/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 05:42:38,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 05:42:38,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 05:42:38,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 05:42:38,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 05:42:38,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 05:42:38,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 05:42:38,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 05:42:38,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 05:42:38,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 05:42:38,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 05:42:38,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 05:42:38,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 05:42:38,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 05:42:38,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 05:42:38,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 05:42:38,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 05:42:38,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 05:42:38,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 05:42:38,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 05:42:38,126 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 05:42:38,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 05:42:38,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 05:42:38,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 05:42:38,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 05:42:38,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 05:42:38,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 05:42:38,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 05:42:38,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 05:42:38,140 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-18 05:42:38,146 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 05:42:38,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 05:42:38,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 05:42:38,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 05:42:38,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 05:42:38,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 05:42:38,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 05:42:38,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 05:42:38,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 05:42:38,148 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 05:42:38,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 05:42:38,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 05:42:38,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 05:42:38,148 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 05:42:38,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 05:42:38,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 05:42:38,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 05:42:38,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 05:42:38,149 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 05:42:38,149 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 05:42:38,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 05:42:38,149 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 05:42:38,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 05:42:38,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 05:42:38,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 05:42:38,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 05:42:38,402 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 05:42:38,403 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 05:42:38,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-03-18 05:42:38,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bb6ecd84/ccdd3f3e8c9f4036b0f09ee55b10b1cd/FLAG9bad3b3d0 [2022-03-18 05:42:39,074 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 05:42:39,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-03-18 05:42:39,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bb6ecd84/ccdd3f3e8c9f4036b0f09ee55b10b1cd/FLAG9bad3b3d0 [2022-03-18 05:42:39,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bb6ecd84/ccdd3f3e8c9f4036b0f09ee55b10b1cd [2022-03-18 05:42:39,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 05:42:39,484 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 05:42:39,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 05:42:39,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 05:42:39,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 05:42:39,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:42:39" (1/1) ... [2022-03-18 05:42:39,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@652701b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:42:39, skipping insertion in model container [2022-03-18 05:42:39,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:42:39" (1/1) ... [2022-03-18 05:42:39,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 05:42:39,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 05:42:40,057 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c[76734,76747] [2022-03-18 05:42:40,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 05:42:40,456 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 05:42:40,517 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c[76734,76747] [2022-03-18 05:42:40,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 05:42:40,757 INFO L208 MainTranslator]: Completed translation [2022-03-18 05:42:40,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:42:40 WrapperNode [2022-03-18 05:42:40,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 05:42:40,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 05:42:40,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 05:42:40,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 05:42:40,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:42:40" (1/1) ... [2022-03-18 05:42:40,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:42:40" (1/1) ... [2022-03-18 05:42:40,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:42:40" (1/1) ... [2022-03-18 05:42:40,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:42:40" (1/1) ... [2022-03-18 05:42:40,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:42:40" (1/1) ... [2022-03-18 05:42:40,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:42:40" (1/1) ... [2022-03-18 05:42:40,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:42:40" (1/1) ... [2022-03-18 05:42:41,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 05:42:41,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 05:42:41,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 05:42:41,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 05:42:41,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:42:40" (1/1) ... [2022-03-18 05:42:41,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 05:42:41,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:42:41,069 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) [2022-03-18 05:42:41,091 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 [2022-03-18 05:42:41,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 05:42:41,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 05:42:41,101 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 05:42:41,102 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-03-18 05:42:41,102 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-18 05:42:41,102 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-18 05:42:41,102 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-03-18 05:42:41,102 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyUnload [2022-03-18 05:42:41,102 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyAddDevice [2022-03-18 05:42:41,102 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConfigCallBack [2022-03-18 05:42:41,102 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-03-18 05:42:41,102 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-03-18 05:42:41,103 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-03-18 05:42:41,103 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-03-18 05:42:41,103 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-03-18 05:42:41,104 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-03-18 05:42:41,104 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-03-18 05:42:41,104 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPower [2022-03-18 05:42:41,104 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyReadWrite [2022-03-18 05:42:41,104 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInterpretError [2022-03-18 05:42:41,104 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFinishOperation [2022-03-18 05:42:41,104 INFO L138 BoogieDeclarations]: Found implementation of procedure FlStartDrive [2022-03-18 05:42:41,104 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDatarateSpecifyConfigure [2022-03-18 05:42:41,104 INFO L138 BoogieDeclarations]: Found implementation of procedure FlRecalibrateDrive [2022-03-18 05:42:41,104 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDetermineMediaType [2022-03-18 05:42:41,104 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAllocateIoBuffer [2022-03-18 05:42:41,104 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFreeIoBuffer [2022-03-18 05:42:41,105 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyThread [2022-03-18 05:42:41,105 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConsolidateMediaTypeWithBootSector [2022-03-18 05:42:41,105 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckBootSector [2022-03-18 05:42:41,105 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWriteTrack [2022-03-18 05:42:41,105 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWrite [2022-03-18 05:42:41,105 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFormat [2022-03-18 05:42:41,105 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-03-18 05:42:41,105 INFO L138 BoogieDeclarations]: Found implementation of procedure FlIssueCommand [2022-03-18 05:42:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInitializeControllerHardware [2022-03-18 05:42:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-03-18 05:42:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure FlHdbit [2022-03-18 05:42:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-03-18 05:42:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCancelQueuedRequest [2022-03-18 05:42:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-03-18 05:42:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-18 05:42:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 05:42:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-03-18 05:42:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-03-18 05:42:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-03-18 05:42:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-03-18 05:42:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-03-18 05:42:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-03-18 05:42:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-03-18 05:42:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-03-18 05:42:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-03-18 05:42:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-03-18 05:42:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-18 05:42:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-03-18 05:42:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-03-18 05:42:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-03-18 05:42:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-18 05:42:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-03-18 05:42:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-03-18 05:42:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-03-18 05:42:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-03-18 05:42:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-18 05:42:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-18 05:42:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-03-18 05:42:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-18 05:42:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-03-18 05:42:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-18 05:42:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-18 05:42:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-18 05:42:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-03-18 05:42:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-03-18 05:42:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-03-18 05:42:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-03-18 05:42:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-03-18 05:42:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-03-18 05:42:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-18 05:42:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-18 05:42:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-03-18 05:42:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-03-18 05:42:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-03-18 05:42:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-03-18 05:42:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-03-18 05:42:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-03-18 05:42:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-18 05:42:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-03-18 05:42:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-18 05:42:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-03-18 05:42:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-18 05:42:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-03-18 05:42:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-03-18 05:42:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-03-18 05:42:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-03-18 05:42:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-03-18 05:42:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-03-18 05:42:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-03-18 05:42:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-03-18 05:42:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-03-18 05:42:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-18 05:42:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-03-18 05:42:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-18 05:42:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-03-18 05:42:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 05:42:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 05:42:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 05:42:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 05:42:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-18 05:42:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 05:42:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-18 05:42:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2022-03-18 05:42:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-03-18 05:42:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-18 05:42:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-03-18 05:42:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-03-18 05:42:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-03-18 05:42:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-03-18 05:42:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-03-18 05:42:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-03-18 05:42:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-03-18 05:42:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-03-18 05:42:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-03-18 05:42:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-03-18 05:42:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-03-18 05:42:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 05:42:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 05:42:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-03-18 05:42:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-18 05:42:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-03-18 05:42:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-03-18 05:42:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-03-18 05:42:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-18 05:42:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-03-18 05:42:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-03-18 05:42:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-03-18 05:42:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-03-18 05:42:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-03-18 05:42:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-03-18 05:42:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-03-18 05:42:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-03-18 05:42:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-03-18 05:42:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-03-18 05:42:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-03-18 05:42:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-03-18 05:42:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-03-18 05:42:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-03-18 05:42:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-18 05:42:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-03-18 05:42:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-03-18 05:42:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-03-18 05:42:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-03-18 05:42:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-18 05:42:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-18 05:42:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-18 05:42:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-03-18 05:42:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-03-18 05:42:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-03-18 05:42:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-18 05:42:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-03-18 05:42:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-03-18 05:42:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-03-18 05:42:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-03-18 05:42:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-18 05:42:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-03-18 05:42:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-03-18 05:42:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-18 05:42:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-18 05:42:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-18 05:42:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-03-18 05:42:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-18 05:42:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-03-18 05:42:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-18 05:42:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-03-18 05:42:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyUnload [2022-03-18 05:42:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure FlConfigCallBack [2022-03-18 05:42:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure FlInitializeControllerHardware [2022-03-18 05:42:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-03-18 05:42:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-03-18 05:42:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyReadWrite [2022-03-18 05:42:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure FlRecalibrateDrive [2022-03-18 05:42:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure FlDatarateSpecifyConfigure [2022-03-18 05:42:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure FlStartDrive [2022-03-18 05:42:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure FlFinishOperation [2022-03-18 05:42:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure FlDetermineMediaType [2022-03-18 05:42:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyThread [2022-03-18 05:42:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWrite [2022-03-18 05:42:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure FlFormat [2022-03-18 05:42:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure FlIssueCommand [2022-03-18 05:42:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-03-18 05:42:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-03-18 05:42:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure FlInterpretError [2022-03-18 05:42:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure FlAllocateIoBuffer [2022-03-18 05:42:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure FlFreeIoBuffer [2022-03-18 05:42:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure FlConsolidateMediaTypeWithBootSector [2022-03-18 05:42:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckBootSector [2022-03-18 05:42:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWriteTrack [2022-03-18 05:42:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-03-18 05:42:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyAddDevice [2022-03-18 05:42:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-03-18 05:42:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPower [2022-03-18 05:42:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-03-18 05:42:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-03-18 05:42:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-03-18 05:42:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-03-18 05:42:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCancelQueuedRequest [2022-03-18 05:42:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-03-18 05:42:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure FlHdbit [2022-03-18 05:42:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-18 05:42:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-18 05:42:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-18 05:42:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-18 05:42:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-18 05:42:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-18 05:42:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-18 05:42:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 05:42:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-18 05:42:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-03-18 05:42:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-03-18 05:42:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-18 05:42:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 05:42:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-18 05:42:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-03-18 05:42:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 05:42:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 05:42:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 05:42:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-18 05:42:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-18 05:42:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-18 05:42:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-18 05:42:41,749 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 05:42:41,754 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 05:42:41,789 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:41,830 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:42:41,831 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:42:41,831 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:41,839 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:42:41,839 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:42:43,842 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:43,847 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:42:43,847 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:42:43,847 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:43,853 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:42:43,854 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:42:43,856 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:43,862 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:42:43,862 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:42:43,891 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:43,896 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:42:43,896 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:42:43,896 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:43,903 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:42:43,903 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:42:43,903 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:43,910 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:42:43,910 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:42:43,951 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:43,995 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-03-18 05:42:43,995 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-03-18 05:42:44,048 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:44,053 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:42:44,053 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:42:44,054 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:44,057 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:42:44,057 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:42:44,058 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:44,064 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:42:44,064 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:42:44,073 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:44,077 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:42:44,078 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:42:44,078 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:44,081 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:42:44,081 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:42:51,667 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:51,682 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-18 05:42:51,682 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-18 05:42:51,719 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:52,030 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-03-18 05:42:52,030 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-03-18 05:42:52,289 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:52,292 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:42:52,292 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:42:52,347 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:52,375 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-03-18 05:42:52,375 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-03-18 05:42:52,377 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:52,486 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-18 05:42:52,487 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-18 05:42:52,487 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:42:52,531 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-03-18 05:42:52,531 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-03-18 05:43:02,527 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:43:02,530 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:43:02,530 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:43:02,714 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:43:02,717 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:43:02,717 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:43:02,732 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:43:05,005 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-03-18 05:43:05,005 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-03-18 05:43:05,048 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:43:05,276 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-03-18 05:43:05,277 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-03-18 05:43:05,278 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:43:05,293 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-18 05:43:05,294 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-18 05:43:05,294 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:43:05,323 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-18 05:43:05,324 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-18 05:43:05,326 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:43:05,334 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-18 05:43:05,335 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-18 05:43:05,366 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:43:05,370 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:43:05,370 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:43:05,379 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:43:05,384 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:43:05,384 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:43:05,395 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:43:05,487 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2022-03-18 05:43:05,488 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2022-03-18 05:43:05,530 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:43:07,891 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-03-18 05:43:07,891 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-03-18 05:43:07,973 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 05:43:07,992 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 05:43:07,992 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-03-18 05:43:07,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:43:07 BoogieIcfgContainer [2022-03-18 05:43:07,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 05:43:07,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 05:43:07,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 05:43:07,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 05:43:07,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 05:42:39" (1/3) ... [2022-03-18 05:43:07,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1630b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:43:07, skipping insertion in model container [2022-03-18 05:43:07,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:42:40" (2/3) ... [2022-03-18 05:43:08,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1630b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:43:07, skipping insertion in model container [2022-03-18 05:43:08,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:43:07" (3/3) ... [2022-03-18 05:43:08,002 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2022-03-18 05:43:08,007 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 05:43:08,007 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 05:43:08,043 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 05:43:08,048 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 [2022-03-18 05:43:08,048 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 05:43:08,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 1449 states, 1151 states have (on average 1.523023457862728) internal successors, (1753), 1192 states have internal predecessors, (1753), 221 states have call successors, (221), 72 states have call predecessors, (221), 72 states have return successors, (221), 215 states have call predecessors, (221), 221 states have call successors, (221) [2022-03-18 05:43:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-18 05:43:08,094 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:43:08,094 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:43:08,095 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:43:08,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:43:08,099 INFO L85 PathProgramCache]: Analyzing trace with hash 760330439, now seen corresponding path program 1 times [2022-03-18 05:43:08,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:43:08,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [930101675] [2022-03-18 05:43:08,112 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:43:08,112 INFO L85 PathProgramCache]: Analyzing trace with hash 760330439, now seen corresponding path program 2 times [2022-03-18 05:43:08,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:43:08,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586134053] [2022-03-18 05:43:08,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:43:08,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:43:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:08,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:43:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:08,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:43:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:08,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:43:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:08,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:43:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:08,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:43:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:43:08,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:43:08,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586134053] [2022-03-18 05:43:08,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586134053] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:43:08,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:43:08,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:43:08,990 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:43:08,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [930101675] [2022-03-18 05:43:08,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [930101675] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:43:08,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:43:08,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:43:08,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515920215] [2022-03-18 05:43:08,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:43:08,995 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:43:08,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:43:09,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:43:09,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:43:09,022 INFO L87 Difference]: Start difference. First operand has 1449 states, 1151 states have (on average 1.523023457862728) internal successors, (1753), 1192 states have internal predecessors, (1753), 221 states have call successors, (221), 72 states have call predecessors, (221), 72 states have return successors, (221), 215 states have call predecessors, (221), 221 states have call successors, (221) Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 05:43:13,577 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 [] [2022-03-18 05:43:18,051 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 [] [2022-03-18 05:43:18,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:43:18,967 INFO L93 Difference]: Finished difference Result 1399 states and 2144 transitions. [2022-03-18 05:43:18,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 05:43:18,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-03-18 05:43:18,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:43:18,990 INFO L225 Difference]: With dead ends: 1399 [2022-03-18 05:43:18,990 INFO L226 Difference]: Without dead ends: 833 [2022-03-18 05:43:19,004 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:43:19,007 INFO L912 BasicCegarLoop]: 728 mSDtfsCounter, 1822 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 917 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 3355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:43:19,007 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1850 Valid, 1207 Invalid, 3355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 2436 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2022-03-18 05:43:19,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-03-18 05:43:19,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 651. [2022-03-18 05:43:19,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 491 states have (on average 1.4256619144602851) internal successors, (700), 523 states have internal predecessors, (700), 115 states have call successors, (115), 46 states have call predecessors, (115), 44 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-03-18 05:43:19,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 906 transitions. [2022-03-18 05:43:19,216 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 906 transitions. Word has length 37 [2022-03-18 05:43:19,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:43:19,216 INFO L478 AbstractCegarLoop]: Abstraction has 651 states and 906 transitions. [2022-03-18 05:43:19,216 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 05:43:19,216 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 906 transitions. [2022-03-18 05:43:19,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-18 05:43:19,217 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:43:19,217 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:43:19,218 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 05:43:19,218 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:43:19,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:43:19,218 INFO L85 PathProgramCache]: Analyzing trace with hash -2031942295, now seen corresponding path program 1 times [2022-03-18 05:43:19,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:43:19,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [532165393] [2022-03-18 05:43:19,219 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:43:19,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2031942295, now seen corresponding path program 2 times [2022-03-18 05:43:19,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:43:19,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996574962] [2022-03-18 05:43:19,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:43:19,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:43:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:19,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:43:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:19,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:43:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:19,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:43:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:19,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:43:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:19,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:43:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:19,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 05:43:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:43:19,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:43:19,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996574962] [2022-03-18 05:43:19,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996574962] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:43:19,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:43:19,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:43:19,716 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:43:19,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [532165393] [2022-03-18 05:43:19,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [532165393] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:43:19,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:43:19,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:43:19,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885943055] [2022-03-18 05:43:19,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:43:19,718 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:43:19,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:43:19,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:43:19,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:43:19,718 INFO L87 Difference]: Start difference. First operand 651 states and 906 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:43:26,063 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 [] [2022-03-18 05:43:28,953 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 [] [2022-03-18 05:43:32,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:43:32,419 INFO L93 Difference]: Finished difference Result 1886 states and 2773 transitions. [2022-03-18 05:43:32,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 05:43:32,420 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2022-03-18 05:43:32,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:43:32,427 INFO L225 Difference]: With dead ends: 1886 [2022-03-18 05:43:32,427 INFO L226 Difference]: Without dead ends: 1423 [2022-03-18 05:43:32,429 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-18 05:43:32,430 INFO L912 BasicCegarLoop]: 924 mSDtfsCounter, 2981 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 3573 mSolverCounterSat, 1111 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3019 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 4686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1111 IncrementalHoareTripleChecker+Valid, 3573 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:43:32,430 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3019 Valid, 1637 Invalid, 4686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1111 Valid, 3573 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2022-03-18 05:43:32,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-03-18 05:43:32,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1195. [2022-03-18 05:43:32,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 925 states have (on average 1.4086486486486487) internal successors, (1303), 956 states have internal predecessors, (1303), 177 states have call successors, (177), 79 states have call predecessors, (177), 92 states have return successors, (237), 169 states have call predecessors, (237), 161 states have call successors, (237) [2022-03-18 05:43:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1717 transitions. [2022-03-18 05:43:32,563 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1717 transitions. Word has length 42 [2022-03-18 05:43:32,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:43:32,564 INFO L478 AbstractCegarLoop]: Abstraction has 1195 states and 1717 transitions. [2022-03-18 05:43:32,564 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:43:32,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1717 transitions. [2022-03-18 05:43:32,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-18 05:43:32,566 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:43:32,566 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:43:32,566 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 05:43:32,566 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:43:32,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:43:32,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2071284277, now seen corresponding path program 1 times [2022-03-18 05:43:32,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:43:32,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1985697318] [2022-03-18 05:43:32,567 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:43:32,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2071284277, now seen corresponding path program 2 times [2022-03-18 05:43:32,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:43:32,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494336622] [2022-03-18 05:43:32,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:43:32,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:43:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:32,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:43:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:32,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:43:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:33,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:43:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:33,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:43:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:33,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:43:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:33,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 05:43:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:33,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 05:43:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:33,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:43:33,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:43:33,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494336622] [2022-03-18 05:43:33,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494336622] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:43:33,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:43:33,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:43:33,183 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:43:33,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1985697318] [2022-03-18 05:43:33,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1985697318] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:43:33,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:43:33,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:43:33,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116104239] [2022-03-18 05:43:33,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:43:33,184 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:43:33,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:43:33,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:43:33,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:43:33,187 INFO L87 Difference]: Start difference. First operand 1195 states and 1717 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:43:40,102 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 [] [2022-03-18 05:43:43,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:43:43,562 INFO L93 Difference]: Finished difference Result 2186 states and 3260 transitions. [2022-03-18 05:43:43,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 05:43:43,567 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2022-03-18 05:43:43,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:43:43,580 INFO L225 Difference]: With dead ends: 2186 [2022-03-18 05:43:43,580 INFO L226 Difference]: Without dead ends: 2168 [2022-03-18 05:43:43,582 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-18 05:43:43,588 INFO L912 BasicCegarLoop]: 720 mSDtfsCounter, 2910 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 991 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 4400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 991 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:43:43,589 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2966 Valid, 1372 Invalid, 4400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [991 Valid, 3408 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2022-03-18 05:43:43,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2022-03-18 05:43:43,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 1838. [2022-03-18 05:43:43,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1435 states have (on average 1.427177700348432) internal successors, (2048), 1486 states have internal predecessors, (2048), 261 states have call successors, (261), 121 states have call predecessors, (261), 141 states have return successors, (375), 244 states have call predecessors, (375), 245 states have call successors, (375) [2022-03-18 05:43:43,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2684 transitions. [2022-03-18 05:43:43,808 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2684 transitions. Word has length 54 [2022-03-18 05:43:43,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:43:43,808 INFO L478 AbstractCegarLoop]: Abstraction has 1838 states and 2684 transitions. [2022-03-18 05:43:43,808 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:43:43,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2684 transitions. [2022-03-18 05:43:43,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 05:43:43,810 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:43:43,810 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:43:43,810 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 05:43:43,811 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:43:43,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:43:43,811 INFO L85 PathProgramCache]: Analyzing trace with hash 546834136, now seen corresponding path program 1 times [2022-03-18 05:43:43,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:43:43,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [347176247] [2022-03-18 05:43:43,811 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:43:43,812 INFO L85 PathProgramCache]: Analyzing trace with hash 546834136, now seen corresponding path program 2 times [2022-03-18 05:43:43,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:43:43,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529747444] [2022-03-18 05:43:43,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:43:43,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:43:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:44,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:43:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:44,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:43:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:44,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:43:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:44,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:43:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:44,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:43:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:44,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 05:43:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:43:44,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:43:44,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529747444] [2022-03-18 05:43:44,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529747444] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:43:44,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:43:44,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:43:44,310 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:43:44,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [347176247] [2022-03-18 05:43:44,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [347176247] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:43:44,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:43:44,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:43:44,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085504584] [2022-03-18 05:43:44,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:43:44,311 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:43:44,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:43:44,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:43:44,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:43:44,312 INFO L87 Difference]: Start difference. First operand 1838 states and 2684 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:43:50,955 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 [] [2022-03-18 05:43:56,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:43:56,036 INFO L93 Difference]: Finished difference Result 3657 states and 5559 transitions. [2022-03-18 05:43:56,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 05:43:56,040 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-03-18 05:43:56,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:43:56,074 INFO L225 Difference]: With dead ends: 3657 [2022-03-18 05:43:56,074 INFO L226 Difference]: Without dead ends: 3654 [2022-03-18 05:43:56,076 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-18 05:43:56,078 INFO L912 BasicCegarLoop]: 1116 mSDtfsCounter, 2060 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 4323 mSolverCounterSat, 837 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 5161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 837 IncrementalHoareTripleChecker+Valid, 4323 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:43:56,079 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2100 Valid, 1845 Invalid, 5161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [837 Valid, 4323 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2022-03-18 05:43:56,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-03-18 05:43:56,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 2949. [2022-03-18 05:43:56,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2337 states have (on average 1.4394522892597348) internal successors, (3364), 2396 states have internal predecessors, (3364), 382 states have call successors, (382), 202 states have call predecessors, (382), 229 states have return successors, (577), 364 states have call predecessors, (577), 366 states have call successors, (577) [2022-03-18 05:43:56,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4323 transitions. [2022-03-18 05:43:56,485 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4323 transitions. Word has length 55 [2022-03-18 05:43:56,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:43:56,486 INFO L478 AbstractCegarLoop]: Abstraction has 2949 states and 4323 transitions. [2022-03-18 05:43:56,486 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:43:56,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4323 transitions. [2022-03-18 05:43:56,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 05:43:56,489 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:43:56,489 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:43:56,489 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-18 05:43:56,489 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:43:56,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:43:56,489 INFO L85 PathProgramCache]: Analyzing trace with hash -893598350, now seen corresponding path program 1 times [2022-03-18 05:43:56,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:43:56,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [182442109] [2022-03-18 05:43:56,490 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:43:56,490 INFO L85 PathProgramCache]: Analyzing trace with hash -893598350, now seen corresponding path program 2 times [2022-03-18 05:43:56,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:43:56,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626878035] [2022-03-18 05:43:56,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:43:56,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:43:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:56,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:43:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:56,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:43:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:56,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:43:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:56,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:43:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:56,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:43:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:56,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 05:43:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:43:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:43:56,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:43:56,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626878035] [2022-03-18 05:43:56,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626878035] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:43:56,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:43:56,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:43:56,955 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:43:56,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [182442109] [2022-03-18 05:43:56,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [182442109] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:43:56,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:43:56,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:43:56,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744127383] [2022-03-18 05:43:56,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:43:56,956 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:43:56,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:43:56,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:43:56,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:43:56,956 INFO L87 Difference]: Start difference. First operand 2949 states and 4323 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:44:03,327 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 [] [2022-03-18 05:44:04,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:44:04,850 INFO L93 Difference]: Finished difference Result 3468 states and 5241 transitions. [2022-03-18 05:44:04,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 05:44:04,850 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-03-18 05:44:04,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:44:04,863 INFO L225 Difference]: With dead ends: 3468 [2022-03-18 05:44:04,863 INFO L226 Difference]: Without dead ends: 3464 [2022-03-18 05:44:04,865 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-03-18 05:44:04,866 INFO L912 BasicCegarLoop]: 709 mSDtfsCounter, 1926 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 783 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:44:04,866 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 1233 Invalid, 3223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 2439 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-03-18 05:44:04,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-03-18 05:44:05,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 2974. [2022-03-18 05:44:05,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2363 states have (on average 1.4401184934405418) internal successors, (3403), 2418 states have internal predecessors, (3403), 381 states have call successors, (381), 202 states have call predecessors, (381), 229 states have return successors, (575), 365 states have call predecessors, (575), 365 states have call successors, (575) [2022-03-18 05:44:05,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4359 transitions. [2022-03-18 05:44:05,295 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4359 transitions. Word has length 55 [2022-03-18 05:44:05,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:44:05,296 INFO L478 AbstractCegarLoop]: Abstraction has 2974 states and 4359 transitions. [2022-03-18 05:44:05,296 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:44:05,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4359 transitions. [2022-03-18 05:44:05,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-18 05:44:05,297 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:44:05,297 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:44:05,297 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-18 05:44:05,297 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:44:05,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:44:05,298 INFO L85 PathProgramCache]: Analyzing trace with hash 494864556, now seen corresponding path program 1 times [2022-03-18 05:44:05,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:44:05,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [975015609] [2022-03-18 05:44:05,298 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:44:05,298 INFO L85 PathProgramCache]: Analyzing trace with hash 494864556, now seen corresponding path program 2 times [2022-03-18 05:44:05,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:44:05,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404068409] [2022-03-18 05:44:05,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:44:05,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:44:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:05,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:44:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:05,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:44:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:05,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:44:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:05,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:44:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:05,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:44:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:05,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 05:44:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:05,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-18 05:44:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:05,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:44:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:44:05,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:44:05,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404068409] [2022-03-18 05:44:05,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404068409] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:44:05,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:44:05,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:44:05,842 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:44:05,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [975015609] [2022-03-18 05:44:05,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [975015609] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:44:05,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:44:05,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:44:05,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532584858] [2022-03-18 05:44:05,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:44:05,843 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 05:44:05,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:44:05,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 05:44:05,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:44:05,844 INFO L87 Difference]: Start difference. First operand 2974 states and 4359 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:44:13,785 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 [] [2022-03-18 05:44:18,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:44:18,970 INFO L93 Difference]: Finished difference Result 4254 states and 6463 transitions. [2022-03-18 05:44:18,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-18 05:44:18,970 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2022-03-18 05:44:18,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:44:18,985 INFO L225 Difference]: With dead ends: 4254 [2022-03-18 05:44:18,985 INFO L226 Difference]: Without dead ends: 4246 [2022-03-18 05:44:18,987 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-03-18 05:44:18,988 INFO L912 BasicCegarLoop]: 1005 mSDtfsCounter, 3486 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 5609 mSolverCounterSat, 1605 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3536 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 7215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1605 IncrementalHoareTripleChecker+Valid, 5609 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-03-18 05:44:18,988 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3536 Valid, 1903 Invalid, 7215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1605 Valid, 5609 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-03-18 05:44:18,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2022-03-18 05:44:19,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 3598. [2022-03-18 05:44:19,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 2861 states have (on average 1.4435512058720728) internal successors, (4130), 2928 states have internal predecessors, (4130), 458 states have call successors, (458), 238 states have call predecessors, (458), 278 states have return successors, (709), 449 states have call predecessors, (709), 442 states have call successors, (709) [2022-03-18 05:44:19,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5297 transitions. [2022-03-18 05:44:19,520 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5297 transitions. Word has length 56 [2022-03-18 05:44:19,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:44:19,520 INFO L478 AbstractCegarLoop]: Abstraction has 3598 states and 5297 transitions. [2022-03-18 05:44:19,520 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:44:19,520 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5297 transitions. [2022-03-18 05:44:19,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-18 05:44:19,521 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:44:19,521 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:44:19,521 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-18 05:44:19,522 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:44:19,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:44:19,522 INFO L85 PathProgramCache]: Analyzing trace with hash -582745306, now seen corresponding path program 1 times [2022-03-18 05:44:19,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:44:19,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [76194301] [2022-03-18 05:44:19,522 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:44:19,523 INFO L85 PathProgramCache]: Analyzing trace with hash -582745306, now seen corresponding path program 2 times [2022-03-18 05:44:19,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:44:19,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344097543] [2022-03-18 05:44:19,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:44:19,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:44:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:19,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:44:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:19,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:44:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:19,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:44:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:19,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:44:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:19,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:44:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:19,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 05:44:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:19,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 05:44:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:44:19,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:44:19,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344097543] [2022-03-18 05:44:19,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344097543] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:44:19,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:44:19,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:44:19,972 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:44:19,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [76194301] [2022-03-18 05:44:19,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [76194301] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:44:19,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:44:19,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:44:19,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378545747] [2022-03-18 05:44:19,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:44:19,972 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:44:19,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:44:19,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:44:19,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:44:19,973 INFO L87 Difference]: Start difference. First operand 3598 states and 5297 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:44:24,179 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 [] [2022-03-18 05:44:27,824 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 [] [2022-03-18 05:44:32,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:44:32,667 INFO L93 Difference]: Finished difference Result 11208 states and 17196 transitions. [2022-03-18 05:44:32,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 05:44:32,668 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2022-03-18 05:44:32,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:44:32,702 INFO L225 Difference]: With dead ends: 11208 [2022-03-18 05:44:32,702 INFO L226 Difference]: Without dead ends: 7864 [2022-03-18 05:44:32,714 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-18 05:44:32,714 INFO L912 BasicCegarLoop]: 893 mSDtfsCounter, 3290 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 3251 mSolverCounterSat, 1246 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3364 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 4499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1246 IncrementalHoareTripleChecker+Valid, 3251 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:44:32,714 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3364 Valid, 1587 Invalid, 4499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1246 Valid, 3251 Invalid, 2 Unknown, 0 Unchecked, 10.5s Time] [2022-03-18 05:44:32,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7864 states. [2022-03-18 05:44:33,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7864 to 6946. [2022-03-18 05:44:33,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 5542 states have (on average 1.453446409238542) internal successors, (8055), 5692 states have internal predecessors, (8055), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 05:44:33,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 10479 transitions. [2022-03-18 05:44:33,778 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 10479 transitions. Word has length 57 [2022-03-18 05:44:33,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:44:33,778 INFO L478 AbstractCegarLoop]: Abstraction has 6946 states and 10479 transitions. [2022-03-18 05:44:33,779 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:44:33,779 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 10479 transitions. [2022-03-18 05:44:33,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-18 05:44:33,780 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:44:33,780 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:44:33,780 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-18 05:44:33,780 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:44:33,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:44:33,780 INFO L85 PathProgramCache]: Analyzing trace with hash -466129244, now seen corresponding path program 1 times [2022-03-18 05:44:33,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:44:33,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [698406953] [2022-03-18 05:44:33,781 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:44:33,781 INFO L85 PathProgramCache]: Analyzing trace with hash -466129244, now seen corresponding path program 2 times [2022-03-18 05:44:33,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:44:33,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191225232] [2022-03-18 05:44:33,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:44:33,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:44:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:34,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:44:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:34,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:44:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:34,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:44:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:34,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:44:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:34,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:44:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:34,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 05:44:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:34,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:44:34,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:44:34,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191225232] [2022-03-18 05:44:34,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191225232] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:44:34,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:44:34,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:44:34,262 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:44:34,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [698406953] [2022-03-18 05:44:34,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [698406953] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:44:34,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:44:34,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:44:34,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578142689] [2022-03-18 05:44:34,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:44:34,263 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:44:34,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:44:34,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:44:34,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:44:34,264 INFO L87 Difference]: Start difference. First operand 6946 states and 10479 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 05:44:39,597 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 [] [2022-03-18 05:44:43,484 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:48,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:44:53,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:44:53,644 INFO L93 Difference]: Finished difference Result 14677 states and 22415 transitions. [2022-03-18 05:44:53,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-18 05:44:53,646 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-03-18 05:44:53,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:44:53,679 INFO L225 Difference]: With dead ends: 14677 [2022-03-18 05:44:53,679 INFO L226 Difference]: Without dead ends: 8095 [2022-03-18 05:44:53,701 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-03-18 05:44:53,702 INFO L912 BasicCegarLoop]: 899 mSDtfsCounter, 5146 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 5508 mSolverCounterSat, 2192 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5190 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 7703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2192 IncrementalHoareTripleChecker+Valid, 5508 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:44:53,702 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [5190 Valid, 1785 Invalid, 7703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2192 Valid, 5508 Invalid, 3 Unknown, 0 Unchecked, 15.7s Time] [2022-03-18 05:44:53,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8095 states. [2022-03-18 05:44:54,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8095 to 6937. [2022-03-18 05:44:54,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.452015181637448) internal successors, (8034), 5683 states have internal predecessors, (8034), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 05:44:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10458 transitions. [2022-03-18 05:44:54,854 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10458 transitions. Word has length 56 [2022-03-18 05:44:54,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:44:54,855 INFO L478 AbstractCegarLoop]: Abstraction has 6937 states and 10458 transitions. [2022-03-18 05:44:54,855 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 05:44:54,855 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10458 transitions. [2022-03-18 05:44:54,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-18 05:44:54,856 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:44:54,856 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:44:54,856 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-18 05:44:54,856 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:44:54,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:44:54,856 INFO L85 PathProgramCache]: Analyzing trace with hash 613167468, now seen corresponding path program 1 times [2022-03-18 05:44:54,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:44:54,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1940768119] [2022-03-18 05:44:54,857 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:44:54,857 INFO L85 PathProgramCache]: Analyzing trace with hash 613167468, now seen corresponding path program 2 times [2022-03-18 05:44:54,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:44:54,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32743117] [2022-03-18 05:44:54,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:44:54,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:44:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:55,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:44:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:55,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:44:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:55,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:44:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:55,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:44:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:55,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:44:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:55,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 05:44:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:55,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 05:44:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:55,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:44:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:44:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:44:55,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:44:55,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32743117] [2022-03-18 05:44:55,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32743117] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:44:55,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:44:55,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:44:55,332 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:44:55,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1940768119] [2022-03-18 05:44:55,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1940768119] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:44:55,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:44:55,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:44:55,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705925461] [2022-03-18 05:44:55,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:44:55,333 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 05:44:55,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:44:55,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 05:44:55,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:44:55,334 INFO L87 Difference]: Start difference. First operand 6937 states and 10458 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:45:02,540 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:06,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:10,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:45:10,983 INFO L93 Difference]: Finished difference Result 7820 states and 12070 transitions. [2022-03-18 05:45:10,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-18 05:45:10,984 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-03-18 05:45:10,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:45:11,008 INFO L225 Difference]: With dead ends: 7820 [2022-03-18 05:45:11,009 INFO L226 Difference]: Without dead ends: 7815 [2022-03-18 05:45:11,013 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-03-18 05:45:11,013 INFO L912 BasicCegarLoop]: 988 mSDtfsCounter, 3648 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 4722 mSolverCounterSat, 1702 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3700 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 6426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1702 IncrementalHoareTripleChecker+Valid, 4722 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:45:11,013 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3700 Valid, 1777 Invalid, 6426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1702 Valid, 4722 Invalid, 2 Unknown, 0 Unchecked, 12.1s Time] [2022-03-18 05:45:11,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7815 states. [2022-03-18 05:45:12,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7815 to 6937. [2022-03-18 05:45:12,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.4518344478583047) internal successors, (8033), 5683 states have internal predecessors, (8033), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 05:45:12,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10457 transitions. [2022-03-18 05:45:12,195 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10457 transitions. Word has length 58 [2022-03-18 05:45:12,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:45:12,196 INFO L478 AbstractCegarLoop]: Abstraction has 6937 states and 10457 transitions. [2022-03-18 05:45:12,196 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:45:12,196 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10457 transitions. [2022-03-18 05:45:12,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-18 05:45:12,197 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:45:12,197 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:45:12,197 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-18 05:45:12,198 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:45:12,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:45:12,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1929708227, now seen corresponding path program 1 times [2022-03-18 05:45:12,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:45:12,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [104592869] [2022-03-18 05:45:12,198 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:45:12,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1929708227, now seen corresponding path program 2 times [2022-03-18 05:45:12,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:45:12,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557240555] [2022-03-18 05:45:12,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:45:12,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:45:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:12,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:45:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:12,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:45:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:12,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:45:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:12,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:45:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:12,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:45:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:12,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 05:45:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:12,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-18 05:45:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:12,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:45:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:12,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:45:12,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:45:12,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557240555] [2022-03-18 05:45:12,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557240555] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:45:12,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:45:12,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:45:12,710 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:45:12,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [104592869] [2022-03-18 05:45:12,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [104592869] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:45:12,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:45:12,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:45:12,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132982971] [2022-03-18 05:45:12,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:45:12,711 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 05:45:12,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:45:12,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 05:45:12,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:45:12,712 INFO L87 Difference]: Start difference. First operand 6937 states and 10457 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:45:17,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:19,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:22,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:24,177 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:45:28,362 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 [] [2022-03-18 05:45:32,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:45:32,091 INFO L93 Difference]: Finished difference Result 14740 states and 22518 transitions. [2022-03-18 05:45:32,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 05:45:32,092 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-03-18 05:45:32,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:45:32,114 INFO L225 Difference]: With dead ends: 14740 [2022-03-18 05:45:32,114 INFO L226 Difference]: Without dead ends: 7831 [2022-03-18 05:45:32,133 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:45:32,134 INFO L912 BasicCegarLoop]: 699 mSDtfsCounter, 1906 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 4666 mSolverCounterSat, 822 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1938 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 5493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 822 IncrementalHoareTripleChecker+Valid, 4666 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:45:32,134 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1938 Valid, 1813 Invalid, 5493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [822 Valid, 4666 Invalid, 5 Unknown, 0 Unchecked, 17.2s Time] [2022-03-18 05:45:32,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7831 states. [2022-03-18 05:45:33,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7831 to 6937. [2022-03-18 05:45:33,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.4516537140791614) internal successors, (8032), 5683 states have internal predecessors, (8032), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 05:45:33,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10456 transitions. [2022-03-18 05:45:33,351 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10456 transitions. Word has length 58 [2022-03-18 05:45:33,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:45:33,351 INFO L478 AbstractCegarLoop]: Abstraction has 6937 states and 10456 transitions. [2022-03-18 05:45:33,352 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:45:33,352 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10456 transitions. [2022-03-18 05:45:33,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-18 05:45:33,353 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:45:33,353 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:45:33,353 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-18 05:45:33,353 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:45:33,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:45:33,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1708625388, now seen corresponding path program 1 times [2022-03-18 05:45:33,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:45:33,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [967879952] [2022-03-18 05:45:33,353 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:45:33,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1708625388, now seen corresponding path program 2 times [2022-03-18 05:45:33,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:45:33,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945733347] [2022-03-18 05:45:33,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:45:33,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:45:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:33,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:45:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:33,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:45:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:33,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:45:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:33,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:45:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:33,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:45:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:33,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 05:45:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:33,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 05:45:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:33,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:45:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:33,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:45:33,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:45:33,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945733347] [2022-03-18 05:45:33,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945733347] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:45:33,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:45:33,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:45:33,979 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:45:33,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [967879952] [2022-03-18 05:45:33,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [967879952] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:45:33,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:45:33,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:45:33,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489628157] [2022-03-18 05:45:33,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:45:33,979 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:45:33,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:45:33,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:45:33,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:45:33,980 INFO L87 Difference]: Start difference. First operand 6937 states and 10456 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:45:41,443 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 [] [2022-03-18 05:45:45,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:45:45,069 INFO L93 Difference]: Finished difference Result 14697 states and 22709 transitions. [2022-03-18 05:45:45,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-18 05:45:45,070 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-03-18 05:45:45,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:45:45,096 INFO L225 Difference]: With dead ends: 14697 [2022-03-18 05:45:45,096 INFO L226 Difference]: Without dead ends: 7729 [2022-03-18 05:45:45,124 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:45:45,125 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 1887 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 3883 mSolverCounterSat, 743 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 4627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 3883 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:45:45,125 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1917 Valid, 1662 Invalid, 4627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 3883 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-03-18 05:45:45,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7729 states. [2022-03-18 05:45:46,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7729 to 6958. [2022-03-18 05:45:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6958 states, 5554 states have (on average 1.4499459848757652) internal successors, (8053), 5704 states have internal predecessors, (8053), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 05:45:46,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6958 states to 6958 states and 10477 transitions. [2022-03-18 05:45:46,376 INFO L78 Accepts]: Start accepts. Automaton has 6958 states and 10477 transitions. Word has length 62 [2022-03-18 05:45:46,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:45:46,377 INFO L478 AbstractCegarLoop]: Abstraction has 6958 states and 10477 transitions. [2022-03-18 05:45:46,377 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:45:46,377 INFO L276 IsEmpty]: Start isEmpty. Operand 6958 states and 10477 transitions. [2022-03-18 05:45:46,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-18 05:45:46,379 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:45:46,379 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:45:46,379 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-18 05:45:46,379 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:45:46,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:45:46,380 INFO L85 PathProgramCache]: Analyzing trace with hash -427353988, now seen corresponding path program 1 times [2022-03-18 05:45:46,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:45:46,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [179024046] [2022-03-18 05:45:46,386 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:45:46,386 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:45:46,386 INFO L85 PathProgramCache]: Analyzing trace with hash -427353988, now seen corresponding path program 2 times [2022-03-18 05:45:46,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:45:46,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298588096] [2022-03-18 05:45:46,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:45:46,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:45:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:46,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:45:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:46,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:45:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:46,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:45:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:47,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 05:45:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:47,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:45:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:47,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-18 05:45:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:47,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-18 05:45:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:47,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:45:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:45:47,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:45:47,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:45:47,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298588096] [2022-03-18 05:45:47,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298588096] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:45:47,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864041475] [2022-03-18 05:45:47,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:45:47,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:45:47,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:45:47,193 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) [2022-03-18 05:45:47,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 05:45:52,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 05:45:52,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:45:52,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 05:45:52,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:45:52,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:45:52,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 05:45:52,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:45:52,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864041475] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 05:45:52,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 05:45:52,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 18 [2022-03-18 05:45:52,803 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:45:52,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [179024046] [2022-03-18 05:45:52,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [179024046] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:45:52,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:45:52,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:45:52,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499506627] [2022-03-18 05:45:52,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:45:52,804 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 05:45:52,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:45:52,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 05:45:52,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:45:52,805 INFO L87 Difference]: Start difference. First operand 6958 states and 10477 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:45:58,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:03,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:06,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:46:06,910 INFO L93 Difference]: Finished difference Result 14738 states and 22750 transitions. [2022-03-18 05:46:06,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 05:46:06,911 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2022-03-18 05:46:06,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:46:06,934 INFO L225 Difference]: With dead ends: 14738 [2022-03-18 05:46:06,935 INFO L226 Difference]: Without dead ends: 7750 [2022-03-18 05:46:06,955 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2022-03-18 05:46:06,956 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 2786 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 4111 mSolverCounterSat, 1217 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2816 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 5330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1217 IncrementalHoareTripleChecker+Valid, 4111 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:46:06,956 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2816 Valid, 1720 Invalid, 5330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1217 Valid, 4111 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2022-03-18 05:46:06,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2022-03-18 05:46:08,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 6979. [2022-03-18 05:46:08,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 5575 states have (on average 1.4482511210762332) internal successors, (8074), 5725 states have internal predecessors, (8074), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 05:46:08,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 10498 transitions. [2022-03-18 05:46:08,211 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 10498 transitions. Word has length 63 [2022-03-18 05:46:08,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:46:08,211 INFO L478 AbstractCegarLoop]: Abstraction has 6979 states and 10498 transitions. [2022-03-18 05:46:08,211 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:46:08,211 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 10498 transitions. [2022-03-18 05:46:08,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-18 05:46:08,212 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:46:08,212 INFO L500 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:46:08,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-18 05:46:08,423 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-18 05:46:08,423 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:46:08,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:46:08,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2076762092, now seen corresponding path program 3 times [2022-03-18 05:46:08,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:46:08,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1820406399] [2022-03-18 05:46:08,425 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:46:08,425 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:46:08,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2076762092, now seen corresponding path program 4 times [2022-03-18 05:46:08,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:46:08,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884472383] [2022-03-18 05:46:08,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:46:08,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:46:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:08,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:46:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:08,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:46:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:09,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-18 05:46:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:09,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:46:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:09,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:46:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:09,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-18 05:46:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:09,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 05:46:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:09,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:46:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:46:09,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:46:09,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884472383] [2022-03-18 05:46:09,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884472383] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:46:09,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119784482] [2022-03-18 05:46:09,211 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 05:46:09,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:46:09,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:46:09,223 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:46:09,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 05:46:10,139 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 05:46:10,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:46:10,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 2831 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 05:46:10,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:46:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:46:10,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 05:46:10,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:46:10,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119784482] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 05:46:10,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 05:46:10,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 21 [2022-03-18 05:46:10,630 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:46:10,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1820406399] [2022-03-18 05:46:10,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1820406399] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:46:10,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:46:10,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 05:46:10,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232866437] [2022-03-18 05:46:10,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:46:10,631 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 05:46:10,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:46:10,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 05:46:10,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:46:10,631 INFO L87 Difference]: Start difference. First operand 6979 states and 10498 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:46:19,981 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 [] [2022-03-18 05:46:24,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:46:24,772 INFO L93 Difference]: Finished difference Result 14779 states and 22791 transitions. [2022-03-18 05:46:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 05:46:24,795 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2022-03-18 05:46:24,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:46:24,832 INFO L225 Difference]: With dead ends: 14779 [2022-03-18 05:46:24,833 INFO L226 Difference]: Without dead ends: 7771 [2022-03-18 05:46:24,868 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2022-03-18 05:46:24,871 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 1590 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 5788 mSolverCounterSat, 681 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 6470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 5788 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:46:24,871 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1620 Valid, 2014 Invalid, 6470 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [681 Valid, 5788 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2022-03-18 05:46:24,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7771 states. [2022-03-18 05:46:26,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7771 to 7000. [2022-03-18 05:46:26,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7000 states, 5596 states have (on average 1.4465689778413153) internal successors, (8095), 5746 states have internal predecessors, (8095), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 05:46:26,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7000 states to 7000 states and 10519 transitions. [2022-03-18 05:46:26,189 INFO L78 Accepts]: Start accepts. Automaton has 7000 states and 10519 transitions. Word has length 64 [2022-03-18 05:46:26,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:46:26,190 INFO L478 AbstractCegarLoop]: Abstraction has 7000 states and 10519 transitions. [2022-03-18 05:46:26,190 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:46:26,190 INFO L276 IsEmpty]: Start isEmpty. Operand 7000 states and 10519 transitions. [2022-03-18 05:46:26,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-18 05:46:26,191 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:46:26,191 INFO L500 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:46:26,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-18 05:46:26,392 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-18 05:46:26,393 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:46:26,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:46:26,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1205153295, now seen corresponding path program 1 times [2022-03-18 05:46:26,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:46:26,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1828016121] [2022-03-18 05:46:26,397 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:46:26,401 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:46:26,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1205153295, now seen corresponding path program 2 times [2022-03-18 05:46:26,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:46:26,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659557771] [2022-03-18 05:46:26,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:46:26,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:46:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:26,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:46:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:26,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:46:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:26,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:46:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:27,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 05:46:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:27,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:46:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:27,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 05:46:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:27,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 05:46:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:27,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:46:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:27,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:46:27,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:46:27,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659557771] [2022-03-18 05:46:27,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659557771] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:46:27,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102090962] [2022-03-18 05:46:27,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:46:27,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:46:27,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:46:27,172 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:46:27,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 05:46:31,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 05:46:31,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:46:31,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 2847 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-18 05:46:31,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:46:31,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:46:31,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 05:46:32,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:46:32,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102090962] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 05:46:32,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 05:46:32,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 7] total 24 [2022-03-18 05:46:32,309 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:46:32,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1828016121] [2022-03-18 05:46:32,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1828016121] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:46:32,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:46:32,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 05:46:32,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027049156] [2022-03-18 05:46:32,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:46:32,309 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 05:46:32,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:46:32,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 05:46:32,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-03-18 05:46:32,310 INFO L87 Difference]: Start difference. First operand 7000 states and 10519 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:46:38,669 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 [] [2022-03-18 05:46:40,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:45,404 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:46:50,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:46:50,164 INFO L93 Difference]: Finished difference Result 14820 states and 22832 transitions. [2022-03-18 05:46:50,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 05:46:50,165 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2022-03-18 05:46:50,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:46:50,217 INFO L225 Difference]: With dead ends: 14820 [2022-03-18 05:46:50,217 INFO L226 Difference]: Without dead ends: 7792 [2022-03-18 05:46:50,239 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=250, Invalid=1010, Unknown=0, NotChecked=0, Total=1260 [2022-03-18 05:46:50,239 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 1638 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 5882 mSolverCounterSat, 674 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 6559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 674 IncrementalHoareTripleChecker+Valid, 5882 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:46:50,239 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1668 Valid, 2053 Invalid, 6559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [674 Valid, 5882 Invalid, 3 Unknown, 0 Unchecked, 15.1s Time] [2022-03-18 05:46:50,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2022-03-18 05:46:51,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7021. [2022-03-18 05:46:51,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7021 states, 5617 states have (on average 1.4448994124977745) internal successors, (8116), 5767 states have internal predecessors, (8116), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 05:46:51,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 10540 transitions. [2022-03-18 05:46:51,638 INFO L78 Accepts]: Start accepts. Automaton has 7021 states and 10540 transitions. Word has length 66 [2022-03-18 05:46:51,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:46:51,638 INFO L478 AbstractCegarLoop]: Abstraction has 7021 states and 10540 transitions. [2022-03-18 05:46:51,638 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:46:51,638 INFO L276 IsEmpty]: Start isEmpty. Operand 7021 states and 10540 transitions. [2022-03-18 05:46:51,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-18 05:46:51,652 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:46:51,652 INFO L500 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:46:51,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 05:46:51,863 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:46:51,864 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:46:51,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:46:51,864 INFO L85 PathProgramCache]: Analyzing trace with hash -626150932, now seen corresponding path program 5 times [2022-03-18 05:46:51,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:46:51,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [791673658] [2022-03-18 05:46:51,867 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:46:51,867 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:46:51,867 INFO L85 PathProgramCache]: Analyzing trace with hash -626150932, now seen corresponding path program 6 times [2022-03-18 05:46:51,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:46:51,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455700804] [2022-03-18 05:46:51,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:46:51,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:46:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:52,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:46:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:52,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:46:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:52,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:46:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:52,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:46:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:52,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:46:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:52,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-18 05:46:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:52,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 05:46:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:52,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:46:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:46:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:46:52,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:46:52,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455700804] [2022-03-18 05:46:52,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455700804] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:46:52,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324768365] [2022-03-18 05:46:52,600 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 05:46:52,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:46:52,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:46:52,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:46:52,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 05:47:51,819 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-18 05:47:51,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:47:51,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 2861 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-18 05:47:51,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:47:52,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:47:52,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 05:47:52,545 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:47:52,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324768365] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 05:47:52,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 05:47:52,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8, 8] total 27 [2022-03-18 05:47:52,546 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:47:52,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [791673658] [2022-03-18 05:47:52,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [791673658] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:47:52,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:47:52,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:47:52,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864623303] [2022-03-18 05:47:52,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:47:52,546 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:47:52,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:47:52,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:47:52,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2022-03-18 05:47:52,547 INFO L87 Difference]: Start difference. First operand 7021 states and 10540 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:48:00,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:02,164 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:04,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:06,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:08,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:14,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:48:19,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:48:19,568 INFO L93 Difference]: Finished difference Result 14861 states and 22873 transitions. [2022-03-18 05:48:19,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-18 05:48:19,568 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2022-03-18 05:48:19,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:48:19,596 INFO L225 Difference]: With dead ends: 14861 [2022-03-18 05:48:19,597 INFO L226 Difference]: Without dead ends: 7813 [2022-03-18 05:48:19,621 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=298, Invalid=1262, Unknown=0, NotChecked=0, Total=1560 [2022-03-18 05:48:19,621 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 1488 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 6758 mSolverCounterSat, 621 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 7385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 6758 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:48:19,622 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1518 Valid, 2224 Invalid, 7385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 6758 Invalid, 6 Unknown, 0 Unchecked, 24.0s Time] [2022-03-18 05:48:19,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7813 states. [2022-03-18 05:48:21,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7813 to 7042. [2022-03-18 05:48:21,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7042 states, 5638 states have (on average 1.443242284498049) internal successors, (8137), 5788 states have internal predecessors, (8137), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 05:48:21,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7042 states to 7042 states and 10561 transitions. [2022-03-18 05:48:21,088 INFO L78 Accepts]: Start accepts. Automaton has 7042 states and 10561 transitions. Word has length 66 [2022-03-18 05:48:21,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:48:21,088 INFO L478 AbstractCegarLoop]: Abstraction has 7042 states and 10561 transitions. [2022-03-18 05:48:21,088 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:48:21,088 INFO L276 IsEmpty]: Start isEmpty. Operand 7042 states and 10561 transitions. [2022-03-18 05:48:21,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-18 05:48:21,090 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:48:21,090 INFO L500 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:48:21,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-18 05:48:21,303 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-18 05:48:21,303 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:48:21,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:48:21,304 INFO L85 PathProgramCache]: Analyzing trace with hash 209024124, now seen corresponding path program 7 times [2022-03-18 05:48:21,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:21,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1520565626] [2022-03-18 05:48:21,305 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:48:21,305 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:48:21,305 INFO L85 PathProgramCache]: Analyzing trace with hash 209024124, now seen corresponding path program 8 times [2022-03-18 05:48:21,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:48:21,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129998430] [2022-03-18 05:48:21,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:48:21,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:48:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:21,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:48:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:21,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:48:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:21,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 05:48:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:21,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:48:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:22,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:48:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:22,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-18 05:48:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:22,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 05:48:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:22,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:48:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:22,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:48:22,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129998430] [2022-03-18 05:48:22,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129998430] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:48:22,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715549634] [2022-03-18 05:48:22,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:48:22,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:48:22,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:48:22,136 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:48:22,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 05:48:25,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 05:48:25,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:48:25,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 2876 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-18 05:48:25,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:48:25,407 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:25,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 05:48:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:25,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715549634] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 05:48:25,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 05:48:25,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 9] total 30 [2022-03-18 05:48:25,873 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:48:25,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1520565626] [2022-03-18 05:48:25,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1520565626] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:25,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:48:25,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-18 05:48:25,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370992751] [2022-03-18 05:48:25,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:48:25,874 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-18 05:48:25,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:25,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-18 05:48:25,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2022-03-18 05:48:25,874 INFO L87 Difference]: Start difference. First operand 7042 states and 10561 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:48:37,306 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 [] [2022-03-18 05:48:42,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:48:42,599 INFO L93 Difference]: Finished difference Result 14902 states and 22914 transitions. [2022-03-18 05:48:42,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-18 05:48:42,600 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-03-18 05:48:42,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:48:42,661 INFO L225 Difference]: With dead ends: 14902 [2022-03-18 05:48:42,661 INFO L226 Difference]: Without dead ends: 7834 [2022-03-18 05:48:42,698 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=354, Invalid=1538, Unknown=0, NotChecked=0, Total=1892 [2022-03-18 05:48:42,699 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 1807 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 6796 mSolverCounterSat, 770 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 7567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 770 IncrementalHoareTripleChecker+Valid, 6796 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-03-18 05:48:42,699 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1837 Valid, 2262 Invalid, 7567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [770 Valid, 6796 Invalid, 1 Unknown, 0 Unchecked, 13.4s Time] [2022-03-18 05:48:42,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7834 states. [2022-03-18 05:48:44,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7834 to 7063. [2022-03-18 05:48:44,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 5659 states have (on average 1.4415974553808093) internal successors, (8158), 5809 states have internal predecessors, (8158), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 05:48:44,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 10582 transitions. [2022-03-18 05:48:44,129 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 10582 transitions. Word has length 67 [2022-03-18 05:48:44,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:48:44,129 INFO L478 AbstractCegarLoop]: Abstraction has 7063 states and 10582 transitions. [2022-03-18 05:48:44,129 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:48:44,129 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 10582 transitions. [2022-03-18 05:48:44,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-18 05:48:44,130 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:48:44,130 INFO L500 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:48:44,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-18 05:48:44,347 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-18 05:48:44,348 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:48:44,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:48:44,348 INFO L85 PathProgramCache]: Analyzing trace with hash 329647084, now seen corresponding path program 9 times [2022-03-18 05:48:44,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:44,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1200702359] [2022-03-18 05:48:44,349 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:48:44,349 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:48:44,349 INFO L85 PathProgramCache]: Analyzing trace with hash 329647084, now seen corresponding path program 10 times [2022-03-18 05:48:44,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:48:44,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910162692] [2022-03-18 05:48:44,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:48:44,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:48:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:44,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:48:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:44,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:48:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:44,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:48:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:45,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 05:48:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:45,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:48:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:45,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 05:48:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:45,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-18 05:48:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:45,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:48:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:45,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:48:45,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910162692] [2022-03-18 05:48:45,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910162692] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:48:45,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677530627] [2022-03-18 05:48:45,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 05:48:45,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:48:45,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:48:45,198 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:48:45,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-18 05:48:46,251 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 05:48:46,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:48:46,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 05:48:46,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:48:46,664 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:46,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 05:48:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:47,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677530627] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 05:48:47,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 05:48:47,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10, 10] total 33 [2022-03-18 05:48:47,303 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:48:47,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1200702359] [2022-03-18 05:48:47,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1200702359] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:47,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:48:47,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-18 05:48:47,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776006831] [2022-03-18 05:48:47,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:48:47,303 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-18 05:48:47,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:47,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-18 05:48:47,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=859, Unknown=0, NotChecked=0, Total=1056 [2022-03-18 05:48:47,304 INFO L87 Difference]: Start difference. First operand 7063 states and 10582 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:48:59,750 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 [] [2022-03-18 05:49:05,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:49:05,611 INFO L93 Difference]: Finished difference Result 14943 states and 22955 transitions. [2022-03-18 05:49:05,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-18 05:49:05,611 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-03-18 05:49:05,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:49:05,637 INFO L225 Difference]: With dead ends: 14943 [2022-03-18 05:49:05,638 INFO L226 Difference]: Without dead ends: 7855 [2022-03-18 05:49:05,661 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=416, Invalid=1840, Unknown=0, NotChecked=0, Total=2256 [2022-03-18 05:49:05,661 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 1813 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 8268 mSolverCounterSat, 776 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 9045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 8268 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:49:05,662 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1843 Valid, 2630 Invalid, 9045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [776 Valid, 8268 Invalid, 1 Unknown, 0 Unchecked, 14.9s Time] [2022-03-18 05:49:05,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7855 states. [2022-03-18 05:49:07,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7855 to 7084. [2022-03-18 05:49:07,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7084 states, 5680 states have (on average 1.4399647887323943) internal successors, (8179), 5830 states have internal predecessors, (8179), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 05:49:07,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7084 states to 7084 states and 10603 transitions. [2022-03-18 05:49:07,286 INFO L78 Accepts]: Start accepts. Automaton has 7084 states and 10603 transitions. Word has length 68 [2022-03-18 05:49:07,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:49:07,286 INFO L478 AbstractCegarLoop]: Abstraction has 7084 states and 10603 transitions. [2022-03-18 05:49:07,287 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:49:07,287 INFO L276 IsEmpty]: Start isEmpty. Operand 7084 states and 10603 transitions. [2022-03-18 05:49:07,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-18 05:49:07,288 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:49:07,288 INFO L500 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:49:07,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-03-18 05:49:07,504 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-18 05:49:07,505 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:49:07,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:49:07,505 INFO L85 PathProgramCache]: Analyzing trace with hash -850463247, now seen corresponding path program 3 times [2022-03-18 05:49:07,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:07,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1364341306] [2022-03-18 05:49:07,506 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:49:07,506 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:49:07,506 INFO L85 PathProgramCache]: Analyzing trace with hash -850463247, now seen corresponding path program 4 times [2022-03-18 05:49:07,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:49:07,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741492544] [2022-03-18 05:49:07,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:49:07,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:49:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:07,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:49:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:07,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:49:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:08,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 05:49:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:08,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 05:49:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:08,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:08,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-18 05:49:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:08,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 05:49:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:08,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:08,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:49:08,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741492544] [2022-03-18 05:49:08,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741492544] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:49:08,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439591800] [2022-03-18 05:49:08,622 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 05:49:08,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:49:08,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:49:08,623 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:49:08,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-18 05:49:10,025 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 05:49:10,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:49:10,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 2907 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-18 05:49:10,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:49:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:10,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 05:49:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:11,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439591800] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 05:49:11,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 05:49:11,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 36 [2022-03-18 05:49:11,199 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:49:11,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1364341306] [2022-03-18 05:49:11,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1364341306] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:11,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:49:11,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-18 05:49:11,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044300194] [2022-03-18 05:49:11,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:49:11,200 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-18 05:49:11,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:11,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-18 05:49:11,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1023, Unknown=0, NotChecked=0, Total=1260 [2022-03-18 05:49:11,200 INFO L87 Difference]: Start difference. First operand 7084 states and 10603 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:49:21,444 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 [] [2022-03-18 05:49:26,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:49:26,243 INFO L93 Difference]: Finished difference Result 14984 states and 22996 transitions. [2022-03-18 05:49:26,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-18 05:49:26,244 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-03-18 05:49:26,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:49:26,282 INFO L225 Difference]: With dead ends: 14984 [2022-03-18 05:49:26,282 INFO L226 Difference]: Without dead ends: 7876 [2022-03-18 05:49:26,304 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=484, Invalid=2168, Unknown=0, NotChecked=0, Total=2652 [2022-03-18 05:49:26,305 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 1788 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 4822 mSolverCounterSat, 829 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 5652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 829 IncrementalHoareTripleChecker+Valid, 4822 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:49:26,305 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1818 Valid, 1829 Invalid, 5652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [829 Valid, 4822 Invalid, 1 Unknown, 0 Unchecked, 11.1s Time] [2022-03-18 05:49:26,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7876 states. [2022-03-18 05:49:27,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7876 to 7105. [2022-03-18 05:49:27,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7105 states, 5701 states have (on average 1.4383441501490966) internal successors, (8200), 5851 states have internal predecessors, (8200), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 05:49:27,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 10624 transitions. [2022-03-18 05:49:27,882 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 10624 transitions. Word has length 70 [2022-03-18 05:49:27,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:49:27,882 INFO L478 AbstractCegarLoop]: Abstraction has 7105 states and 10624 transitions. [2022-03-18 05:49:27,882 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:49:27,882 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 10624 transitions. [2022-03-18 05:49:27,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-18 05:49:27,883 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:49:27,883 INFO L500 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:49:27,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-18 05:49:28,109 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:49:28,110 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:49:28,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:49:28,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2035478657, now seen corresponding path program 5 times [2022-03-18 05:49:28,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:28,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1415446145] [2022-03-18 05:49:28,111 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:49:28,111 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:49:28,111 INFO L85 PathProgramCache]: Analyzing trace with hash 2035478657, now seen corresponding path program 6 times [2022-03-18 05:49:28,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:49:28,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676925779] [2022-03-18 05:49:28,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:49:28,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:49:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:28,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:49:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:28,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:49:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:28,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:49:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:28,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 05:49:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:29,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:29,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 05:49:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:29,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-18 05:49:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:29,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:29,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:49:29,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676925779] [2022-03-18 05:49:29,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676925779] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:49:29,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967251866] [2022-03-18 05:49:29,168 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 05:49:29,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:49:29,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:49:29,169 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:49:29,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-18 05:55:18,099 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-18 05:55:18,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:55:18,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 2922 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-18 05:55:18,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:55:18,818 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:55:18,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 05:55:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:55:19,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967251866] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 05:55:19,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 05:55:19,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 12] total 40 [2022-03-18 05:55:19,676 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:55:19,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1415446145] [2022-03-18 05:55:19,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1415446145] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:55:19,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:55:19,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-18 05:55:19,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429897075] [2022-03-18 05:55:19,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:55:19,676 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-18 05:55:19,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:55:19,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-18 05:55:19,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1277, Unknown=0, NotChecked=0, Total=1560 [2022-03-18 05:55:19,677 INFO L87 Difference]: Start difference. First operand 7105 states and 10624 transitions. Second operand has 20 states, 20 states have (on average 2.65) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:55:36,430 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 [] [2022-03-18 05:55:43,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:55:43,592 INFO L93 Difference]: Finished difference Result 15025 states and 23037 transitions. [2022-03-18 05:55:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-18 05:55:43,593 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-03-18 05:55:43,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:55:43,622 INFO L225 Difference]: With dead ends: 15025 [2022-03-18 05:55:43,622 INFO L226 Difference]: Without dead ends: 7897 [2022-03-18 05:55:43,644 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=560, Invalid=2632, Unknown=0, NotChecked=0, Total=3192 [2022-03-18 05:55:43,645 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 1921 mSDsluCounter, 2394 mSDsCounter, 0 mSdLazyCounter, 9911 mSolverCounterSat, 894 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 10806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 894 IncrementalHoareTripleChecker+Valid, 9911 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:55:43,645 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1951 Valid, 3094 Invalid, 10806 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [894 Valid, 9911 Invalid, 1 Unknown, 0 Unchecked, 19.5s Time] [2022-03-18 05:55:43,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7897 states. [2022-03-18 05:55:45,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7897 to 7126. [2022-03-18 05:55:45,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7126 states, 5722 states have (on average 1.4367354072002796) internal successors, (8221), 5872 states have internal predecessors, (8221), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 05:55:45,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 10645 transitions. [2022-03-18 05:55:45,256 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 10645 transitions. Word has length 71 [2022-03-18 05:55:45,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:55:45,256 INFO L478 AbstractCegarLoop]: Abstraction has 7126 states and 10645 transitions. [2022-03-18 05:55:45,257 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:55:45,257 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 10645 transitions. [2022-03-18 05:55:45,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-18 05:55:45,257 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:55:45,257 INFO L500 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:55:45,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-18 05:55:45,471 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:55:45,471 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:55:45,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:55:45,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1680486276, now seen corresponding path program 11 times [2022-03-18 05:55:45,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:55:45,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1645002066] [2022-03-18 05:55:45,473 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:55:45,473 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:55:45,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1680486276, now seen corresponding path program 12 times [2022-03-18 05:55:45,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:55:45,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487418831] [2022-03-18 05:55:45,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:55:45,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:55:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:45,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:55:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:45,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:55:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:46,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:55:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:46,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:55:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:46,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:55:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:46,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 05:55:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:46,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-18 05:55:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:46,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:55:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:55:46,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:55:46,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487418831] [2022-03-18 05:55:46,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487418831] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:55:46,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373840830] [2022-03-18 05:55:46,897 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 05:55:46,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:55:46,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:55:46,898 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:55:46,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process