:55,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-21 00:05:55,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926865337] [2022-03-21 00:05:55,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:05:55,216 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-21 00:05:55,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:05:55,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-21 00:05:55,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:05:55,217 INFO L87 Difference]: Start difference. First operand 7632 states and 11508 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-21 00:06:02,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:06:04,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:06:06,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:06:11,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:06:17,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:06:19,586 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:06:21,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:06:30,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:06:30,883 INFO L93 Difference]: Finished difference Result 14550 states and 22479 transitions. [2022-03-21 00:06:30,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-21 00:06:30,884 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2022-03-21 00:06:30,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:06:30,916 INFO L225 Difference]: With dead ends: 14550 [2022-03-21 00:06:30,917 INFO L226 Difference]: Without dead ends: 10272 [2022-03-21 00:06:30,935 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=533, Invalid=2223, Unknown=0, NotChecked=0, Total=2756 [2022-03-21 00:06:30,936 INFO L913 BasicCegarLoop]: 1096 mSDtfsCounter, 3791 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 7978 mSolverCounterSat, 2029 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3799 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 10014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2029 IncrementalHoareTripleChecker+Valid, 7978 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:06:30,936 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3799 Valid, 2399 Invalid, 10014 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2029 Valid, 7978 Invalid, 7 Unknown, 0 Unchecked, 30.0s Time] [2022-03-21 00:06:30,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10272 states. [2022-03-21 00:06:33,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10272 to 8242. [2022-03-21 00:06:33,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8242 states, 6535 states have (on average 1.434583014537108) internal successors, (9375), 6726 states have internal predecessors, (9375), 1073 states have call successors, (1073), 517 states have call predecessors, (1073), 633 states have return successors, (1965), 1033 states have call predecessors, (1965), 1059 states have call successors, (1965) [2022-03-21 00:06:33,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8242 states to 8242 states and 12413 transitions. [2022-03-21 00:06:33,093 INFO L78 Accepts]: Start accepts. Automaton has 8242 states and 12413 transitions. Word has length 72 [2022-03-21 00:06:33,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:06:33,093 INFO L478 AbstractCegarLoop]: Abstraction has 8242 states and 12413 transitions. [2022-03-21 00:06:33,093 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-21 00:06:33,093 INFO L276 IsEmpty]: Start isEmpty. Operand 8242 states and 12413 transitions. [2022-03-21 00:06:33,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-21 00:06:33,095 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:06:33,095 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:06:33,095 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-21 00:06:33,096 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:06:33,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:06:33,096 INFO L85 PathProgramCache]: Analyzing trace with hash -26354390, now seen corresponding path program 1 times [2022-03-21 00:06:33,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:33,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1396996459] [2022-03-21 00:06:33,096 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:06:33,097 INFO L85 PathProgramCache]: Analyzing trace with hash -26354390, now seen corresponding path program 2 times [2022-03-21 00:06:33,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:06:33,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281239939] [2022-03-21 00:06:33,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:06:33,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:06:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:33,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:06:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:33,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:06:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:33,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:06:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:33,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:06:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:33,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:33,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-21 00:06:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:33,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-21 00:06:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:33,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:06:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:06:33,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:06:33,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281239939] [2022-03-21 00:06:33,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281239939] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:33,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:06:33,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:06:33,695 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:06:33,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1396996459] [2022-03-21 00:06:33,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1396996459] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:33,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:06:33,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:06:33,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006299983] [2022-03-21 00:06:33,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:06:33,696 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-21 00:06:33,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:33,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-21 00:06:33,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:06:33,697 INFO L87 Difference]: Start difference. First operand 8242 states and 12413 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:06:42,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:06:48,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:06:48,465 INFO L93 Difference]: Finished difference Result 16692 states and 25780 transitions. [2022-03-21 00:06:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-21 00:06:48,465 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2022-03-21 00:06:48,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:06:48,497 INFO L225 Difference]: With dead ends: 16692 [2022-03-21 00:06:48,497 INFO L226 Difference]: Without dead ends: 9642 [2022-03-21 00:06:48,521 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-03-21 00:06:48,522 INFO L913 BasicCegarLoop]: 683 mSDtfsCounter, 1957 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 4443 mSolverCounterSat, 881 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 5325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 881 IncrementalHoareTripleChecker+Valid, 4443 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-03-21 00:06:48,522 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1992 Valid, 1612 Invalid, 5325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [881 Valid, 4443 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2022-03-21 00:06:48,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9642 states. [2022-03-21 00:06:50,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9642 to 8322. [2022-03-21 00:06:50,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8322 states, 6593 states have (on average 1.4307598968603064) internal successors, (9433), 6794 states have internal predecessors, (9433), 1073 states have call successors, (1073), 517 states have call predecessors, (1073), 655 states have return successors, (2032), 1045 states have call predecessors, (2032), 1059 states have call successors, (2032) [2022-03-21 00:06:50,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8322 states to 8322 states and 12538 transitions. [2022-03-21 00:06:50,810 INFO L78 Accepts]: Start accepts. Automaton has 8322 states and 12538 transitions. Word has length 73 [2022-03-21 00:06:50,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:06:50,811 INFO L478 AbstractCegarLoop]: Abstraction has 8322 states and 12538 transitions. [2022-03-21 00:06:50,811 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:06:50,811 INFO L276 IsEmpty]: Start isEmpty. Operand 8322 states and 12538 transitions. [2022-03-21 00:06:50,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-21 00:06:50,812 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:06:50,813 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:06:50,813 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-21 00:06:50,813 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:06:50,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:06:50,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1359799553, now seen corresponding path program 1 times [2022-03-21 00:06:50,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:50,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2026303623] [2022-03-21 00:06:50,814 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:06:50,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1359799553, now seen corresponding path program 2 times [2022-03-21 00:06:50,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:06:50,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56569666] [2022-03-21 00:06:50,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:06:50,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:06:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:51,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:06:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:51,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:06:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:51,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:06:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:51,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:06:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:51,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:06:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:51,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-21 00:06:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:51,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-21 00:06:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:51,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-21 00:06:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:06:51,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:06:51,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:06:51,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56569666] [2022-03-21 00:06:51,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56569666] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:51,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:06:51,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-21 00:06:51,492 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:06:51,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2026303623] [2022-03-21 00:06:51,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2026303623] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:06:51,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:06:51,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-21 00:06:51,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080847451] [2022-03-21 00:06:51,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:06:51,492 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-21 00:06:51,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:06:51,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-21 00:06:51,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-21 00:06:51,493 INFO L87 Difference]: Start difference. First operand 8322 states and 12538 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:06:56,598 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:06:58,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:03,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:09,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:09,199 INFO L93 Difference]: Finished difference Result 17616 states and 27205 transitions. [2022-03-21 00:07:09,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-21 00:07:09,199 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-03-21 00:07:09,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:09,223 INFO L225 Difference]: With dead ends: 17616 [2022-03-21 00:07:09,224 INFO L226 Difference]: Without dead ends: 9548 [2022-03-21 00:07:09,248 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=222, Invalid=590, Unknown=0, NotChecked=0, Total=812 [2022-03-21 00:07:09,249 INFO L913 BasicCegarLoop]: 658 mSDtfsCounter, 2584 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 3253 mSolverCounterSat, 1081 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2634 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 4337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1081 IncrementalHoareTripleChecker+Valid, 3253 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:09,249 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2634 Valid, 1377 Invalid, 4337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1081 Valid, 3253 Invalid, 3 Unknown, 0 Unchecked, 13.2s Time] [2022-03-21 00:07:09,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9548 states. [2022-03-21 00:07:11,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9548 to 8341. [2022-03-21 00:07:11,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8341 states, 6612 states have (on average 1.4310344827586208) internal successors, (9462), 6813 states have internal predecessors, (9462), 1073 states have call successors, (1073), 517 states have call predecessors, (1073), 655 states have return successors, (2032), 1045 states have call predecessors, (2032), 1059 states have call successors, (2032) [2022-03-21 00:07:11,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8341 states to 8341 states and 12567 transitions. [2022-03-21 00:07:11,920 INFO L78 Accepts]: Start accepts. Automaton has 8341 states and 12567 transitions. Word has length 74 [2022-03-21 00:07:11,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:11,920 INFO L478 AbstractCegarLoop]: Abstraction has 8341 states and 12567 transitions. [2022-03-21 00:07:11,920 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:07:11,920 INFO L276 IsEmpty]: Start isEmpty. Operand 8341 states and 12567 transitions. [2022-03-21 00:07:11,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-21 00:07:11,921 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:11,922 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:07:11,922 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-21 00:07:11,922 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:11,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:11,922 INFO L85 PathProgramCache]: Analyzing trace with hash 941023037, now seen corresponding path program 1 times [2022-03-21 00:07:11,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:11,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [78387457] [2022-03-21 00:07:11,923 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:07:11,923 INFO L85 PathProgramCache]: Analyzing trace with hash 941023037, now seen corresponding path program 2 times [2022-03-21 00:07:11,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:11,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901793900] [2022-03-21 00:07:11,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:11,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:12,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:07:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:07:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:12,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:12,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:12,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-21 00:07:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:12,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-21 00:07:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:12,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-21 00:07:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:07:12,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:12,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901793900] [2022-03-21 00:07:12,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901793900] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:12,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:12,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-21 00:07:12,584 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:12,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [78387457] [2022-03-21 00:07:12,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [78387457] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:12,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:12,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-21 00:07:12,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574709940] [2022-03-21 00:07:12,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:12,584 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-21 00:07:12,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:12,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-21 00:07:12,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:07:12,585 INFO L87 Difference]: Start difference. First operand 8341 states and 12567 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-21 00:07:18,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:20,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:25,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:31,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:31,091 INFO L93 Difference]: Finished difference Result 13651 states and 20845 transitions. [2022-03-21 00:07:31,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-21 00:07:31,092 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-03-21 00:07:31,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:31,113 INFO L225 Difference]: With dead ends: 13651 [2022-03-21 00:07:31,114 INFO L226 Difference]: Without dead ends: 9322 [2022-03-21 00:07:31,126 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=374, Invalid=1432, Unknown=0, NotChecked=0, Total=1806 [2022-03-21 00:07:31,126 INFO L913 BasicCegarLoop]: 671 mSDtfsCounter, 3569 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 4380 mSolverCounterSat, 1535 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3600 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 5918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1535 IncrementalHoareTripleChecker+Valid, 4380 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:31,126 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3600 Valid, 1516 Invalid, 5918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1535 Valid, 4380 Invalid, 3 Unknown, 0 Unchecked, 13.5s Time] [2022-03-21 00:07:31,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9322 states. [2022-03-21 00:07:33,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9322 to 7543. [2022-03-21 00:07:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7543 states, 5980 states have (on average 1.4295986622073578) internal successors, (8549), 6169 states have internal predecessors, (8549), 970 states have call successors, (970), 471 states have call predecessors, (970), 592 states have return successors, (1659), 937 states have call predecessors, (1659), 956 states have call successors, (1659) [2022-03-21 00:07:33,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7543 states to 7543 states and 11178 transitions. [2022-03-21 00:07:33,267 INFO L78 Accepts]: Start accepts. Automaton has 7543 states and 11178 transitions. Word has length 74 [2022-03-21 00:07:33,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:33,267 INFO L478 AbstractCegarLoop]: Abstraction has 7543 states and 11178 transitions. [2022-03-21 00:07:33,267 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-21 00:07:33,267 INFO L276 IsEmpty]: Start isEmpty. Operand 7543 states and 11178 transitions. [2022-03-21 00:07:33,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-21 00:07:33,269 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:33,269 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:07:33,269 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-21 00:07:33,269 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:33,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:33,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1087715839, now seen corresponding path program 1 times [2022-03-21 00:07:33,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:33,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [697281083] [2022-03-21 00:07:33,270 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:07:33,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1087715839, now seen corresponding path program 2 times [2022-03-21 00:07:33,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:33,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312536199] [2022-03-21 00:07:33,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:33,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:33,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:33,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:07:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:33,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:07:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:33,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:33,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:33,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-21 00:07:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:33,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-21 00:07:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:33,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-21 00:07:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:07:33,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:33,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312536199] [2022-03-21 00:07:33,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312536199] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:33,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:33,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:07:33,768 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:33,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [697281083] [2022-03-21 00:07:33,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [697281083] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:33,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:33,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:07:33,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681374449] [2022-03-21 00:07:33,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:33,769 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-21 00:07:33,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:33,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-21 00:07:33,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:07:33,769 INFO L87 Difference]: Start difference. First operand 7543 states and 11178 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:07:40,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:45,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:47,926 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:56,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:56,699 INFO L93 Difference]: Finished difference Result 11702 states and 17816 transitions. [2022-03-21 00:07:56,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-21 00:07:56,700 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 74 [2022-03-21 00:07:56,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:56,731 INFO L225 Difference]: With dead ends: 11702 [2022-03-21 00:07:56,731 INFO L226 Difference]: Without dead ends: 11689 [2022-03-21 00:07:56,735 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=231, Invalid=639, Unknown=0, NotChecked=0, Total=870 [2022-03-21 00:07:56,736 INFO L913 BasicCegarLoop]: 1150 mSDtfsCounter, 2431 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 5161 mSolverCounterSat, 1135 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2478 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 6299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1135 IncrementalHoareTripleChecker+Valid, 5161 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:56,736 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2478 Valid, 2106 Invalid, 6299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1135 Valid, 5161 Invalid, 3 Unknown, 0 Unchecked, 17.2s Time] [2022-03-21 00:07:56,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11689 states. [2022-03-21 00:07:59,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11689 to 8174. [2022-03-21 00:07:59,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8174 states, 6492 states have (on average 1.4322242760320394) internal successors, (9298), 6682 states have internal predecessors, (9298), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 642 states have return successors, (1773), 1015 states have call predecessors, (1773), 1025 states have call successors, (1773) [2022-03-21 00:07:59,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8174 states to 8174 states and 12110 transitions. [2022-03-21 00:07:59,297 INFO L78 Accepts]: Start accepts. Automaton has 8174 states and 12110 transitions. Word has length 74 [2022-03-21 00:07:59,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:59,297 INFO L478 AbstractCegarLoop]: Abstraction has 8174 states and 12110 transitions. [2022-03-21 00:07:59,297 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:07:59,297 INFO L276 IsEmpty]: Start isEmpty. Operand 8174 states and 12110 transitions. [2022-03-21 00:07:59,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-21 00:07:59,298 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:59,299 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:07:59,299 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-21 00:07:59,299 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:59,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:59,299 INFO L85 PathProgramCache]: Analyzing trace with hash -189949733, now seen corresponding path program 1 times [2022-03-21 00:07:59,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:59,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1747436632] [2022-03-21 00:07:59,300 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:07:59,300 INFO L85 PathProgramCache]: Analyzing trace with hash -189949733, now seen corresponding path program 2 times [2022-03-21 00:07:59,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:59,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106276094] [2022-03-21 00:07:59,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:59,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:59,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:59,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:07:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:59,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:07:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:59,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:59,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:59,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-21 00:07:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:59,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-21 00:07:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:59,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-21 00:07:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:07:59,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:59,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106276094] [2022-03-21 00:07:59,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106276094] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:59,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:59,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:07:59,957 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:59,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1747436632] [2022-03-21 00:07:59,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1747436632] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:59,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:59,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:07:59,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571942964] [2022-03-21 00:07:59,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:59,957 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-21 00:07:59,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:59,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-21 00:07:59,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:07:59,958 INFO L87 Difference]: Start difference. First operand 8174 states and 12110 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:08:08,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:13,366 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:15,472 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:24,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:24,148 INFO L93 Difference]: Finished difference Result 10307 states and 15642 transitions. [2022-03-21 00:08:24,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-21 00:08:24,149 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-03-21 00:08:24,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:24,176 INFO L225 Difference]: With dead ends: 10307 [2022-03-21 00:08:24,177 INFO L226 Difference]: Without dead ends: 10303 [2022-03-21 00:08:24,181 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=542, Invalid=1810, Unknown=0, NotChecked=0, Total=2352 [2022-03-21 00:08:24,182 INFO L913 BasicCegarLoop]: 1093 mSDtfsCounter, 4678 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 4876 mSolverCounterSat, 2285 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4719 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 7164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2285 IncrementalHoareTripleChecker+Valid, 4876 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:24,182 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4719 Valid, 2090 Invalid, 7164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2285 Valid, 4876 Invalid, 3 Unknown, 0 Unchecked, 16.7s Time] [2022-03-21 00:08:24,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10303 states. [2022-03-21 00:08:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10303 to 8176. [2022-03-21 00:08:26,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8176 states, 6494 states have (on average 1.4320911610717586) internal successors, (9300), 6684 states have internal predecessors, (9300), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 642 states have return successors, (1773), 1015 states have call predecessors, (1773), 1025 states have call successors, (1773) [2022-03-21 00:08:26,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8176 states to 8176 states and 12112 transitions. [2022-03-21 00:08:26,877 INFO L78 Accepts]: Start accepts. Automaton has 8176 states and 12112 transitions. Word has length 75 [2022-03-21 00:08:26,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:26,877 INFO L478 AbstractCegarLoop]: Abstraction has 8176 states and 12112 transitions. [2022-03-21 00:08:26,877 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:08:26,878 INFO L276 IsEmpty]: Start isEmpty. Operand 8176 states and 12112 transitions. [2022-03-21 00:08:26,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-21 00:08:26,879 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:26,879 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:08:26,879 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-21 00:08:26,879 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:26,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:26,880 INFO L85 PathProgramCache]: Analyzing trace with hash -189672903, now seen corresponding path program 1 times [2022-03-21 00:08:26,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:26,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [824573725] [2022-03-21 00:08:26,880 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-21 00:08:26,880 INFO L85 PathProgramCache]: Analyzing trace with hash -189672903, now seen corresponding path program 2 times [2022-03-21 00:08:26,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:26,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374097485] [2022-03-21 00:08:26,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:26,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:27,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:27,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:08:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:27,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:08:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:27,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:08:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:27,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:27,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-21 00:08:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:27,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-21 00:08:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:27,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-21 00:08:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:08:27,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:27,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374097485] [2022-03-21 00:08:27,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374097485] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:27,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:27,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-21 00:08:27,791 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:27,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [824573725] [2022-03-21 00:08:27,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [824573725] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:27,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:27,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-21 00:08:27,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249583753] [2022-03-21 00:08:27,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:27,791 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-21 00:08:27,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:27,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-21 00:08:27,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-21 00:08:27,792 INFO L87 Difference]: Start difference. First operand 8176 states and 12112 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:08:36,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:43,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:43,948 INFO L93 Difference]: Finished difference Result 17337 states and 26207 transitions. [2022-03-21 00:08:43,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-21 00:08:43,949 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-03-21 00:08:43,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:43,979 INFO L225 Difference]: With dead ends: 17337 [2022-03-21 00:08:43,980 INFO L226 Difference]: Without dead ends: 9126 [2022-03-21 00:08:44,004 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2022-03-21 00:08:44,005 INFO L913 BasicCegarLoop]: 704 mSDtfsCounter, 1749 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 750 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1785 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 4594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:44,005 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1785 Valid, 1609 Invalid, 4594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [750 Valid, 3843 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2022-03-21 00:08:44,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9126 states. [2022-03-21 00:08:46,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9126 to 8199. [2022-03-21 00:08:46,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8199 states, 6517 states have (on average 1.4305662114469848) internal successors, (9323), 6707 states have internal predecessors, (9323), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 642 states have return successors, (1773), 1015 states have call predecessors, (1773), 1025 states have call successors, (1773) [2022-03-21 00:08:46,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8199 states to 8199 states and 12135 transitions. [2022-03-21 00:08:46,864 INFO L78 Accepts]: Start accepts. Automaton has 8199 states and 12135 transitions. Word has length 75 [2022-03-21 00:08:46,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:46,864 INFO L478 AbstractCegarLoop]: Abstraction has 8199 states and 12135 transitions. [2022-03-21 00:08:46,864 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:08:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 8199 states and 12135 transitions. [2022-03-21 00:08:46,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-21 00:08:46,866 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:46,866 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:08:46,866 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-21 00:08:46,866 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:46,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:46,866 INFO L85 PathProgramCache]: Analyzing trace with hash -593466891, now seen corresponding path program 1 times [2022-03-21 00:08:46,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:46,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [145618006] [2022-03-21 00:08:46,875 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:46,875 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:46,875 INFO L85 PathProgramCache]: Analyzing trace with hash -593466891, now seen corresponding path program 2 times [2022-03-21 00:08:46,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:46,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84211141] [2022-03-21 00:08:46,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:46,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:47,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:47,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:08:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:47,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:08:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:47,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:08:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:47,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:47,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:08:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:47,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-21 00:08:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:47,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-21 00:08:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:08:47,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:47,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84211141] [2022-03-21 00:08:47,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84211141] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:08:47,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17651544] [2022-03-21 00:08:47,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:08:47,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:08:47,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:08:47,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:08:47,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-21 00:08:48,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:08:48,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:08:48,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:08:48,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:08:49,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:08:49,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:08:49,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17651544] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:49,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:08:49,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2022-03-21 00:08:49,298 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:49,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [145618006] [2022-03-21 00:08:49,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [145618006] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:49,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:49,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:08:49,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562487524] [2022-03-21 00:08:49,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:49,299 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-21 00:08:49,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:49,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-21 00:08:49,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-03-21 00:08:49,300 INFO L87 Difference]: Start difference. First operand 8199 states and 12135 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:08:52,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:52,759 INFO L93 Difference]: Finished difference Result 8282 states and 12305 transitions. [2022-03-21 00:08:52,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-21 00:08:52,760 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 76 [2022-03-21 00:08:52,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:52,782 INFO L225 Difference]: With dead ends: 8282 [2022-03-21 00:08:52,782 INFO L226 Difference]: Without dead ends: 8268 [2022-03-21 00:08:52,786 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-21 00:08:52,787 INFO L913 BasicCegarLoop]: 865 mSDtfsCounter, 6 mSDsluCounter, 5904 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6769 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:52,787 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 6769 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-21 00:08:52,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8268 states. [2022-03-21 00:08:55,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8268 to 8211. [2022-03-21 00:08:55,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8211 states, 6527 states have (on average 1.4303661712884939) internal successors, (9336), 6718 states have internal predecessors, (9336), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 644 states have return successors, (1801), 1016 states have call predecessors, (1801), 1025 states have call successors, (1801) [2022-03-21 00:08:55,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8211 states to 8211 states and 12176 transitions. [2022-03-21 00:08:55,748 INFO L78 Accepts]: Start accepts. Automaton has 8211 states and 12176 transitions. Word has length 76 [2022-03-21 00:08:55,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:55,748 INFO L478 AbstractCegarLoop]: Abstraction has 8211 states and 12176 transitions. [2022-03-21 00:08:55,749 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:08:55,749 INFO L276 IsEmpty]: Start isEmpty. Operand 8211 states and 12176 transitions. [2022-03-21 00:08:55,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-21 00:08:55,750 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:55,750 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:08:55,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-21 00:08:55,975 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,SelfDestructingSolverStorable24 [2022-03-21 00:08:55,976 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:55,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:55,976 INFO L85 PathProgramCache]: Analyzing trace with hash 875567987, now seen corresponding path program 1 times [2022-03-21 00:08:55,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:55,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2132325950] [2022-03-21 00:08:55,978 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:55,978 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:55,978 INFO L85 PathProgramCache]: Analyzing trace with hash 875567987, now seen corresponding path program 2 times [2022-03-21 00:08:55,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:55,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045632957] [2022-03-21 00:08:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:55,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:56,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:56,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:08:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:08:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:56,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:08:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:56,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:08:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:56,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:08:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:56,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-21 00:08:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:56,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-21 00:08:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:08:56,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:56,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045632957] [2022-03-21 00:08:56,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045632957] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:08:56,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740712036] [2022-03-21 00:08:56,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:08:56,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:08:56,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:08:56,881 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:08:56,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-21 00:08:57,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:08:57,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:08:57,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 2925 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-21 00:08:57,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:08:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:08:58,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:08:58,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740712036] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:58,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:08:58,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2022-03-21 00:08:58,430 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:58,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2132325950] [2022-03-21 00:08:58,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2132325950] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:58,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:58,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:08:58,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410039685] [2022-03-21 00:08:58,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:58,431 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-21 00:08:58,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:58,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-21 00:08:58,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-03-21 00:08:58,432 INFO L87 Difference]: Start difference. First operand 8211 states and 12176 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:09:01,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:09:01,643 INFO L93 Difference]: Finished difference Result 8234 states and 12200 transitions. [2022-03-21 00:09:01,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-21 00:09:01,643 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 76 [2022-03-21 00:09:01,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:09:01,661 INFO L225 Difference]: With dead ends: 8234 [2022-03-21 00:09:01,662 INFO L226 Difference]: Without dead ends: 8210 [2022-03-21 00:09:01,664 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-21 00:09:01,665 INFO L913 BasicCegarLoop]: 865 mSDtfsCounter, 4 mSDsluCounter, 5964 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6829 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:09:01,665 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 6829 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:09:01,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8210 states. [2022-03-21 00:09:04,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8210 to 8210. [2022-03-21 00:09:04,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8210 states, 6526 states have (on average 1.4302788844621515) internal successors, (9334), 6717 states have internal predecessors, (9334), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 644 states have return successors, (1801), 1016 states have call predecessors, (1801), 1025 states have call successors, (1801) [2022-03-21 00:09:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8210 states to 8210 states and 12174 transitions. [2022-03-21 00:09:04,535 INFO L78 Accepts]: Start accepts. Automaton has 8210 states and 12174 transitions. Word has length 76 [2022-03-21 00:09:04,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:09:04,535 INFO L478 AbstractCegarLoop]: Abstraction has 8210 states and 12174 transitions. [2022-03-21 00:09:04,535 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:09:04,535 INFO L276 IsEmpty]: Start isEmpty. Operand 8210 states and 12174 transitions. [2022-03-21 00:09:04,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-21 00:09:04,537 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:09:04,537 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:09:04,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-21 00:09:04,751 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,SelfDestructingSolverStorable25 [2022-03-21 00:09:04,752 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:09:04,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:09:04,752 INFO L85 PathProgramCache]: Analyzing trace with hash 125795560, now seen corresponding path program 1 times [2022-03-21 00:09:04,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:04,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1656669035] [2022-03-21 00:09:04,753 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:09:04,753 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:09:04,753 INFO L85 PathProgramCache]: Analyzing trace with hash 125795560, now seen corresponding path program 2 times [2022-03-21 00:09:04,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:09:04,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892140873] [2022-03-21 00:09:04,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:09:04,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:09:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:05,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:09:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:05,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:09:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:05,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:09:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:05,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:09:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:05,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:09:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:05,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:09:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:05,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-21 00:09:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:05,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-21 00:09:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:09:05,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:09:05,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892140873] [2022-03-21 00:09:05,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892140873] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:09:05,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829839164] [2022-03-21 00:09:05,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:09:05,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:09:05,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:09:05,704 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:09:05,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-21 00:09:06,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:09:06,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:09:06,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-21 00:09:06,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:09:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:09:06,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:09:06,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829839164] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:06,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:09:06,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2022-03-21 00:09:06,972 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:09:06,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1656669035] [2022-03-21 00:09:06,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1656669035] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:06,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:06,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:09:06,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754057576] [2022-03-21 00:09:06,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:09:06,973 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-21 00:09:06,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:06,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-21 00:09:06,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-03-21 00:09:06,974 INFO L87 Difference]: Start difference. First operand 8210 states and 12174 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:09:10,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:09:10,380 INFO L93 Difference]: Finished difference Result 15274 states and 22630 transitions. [2022-03-21 00:09:10,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-21 00:09:10,380 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2022-03-21 00:09:10,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:09:10,407 INFO L225 Difference]: With dead ends: 15274 [2022-03-21 00:09:10,407 INFO L226 Difference]: Without dead ends: 8261 [2022-03-21 00:09:10,424 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-21 00:09:10,425 INFO L913 BasicCegarLoop]: 884 mSDtfsCounter, 10 mSDsluCounter, 5160 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 6044 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-21 00:09:10,425 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 6044 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-21 00:09:10,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8261 states. [2022-03-21 00:09:13,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8261 to 8210. [2022-03-21 00:09:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8210 states, 6526 states have (on average 1.4298191847992645) internal successors, (9331), 6717 states have internal predecessors, (9331), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 644 states have return successors, (1801), 1016 states have call predecessors, (1801), 1025 states have call successors, (1801) [2022-03-21 00:09:13,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8210 states to 8210 states and 12171 transitions. [2022-03-21 00:09:13,241 INFO L78 Accepts]: Start accepts. Automaton has 8210 states and 12171 transitions. Word has length 77 [2022-03-21 00:09:13,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:09:13,241 INFO L478 AbstractCegarLoop]: Abstraction has 8210 states and 12171 transitions. [2022-03-21 00:09:13,241 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:09:13,241 INFO L276 IsEmpty]: Start isEmpty. Operand 8210 states and 12171 transitions. [2022-03-21 00:09:13,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-21 00:09:13,243 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:09:13,243 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:09:13,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-21 00:09:13,443 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:09:13,444 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:09:13,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:09:13,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1712379176, now seen corresponding path program 1 times [2022-03-21 00:09:13,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:13,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1641924533] [2022-03-21 00:09:13,445 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:09:13,445 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:09:13,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1712379176, now seen corresponding path program 2 times [2022-03-21 00:09:13,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:09:13,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171660622] [2022-03-21 00:09:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:09:13,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:09:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:13,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:09:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:13,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:09:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:14,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:09:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:14,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:09:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:14,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:09:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:14,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:09:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:14,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-21 00:09:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:14,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-21 00:09:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:09:14,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:09:14,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171660622] [2022-03-21 00:09:14,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171660622] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:09:14,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068540241] [2022-03-21 00:09:14,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:09:14,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:09:14,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:09:14,376 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:09:14,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-21 00:09:15,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:09:15,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:09:15,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-21 00:09:15,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:09:15,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:09:15,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:09:15,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068540241] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:15,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:09:15,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2022-03-21 00:09:15,855 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:09:15,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1641924533] [2022-03-21 00:09:15,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1641924533] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:15,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:15,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:09:15,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958321446] [2022-03-21 00:09:15,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:09:15,856 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-21 00:09:15,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:15,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-21 00:09:15,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-03-21 00:09:15,857 INFO L87 Difference]: Start difference. First operand 8210 states and 12171 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:09:19,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:09:19,015 INFO L93 Difference]: Finished difference Result 8283 states and 12317 transitions. [2022-03-21 00:09:19,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-21 00:09:19,016 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2022-03-21 00:09:19,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:09:19,031 INFO L225 Difference]: With dead ends: 8283 [2022-03-21 00:09:19,031 INFO L226 Difference]: Without dead ends: 8269 [2022-03-21 00:09:19,033 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-21 00:09:19,033 INFO L913 BasicCegarLoop]: 885 mSDtfsCounter, 10 mSDsluCounter, 5160 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 6045 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:09:19,033 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 6045 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:09:19,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8269 states. [2022-03-21 00:09:21,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8269 to 8200. [2022-03-21 00:09:21,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8200 states, 6517 states have (on average 1.4299524321006598) internal successors, (9319), 6708 states have internal predecessors, (9319), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 643 states have return successors, (1789), 1015 states have call predecessors, (1789), 1025 states have call successors, (1789) [2022-03-21 00:09:21,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8200 states to 8200 states and 12147 transitions. [2022-03-21 00:09:21,756 INFO L78 Accepts]: Start accepts. Automaton has 8200 states and 12147 transitions. Word has length 77 [2022-03-21 00:09:21,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:09:21,756 INFO L478 AbstractCegarLoop]: Abstraction has 8200 states and 12147 transitions. [2022-03-21 00:09:21,756 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:09:21,756 INFO L276 IsEmpty]: Start isEmpty. Operand 8200 states and 12147 transitions. [2022-03-21 00:09:21,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-21 00:09:21,757 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:09:21,758 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:09:21,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-21 00:09:21,958 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,SelfDestructingSolverStorable27 [2022-03-21 00:09:21,958 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:09:21,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:09:21,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1944721517, now seen corresponding path program 1 times [2022-03-21 00:09:21,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:21,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [284385897] [2022-03-21 00:09:21,959 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:09:21,960 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:09:21,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1944721517, now seen corresponding path program 2 times [2022-03-21 00:09:21,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:09:21,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294430274] [2022-03-21 00:09:21,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:09:21,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:09:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:22,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:09:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:22,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:09:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:22,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:09:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:22,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:09:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:22,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:09:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:22,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:09:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:22,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-21 00:09:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:22,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-21 00:09:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:22,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-21 00:09:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:22,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:09:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:09:22,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:09:22,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294430274] [2022-03-21 00:09:22,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294430274] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:22,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:22,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:09:22,523 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:09:22,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [284385897] [2022-03-21 00:09:22,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [284385897] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:22,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:22,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:09:22,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868148513] [2022-03-21 00:09:22,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:09:22,524 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-21 00:09:22,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:22,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-21 00:09:22,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:09:22,524 INFO L87 Difference]: Start difference. First operand 8200 states and 12147 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-21 00:09:32,242 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:09:44,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:09:44,959 INFO L93 Difference]: Finished difference Result 12922 states and 19387 transitions. [2022-03-21 00:09:44,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-21 00:09:44,960 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 79 [2022-03-21 00:09:44,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:09:44,985 INFO L225 Difference]: With dead ends: 12922 [2022-03-21 00:09:44,985 INFO L226 Difference]: Without dead ends: 8997 [2022-03-21 00:09:44,998 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2022-03-21 00:09:44,999 INFO L913 BasicCegarLoop]: 1156 mSDtfsCounter, 1763 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 5439 mSolverCounterSat, 692 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 6132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 692 IncrementalHoareTripleChecker+Valid, 5439 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-03-21 00:09:44,999 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1814 Valid, 1933 Invalid, 6132 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [692 Valid, 5439 Invalid, 1 Unknown, 0 Unchecked, 16.9s Time] [2022-03-21 00:09:45,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8997 states. [2022-03-21 00:09:47,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8997 to 7551. [2022-03-21 00:09:47,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7551 states, 5990 states have (on average 1.426711185308848) internal successors, (8546), 6176 states have internal predecessors, (8546), 966 states have call successors, (966), 471 states have call predecessors, (966), 594 states have return successors, (1566), 935 states have call predecessors, (1566), 944 states have call successors, (1566) [2022-03-21 00:09:47,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7551 states to 7551 states and 11078 transitions. [2022-03-21 00:09:47,794 INFO L78 Accepts]: Start accepts. Automaton has 7551 states and 11078 transitions. Word has length 79 [2022-03-21 00:09:47,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:09:47,795 INFO L478 AbstractCegarLoop]: Abstraction has 7551 states and 11078 transitions. [2022-03-21 00:09:47,795 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-21 00:09:47,795 INFO L276 IsEmpty]: Start isEmpty. Operand 7551 states and 11078 transitions. [2022-03-21 00:09:47,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-21 00:09:47,797 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:09:47,797 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:09:47,797 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-21 00:09:47,797 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:09:47,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:09:47,797 INFO L85 PathProgramCache]: Analyzing trace with hash 215028203, now seen corresponding path program 1 times [2022-03-21 00:09:47,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:47,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2091443655] [2022-03-21 00:09:47,799 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:09:47,799 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:09:47,799 INFO L85 PathProgramCache]: Analyzing trace with hash 215028203, now seen corresponding path program 2 times [2022-03-21 00:09:47,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:09:47,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051184814] [2022-03-21 00:09:47,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:09:47,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:09:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:48,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:09:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:48,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:09:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:48,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:09:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:48,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:09:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:48,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:09:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:48,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:09:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:48,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-21 00:09:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:48,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-21 00:09:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:48,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:09:48,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:09:48,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051184814] [2022-03-21 00:09:48,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051184814] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:09:48,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903430711] [2022-03-21 00:09:48,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:09:48,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:09:48,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:09:48,617 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:09:48,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-21 00:09:49,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:09:49,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:09:49,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 2926 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-21 00:09:49,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:09:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:09:50,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:09:50,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903430711] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:50,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:09:50,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2022-03-21 00:09:50,030 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:09:50,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2091443655] [2022-03-21 00:09:50,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2091443655] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:50,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:50,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:09:50,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395036444] [2022-03-21 00:09:50,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:09:50,031 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-21 00:09:50,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:50,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-21 00:09:50,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-03-21 00:09:50,032 INFO L87 Difference]: Start difference. First operand 7551 states and 11078 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:09:52,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:09:52,905 INFO L93 Difference]: Finished difference Result 7574 states and 11102 transitions. [2022-03-21 00:09:52,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-21 00:09:52,906 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2022-03-21 00:09:52,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:09:52,923 INFO L225 Difference]: With dead ends: 7574 [2022-03-21 00:09:52,924 INFO L226 Difference]: Without dead ends: 7550 [2022-03-21 00:09:52,927 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-21 00:09:52,928 INFO L913 BasicCegarLoop]: 859 mSDtfsCounter, 6 mSDsluCounter, 5083 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5942 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:09:52,928 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5942 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-21 00:09:52,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7550 states. [2022-03-21 00:09:55,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7550 to 7550. [2022-03-21 00:09:55,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7550 states, 5989 states have (on average 1.4266154616797462) internal successors, (8544), 6175 states have internal predecessors, (8544), 966 states have call successors, (966), 471 states have call predecessors, (966), 594 states have return successors, (1566), 935 states have call predecessors, (1566), 944 states have call successors, (1566) [2022-03-21 00:09:55,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7550 states to 7550 states and 11076 transitions. [2022-03-21 00:09:55,659 INFO L78 Accepts]: Start accepts. Automaton has 7550 states and 11076 transitions. Word has length 77 [2022-03-21 00:09:55,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:09:55,659 INFO L478 AbstractCegarLoop]: Abstraction has 7550 states and 11076 transitions. [2022-03-21 00:09:55,659 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:09:55,660 INFO L276 IsEmpty]: Start isEmpty. Operand 7550 states and 11076 transitions. [2022-03-21 00:09:55,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-21 00:09:55,661 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:09:55,661 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:09:55,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-21 00:09:55,867 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:09:55,867 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:09:55,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:09:55,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1371555413, now seen corresponding path program 1 times [2022-03-21 00:09:55,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:55,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1050381644] [2022-03-21 00:09:55,868 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:09:55,868 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:09:55,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1371555413, now seen corresponding path program 2 times [2022-03-21 00:09:55,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:09:55,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959040411] [2022-03-21 00:09:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:09:55,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:09:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:56,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:09:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:56,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:09:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:56,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:09:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:56,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:09:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:56,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:09:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:56,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:09:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:56,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-21 00:09:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:56,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-21 00:09:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:09:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:09:56,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:09:56,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959040411] [2022-03-21 00:09:56,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959040411] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:09:56,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765796624] [2022-03-21 00:09:56,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:09:56,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:09:56,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:09:56,588 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:09:56,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-21 00:09:57,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:09:57,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:09:57,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 2925 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-21 00:09:57,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:09:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:09:58,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:09:58,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765796624] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:58,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:09:58,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2022-03-21 00:09:58,015 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:09:58,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1050381644] [2022-03-21 00:09:58,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1050381644] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:09:58,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:09:58,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:09:58,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378031533] [2022-03-21 00:09:58,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:09:58,015 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-21 00:09:58,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:09:58,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-21 00:09:58,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-03-21 00:09:58,016 INFO L87 Difference]: Start difference. First operand 7550 states and 11076 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:10:00,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:10:00,898 INFO L93 Difference]: Finished difference Result 7563 states and 11090 transitions. [2022-03-21 00:10:00,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-21 00:10:00,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2022-03-21 00:10:00,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:10:00,915 INFO L225 Difference]: With dead ends: 7563 [2022-03-21 00:10:00,915 INFO L226 Difference]: Without dead ends: 7515 [2022-03-21 00:10:00,919 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-21 00:10:00,919 INFO L913 BasicCegarLoop]: 857 mSDtfsCounter, 4 mSDsluCounter, 5904 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6761 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:10:00,919 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 6761 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:10:00,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7515 states. [2022-03-21 00:10:03,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7515 to 7515. [2022-03-21 00:10:03,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7515 states, 5959 states have (on average 1.4272528947810035) internal successors, (8505), 6145 states have internal predecessors, (8505), 963 states have call successors, (963), 469 states have call predecessors, (963), 592 states have return successors, (1562), 932 states have call predecessors, (1562), 941 states have call successors, (1562) [2022-03-21 00:10:03,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7515 states to 7515 states and 11030 transitions. [2022-03-21 00:10:03,607 INFO L78 Accepts]: Start accepts. Automaton has 7515 states and 11030 transitions. Word has length 77 [2022-03-21 00:10:03,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:10:03,607 INFO L478 AbstractCegarLoop]: Abstraction has 7515 states and 11030 transitions. [2022-03-21 00:10:03,607 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:10:03,608 INFO L276 IsEmpty]: Start isEmpty. Operand 7515 states and 11030 transitions. [2022-03-21 00:10:03,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-21 00:10:03,609 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:10:03,609 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:10:03,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-21 00:10:03,821 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:10:03,821 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:10:03,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:10:03,821 INFO L85 PathProgramCache]: Analyzing trace with hash -83508122, now seen corresponding path program 1 times [2022-03-21 00:10:03,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:03,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1452722190] [2022-03-21 00:10:03,822 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:10:03,822 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:10:03,823 INFO L85 PathProgramCache]: Analyzing trace with hash -83508122, now seen corresponding path program 2 times [2022-03-21 00:10:03,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:10:03,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770109284] [2022-03-21 00:10:03,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:10:03,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:10:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:04,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:10:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:04,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:10:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:04,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:10:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:04,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:10:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:04,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:10:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:04,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:10:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:04,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-21 00:10:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:04,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-21 00:10:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:04,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-21 00:10:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:04,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:10:04,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:10:04,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770109284] [2022-03-21 00:10:04,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770109284] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:04,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:04,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-21 00:10:04,400 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:10:04,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1452722190] [2022-03-21 00:10:04,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1452722190] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:04,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:04,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-21 00:10:04,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859140001] [2022-03-21 00:10:04,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:10:04,403 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-21 00:10:04,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:04,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-21 00:10:04,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:10:04,404 INFO L87 Difference]: Start difference. First operand 7515 states and 11030 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-21 00:10:10,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:12,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:18,921 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:25,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:10:25,431 INFO L93 Difference]: Finished difference Result 14706 states and 21963 transitions. [2022-03-21 00:10:25,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-21 00:10:25,431 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 80 [2022-03-21 00:10:25,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:10:25,453 INFO L225 Difference]: With dead ends: 14706 [2022-03-21 00:10:25,454 INFO L226 Difference]: Without dead ends: 8360 [2022-03-21 00:10:25,470 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-03-21 00:10:25,470 INFO L913 BasicCegarLoop]: 664 mSDtfsCounter, 1419 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 3149 mSolverCounterSat, 578 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 3730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 578 IncrementalHoareTripleChecker+Valid, 3149 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:10:25,471 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1452 Valid, 1259 Invalid, 3730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [578 Valid, 3149 Invalid, 3 Unknown, 0 Unchecked, 16.2s Time] [2022-03-21 00:10:25,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8360 states. [2022-03-21 00:10:28,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8360 to 7473. [2022-03-21 00:10:28,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7473 states, 5913 states have (on average 1.4265178420429563) internal successors, (8435), 6117 states have internal predecessors, (8435), 967 states have call successors, (967), 469 states have call predecessors, (967), 592 states have return successors, (1566), 918 states have call predecessors, (1566), 945 states have call successors, (1566) [2022-03-21 00:10:28,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7473 states to 7473 states and 10968 transitions. [2022-03-21 00:10:28,286 INFO L78 Accepts]: Start accepts. Automaton has 7473 states and 10968 transitions. Word has length 80 [2022-03-21 00:10:28,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:10:28,287 INFO L478 AbstractCegarLoop]: Abstraction has 7473 states and 10968 transitions. [2022-03-21 00:10:28,287 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-21 00:10:28,287 INFO L276 IsEmpty]: Start isEmpty. Operand 7473 states and 10968 transitions. [2022-03-21 00:10:28,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-03-21 00:10:28,288 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:10:28,288 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:10:28,288 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-21 00:10:28,288 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:10:28,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:10:28,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1613858666, now seen corresponding path program 1 times [2022-03-21 00:10:28,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:28,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1202094062] [2022-03-21 00:10:28,289 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:10:28,290 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:10:28,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1613858666, now seen corresponding path program 2 times [2022-03-21 00:10:28,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:10:28,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478872927] [2022-03-21 00:10:28,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:10:28,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:10:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:28,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:10:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:28,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:10:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:28,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:10:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:28,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:10:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:28,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:10:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:28,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:10:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:28,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-21 00:10:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:28,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:10:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:10:28,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:10:28,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478872927] [2022-03-21 00:10:28,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478872927] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:28,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:28,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:10:28,792 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:10:28,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1202094062] [2022-03-21 00:10:28,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1202094062] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:28,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:28,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:10:28,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448274744] [2022-03-21 00:10:28,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:10:28,793 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-21 00:10:28,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:28,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-21 00:10:28,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:10:28,794 INFO L87 Difference]: Start difference. First operand 7473 states and 10968 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:10:33,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:35,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:37,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:43,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:10:50,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:10:50,968 INFO L93 Difference]: Finished difference Result 11544 states and 17298 transitions. [2022-03-21 00:10:50,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-21 00:10:50,972 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 81 [2022-03-21 00:10:50,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:10:50,991 INFO L225 Difference]: With dead ends: 11544 [2022-03-21 00:10:50,992 INFO L226 Difference]: Without dead ends: 8574 [2022-03-21 00:10:51,000 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2022-03-21 00:10:51,000 INFO L913 BasicCegarLoop]: 656 mSDtfsCounter, 1738 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 3144 mSolverCounterSat, 803 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 3951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 3144 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:10:51,001 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1769 Valid, 1349 Invalid, 3951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [803 Valid, 3144 Invalid, 4 Unknown, 0 Unchecked, 17.1s Time] [2022-03-21 00:10:51,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8574 states. [2022-03-21 00:10:53,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8574 to 7673. [2022-03-21 00:10:53,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7673 states, 6113 states have (on average 1.4256502535579911) internal successors, (8715), 6317 states have internal predecessors, (8715), 967 states have call successors, (967), 469 states have call predecessors, (967), 592 states have return successors, (1566), 918 states have call predecessors, (1566), 945 states have call successors, (1566) [2022-03-21 00:10:53,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7673 states to 7673 states and 11248 transitions. [2022-03-21 00:10:53,870 INFO L78 Accepts]: Start accepts. Automaton has 7673 states and 11248 transitions. Word has length 81 [2022-03-21 00:10:53,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:10:53,870 INFO L478 AbstractCegarLoop]: Abstraction has 7673 states and 11248 transitions. [2022-03-21 00:10:53,870 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:10:53,871 INFO L276 IsEmpty]: Start isEmpty. Operand 7673 states and 11248 transitions. [2022-03-21 00:10:53,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-21 00:10:53,872 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:10:53,872 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:10:53,872 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-21 00:10:53,872 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:10:53,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:10:53,873 INFO L85 PathProgramCache]: Analyzing trace with hash -804900920, now seen corresponding path program 1 times [2022-03-21 00:10:53,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:53,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [840533137] [2022-03-21 00:10:53,873 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:10:53,874 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:10:53,874 INFO L85 PathProgramCache]: Analyzing trace with hash -804900920, now seen corresponding path program 2 times [2022-03-21 00:10:53,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:10:53,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530232155] [2022-03-21 00:10:53,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:10:53,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:10:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:54,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:10:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:54,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:10:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:54,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:10:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:54,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:10:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:54,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:10:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:54,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:10:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:54,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-21 00:10:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:54,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-21 00:10:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:54,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-21 00:10:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:10:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:10:54,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:10:54,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530232155] [2022-03-21 00:10:54,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530232155] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:54,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:54,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:10:54,383 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:10:54,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [840533137] [2022-03-21 00:10:54,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [840533137] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:10:54,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:10:54,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:10:54,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110125750] [2022-03-21 00:10:54,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:10:54,384 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-21 00:10:54,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:10:54,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-21 00:10:54,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:10:54,385 INFO L87 Difference]: Start difference. First operand 7673 states and 11248 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (14), 9 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-21 00:11:02,563 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:11:14,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:11:14,666 INFO L93 Difference]: Finished difference Result 10563 states and 15547 transitions. [2022-03-21 00:11:14,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-21 00:11:14,667 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (14), 9 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2022-03-21 00:11:14,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:11:14,683 INFO L225 Difference]: With dead ends: 10563 [2022-03-21 00:11:14,683 INFO L226 Difference]: Without dead ends: 6398 [2022-03-21 00:11:14,694 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=271, Invalid=989, Unknown=0, NotChecked=0, Total=1260 [2022-03-21 00:11:14,694 INFO L913 BasicCegarLoop]: 982 mSDtfsCounter, 4257 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 4942 mSolverCounterSat, 1592 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4306 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 6535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1592 IncrementalHoareTripleChecker+Valid, 4942 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-03-21 00:11:14,695 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4306 Valid, 1726 Invalid, 6535 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1592 Valid, 4942 Invalid, 1 Unknown, 0 Unchecked, 15.3s Time] [2022-03-21 00:11:14,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6398 states. [2022-03-21 00:11:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6398 to 5530. [2022-03-21 00:11:17,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5530 states, 4438 states have (on average 1.4175304191077063) internal successors, (6291), 4555 states have internal predecessors, (6291), 672 states have call successors, (672), 347 states have call predecessors, (672), 419 states have return successors, (910), 649 states have call predecessors, (910), 654 states have call successors, (910) [2022-03-21 00:11:17,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5530 states to 5530 states and 7873 transitions. [2022-03-21 00:11:17,148 INFO L78 Accepts]: Start accepts. Automaton has 5530 states and 7873 transitions. Word has length 85 [2022-03-21 00:11:17,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:11:17,148 INFO L478 AbstractCegarLoop]: Abstraction has 5530 states and 7873 transitions. [2022-03-21 00:11:17,148 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (14), 9 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-21 00:11:17,148 INFO L276 IsEmpty]: Start isEmpty. Operand 5530 states and 7873 transitions. [2022-03-21 00:11:17,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-03-21 00:11:17,149 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:11:17,149 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:11:17,150 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-21 00:11:17,150 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:11:17,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:11:17,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1043564809, now seen corresponding path program 1 times [2022-03-21 00:11:17,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:17,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1299574999] [2022-03-21 00:11:17,151 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:11:17,151 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:11:17,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1043564809, now seen corresponding path program 2 times [2022-03-21 00:11:17,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:11:17,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91569583] [2022-03-21 00:11:17,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:11:17,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:11:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:17,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:11:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:17,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:11:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:17,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:11:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:17,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:11:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:17,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:11:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:17,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:11:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:17,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-21 00:11:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:11:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:17,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:11:17,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:11:17,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91569583] [2022-03-21 00:11:17,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91569583] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:17,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:17,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:11:17,627 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:11:17,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1299574999] [2022-03-21 00:11:17,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1299574999] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:17,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:17,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-21 00:11:17,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119989370] [2022-03-21 00:11:17,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:11:17,628 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-21 00:11:17,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:17,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-21 00:11:17,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:11:17,628 INFO L87 Difference]: Start difference. First operand 5530 states and 7873 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:11:25,505 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:11:31,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:11:31,505 INFO L93 Difference]: Finished difference Result 9287 states and 13432 transitions. [2022-03-21 00:11:31,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-21 00:11:31,506 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 82 [2022-03-21 00:11:31,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:11:31,524 INFO L225 Difference]: With dead ends: 9287 [2022-03-21 00:11:31,525 INFO L226 Difference]: Without dead ends: 6386 [2022-03-21 00:11:31,532 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-03-21 00:11:31,533 INFO L913 BasicCegarLoop]: 670 mSDtfsCounter, 1636 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 3009 mSolverCounterSat, 705 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 3715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 705 IncrementalHoareTripleChecker+Valid, 3009 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-03-21 00:11:31,533 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1671 Valid, 1271 Invalid, 3715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [705 Valid, 3009 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-03-21 00:11:31,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6386 states. [2022-03-21 00:11:33,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6386 to 5486. [2022-03-21 00:11:33,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5486 states, 4394 states have (on average 1.4198907601274464) internal successors, (6239), 4511 states have internal predecessors, (6239), 672 states have call successors, (672), 347 states have call predecessors, (672), 419 states have return successors, (910), 649 states have call predecessors, (910), 654 states have call successors, (910) [2022-03-21 00:11:33,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 7821 transitions. [2022-03-21 00:11:33,842 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 7821 transitions. Word has length 82 [2022-03-21 00:11:33,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:11:33,843 INFO L478 AbstractCegarLoop]: Abstraction has 5486 states and 7821 transitions. [2022-03-21 00:11:33,843 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:11:33,843 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 7821 transitions. [2022-03-21 00:11:33,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-03-21 00:11:33,844 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:11:33,844 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:11:33,844 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-21 00:11:33,844 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:11:33,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:11:33,845 INFO L85 PathProgramCache]: Analyzing trace with hash 489872152, now seen corresponding path program 1 times [2022-03-21 00:11:33,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:33,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1699347808] [2022-03-21 00:11:33,845 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:11:33,845 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:11:33,846 INFO L85 PathProgramCache]: Analyzing trace with hash 489872152, now seen corresponding path program 2 times [2022-03-21 00:11:33,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:11:33,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482124933] [2022-03-21 00:11:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:11:33,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:11:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:34,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:11:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:34,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:11:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:11:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:34,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:11:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:34,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:11:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:34,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:11:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:34,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-21 00:11:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:34,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:11:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:11:34,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:11:34,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482124933] [2022-03-21 00:11:34,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482124933] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:11:34,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543952504] [2022-03-21 00:11:34,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:11:34,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:11:34,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:11:34,480 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:11:34,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-21 00:11:35,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:11:35,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:11:35,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 2936 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-21 00:11:35,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:11:35,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-03-21 00:11:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:11:35,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:11:35,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543952504] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:35,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:11:35,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-03-21 00:11:35,785 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:11:35,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1699347808] [2022-03-21 00:11:35,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1699347808] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:35,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:35,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-21 00:11:35,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933987008] [2022-03-21 00:11:35,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:11:35,786 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-21 00:11:35,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:35,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-21 00:11:35,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-21 00:11:35,787 INFO L87 Difference]: Start difference. First operand 5486 states and 7821 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:11:40,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:11:42,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:11:44,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:11:44,411 INFO L93 Difference]: Finished difference Result 5631 states and 7987 transitions. [2022-03-21 00:11:44,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-21 00:11:44,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 82 [2022-03-21 00:11:44,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:11:44,422 INFO L225 Difference]: With dead ends: 5631 [2022-03-21 00:11:44,422 INFO L226 Difference]: Without dead ends: 5492 [2022-03-21 00:11:44,423 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-03-21 00:11:44,424 INFO L913 BasicCegarLoop]: 809 mSDtfsCounter, 4 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2906 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-03-21 00:11:44,424 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2906 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 354 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2022-03-21 00:11:44,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5492 states. [2022-03-21 00:11:46,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5492 to 5488. [2022-03-21 00:11:46,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5488 states, 4396 states have (on average 1.4196997270245677) internal successors, (6241), 4513 states have internal predecessors, (6241), 672 states have call successors, (672), 347 states have call predecessors, (672), 419 states have return successors, (910), 649 states have call predecessors, (910), 654 states have call successors, (910) [2022-03-21 00:11:46,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 7823 transitions. [2022-03-21 00:11:46,663 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 7823 transitions. Word has length 82 [2022-03-21 00:11:46,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:11:46,663 INFO L478 AbstractCegarLoop]: Abstraction has 5488 states and 7823 transitions. [2022-03-21 00:11:46,663 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:11:46,663 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 7823 transitions. [2022-03-21 00:11:46,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-03-21 00:11:46,664 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:11:46,664 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:11:46,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-21 00:11:46,865 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:11:46,865 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:11:46,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:11:46,865 INFO L85 PathProgramCache]: Analyzing trace with hash -211727722, now seen corresponding path program 1 times [2022-03-21 00:11:46,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:46,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1273264672] [2022-03-21 00:11:46,866 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:11:46,866 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:11:46,867 INFO L85 PathProgramCache]: Analyzing trace with hash -211727722, now seen corresponding path program 2 times [2022-03-21 00:11:46,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:11:46,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252220818] [2022-03-21 00:11:46,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:11:46,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:11:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:47,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:11:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:47,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:11:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:47,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:11:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:47,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:11:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:47,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:11:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:47,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:11:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:47,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-21 00:11:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:47,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:11:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:11:47,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:11:47,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252220818] [2022-03-21 00:11:47,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252220818] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:11:47,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815924826] [2022-03-21 00:11:47,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:11:47,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:11:47,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:11:47,539 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:11:47,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-21 00:11:48,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:11:48,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:11:48,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-21 00:11:48,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:11:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:11:48,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:11:48,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815924826] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:48,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:11:48,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2022-03-21 00:11:48,912 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:11:48,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1273264672] [2022-03-21 00:11:48,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1273264672] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:48,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:48,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:11:48,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374627208] [2022-03-21 00:11:48,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:11:48,912 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-21 00:11:48,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:48,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-21 00:11:48,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-03-21 00:11:48,913 INFO L87 Difference]: Start difference. First operand 5488 states and 7823 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:11:51,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:11:51,402 INFO L93 Difference]: Finished difference Result 5551 states and 7913 transitions. [2022-03-21 00:11:51,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-21 00:11:51,403 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 82 [2022-03-21 00:11:51,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:11:51,419 INFO L225 Difference]: With dead ends: 5551 [2022-03-21 00:11:51,419 INFO L226 Difference]: Without dead ends: 5534 [2022-03-21 00:11:51,421 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-03-21 00:11:51,422 INFO L913 BasicCegarLoop]: 823 mSDtfsCounter, 10 mSDsluCounter, 4819 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 5642 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:11:51,422 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 5642 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:11:51,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2022-03-21 00:11:53,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 5494. [2022-03-21 00:11:53,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5494 states, 4401 states have (on average 1.4192229038854807) internal successors, (6246), 4519 states have internal predecessors, (6246), 672 states have call successors, (672), 347 states have call predecessors, (672), 420 states have return successors, (917), 649 states have call predecessors, (917), 654 states have call successors, (917) [2022-03-21 00:11:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5494 states to 5494 states and 7835 transitions. [2022-03-21 00:11:53,678 INFO L78 Accepts]: Start accepts. Automaton has 5494 states and 7835 transitions. Word has length 82 [2022-03-21 00:11:53,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:11:53,679 INFO L478 AbstractCegarLoop]: Abstraction has 5494 states and 7835 transitions. [2022-03-21 00:11:53,679 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:11:53,679 INFO L276 IsEmpty]: Start isEmpty. Operand 5494 states and 7835 transitions. [2022-03-21 00:11:53,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-21 00:11:53,680 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:11:53,680 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:11:53,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-21 00:11:53,881 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-21 00:11:53,881 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:11:53,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:11:53,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1770566097, now seen corresponding path program 1 times [2022-03-21 00:11:53,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:53,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [230730711] [2022-03-21 00:11:53,882 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:11:53,883 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:11:53,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1770566097, now seen corresponding path program 2 times [2022-03-21 00:11:53,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:11:53,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828500362] [2022-03-21 00:11:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:11:53,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:11:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:54,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:11:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:54,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:11:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:54,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:11:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:54,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:11:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:54,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:11:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:54,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:11:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:54,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-21 00:11:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:54,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-21 00:11:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:11:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:11:54,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:11:54,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828500362] [2022-03-21 00:11:54,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828500362] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:54,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:54,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-21 00:11:54,426 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:11:54,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [230730711] [2022-03-21 00:11:54,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [230730711] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:11:54,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:11:54,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-21 00:11:54,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915326377] [2022-03-21 00:11:54,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:11:54,427 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-21 00:11:54,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:11:54,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-21 00:11:54,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-21 00:11:54,428 INFO L87 Difference]: Start difference. First operand 5494 states and 7835 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:12:03,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:12:10,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:12:10,664 INFO L93 Difference]: Finished difference Result 6370 states and 9321 transitions. [2022-03-21 00:12:10,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-21 00:12:10,665 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2022-03-21 00:12:10,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:12:10,679 INFO L225 Difference]: With dead ends: 6370 [2022-03-21 00:12:10,679 INFO L226 Difference]: Without dead ends: 6354 [2022-03-21 00:12:10,682 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2022-03-21 00:12:10,682 INFO L913 BasicCegarLoop]: 671 mSDtfsCounter, 1731 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 4961 mSolverCounterSat, 773 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1768 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 5735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 773 IncrementalHoareTripleChecker+Valid, 4961 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-03-21 00:12:10,682 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1768 Valid, 1856 Invalid, 5735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [773 Valid, 4961 Invalid, 1 Unknown, 0 Unchecked, 11.8s Time] [2022-03-21 00:12:10,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6354 states. [2022-03-21 00:12:13,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6354 to 5499. [2022-03-21 00:12:13,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5499 states, 4404 states have (on average 1.4193914623069936) internal successors, (6251), 4523 states have internal predecessors, (6251), 674 states have call successors, (674), 347 states have call predecessors, (674), 420 states have return successors, (919), 650 states have call predecessors, (919), 656 states have call successors, (919) [2022-03-21 00:12:13,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5499 states to 5499 states and 7844 transitions. [2022-03-21 00:12:13,053 INFO L78 Accepts]: Start accepts. Automaton has 5499 states and 7844 transitions. Word has length 83 [2022-03-21 00:12:13,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:12:13,054 INFO L478 AbstractCegarLoop]: Abstraction has 5499 states and 7844 transitions. [2022-03-21 00:12:13,054 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-21 00:12:13,054 INFO L276 IsEmpty]: Start isEmpty. Operand 5499 states and 7844 transitions. [2022-03-21 00:12:13,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-21 00:12:13,055 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:12:13,055 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:12:13,055 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-21 00:12:13,056 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:12:13,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:12:13,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1200294461, now seen corresponding path program 1 times [2022-03-21 00:12:13,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:13,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [343673608] [2022-03-21 00:12:13,057 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:12:13,057 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:12:13,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1200294461, now seen corresponding path program 2 times [2022-03-21 00:12:13,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:12:13,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870052991] [2022-03-21 00:12:13,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:12:13,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:12:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:13,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:12:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:13,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:12:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:13,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:12:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:13,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:12:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:13,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:12:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:13,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:12:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:13,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-21 00:12:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:13,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:12:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:13,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:12:13,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:12:13,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870052991] [2022-03-21 00:12:13,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870052991] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:12:13,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265746130] [2022-03-21 00:12:13,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:12:13,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:12:13,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:12:13,759 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:12:13,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-21 00:12:14,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:12:14,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:12:14,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-21 00:12:14,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:12:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:12:15,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:12:15,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265746130] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:15,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:12:15,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2022-03-21 00:12:15,211 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:12:15,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [343673608] [2022-03-21 00:12:15,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [343673608] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:15,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:12:15,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:12:15,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336754711] [2022-03-21 00:12:15,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:12:15,212 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-21 00:12:15,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:15,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-21 00:12:15,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-03-21 00:12:15,212 INFO L87 Difference]: Start difference. First operand 5499 states and 7844 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:12:17,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:12:17,694 INFO L93 Difference]: Finished difference Result 5550 states and 7915 transitions. [2022-03-21 00:12:17,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-21 00:12:17,695 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 83 [2022-03-21 00:12:17,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:12:17,706 INFO L225 Difference]: With dead ends: 5550 [2022-03-21 00:12:17,706 INFO L226 Difference]: Without dead ends: 5533 [2022-03-21 00:12:17,707 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-03-21 00:12:17,708 INFO L913 BasicCegarLoop]: 842 mSDtfsCounter, 6 mSDsluCounter, 5723 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6565 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:12:17,708 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 6565 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:12:17,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2022-03-21 00:12:19,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 5499. [2022-03-21 00:12:19,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5499 states, 4404 states have (on average 1.4193914623069936) internal successors, (6251), 4523 states have internal predecessors, (6251), 674 states have call successors, (674), 347 states have call predecessors, (674), 420 states have return successors, (919), 650 states have call predecessors, (919), 656 states have call successors, (919) [2022-03-21 00:12:19,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5499 states to 5499 states and 7844 transitions. [2022-03-21 00:12:19,944 INFO L78 Accepts]: Start accepts. Automaton has 5499 states and 7844 transitions. Word has length 83 [2022-03-21 00:12:19,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:12:19,945 INFO L478 AbstractCegarLoop]: Abstraction has 5499 states and 7844 transitions. [2022-03-21 00:12:19,945 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:12:19,945 INFO L276 IsEmpty]: Start isEmpty. Operand 5499 states and 7844 transitions. [2022-03-21 00:12:19,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-21 00:12:19,946 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:12:19,946 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:12:19,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-21 00:12:20,146 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-21 00:12:20,147 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:12:20,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:12:20,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1508089219, now seen corresponding path program 1 times [2022-03-21 00:12:20,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:20,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1451774543] [2022-03-21 00:12:20,148 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:12:20,148 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:12:20,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1508089219, now seen corresponding path program 2 times [2022-03-21 00:12:20,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:12:20,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265608355] [2022-03-21 00:12:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:12:20,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:12:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:12:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:12:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:12:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:12:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:12:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:12:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-21 00:12:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-21 00:12:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-21 00:12:20,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:12:20,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265608355] [2022-03-21 00:12:20,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265608355] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:12:20,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687628575] [2022-03-21 00:12:20,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:12:20,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:12:20,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:12:20,724 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-21 00:12:20,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-21 00:12:21,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:12:21,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:12:21,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-21 00:12:21,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:12:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:12:22,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:12:22,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687628575] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:22,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:12:22,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2022-03-21 00:12:22,166 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:12:22,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1451774543] [2022-03-21 00:12:22,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1451774543] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:22,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:12:22,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-21 00:12:22,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460746447] [2022-03-21 00:12:22,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:12:22,166 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-21 00:12:22,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:22,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-21 00:12:22,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-03-21 00:12:22,167 INFO L87 Difference]: Start difference. First operand 5499 states and 7844 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:12:24,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:12:24,632 INFO L93 Difference]: Finished difference Result 5555 states and 7920 transitions. [2022-03-21 00:12:24,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-21 00:12:24,633 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 83 [2022-03-21 00:12:24,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:12:24,646 INFO L225 Difference]: With dead ends: 5555 [2022-03-21 00:12:24,646 INFO L226 Difference]: Without dead ends: 5535 [2022-03-21 00:12:24,648 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-03-21 00:12:24,648 INFO L913 BasicCegarLoop]: 843 mSDtfsCounter, 10 mSDsluCounter, 4912 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 5755 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:12:24,648 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 5755 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-21 00:12:24,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5535 states. [2022-03-21 00:12:26,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5535 to 5489. [2022-03-21 00:12:26,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5489 states, 4396 states have (on average 1.4199272065514104) internal successors, (6242), 4514 states have internal predecessors, (6242), 673 states have call successors, (673), 347 states have call predecessors, (673), 419 states have return successors, (911), 649 states have call predecessors, (911), 655 states have call successors, (911) [2022-03-21 00:12:26,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5489 states to 5489 states and 7826 transitions. [2022-03-21 00:12:26,900 INFO L78 Accepts]: Start accepts. Automaton has 5489 states and 7826 transitions. Word has length 83 [2022-03-21 00:12:26,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:12:26,900 INFO L478 AbstractCegarLoop]: Abstraction has 5489 states and 7826 transitions. [2022-03-21 00:12:26,901 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:12:26,901 INFO L276 IsEmpty]: Start isEmpty. Operand 5489 states and 7826 transitions. [2022-03-21 00:12:26,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-21 00:12:26,902 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:12:26,902 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:12:26,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-21 00:12:27,102 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-21 00:12:27,103 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:12:27,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:12:27,103 INFO L85 PathProgramCache]: Analyzing trace with hash 543356261, now seen corresponding path program 1 times [2022-03-21 00:12:27,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:27,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1726923325] [2022-03-21 00:12:27,104 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:12:27,104 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:12:27,104 INFO L85 PathProgramCache]: Analyzing trace with hash 543356261, now seen corresponding path program 2 times [2022-03-21 00:12:27,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:12:27,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354833061] [2022-03-21 00:12:27,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:12:27,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:12:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:27,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:12:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:27,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:12:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:27,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:12:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:27,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:12:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:27,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:12:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:27,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:12:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:27,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-21 00:12:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:27,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:12:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:27,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-21 00:12:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:27,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:12:27,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:12:27,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354833061] [2022-03-21 00:12:27,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354833061] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:27,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:12:27,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-21 00:12:27,666 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:12:27,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1726923325] [2022-03-21 00:12:27,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1726923325] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:27,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:12:27,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-21 00:12:27,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279345644] [2022-03-21 00:12:27,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:12:27,667 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-21 00:12:27,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:27,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-21 00:12:27,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:12:27,668 INFO L87 Difference]: Start difference. First operand 5489 states and 7826 transitions. Second operand has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (11), 11 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-21 00:12:38,896 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:12:46,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:12:46,536 INFO L93 Difference]: Finished difference Result 9354 states and 13623 transitions. [2022-03-21 00:12:46,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-21 00:12:46,536 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (11), 11 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 85 [2022-03-21 00:12:46,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:12:46,554 INFO L225 Difference]: With dead ends: 9354 [2022-03-21 00:12:46,554 INFO L226 Difference]: Without dead ends: 6473 [2022-03-21 00:12:46,561 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=168, Invalid=702, Unknown=0, NotChecked=0, Total=870 [2022-03-21 00:12:46,561 INFO L913 BasicCegarLoop]: 662 mSDtfsCounter, 1548 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 5940 mSolverCounterSat, 663 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 6604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 5940 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-03-21 00:12:46,561 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 1893 Invalid, 6604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 5940 Invalid, 1 Unknown, 0 Unchecked, 14.3s Time] [2022-03-21 00:12:46,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6473 states. [2022-03-21 00:12:48,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6473 to 5547. [2022-03-21 00:12:48,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5547 states, 4454 states have (on average 1.4189492590929502) internal successors, (6320), 4572 states have internal predecessors, (6320), 673 states have call successors, (673), 347 states have call predecessors, (673), 419 states have return successors, (911), 649 states have call predecessors, (911), 655 states have call successors, (911) [2022-03-21 00:12:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5547 states to 5547 states and 7904 transitions. [2022-03-21 00:12:48,901 INFO L78 Accepts]: Start accepts. Automaton has 5547 states and 7904 transitions. Word has length 85 [2022-03-21 00:12:48,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:12:48,901 INFO L478 AbstractCegarLoop]: Abstraction has 5547 states and 7904 transitions. [2022-03-21 00:12:48,901 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (11), 11 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-21 00:12:48,901 INFO L276 IsEmpty]: Start isEmpty. Operand 5547 states and 7904 transitions. [2022-03-21 00:12:48,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-21 00:12:48,902 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:12:48,902 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:12:48,903 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-21 00:12:48,903 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:12:48,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:12:48,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1251703048, now seen corresponding path program 1 times [2022-03-21 00:12:48,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:48,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1891334996] [2022-03-21 00:12:48,904 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:12:48,904 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:12:48,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1251703048, now seen corresponding path program 2 times [2022-03-21 00:12:48,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:12:48,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332201845] [2022-03-21 00:12:48,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:12:48,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:12:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:49,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:12:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:49,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:12:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:49,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:12:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:49,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:12:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:49,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:12:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:49,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:12:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:49,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-21 00:12:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:49,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-21 00:12:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:12:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:12:49,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:12:49,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332201845] [2022-03-21 00:12:49,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332201845] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:49,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:12:49,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:12:49,384 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:12:49,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1891334996] [2022-03-21 00:12:49,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1891334996] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:12:49,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:12:49,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-21 00:12:49,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227938783] [2022-03-21 00:12:49,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:12:49,385 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-21 00:12:49,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:12:49,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-21 00:12:49,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-21 00:12:49,385 INFO L87 Difference]: Start difference. First operand 5547 states and 7904 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:12:59,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:13:05,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:13:05,997 INFO L93 Difference]: Finished difference Result 11475 states and 16742 transitions. [2022-03-21 00:13:05,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-21 00:13:05,997 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 84 [2022-03-21 00:13:05,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:13:06,018 INFO L225 Difference]: With dead ends: 11475 [2022-03-21 00:13:06,019 INFO L226 Difference]: Without dead ends: 6489 [2022-03-21 00:13:06,031 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2022-03-21 00:13:06,031 INFO L913 BasicCegarLoop]: 651 mSDtfsCounter, 2073 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 4220 mSolverCounterSat, 886 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 5107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 886 IncrementalHoareTripleChecker+Valid, 4220 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-03-21 00:13:06,031 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2105 Valid, 1588 Invalid, 5107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [886 Valid, 4220 Invalid, 1 Unknown, 0 Unchecked, 12.2s Time] [2022-03-21 00:13:06,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6489 states. [2022-03-21 00:13:08,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6489 to 5577. [2022-03-21 00:13:08,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 4484 states have (on average 1.4161462979482604) internal successors, (6350), 4590 states have internal predecessors, (6350), 673 states have call successors, (673), 347 states have call predecessors, (673), 419 states have return successors, (911), 661 states have call predecessors, (911), 655 states have call successors, (911) [2022-03-21 00:13:08,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 7934 transitions. [2022-03-21 00:13:08,418 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 7934 transitions. Word has length 84 [2022-03-21 00:13:08,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:13:08,418 INFO L478 AbstractCegarLoop]: Abstraction has 5577 states and 7934 transitions. [2022-03-21 00:13:08,418 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-21 00:13:08,418 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 7934 transitions. [2022-03-21 00:13:08,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-21 00:13:08,420 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:13:08,420 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:13:08,420 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-21 00:13:08,420 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:13:08,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:13:08,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1636579519, now seen corresponding path program 1 times [2022-03-21 00:13:08,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:13:08,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [538728968] [2022-03-21 00:13:08,421 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:13:08,421 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:13:08,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1636579519, now seen corresponding path program 2 times [2022-03-21 00:13:08,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:13:08,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943380916] [2022-03-21 00:13:08,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:13:08,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:13:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:08,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:13:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:08,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:13:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:08,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:13:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:08,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:13:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:08,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:13:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:08,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:13:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:08,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-21 00:13:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:08,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:13:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:08,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:13:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:13:08,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:13:08,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943380916] [2022-03-21 00:13:08,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943380916] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:13:08,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:13:08,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-21 00:13:08,979 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:13:08,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [538728968] [2022-03-21 00:13:08,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [538728968] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:13:08,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:13:08,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-21 00:13:08,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934851498] [2022-03-21 00:13:08,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:13:08,980 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-21 00:13:08,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:13:08,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-21 00:13:08,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-03-21 00:13:08,981 INFO L87 Difference]: Start difference. First operand 5577 states and 7934 transitions. Second operand has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (11), 11 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-21 00:13:18,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:13:25,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:13:25,801 INFO L93 Difference]: Finished difference Result 6382 states and 9265 transitions. [2022-03-21 00:13:25,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-21 00:13:25,802 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (11), 11 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 85 [2022-03-21 00:13:25,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:13:25,815 INFO L225 Difference]: With dead ends: 6382 [2022-03-21 00:13:25,815 INFO L226 Difference]: Without dead ends: 6360 [2022-03-21 00:13:25,817 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-03-21 00:13:25,818 INFO L913 BasicCegarLoop]: 666 mSDtfsCounter, 1860 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 5123 mSolverCounterSat, 728 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 5852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 5123 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-03-21 00:13:25,818 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1896 Valid, 1885 Invalid, 5852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 5123 Invalid, 1 Unknown, 0 Unchecked, 12.5s Time] [2022-03-21 00:13:25,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6360 states. [2022-03-21 00:13:28,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6360 to 5576. [2022-03-21 00:13:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5576 states, 4484 states have (on average 1.4159232827832293) internal successors, (6349), 4589 states have internal predecessors, (6349), 672 states have call successors, (672), 347 states have call predecessors, (672), 419 states have return successors, (910), 661 states have call predecessors, (910), 654 states have call successors, (910) [2022-03-21 00:13:28,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5576 states to 5576 states and 7931 transitions. [2022-03-21 00:13:28,210 INFO L78 Accepts]: Start accepts. Automaton has 5576 states and 7931 transitions. Word has length 85 [2022-03-21 00:13:28,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:13:28,210 INFO L478 AbstractCegarLoop]: Abstraction has 5576 states and 7931 transitions. [2022-03-21 00:13:28,210 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (11), 11 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-21 00:13:28,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5576 states and 7931 transitions. [2022-03-21 00:13:28,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-21 00:13:28,212 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:13:28,212 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:13:28,212 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-21 00:13:28,212 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:13:28,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:13:28,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1782537127, now seen corresponding path program 1 times [2022-03-21 00:13:28,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:13:28,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1896065005] [2022-03-21 00:13:28,213 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:13:28,214 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:13:28,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1782537127, now seen corresponding path program 2 times [2022-03-21 00:13:28,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:13:28,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99953092] [2022-03-21 00:13:28,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:13:28,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:13:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:28,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:13:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:28,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-21 00:13:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:28,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-21 00:13:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:28,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-21 00:13:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:28,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:13:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:28,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-21 00:13:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:28,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-21 00:13:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:28,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-21 00:13:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:28,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-21 00:13:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:13:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-21 00:13:28,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:13:28,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99953092] [2022-03-21 00:13:28,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99953092] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:13:28,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:13:28,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:13:28,827 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:13:28,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1896065005] [2022-03-21 00:13:28,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1896065005] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:13:28,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:13:28,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-21 00:13:28,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424327518] [2022-03-21 00:13:28,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:13:28,828 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-21 00:13:28,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:13:28,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-21 00:13:28,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-03-21 00:13:28,829 INFO L87 Difference]: Start difference. First operand 5576 states and 7931 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (11), 11 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-21 00:13:35,774 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 []