/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/diskperf.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 23:54:08,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 23:54:08,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 23:54:08,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 23:54:08,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 23:54:08,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 23:54:08,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 23:54:08,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 23:54:08,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 23:54:08,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 23:54:08,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 23:54:08,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 23:54:08,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 23:54:08,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 23:54:08,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 23:54:08,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 23:54:08,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 23:54:08,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 23:54:08,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 23:54:08,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 23:54:08,781 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 23:54:08,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 23:54:08,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 23:54:08,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 23:54:08,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 23:54:08,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 23:54:08,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 23:54:08,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 23:54:08,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 23:54:08,813 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-20 23:54:08,837 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 23:54:08,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 23:54:08,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 23:54:08,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 23:54:08,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 23:54:08,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 23:54:08,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 23:54:08,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 23:54:08,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 23:54:08,840 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 23:54:08,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 23:54:08,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 23:54:08,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 23:54:08,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 23:54:08,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 23:54:08,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 23:54:08,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 23:54:08,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 23:54:08,841 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 23:54:08,841 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 23:54:08,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 23:54:08,841 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-20 23:54:08,841 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 23:54:09,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 23:54:09,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 23:54:09,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 23:54:09,076 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 23:54:09,076 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 23:54:09,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/diskperf.i.cil-1.c [2022-03-20 23:54:09,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5f605ad0/283fe0eb2eff47d1bd3720b72afb2f45/FLAGcf0b692a2 [2022-03-20 23:54:09,713 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 23:54:09,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/diskperf.i.cil-1.c [2022-03-20 23:54:09,746 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5f605ad0/283fe0eb2eff47d1bd3720b72afb2f45/FLAGcf0b692a2 [2022-03-20 23:54:10,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5f605ad0/283fe0eb2eff47d1bd3720b72afb2f45 [2022-03-20 23:54:10,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 23:54:10,108 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 23:54:10,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 23:54:10,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 23:54:10,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 23:54:10,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 11:54:10" (1/1) ... [2022-03-20 23:54:10,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aea971c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:54:10, skipping insertion in model container [2022-03-20 23:54:10,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 11:54:10" (1/1) ... [2022-03-20 23:54:10,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 23:54:10,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 23:54:10,552 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/diskperf.i.cil-1.c[84645,84658] [2022-03-20 23:54:10,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 23:54:10,802 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 23:54:10,840 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/diskperf.i.cil-1.c[84645,84658] [2022-03-20 23:54:10,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 23:54:10,982 INFO L208 MainTranslator]: Completed translation [2022-03-20 23:54:10,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:54:10 WrapperNode [2022-03-20 23:54:10,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 23:54:10,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 23:54:10,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 23:54:10,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 23:54:10,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:54:10" (1/1) ... [2022-03-20 23:54:10,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:54:10" (1/1) ... [2022-03-20 23:54:11,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:54:10" (1/1) ... [2022-03-20 23:54:11,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:54:10" (1/1) ... [2022-03-20 23:54:11,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:54:10" (1/1) ... [2022-03-20 23:54:11,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:54:10" (1/1) ... [2022-03-20 23:54:11,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:54:10" (1/1) ... [2022-03-20 23:54:11,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 23:54:11,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 23:54:11,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 23:54:11,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 23:54:11,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:54:10" (1/1) ... [2022-03-20 23:54:11,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 23:54:11,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 23:54:11,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 23:54:11,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 23:54:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 23:54:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 23:54:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 23:54:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-03-20 23:54:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-03-20 23:54:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-03-20 23:54:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-03-20 23:54:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure KeGetCurrentProcessorNumber [2022-03-20 23:54:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQuerySystemTime [2022-03-20 23:54:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateErrorLogEntry [2022-03-20 23:54:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWriteErrorLogEntry [2022-03-20 23:54:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWMIRegistrationControl [2022-03-20 23:54:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryPerformanceCounter [2022-03-20 23:54:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure WmiCompleteRequest [2022-03-20 23:54:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-20 23:54:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-20 23:54:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-03-20 23:54:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSyncFilterWithTarget [2022-03-20 23:54:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfAddDevice [2022-03-20 23:54:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPnp [2022-03-20 23:54:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIrpCompletion [2022-03-20 23:54:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfStartDevice [2022-03-20 23:54:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRemoveDevice [2022-03-20 23:54:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSendToNextDriver [2022-03-20 23:54:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPower [2022-03-20 23:54:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfForwardIrpSynchronous [2022-03-20 23:54:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfCreate [2022-03-20 23:54:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfReadWrite [2022-03-20 23:54:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIoCompletion [2022-03-20 23:54:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDeviceControl [2022-03-20 23:54:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfWmi [2022-03-20 23:54:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfShutdownFlush [2022-03-20 23:54:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfUnload [2022-03-20 23:54:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRegisterDevice [2022-03-20 23:54:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfLogError [2022-03-20 23:54:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskperfQueryWmiRegInfo [2022-03-20 23:54:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskperfQueryWmiDataBlock [2022-03-20 23:54:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskperfWmiFunctionControl [2022-03-20 23:54:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfAddCounters [2022-03-20 23:54:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-20 23:54:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 23:54:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-03-20 23:54:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-03-20 23:54:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-03-20 23:54:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-03-20 23:54:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-03-20 23:54:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-03-20 23:54:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-03-20 23:54:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-03-20 23:54:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-03-20 23:54:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-03-20 23:54:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-20 23:54:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-03-20 23:54:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-03-20 23:54:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-03-20 23:54:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-20 23:54:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-03-20 23:54:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-03-20 23:54:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-03-20 23:54:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-03-20 23:54:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-20 23:54:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-20 23:54:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-03-20 23:54:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-20 23:54:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-03-20 23:54:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-20 23:54:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-20 23:54:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-20 23:54:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-03-20 23:54:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-03-20 23:54:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-03-20 23:54:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-03-20 23:54:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-03-20 23:54:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-03-20 23:54:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-03-20 23:54:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-20 23:54:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-20 23:54:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-03-20 23:54:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-03-20 23:54:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-03-20 23:54:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-03-20 23:54:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-03-20 23:54:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-03-20 23:54:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-20 23:54:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-03-20 23:54:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-20 23:54:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-03-20 23:54:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-20 23:54:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-03-20 23:54:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-03-20 23:54:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-03-20 23:54:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-03-20 23:54:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-03-20 23:54:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-03-20 23:54:11,280 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-03-20 23:54:11,280 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-03-20 23:54:11,280 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-03-20 23:54:11,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-20 23:54:11,280 INFO L138 BoogieDeclarations]: Found implementation of procedure WmiSystemControl [2022-03-20 23:54:11,280 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-03-20 23:54:11,280 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-20 23:54:11,280 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-03-20 23:54:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 23:54:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 23:54:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 23:54:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 23:54:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 23:54:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 23:54:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-20 23:54:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-03-20 23:54:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-03-20 23:54:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-20 23:54:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-03-20 23:54:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-03-20 23:54:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-20 23:54:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-03-20 23:54:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-03-20 23:54:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-03-20 23:54:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-03-20 23:54:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-03-20 23:54:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-03-20 23:54:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-03-20 23:54:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-03-20 23:54:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-03-20 23:54:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 23:54:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 23:54:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-03-20 23:54:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-03-20 23:54:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure KeGetCurrentProcessorNumber [2022-03-20 23:54:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-03-20 23:54:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-20 23:54:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-03-20 23:54:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-03-20 23:54:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-03-20 23:54:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-20 23:54:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-03-20 23:54:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-03-20 23:54:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure KeQuerySystemTime [2022-03-20 23:54:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-03-20 23:54:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-03-20 23:54:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-03-20 23:54:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-03-20 23:54:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-03-20 23:54:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-03-20 23:54:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-03-20 23:54:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-03-20 23:54:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-03-20 23:54:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-03-20 23:54:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-03-20 23:54:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-03-20 23:54:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-03-20 23:54:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-20 23:54:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-03-20 23:54:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateErrorLogEntry [2022-03-20 23:54:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-20 23:54:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-03-20 23:54:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-03-20 23:54:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-03-20 23:54:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-20 23:54:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-20 23:54:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-20 23:54:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-03-20 23:54:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-03-20 23:54:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-03-20 23:54:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-20 23:54:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-03-20 23:54:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-03-20 23:54:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-03-20 23:54:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-03-20 23:54:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-20 23:54:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-03-20 23:54:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-03-20 23:54:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure IoWriteErrorLogEntry [2022-03-20 23:54:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure IoWMIRegistrationControl [2022-03-20 23:54:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-20 23:54:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-20 23:54:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryPerformanceCounter [2022-03-20 23:54:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-20 23:54:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 23:54:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 23:54:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-20 23:54:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-03-20 23:54:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-20 23:54:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-03-20 23:54:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-20 23:54:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-03-20 23:54:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure WmiCompleteRequest [2022-03-20 23:54:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure WmiSystemControl [2022-03-20 23:54:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-20 23:54:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-20 23:54:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-03-20 23:54:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfForwardIrpSynchronous [2022-03-20 23:54:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfAddDevice [2022-03-20 23:54:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPnp [2022-03-20 23:54:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPower [2022-03-20 23:54:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfStartDevice [2022-03-20 23:54:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRemoveDevice [2022-03-20 23:54:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSendToNextDriver [2022-03-20 23:54:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfCreate [2022-03-20 23:54:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfReadWrite [2022-03-20 23:54:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIoCompletion [2022-03-20 23:54:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDeviceControl [2022-03-20 23:54:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfShutdownFlush [2022-03-20 23:54:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfUnload [2022-03-20 23:54:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfWmi [2022-03-20 23:54:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfLogError [2022-03-20 23:54:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRegisterDevice [2022-03-20 23:54:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIrpCompletion [2022-03-20 23:54:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure DiskperfQueryWmiRegInfo [2022-03-20 23:54:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure DiskperfQueryWmiDataBlock [2022-03-20 23:54:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSyncFilterWithTarget [2022-03-20 23:54:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure DiskperfWmiFunctionControl [2022-03-20 23:54:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfAddCounters [2022-03-20 23:54:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-20 23:54:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-20 23:54:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-03-20 23:54:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-03-20 23:54:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-20 23:54:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-20 23:54:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 23:54:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-20 23:54:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-03-20 23:54:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 23:54:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-03-20 23:54:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 23:54:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-20 23:54:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-20 23:54:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-20 23:54:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-20 23:54:11,990 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 23:54:11,995 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 23:54:12,025 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:12,073 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:54:12,074 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:54:12,074 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:12,079 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:54:12,079 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:54:12,101 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:12,106 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:54:12,106 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:54:12,107 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:12,116 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:54:12,116 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:54:12,120 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:12,127 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:54:12,127 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:54:12,128 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:12,133 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:54:12,134 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:54:12,134 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:12,147 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:54:12,148 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:54:12,148 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:12,178 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:54:12,178 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:54:12,535 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:12,539 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:54:12,540 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:54:12,555 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:12,558 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:54:12,558 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:54:12,559 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:12,564 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:54:12,564 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:54:12,573 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:12,578 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:54:12,578 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:54:12,589 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:12,593 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:54:12,593 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:54:12,596 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:12,605 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !false; [2022-03-20 23:54:12,605 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume false; [2022-03-20 23:54:12,674 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:12,698 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-03-20 23:54:12,698 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-03-20 23:54:14,374 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:14,384 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:54:14,384 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:54:14,395 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:48,092 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !false; [2022-03-20 23:54:48,092 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume false; [2022-03-20 23:54:48,177 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:48,187 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:54:48,187 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:54:48,404 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:48,413 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:54:48,414 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:54:48,420 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:48,440 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-20 23:54:48,440 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-20 23:54:54,928 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:55,024 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-20 23:54:55,024 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-20 23:54:55,064 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:55,098 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-20 23:54:55,098 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-20 23:54:55,162 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:55,174 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:54:55,175 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:54:57,746 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 23:54:57,759 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 23:54:57,759 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 23:54:57,913 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 23:54:57,930 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 23:54:57,931 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-20 23:54:57,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 11:54:57 BoogieIcfgContainer [2022-03-20 23:54:57,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 23:54:57,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 23:54:57,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 23:54:57,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 23:54:57,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 11:54:10" (1/3) ... [2022-03-20 23:54:57,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9d89cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 11:54:57, skipping insertion in model container [2022-03-20 23:54:57,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 11:54:10" (2/3) ... [2022-03-20 23:54:57,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9d89cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 11:54:57, skipping insertion in model container [2022-03-20 23:54:57,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 11:54:57" (3/3) ... [2022-03-20 23:54:57,942 INFO L111 eAbstractionObserver]: Analyzing ICFG diskperf.i.cil-1.c [2022-03-20 23:54:57,946 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 23:54:57,946 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 23:54:57,976 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 23:54:57,981 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 23:54:57,981 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 23:54:58,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 540 states, 370 states have (on average 1.3675675675675676) internal successors, (506), 386 states have internal predecessors, (506), 119 states have call successors, (119), 42 states have call predecessors, (119), 42 states have return successors, (119), 114 states have call predecessors, (119), 119 states have call successors, (119) [2022-03-20 23:54:58,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-20 23:54:58,008 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:54:58,008 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 23:54:58,009 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:54:58,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:54:58,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1505928512, now seen corresponding path program 1 times [2022-03-20 23:54:58,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:54:58,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1507069138] [2022-03-20 23:54:58,023 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:54:58,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1505928512, now seen corresponding path program 2 times [2022-03-20 23:54:58,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:54:58,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041955551] [2022-03-20 23:54:58,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:54:58,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:54:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:55:11,816 WARN L232 SmtUtils]: Spent 12.49s on a formula simplification that was a NOOP. DAG size: 2032 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 23:55:11,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:55:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:55:12,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 23:55:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:55:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:55:12,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:55:12,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041955551] [2022-03-20 23:55:12,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041955551] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:55:12,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:55:12,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 23:55:12,162 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:55:12,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1507069138] [2022-03-20 23:55:12,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1507069138] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:55:12,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:55:12,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 23:55:12,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618247817] [2022-03-20 23:55:12,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:55:12,167 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 23:55:12,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:55:12,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 23:55:12,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-20 23:55:12,193 INFO L87 Difference]: Start difference. First operand has 540 states, 370 states have (on average 1.3675675675675676) internal successors, (506), 386 states have internal predecessors, (506), 119 states have call successors, (119), 42 states have call predecessors, (119), 42 states have return successors, (119), 114 states have call predecessors, (119), 119 states have call successors, (119) Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 23:55:14,416 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:55:29,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:55:29,961 INFO L93 Difference]: Finished difference Result 973 states and 1439 transitions. [2022-03-20 23:55:29,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 23:55:29,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-03-20 23:55:29,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:55:29,974 INFO L225 Difference]: With dead ends: 973 [2022-03-20 23:55:29,974 INFO L226 Difference]: Without dead ends: 533 [2022-03-20 23:55:29,990 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-20 23:55:30,001 INFO L913 BasicCegarLoop]: 532 mSDtfsCounter, 278 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 118 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-03-20 23:55:30,002 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 579 Invalid, 839 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 720 Invalid, 1 Unknown, 0 Unchecked, 16.8s Time] [2022-03-20 23:55:30,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-03-20 23:55:30,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 434. [2022-03-20 23:55:30,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 297 states have (on average 1.3333333333333333) internal successors, (396), 314 states have internal predecessors, (396), 98 states have call successors, (98), 40 states have call predecessors, (98), 38 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2022-03-20 23:55:30,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 577 transitions. [2022-03-20 23:55:30,623 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 577 transitions. Word has length 24 [2022-03-20 23:55:30,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:55:30,623 INFO L478 AbstractCegarLoop]: Abstraction has 434 states and 577 transitions. [2022-03-20 23:55:30,623 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 23:55:30,623 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 577 transitions. [2022-03-20 23:55:30,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-20 23:55:30,624 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:55:30,624 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] [2022-03-20 23:55:30,624 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 23:55:30,624 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:55:30,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:55:30,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1797822610, now seen corresponding path program 1 times [2022-03-20 23:55:30,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:55:30,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1743947325] [2022-03-20 23:55:30,625 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 23:55:30,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1797822610, now seen corresponding path program 2 times [2022-03-20 23:55:30,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:55:30,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696222525] [2022-03-20 23:55:30,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:55:30,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:55:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:55:44,677 WARN L232 SmtUtils]: Spent 13.31s on a formula simplification that was a NOOP. DAG size: 2032 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 23:55:44,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:55:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:55:44,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 23:55:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:55:44,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 23:55:44,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:55:44,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696222525] [2022-03-20 23:55:44,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696222525] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:55:44,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:55:44,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 23:55:44,994 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:55:44,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1743947325] [2022-03-20 23:55:44,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1743947325] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:55:44,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:55:44,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 23:55:44,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674437417] [2022-03-20 23:55:44,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:55:44,995 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 23:55:44,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:55:44,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 23:55:44,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 23:55:44,996 INFO L87 Difference]: Start difference. First operand 434 states and 577 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 23:55:57,072 WARN L232 SmtUtils]: Spent 11.88s on a formula simplification that was a NOOP. DAG size: 2035 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 23:56:09,543 WARN L232 SmtUtils]: Spent 12.39s on a formula simplification that was a NOOP. DAG size: 2035 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 23:56:11,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:56:13,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:56:15,957 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:56:28,244 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-03-20 23:56:36,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:56:38,583 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:56:40,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:56:40,207 INFO L93 Difference]: Finished difference Result 965 states and 1308 transitions. [2022-03-20 23:56:40,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 23:56:40,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-03-20 23:56:40,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:56:40,215 INFO L225 Difference]: With dead ends: 965 [2022-03-20 23:56:40,215 INFO L226 Difference]: Without dead ends: 539 [2022-03-20 23:56:40,219 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 37.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-20 23:56:40,221 INFO L913 BasicCegarLoop]: 532 mSDtfsCounter, 282 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 124 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.8s IncrementalHoareTripleChecker+Time [2022-03-20 23:56:40,221 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 1063 Invalid, 1571 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 1441 Invalid, 6 Unknown, 0 Unchecked, 29.8s Time] [2022-03-20 23:56:40,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-03-20 23:56:40,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 438. [2022-03-20 23:56:40,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 301 states have (on average 1.3289036544850499) internal successors, (400), 318 states have internal predecessors, (400), 98 states have call successors, (98), 40 states have call predecessors, (98), 38 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2022-03-20 23:56:40,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 581 transitions. [2022-03-20 23:56:40,886 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 581 transitions. Word has length 26 [2022-03-20 23:56:40,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:56:40,886 INFO L478 AbstractCegarLoop]: Abstraction has 438 states and 581 transitions. [2022-03-20 23:56:40,886 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 23:56:40,886 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 581 transitions. [2022-03-20 23:56:40,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-20 23:56:40,887 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:56:40,887 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 23:56:40,887 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 23:56:40,888 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:56:40,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:56:40,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1297863630, now seen corresponding path program 1 times [2022-03-20 23:56:40,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:56:40,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1085839982] [2022-03-20 23:56:40,894 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-20 23:56:40,894 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 23:56:40,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1297863630, now seen corresponding path program 2 times [2022-03-20 23:56:40,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:56:40,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126510401] [2022-03-20 23:56:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:56:40,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:56:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:53,983 WARN L232 SmtUtils]: Spent 12.15s on a formula simplification that was a NOOP. DAG size: 2032 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 23:56:53,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:56:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:54,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 23:56:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:56:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 23:56:54,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:56:54,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126510401] [2022-03-20 23:56:54,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126510401] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:56:54,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:56:54,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 23:56:54,379 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:56:54,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1085839982] [2022-03-20 23:56:54,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1085839982] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:56:54,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:56:54,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 23:56:54,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681021740] [2022-03-20 23:56:54,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:56:54,384 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 23:56:54,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:56:54,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 23:56:54,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 23:56:54,385 INFO L87 Difference]: Start difference. First operand 438 states and 581 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-20 23:57:07,142 WARN L232 SmtUtils]: Spent 12.61s on a formula simplification that was a NOOP. DAG size: 2033 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 23:57:09,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:57:23,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:57:23,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:57:23,634 INFO L93 Difference]: Finished difference Result 557 states and 762 transitions. [2022-03-20 23:57:23,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 23:57:23,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2022-03-20 23:57:23,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:57:23,637 INFO L225 Difference]: With dead ends: 557 [2022-03-20 23:57:23,637 INFO L226 Difference]: Without dead ends: 537 [2022-03-20 23:57:23,637 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-20 23:57:23,638 INFO L913 BasicCegarLoop]: 533 mSDtfsCounter, 485 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 243 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-03-20 23:57:23,638 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 794 Invalid, 1038 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [243 Valid, 793 Invalid, 2 Unknown, 0 Unchecked, 15.4s Time] [2022-03-20 23:57:23,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-03-20 23:57:24,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 438. [2022-03-20 23:57:24,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 301 states have (on average 1.3255813953488371) internal successors, (399), 318 states have internal predecessors, (399), 98 states have call successors, (98), 40 states have call predecessors, (98), 38 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2022-03-20 23:57:24,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 580 transitions. [2022-03-20 23:57:24,281 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 580 transitions. Word has length 30 [2022-03-20 23:57:24,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:57:24,282 INFO L478 AbstractCegarLoop]: Abstraction has 438 states and 580 transitions. [2022-03-20 23:57:24,282 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-20 23:57:24,282 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 580 transitions. [2022-03-20 23:57:24,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-20 23:57:24,282 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:57:24,283 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 23:57:24,283 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 23:57:24,283 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:57:24,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:57:24,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1464136845, now seen corresponding path program 1 times [2022-03-20 23:57:24,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:57:24,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [387298197] [2022-03-20 23:57:24,284 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-20 23:57:24,284 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 23:57:24,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1464136845, now seen corresponding path program 2 times [2022-03-20 23:57:24,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:57:24,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031702644] [2022-03-20 23:57:24,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:57:24,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:57:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:37,138 WARN L232 SmtUtils]: Spent 11.06s on a formula simplification that was a NOOP. DAG size: 2032 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 23:57:37,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:57:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:37,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 23:57:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:37,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 23:57:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:57:37,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 23:57:37,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:57:37,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031702644] [2022-03-20 23:57:37,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031702644] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:57:37,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:57:37,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 23:57:37,477 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:57:37,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [387298197] [2022-03-20 23:57:37,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [387298197] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:57:37,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:57:37,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 23:57:37,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257045119] [2022-03-20 23:57:37,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:57:37,477 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 23:57:37,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:57:37,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 23:57:37,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 23:57:37,478 INFO L87 Difference]: Start difference. First operand 438 states and 580 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 23:57:47,998 WARN L232 SmtUtils]: Spent 10.36s on a formula simplification that was a NOOP. DAG size: 2033 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 23:57:50,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:58:06,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:58:07,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:58:07,319 INFO L93 Difference]: Finished difference Result 1142 states and 1574 transitions. [2022-03-20 23:58:07,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 23:58:07,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-03-20 23:58:07,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:58:07,325 INFO L225 Difference]: With dead ends: 1142 [2022-03-20 23:58:07,325 INFO L226 Difference]: Without dead ends: 853 [2022-03-20 23:58:07,326 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-20 23:58:07,327 INFO L913 BasicCegarLoop]: 729 mSDtfsCounter, 1112 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 386 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-03-20 23:58:07,327 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1141 Valid, 1027 Invalid, 1733 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [386 Valid, 1345 Invalid, 2 Unknown, 0 Unchecked, 17.8s Time] [2022-03-20 23:58:07,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-03-20 23:58:08,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 696. [2022-03-20 23:58:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 486 states have (on average 1.3106995884773662) internal successors, (637), 499 states have internal predecessors, (637), 143 states have call successors, (143), 62 states have call predecessors, (143), 66 states have return successors, (163), 140 states have call predecessors, (163), 131 states have call successors, (163) [2022-03-20 23:58:08,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 943 transitions. [2022-03-20 23:58:08,347 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 943 transitions. Word has length 35 [2022-03-20 23:58:08,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:58:08,347 INFO L478 AbstractCegarLoop]: Abstraction has 696 states and 943 transitions. [2022-03-20 23:58:08,347 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 23:58:08,348 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 943 transitions. [2022-03-20 23:58:08,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-20 23:58:08,349 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:58:08,350 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 23:58:08,350 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 23:58:08,350 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:58:08,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:58:08,350 INFO L85 PathProgramCache]: Analyzing trace with hash 5168989, now seen corresponding path program 1 times [2022-03-20 23:58:08,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:58:08,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [653469245] [2022-03-20 23:58:08,351 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-20 23:58:08,351 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 23:58:08,351 INFO L85 PathProgramCache]: Analyzing trace with hash 5168989, now seen corresponding path program 2 times [2022-03-20 23:58:08,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:58:08,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004159368] [2022-03-20 23:58:08,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:58:08,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:58:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:21,338 WARN L232 SmtUtils]: Spent 11.33s on a formula simplification that was a NOOP. DAG size: 2032 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 23:58:21,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:58:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:21,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 23:58:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:21,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 23:58:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:58:21,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 23:58:21,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:58:21,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004159368] [2022-03-20 23:58:21,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004159368] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:58:21,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:58:21,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 23:58:21,763 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:58:21,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [653469245] [2022-03-20 23:58:21,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [653469245] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:58:21,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:58:21,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 23:58:21,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484170883] [2022-03-20 23:58:21,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:58:21,764 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 23:58:21,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:58:21,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 23:58:21,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 23:58:21,764 INFO L87 Difference]: Start difference. First operand 696 states and 943 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 23:58:34,863 WARN L232 SmtUtils]: Spent 12.87s on a formula simplification that was a NOOP. DAG size: 2034 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 23:58:36,958 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:58:49,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:58:51,626 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 [] [2022-03-20 23:58:53,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:58:53,172 INFO L93 Difference]: Finished difference Result 1247 states and 1733 transitions. [2022-03-20 23:58:53,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 23:58:53,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2022-03-20 23:58:53,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:58:53,176 INFO L225 Difference]: With dead ends: 1247 [2022-03-20 23:58:53,176 INFO L226 Difference]: Without dead ends: 675 [2022-03-20 23:58:53,178 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-20 23:58:53,179 INFO L913 BasicCegarLoop]: 456 mSDtfsCounter, 637 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 187 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-03-20 23:58:53,179 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 548 Invalid, 1064 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [187 Valid, 874 Invalid, 3 Unknown, 0 Unchecked, 17.2s Time] [2022-03-20 23:58:53,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-03-20 23:58:54,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 628. [2022-03-20 23:58:54,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 435 states have (on average 1.3011494252873563) internal successors, (566), 447 states have internal predecessors, (566), 133 states have call successors, (133), 55 states have call predecessors, (133), 59 states have return successors, (154), 131 states have call predecessors, (154), 122 states have call successors, (154) [2022-03-20 23:58:54,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 853 transitions. [2022-03-20 23:58:54,013 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 853 transitions. Word has length 45 [2022-03-20 23:58:54,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:58:54,013 INFO L478 AbstractCegarLoop]: Abstraction has 628 states and 853 transitions. [2022-03-20 23:58:54,013 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 23:58:54,013 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 853 transitions. [2022-03-20 23:58:54,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-20 23:58:54,014 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:58:54,014 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 23:58:54,014 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 23:58:54,015 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:58:54,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:58:54,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1041269887, now seen corresponding path program 1 times [2022-03-20 23:58:54,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:58:54,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1853436392] [2022-03-20 23:58:54,016 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-20 23:58:54,016 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 23:58:54,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1041269887, now seen corresponding path program 2 times [2022-03-20 23:58:54,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:58:54,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058548566] [2022-03-20 23:58:54,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:58:54,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:58:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:07,690 WARN L232 SmtUtils]: Spent 12.25s on a formula simplification that was a NOOP. DAG size: 2032 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 23:59:07,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:59:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:07,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 23:59:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:08,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 23:59:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 23:59:08,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:59:08,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058548566] [2022-03-20 23:59:08,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058548566] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:59:08,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:59:08,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 23:59:08,013 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:59:08,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1853436392] [2022-03-20 23:59:08,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1853436392] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:59:08,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:59:08,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 23:59:08,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954827435] [2022-03-20 23:59:08,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:59:08,014 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 23:59:08,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:59:08,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 23:59:08,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 23:59:08,014 INFO L87 Difference]: Start difference. First operand 628 states and 853 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 23:59:19,832 WARN L232 SmtUtils]: Spent 11.58s on a formula simplification that was a NOOP. DAG size: 2033 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 23:59:21,927 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 [] [2022-03-20 23:59:38,002 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 23:59:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 23:59:39,783 INFO L93 Difference]: Finished difference Result 724 states and 991 transitions. [2022-03-20 23:59:39,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 23:59:39,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-03-20 23:59:39,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 23:59:39,793 INFO L225 Difference]: With dead ends: 724 [2022-03-20 23:59:39,794 INFO L226 Difference]: Without dead ends: 720 [2022-03-20 23:59:39,794 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-20 23:59:39,796 INFO L913 BasicCegarLoop]: 514 mSDtfsCounter, 265 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 102 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2022-03-20 23:59:39,797 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 838 Invalid, 1310 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [102 Valid, 1206 Invalid, 2 Unknown, 0 Unchecked, 18.8s Time] [2022-03-20 23:59:39,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-03-20 23:59:40,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 658. [2022-03-20 23:59:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 461 states have (on average 1.3058568329718003) internal successors, (602), 471 states have internal predecessors, (602), 135 states have call successors, (135), 58 states have call predecessors, (135), 61 states have return successors, (156), 133 states have call predecessors, (156), 124 states have call successors, (156) [2022-03-20 23:59:40,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 893 transitions. [2022-03-20 23:59:40,870 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 893 transitions. Word has length 45 [2022-03-20 23:59:40,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 23:59:40,870 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 893 transitions. [2022-03-20 23:59:40,870 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 23:59:40,870 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 893 transitions. [2022-03-20 23:59:40,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-20 23:59:40,871 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 23:59:40,871 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 23:59:40,871 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 23:59:40,872 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 23:59:40,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 23:59:40,872 INFO L85 PathProgramCache]: Analyzing trace with hash 221945446, now seen corresponding path program 1 times [2022-03-20 23:59:40,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 23:59:40,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [130468875] [2022-03-20 23:59:40,873 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-20 23:59:40,873 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 23:59:40,873 INFO L85 PathProgramCache]: Analyzing trace with hash 221945446, now seen corresponding path program 2 times [2022-03-20 23:59:40,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 23:59:40,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395159565] [2022-03-20 23:59:40,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 23:59:40,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 23:59:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:56,054 WARN L232 SmtUtils]: Spent 13.50s on a formula simplification that was a NOOP. DAG size: 2032 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 23:59:56,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 23:59:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:56,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 23:59:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:56,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 23:59:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:56,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 23:59:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:56,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 23:59:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 23:59:56,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 23:59:56,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 23:59:56,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395159565] [2022-03-20 23:59:56,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395159565] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:59:56,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:59:56,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 23:59:56,613 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 23:59:56,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [130468875] [2022-03-20 23:59:56,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [130468875] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 23:59:56,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 23:59:56,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 23:59:56,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637663511] [2022-03-20 23:59:56,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 23:59:56,614 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 23:59:56,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 23:59:56,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 23:59:56,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-20 23:59:56,615 INFO L87 Difference]: Start difference. First operand 658 states and 893 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-21 00:00:12,032 WARN L232 SmtUtils]: Spent 15.36s on a formula simplification that was a NOOP. DAG size: 2041 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:00:27,914 WARN L232 SmtUtils]: Spent 15.58s on a formula simplification that was a NOOP. DAG size: 2042 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:00:42,362 WARN L232 SmtUtils]: Spent 14.30s on a formula simplification that was a NOOP. DAG size: 2033 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:00:44,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:00:46,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:00:48,598 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:00:50,843 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:00:52,879 WARN L534 Checker$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 00:00:54,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:00:56,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:01:12,268 WARN L232 SmtUtils]: Spent 14.92s on a formula simplification that was a NOOP. DAG size: 2043 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:01:30,718 WARN L232 SmtUtils]: Spent 17.76s on a formula simplification that was a NOOP. DAG size: 2034 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:02:08,566 WARN L232 SmtUtils]: Spent 32.01s on a formula simplification. DAG size of input: 2046 DAG size of output: 2044 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:02:27,920 WARN L232 SmtUtils]: Spent 17.36s on a formula simplification that was a NOOP. DAG size: 2045 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:02:37,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:02:37,223 INFO L93 Difference]: Finished difference Result 807 states and 1121 transitions. [2022-03-21 00:02:37,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-21 00:02:37,224 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2022-03-21 00:02:37,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:02:37,227 INFO L225 Difference]: With dead ends: 807 [2022-03-21 00:02:37,227 INFO L226 Difference]: Without dead ends: 796 [2022-03-21 00:02:37,228 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 142.4s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-03-21 00:02:37,228 INFO L913 BasicCegarLoop]: 403 mSDtfsCounter, 1273 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 679 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 2274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:02:37,229 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 940 Invalid, 2274 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [679 Valid, 1588 Invalid, 7 Unknown, 0 Unchecked, 30.1s Time] [2022-03-21 00:02:37,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-03-21 00:02:38,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 680. [2022-03-21 00:02:38,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 479 states have (on average 1.3048016701461378) internal successors, (625), 491 states have internal predecessors, (625), 135 states have call successors, (135), 58 states have call predecessors, (135), 65 states have return successors, (160), 135 states have call predecessors, (160), 124 states have call successors, (160) [2022-03-21 00:02:38,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 920 transitions. [2022-03-21 00:02:38,517 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 920 transitions. Word has length 49 [2022-03-21 00:02:38,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:02:38,519 INFO L478 AbstractCegarLoop]: Abstraction has 680 states and 920 transitions. [2022-03-21 00:02:38,519 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-21 00:02:38,519 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 920 transitions. [2022-03-21 00:02:38,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-21 00:02:38,521 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:02:38,521 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-21 00:02:38,521 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-21 00:02:38,521 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:02:38,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:02:38,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2146360932, now seen corresponding path program 1 times [2022-03-21 00:02:38,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:38,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1345477932] [2022-03-21 00:02:38,522 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:02:38,522 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:02:38,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2146360932, now seen corresponding path program 2 times [2022-03-21 00:02:38,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:02:38,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570444525] [2022-03-21 00:02:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:02:38,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:02:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:52,530 WARN L232 SmtUtils]: Spent 12.00s on a formula simplification that was a NOOP. DAG size: 2032 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:02:52,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:02:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:52,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:02:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:52,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-21 00:02:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:53,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:02:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:53,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:02:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:02:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-21 00:02:53,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:02:53,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570444525] [2022-03-21 00:02:53,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570444525] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:53,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:53,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-21 00:02:53,200 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:02:53,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1345477932] [2022-03-21 00:02:53,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1345477932] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:02:53,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:02:53,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-21 00:02:53,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129193505] [2022-03-21 00:02:53,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:02:53,200 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-21 00:02:53,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:02:53,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-21 00:02:53,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:02:53,201 INFO L87 Difference]: Start difference. First operand 680 states and 920 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-21 00:03:08,987 WARN L232 SmtUtils]: Spent 15.72s on a formula simplification that was a NOOP. DAG size: 2041 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:03:20,645 WARN L232 SmtUtils]: Spent 11.28s on a formula simplification that was a NOOP. DAG size: 2042 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:03:34,815 WARN L232 SmtUtils]: Spent 14.05s on a formula simplification that was a NOOP. DAG size: 2033 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:03:36,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:03:39,091 WARN L534 Checker$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 00:03:41,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:03:43,302 WARN L534 Checker$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 00:03:45,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:03:47,366 WARN L534 Checker$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 00:04:00,885 WARN L232 SmtUtils]: Spent 13.14s on a formula simplification that was a NOOP. DAG size: 2043 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:04:14,151 WARN L232 SmtUtils]: Spent 12.43s on a formula simplification that was a NOOP. DAG size: 2034 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:04:45,743 WARN L232 SmtUtils]: Spent 25.08s on a formula simplification. DAG size of input: 2046 DAG size of output: 2044 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:04:58,165 WARN L232 SmtUtils]: Spent 10.69s on a formula simplification that was a NOOP. DAG size: 2045 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:05:01,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-03-21 00:05:12,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:05:14,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:05:14,679 INFO L93 Difference]: Finished difference Result 798 states and 1106 transitions. [2022-03-21 00:05:14,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-21 00:05:14,680 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-03-21 00:05:14,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:05:14,683 INFO L225 Difference]: With dead ends: 798 [2022-03-21 00:05:14,683 INFO L226 Difference]: Without dead ends: 790 [2022-03-21 00:05:14,683 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 115.8s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2022-03-21 00:05:14,684 INFO L913 BasicCegarLoop]: 417 mSDtfsCounter, 934 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1966 mSolverCounterSat, 399 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 1966 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.9s IncrementalHoareTripleChecker+Time [2022-03-21 00:05:14,684 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 922 Invalid, 2372 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [399 Valid, 1966 Invalid, 7 Unknown, 0 Unchecked, 35.9s Time] [2022-03-21 00:05:14,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2022-03-21 00:05:16,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 680. [2022-03-21 00:05:16,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 479 states have (on average 1.302713987473904) internal successors, (624), 491 states have internal predecessors, (624), 135 states have call successors, (135), 58 states have call predecessors, (135), 65 states have return successors, (160), 135 states have call predecessors, (160), 124 states have call successors, (160) [2022-03-21 00:05:16,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 919 transitions. [2022-03-21 00:05:16,145 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 919 transitions. Word has length 50 [2022-03-21 00:05:16,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:05:16,145 INFO L478 AbstractCegarLoop]: Abstraction has 680 states and 919 transitions. [2022-03-21 00:05:16,145 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-21 00:05:16,145 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 919 transitions. [2022-03-21 00:05:16,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-21 00:05:16,146 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:05:16,146 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:05:16,146 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-21 00:05:16,146 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:05:16,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:05:16,147 INFO L85 PathProgramCache]: Analyzing trace with hash 138187352, now seen corresponding path program 1 times [2022-03-21 00:05:16,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:05:16,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1614921434] [2022-03-21 00:05:16,147 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:05:16,148 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:05:16,148 INFO L85 PathProgramCache]: Analyzing trace with hash 138187352, now seen corresponding path program 2 times [2022-03-21 00:05:16,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:05:16,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850064132] [2022-03-21 00:05:16,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:05:16,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:05:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:35,090 WARN L232 SmtUtils]: Spent 17.03s on a formula simplification that was a NOOP. DAG size: 2032 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:05:35,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:05:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:35,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:05:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:35,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-21 00:05:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:35,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-21 00:05:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:35,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-21 00:05:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:35,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-21 00:05:35,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:05:35,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850064132] [2022-03-21 00:05:35,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850064132] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-21 00:05:35,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159902915] [2022-03-21 00:05:35,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-21 00:05:35,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:05:35,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-21 00:05:35,663 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 00:05:35,714 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 00:05:40,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-21 00:05:40,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-21 00:05:40,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 12847 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-21 00:05:40,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-21 00:05:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-21 00:05:41,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-21 00:05:41,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159902915] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:05:41,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-21 00:05:41,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-03-21 00:05:41,014 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:05:41,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1614921434] [2022-03-21 00:05:41,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1614921434] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:05:41,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:05:41,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-21 00:05:41,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819756784] [2022-03-21 00:05:41,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:05:41,015 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-21 00:05:41,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:05:41,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-21 00:05:41,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:05:41,015 INFO L87 Difference]: Start difference. First operand 680 states and 919 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-21 00:05:43,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:05:43,371 INFO L93 Difference]: Finished difference Result 1540 states and 2149 transitions. [2022-03-21 00:05:43,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-21 00:05:43,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2022-03-21 00:05:43,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:05:43,377 INFO L225 Difference]: With dead ends: 1540 [2022-03-21 00:05:43,377 INFO L226 Difference]: Without dead ends: 1055 [2022-03-21 00:05:43,379 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:05:43,381 INFO L913 BasicCegarLoop]: 637 mSDtfsCounter, 463 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-21 00:05:43,381 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 957 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-21 00:05:43,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2022-03-21 00:05:45,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1022. [2022-03-21 00:05:45,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 716 states have (on average 1.312849162011173) internal successors, (940), 734 states have internal predecessors, (940), 210 states have call successors, (210), 86 states have call predecessors, (210), 95 states have return successors, (271), 210 states have call predecessors, (271), 201 states have call successors, (271) [2022-03-21 00:05:45,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1421 transitions. [2022-03-21 00:05:45,601 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1421 transitions. Word has length 53 [2022-03-21 00:05:45,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:05:45,601 INFO L478 AbstractCegarLoop]: Abstraction has 1022 states and 1421 transitions. [2022-03-21 00:05:45,601 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-21 00:05:45,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1421 transitions. [2022-03-21 00:05:45,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-21 00:05:45,602 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:05:45,602 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:05:45,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-21 00:05:45,807 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-21 00:05:45,808 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:05:45,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:05:45,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1914557021, now seen corresponding path program 1 times [2022-03-21 00:05:45,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:05:45,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1197182686] [2022-03-21 00:05:45,809 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:05:45,809 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:05:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1914557021, now seen corresponding path program 2 times [2022-03-21 00:05:45,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:05:45,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672738896] [2022-03-21 00:05:45,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:05:45,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:05:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:59,134 WARN L232 SmtUtils]: Spent 11.50s on a formula simplification that was a NOOP. DAG size: 2032 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:05:59,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:05:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:59,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:05:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:59,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-21 00:05:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:59,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:05:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:59,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:05:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:05:59,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-21 00:05:59,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:05:59,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672738896] [2022-03-21 00:05:59,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672738896] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:05:59,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:05:59,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-21 00:05:59,657 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:05:59,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1197182686] [2022-03-21 00:05:59,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1197182686] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:05:59,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:05:59,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-21 00:05:59,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578704904] [2022-03-21 00:05:59,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:05:59,657 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-21 00:05:59,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:05:59,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-21 00:05:59,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-03-21 00:05:59,658 INFO L87 Difference]: Start difference. First operand 1022 states and 1421 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-21 00:06:12,009 WARN L232 SmtUtils]: Spent 12.31s on a formula simplification that was a NOOP. DAG size: 2041 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:06:24,630 WARN L232 SmtUtils]: Spent 12.29s on a formula simplification that was a NOOP. DAG size: 2044 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:06:37,578 WARN L232 SmtUtils]: Spent 12.86s on a formula simplification that was a NOOP. DAG size: 2035 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:06:39,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:06:41,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:06:43,931 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:01,784 WARN L534 Checker$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 00:07:04,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:07:04,597 INFO L93 Difference]: Finished difference Result 1148 states and 1636 transitions. [2022-03-21 00:07:04,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-21 00:07:04,598 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-03-21 00:07:04,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:07:04,602 INFO L225 Difference]: With dead ends: 1148 [2022-03-21 00:07:04,602 INFO L226 Difference]: Without dead ends: 1119 [2022-03-21 00:07:04,602 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 49.7s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-03-21 00:07:04,603 INFO L913 BasicCegarLoop]: 412 mSDtfsCounter, 755 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 347 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2022-03-21 00:07:04,603 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [790 Valid, 643 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 1063 Invalid, 4 Unknown, 0 Unchecked, 23.7s Time] [2022-03-21 00:07:04,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2022-03-21 00:07:07,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1000. [2022-03-21 00:07:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 699 states have (on average 1.3104434907010014) internal successors, (916), 717 states have internal predecessors, (916), 209 states have call successors, (209), 86 states have call predecessors, (209), 91 states have return successors, (267), 205 states have call predecessors, (267), 201 states have call successors, (267) [2022-03-21 00:07:07,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1392 transitions. [2022-03-21 00:07:07,056 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1392 transitions. Word has length 51 [2022-03-21 00:07:07,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:07:07,056 INFO L478 AbstractCegarLoop]: Abstraction has 1000 states and 1392 transitions. [2022-03-21 00:07:07,056 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-21 00:07:07,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1392 transitions. [2022-03-21 00:07:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-21 00:07:07,057 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:07:07,057 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:07,057 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-21 00:07:07,058 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:07:07,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:07:07,058 INFO L85 PathProgramCache]: Analyzing trace with hash -770426972, now seen corresponding path program 1 times [2022-03-21 00:07:07,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:07,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1967638610] [2022-03-21 00:07:07,059 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:07:07,059 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:07:07,059 INFO L85 PathProgramCache]: Analyzing trace with hash -770426972, now seen corresponding path program 2 times [2022-03-21 00:07:07,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:07:07,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355777525] [2022-03-21 00:07:07,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:07:07,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:07:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:22,197 WARN L232 SmtUtils]: Spent 13.33s on a formula simplification that was a NOOP. DAG size: 2032 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:07:22,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:07:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:22,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:07:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:22,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-21 00:07:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:22,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-21 00:07:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:22,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-21 00:07:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:07:22,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-21 00:07:22,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:07:22,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355777525] [2022-03-21 00:07:22,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355777525] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:22,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:22,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-21 00:07:22,883 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:07:22,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1967638610] [2022-03-21 00:07:22,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1967638610] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:07:22,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:07:22,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-21 00:07:22,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74618844] [2022-03-21 00:07:22,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:07:22,884 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-21 00:07:22,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:07:22,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-21 00:07:22,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-21 00:07:22,884 INFO L87 Difference]: Start difference. First operand 1000 states and 1392 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-21 00:07:35,245 WARN L232 SmtUtils]: Spent 12.29s on a formula simplification that was a NOOP. DAG size: 2041 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:07:37,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:39,650 WARN L534 Checker$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 00:07:41,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:43,796 WARN L534 Checker$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 00:07:45,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:48,016 WARN L534 Checker$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 00:07:50,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:52,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:07:54,119 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:04,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-03-21 00:08:13,073 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:15,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-21 00:08:17,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-21 00:08:17,222 INFO L93 Difference]: Finished difference Result 1117 states and 1591 transitions. [2022-03-21 00:08:17,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-21 00:08:17,223 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2022-03-21 00:08:17,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-21 00:08:17,259 INFO L225 Difference]: With dead ends: 1117 [2022-03-21 00:08:17,259 INFO L226 Difference]: Without dead ends: 1096 [2022-03-21 00:08:17,260 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-03-21 00:08:17,261 INFO L913 BasicCegarLoop]: 444 mSDtfsCounter, 478 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 335 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.1s IncrementalHoareTripleChecker+Time [2022-03-21 00:08:17,261 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 1314 Invalid, 2096 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [335 Valid, 1750 Invalid, 11 Unknown, 0 Unchecked, 38.1s Time] [2022-03-21 00:08:17,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2022-03-21 00:08:19,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 993. [2022-03-21 00:08:19,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 695 states have (on average 1.3107913669064748) internal successors, (911), 713 states have internal predecessors, (911), 207 states have call successors, (207), 85 states have call predecessors, (207), 90 states have return successors, (265), 203 states have call predecessors, (265), 199 states have call successors, (265) [2022-03-21 00:08:19,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1383 transitions. [2022-03-21 00:08:19,713 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1383 transitions. Word has length 52 [2022-03-21 00:08:19,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-21 00:08:19,714 INFO L478 AbstractCegarLoop]: Abstraction has 993 states and 1383 transitions. [2022-03-21 00:08:19,714 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-21 00:08:19,714 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1383 transitions. [2022-03-21 00:08:19,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-21 00:08:19,714 INFO L491 BasicCegarLoop]: Found error trace [2022-03-21 00:08:19,715 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:19,715 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-21 00:08:19,715 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-21 00:08:19,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-21 00:08:19,715 INFO L85 PathProgramCache]: Analyzing trace with hash -751146914, now seen corresponding path program 1 times [2022-03-21 00:08:19,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:19,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [456371665] [2022-03-21 00:08:19,716 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-21 00:08:19,716 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-21 00:08:19,716 INFO L85 PathProgramCache]: Analyzing trace with hash -751146914, now seen corresponding path program 2 times [2022-03-21 00:08:19,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-21 00:08:19,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257809172] [2022-03-21 00:08:19,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-21 00:08:19,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-21 00:08:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:35,906 WARN L232 SmtUtils]: Spent 14.64s on a formula simplification that was a NOOP. DAG size: 2032 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-21 00:08:35,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-21 00:08:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-21 00:08:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-21 00:08:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-21 00:08:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-21 00:08:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-21 00:08:36,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-21 00:08:36,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-21 00:08:36,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257809172] [2022-03-21 00:08:36,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257809172] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:36,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:36,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-21 00:08:36,636 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-21 00:08:36,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [456371665] [2022-03-21 00:08:36,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [456371665] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-21 00:08:36,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-21 00:08:36,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-21 00:08:36,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729770723] [2022-03-21 00:08:36,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-21 00:08:36,637 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-21 00:08:36,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-21 00:08:36,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-21 00:08:36,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-21 00:08:36,638 INFO L87 Difference]: Start difference. First operand 993 states and 1383 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5)