/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 18:57:20,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 18:57:20,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 18:57:20,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 18:57:20,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 18:57:20,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 18:57:20,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 18:57:20,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 18:57:20,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 18:57:20,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 18:57:20,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 18:57:20,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 18:57:20,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 18:57:20,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 18:57:20,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 18:57:20,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 18:57:20,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 18:57:20,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 18:57:20,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 18:57:20,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 18:57:20,170 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 18:57:20,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 18:57:20,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 18:57:20,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 18:57:20,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 18:57:20,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-06 18:57:20,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-06 18:57:20,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-06 18:57:20,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-06 18:57:20,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-06 18:57:20,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-06 18:57:20,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-06 18:57:20,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-06 18:57:20,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-06 18:57:20,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-06 18:57:20,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-06 18:57:20,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-06 18:57:20,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-06 18:57:20,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-06 18:57:20,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 18:57:20,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 18:57:20,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 18:57:20,188 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-06 18:57:20,195 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 18:57:20,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 18:57:20,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 18:57:20,198 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 18:57:20,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 18:57:20,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 18:57:20,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 18:57:20,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 18:57:20,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 18:57:20,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 18:57:20,199 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 18:57:20,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 18:57:20,199 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 18:57:20,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 18:57:20,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 18:57:20,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 18:57:20,200 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 18:57:20,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 18:57:20,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 18:57:20,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 18:57:20,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-06 18:57:20,201 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-06 18:57:20,201 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-06 18:57:20,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 18:57:20,201 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-06 18:57:20,201 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 18:57:20,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 18:57:20,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 18:57:20,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 18:57:20,456 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 18:57:20,457 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 18:57:20,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-04-06 18:57:20,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59e2f43d5/45b5dcf93d364a1796b7ae0cda713471/FLAGe5696b69f [2022-04-06 18:57:21,134 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 18:57:21,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-04-06 18:57:21,184 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59e2f43d5/45b5dcf93d364a1796b7ae0cda713471/FLAGe5696b69f [2022-04-06 18:57:21,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59e2f43d5/45b5dcf93d364a1796b7ae0cda713471 [2022-04-06 18:57:21,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 18:57:21,302 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 18:57:21,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 18:57:21,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 18:57:21,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 18:57:21,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 06:57:21" (1/1) ... [2022-04-06 18:57:21,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6db35df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:57:21, skipping insertion in model container [2022-04-06 18:57:21,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 06:57:21" (1/1) ... [2022-04-06 18:57:21,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 18:57:21,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 18:57:21,963 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] [2022-04-06 18:57:22,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 18:57:22,455 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 18:57:22,517 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] [2022-04-06 18:57:22,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 18:57:22,767 INFO L208 MainTranslator]: Completed translation [2022-04-06 18:57:22,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:57:22 WrapperNode [2022-04-06 18:57:22,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 18:57:22,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 18:57:22,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 18:57:22,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 18:57:22,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:57:22" (1/1) ... [2022-04-06 18:57:22,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:57:22" (1/1) ... [2022-04-06 18:57:22,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:57:22" (1/1) ... [2022-04-06 18:57:22,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:57:22" (1/1) ... [2022-04-06 18:57:23,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:57:22" (1/1) ... [2022-04-06 18:57:23,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:57:22" (1/1) ... [2022-04-06 18:57:23,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:57:22" (1/1) ... [2022-04-06 18:57:23,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 18:57:23,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 18:57:23,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 18:57:23,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 18:57:23,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:57:22" (1/1) ... [2022-04-06 18:57:23,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 18:57:23,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:57:23,128 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) [2022-04-06 18:57:23,154 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 [2022-04-06 18:57:23,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 18:57:23,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 18:57:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 18:57:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-04-06 18:57:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-04-06 18:57:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-04-06 18:57:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-04-06 18:57:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyUnload [2022-04-06 18:57:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyAddDevice [2022-04-06 18:57:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConfigCallBack [2022-04-06 18:57:23,177 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-04-06 18:57:23,177 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-04-06 18:57:23,178 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-04-06 18:57:23,178 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-04-06 18:57:23,178 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-04-06 18:57:23,178 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-04-06 18:57:23,178 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-04-06 18:57:23,178 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPower [2022-04-06 18:57:23,178 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyReadWrite [2022-04-06 18:57:23,178 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInterpretError [2022-04-06 18:57:23,178 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFinishOperation [2022-04-06 18:57:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure FlStartDrive [2022-04-06 18:57:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDatarateSpecifyConfigure [2022-04-06 18:57:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure FlRecalibrateDrive [2022-04-06 18:57:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDetermineMediaType [2022-04-06 18:57:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAllocateIoBuffer [2022-04-06 18:57:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFreeIoBuffer [2022-04-06 18:57:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyThread [2022-04-06 18:57:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConsolidateMediaTypeWithBootSector [2022-04-06 18:57:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckBootSector [2022-04-06 18:57:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWriteTrack [2022-04-06 18:57:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWrite [2022-04-06 18:57:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFormat [2022-04-06 18:57:23,180 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-04-06 18:57:23,180 INFO L138 BoogieDeclarations]: Found implementation of procedure FlIssueCommand [2022-04-06 18:57:23,180 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInitializeControllerHardware [2022-04-06 18:57:23,180 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-04-06 18:57:23,180 INFO L138 BoogieDeclarations]: Found implementation of procedure FlHdbit [2022-04-06 18:57:23,180 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-04-06 18:57:23,180 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCancelQueuedRequest [2022-04-06 18:57:23,180 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-04-06 18:57:23,180 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-04-06 18:57:23,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 18:57:23,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-04-06 18:57:23,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-04-06 18:57:23,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-04-06 18:57:23,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-04-06 18:57:23,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-04-06 18:57:23,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-04-06 18:57:23,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-04-06 18:57:23,181 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-04-06 18:57:23,181 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-04-06 18:57:23,181 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-04-06 18:57:23,181 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-04-06 18:57:23,181 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-04-06 18:57:23,181 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-04-06 18:57:23,181 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-04-06 18:57:23,181 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-04-06 18:57:23,182 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-04-06 18:57:23,182 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-04-06 18:57:23,182 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-04-06 18:57:23,182 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-04-06 18:57:23,182 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-04-06 18:57:23,182 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-04-06 18:57:23,182 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-04-06 18:57:23,182 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-04-06 18:57:23,182 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-04-06 18:57:23,182 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-04-06 18:57:23,182 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-04-06 18:57:23,182 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-04-06 18:57:23,183 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-04-06 18:57:23,183 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-04-06 18:57:23,183 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-04-06 18:57:23,183 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-04-06 18:57:23,183 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-04-06 18:57:23,183 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-04-06 18:57:23,183 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-04-06 18:57:23,183 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-04-06 18:57:23,184 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-04-06 18:57:23,184 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-04-06 18:57:23,184 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-04-06 18:57:23,184 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-04-06 18:57:23,184 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-04-06 18:57:23,185 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-04-06 18:57:23,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-04-06 18:57:23,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-04-06 18:57:23,186 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-04-06 18:57:23,186 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-04-06 18:57:23,186 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-04-06 18:57:23,186 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-04-06 18:57:23,186 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-04-06 18:57:23,186 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-04-06 18:57:23,186 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-04-06 18:57:23,186 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-04-06 18:57:23,186 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-04-06 18:57:23,187 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-04-06 18:57:23,187 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-04-06 18:57:23,187 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-04-06 18:57:23,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-04-06 18:57:23,187 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-04-06 18:57:23,187 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-04-06 18:57:23,187 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-04-06 18:57:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 18:57:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 18:57:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 18:57:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 18:57:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-06 18:57:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 18:57:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-06 18:57:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2022-04-06 18:57:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-04-06 18:57:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-04-06 18:57:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-04-06 18:57:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-04-06 18:57:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-04-06 18:57:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-04-06 18:57:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-04-06 18:57:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-04-06 18:57:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-04-06 18:57:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-04-06 18:57:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-04-06 18:57:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-04-06 18:57:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-04-06 18:57:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 18:57:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 18:57:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-04-06 18:57:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-04-06 18:57:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-04-06 18:57:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-04-06 18:57:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-04-06 18:57:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-04-06 18:57:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-04-06 18:57:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-04-06 18:57:23,192 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-04-06 18:57:23,192 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-04-06 18:57:23,192 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-04-06 18:57:23,193 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-04-06 18:57:23,194 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-04-06 18:57:23,196 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-04-06 18:57:23,196 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-04-06 18:57:23,201 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-04-06 18:57:23,201 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-04-06 18:57:23,201 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-04-06 18:57:23,201 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-04-06 18:57:23,201 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-04-06 18:57:23,201 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-04-06 18:57:23,201 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-04-06 18:57:23,201 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-04-06 18:57:23,201 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-04-06 18:57:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-04-06 18:57:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-04-06 18:57:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-04-06 18:57:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-04-06 18:57:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-04-06 18:57:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-04-06 18:57:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-04-06 18:57:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-04-06 18:57:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-04-06 18:57:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-04-06 18:57:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-04-06 18:57:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-04-06 18:57:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-04-06 18:57:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-04-06 18:57:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-04-06 18:57:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-04-06 18:57:23,203 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-04-06 18:57:23,203 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-04-06 18:57:23,203 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-04-06 18:57:23,203 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-04-06 18:57:23,203 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-04-06 18:57:23,203 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-04-06 18:57:23,203 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-04-06 18:57:23,203 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyUnload [2022-04-06 18:57:23,203 INFO L130 BoogieDeclarations]: Found specification of procedure FlConfigCallBack [2022-04-06 18:57:23,203 INFO L130 BoogieDeclarations]: Found specification of procedure FlInitializeControllerHardware [2022-04-06 18:57:23,203 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-04-06 18:57:23,203 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-04-06 18:57:23,203 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyReadWrite [2022-04-06 18:57:23,203 INFO L130 BoogieDeclarations]: Found specification of procedure FlRecalibrateDrive [2022-04-06 18:57:23,203 INFO L130 BoogieDeclarations]: Found specification of procedure FlDatarateSpecifyConfigure [2022-04-06 18:57:23,203 INFO L130 BoogieDeclarations]: Found specification of procedure FlStartDrive [2022-04-06 18:57:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure FlFinishOperation [2022-04-06 18:57:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure FlDetermineMediaType [2022-04-06 18:57:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyThread [2022-04-06 18:57:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWrite [2022-04-06 18:57:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure FlFormat [2022-04-06 18:57:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure FlIssueCommand [2022-04-06 18:57:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-04-06 18:57:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-04-06 18:57:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure FlInterpretError [2022-04-06 18:57:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure FlAllocateIoBuffer [2022-04-06 18:57:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure FlFreeIoBuffer [2022-04-06 18:57:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure FlConsolidateMediaTypeWithBootSector [2022-04-06 18:57:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckBootSector [2022-04-06 18:57:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWriteTrack [2022-04-06 18:57:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-04-06 18:57:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyAddDevice [2022-04-06 18:57:23,205 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-04-06 18:57:23,205 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPower [2022-04-06 18:57:23,205 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-04-06 18:57:23,205 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-04-06 18:57:23,205 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-04-06 18:57:23,205 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-04-06 18:57:23,205 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCancelQueuedRequest [2022-04-06 18:57:23,205 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-04-06 18:57:23,205 INFO L130 BoogieDeclarations]: Found specification of procedure FlHdbit [2022-04-06 18:57:23,205 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-04-06 18:57:23,205 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-04-06 18:57:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-04-06 18:57:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-06 18:57:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-04-06 18:57:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-04-06 18:57:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-06 18:57:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 18:57:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-04-06 18:57:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-04-06 18:57:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-04-06 18:57:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-04-06 18:57:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 18:57:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-04-06 18:57:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-04-06 18:57:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 18:57:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 18:57:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 18:57:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-04-06 18:57:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-04-06 18:57:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-04-06 18:57:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-04-06 18:57:23,847 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 18:57:23,852 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 18:57:23,868 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:23,909 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 18:57:23,909 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 18:57:23,909 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:23,915 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 18:57:23,915 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 18:57:25,522 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:25,527 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 18:57:25,528 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 18:57:25,528 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:25,536 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 18:57:25,537 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 18:57:25,541 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:25,548 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 18:57:25,548 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 18:57:25,590 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:25,599 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 18:57:25,600 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 18:57:25,600 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:25,609 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 18:57:25,610 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 18:57:25,610 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:25,620 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 18:57:25,620 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 18:57:25,687 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:25,754 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-04-06 18:57:25,754 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-04-06 18:57:25,830 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:25,840 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 18:57:25,840 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 18:57:25,840 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:25,844 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 18:57:25,844 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 18:57:25,844 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:25,858 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 18:57:25,861 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 18:57:25,871 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:25,878 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 18:57:25,878 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 18:57:25,879 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:25,883 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 18:57:25,883 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 18:57:31,953 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:31,969 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-04-06 18:57:31,969 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-04-06 18:57:32,090 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:32,570 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-04-06 18:57:32,570 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-04-06 18:57:32,882 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:32,886 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 18:57:32,886 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 18:57:32,950 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:32,978 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-04-06 18:57:32,978 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-04-06 18:57:32,981 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:33,113 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-04-06 18:57:33,113 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-04-06 18:57:33,113 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:33,164 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-04-06 18:57:33,164 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-04-06 18:57:44,266 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:44,270 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 18:57:44,270 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 18:57:44,348 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:44,352 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 18:57:44,352 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 18:57:44,370 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:46,693 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-04-06 18:57:46,694 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-04-06 18:57:46,734 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:46,934 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-04-06 18:57:46,934 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-04-06 18:57:46,936 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:46,951 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-04-06 18:57:46,951 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-04-06 18:57:46,952 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:46,985 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-04-06 18:57:46,985 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-04-06 18:57:46,988 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:46,996 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-06 18:57:46,997 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-06 18:57:47,032 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:47,036 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 18:57:47,036 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 18:57:47,047 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:47,051 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 18:57:47,052 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 18:57:47,052 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:47,124 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2022-04-06 18:57:47,124 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2022-04-06 18:57:47,168 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 18:57:49,662 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-04-06 18:57:49,662 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-04-06 18:57:49,701 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 18:57:49,722 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 18:57:49,723 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-04-06 18:57:49,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:57:49 BoogieIcfgContainer [2022-04-06 18:57:49,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 18:57:49,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 18:57:49,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 18:57:49,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 18:57:49,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 06:57:21" (1/3) ... [2022-04-06 18:57:49,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f228e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 06:57:49, skipping insertion in model container [2022-04-06 18:57:49,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:57:22" (2/3) ... [2022-04-06 18:57:49,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f228e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 06:57:49, skipping insertion in model container [2022-04-06 18:57:49,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:57:49" (3/3) ... [2022-04-06 18:57:49,735 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2022-04-06 18:57:49,742 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-06 18:57:49,743 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 18:57:49,784 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 18:57:49,795 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 [2022-04-06 18:57:49,795 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 18:57:49,844 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) [2022-04-06 18:57:49,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-04-06 18:57:49,855 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:57:49,856 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:57:49,856 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:57:49,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:57:49,861 INFO L85 PathProgramCache]: Analyzing trace with hash 760330439, now seen corresponding path program 1 times [2022-04-06 18:57:49,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:57:49,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [670092283] [2022-04-06 18:57:49,875 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:57:49,876 INFO L85 PathProgramCache]: Analyzing trace with hash 760330439, now seen corresponding path program 2 times [2022-04-06 18:57:49,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:57:49,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676031074] [2022-04-06 18:57:49,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:57:49,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:57:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:57:50,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:57:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:57:50,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 18:57:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:57:50,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 18:57:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:57:50,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 18:57:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:57:50,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 18:57:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:57:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:57:50,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:57:50,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676031074] [2022-04-06 18:57:50,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676031074] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:57:50,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:57:50,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 18:57:51,002 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:57:51,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [670092283] [2022-04-06 18:57:51,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [670092283] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:57:51,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:57:51,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 18:57:51,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838445993] [2022-04-06 18:57:51,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:57:51,007 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 18:57:51,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:57:51,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 18:57:51,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-04-06 18:57:51,044 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) [2022-04-06 18:57:56,412 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 [] [2022-04-06 18:57:58,520 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 18:58:03,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 18:58:04,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:58:04,134 INFO L93 Difference]: Finished difference Result 1399 states and 2144 transitions. [2022-04-06 18:58:04,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-06 18:58:04,136 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 [2022-04-06 18:58:04,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:58:04,151 INFO L225 Difference]: With dead ends: 1399 [2022-04-06 18:58:04,152 INFO L226 Difference]: Without dead ends: 833 [2022-04-06 18:58:04,160 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-04-06 18:58:04,164 INFO L913 BasicCegarLoop]: 728 mSDtfsCounter, 1822 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 917 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 3355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-04-06 18:58:04,164 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1850 Valid, 1207 Invalid, 3355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 2435 Invalid, 3 Unknown, 0 Unchecked, 11.9s Time] [2022-04-06 18:58:04,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-04-06 18:58:04,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 651. [2022-04-06 18:58:04,307 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) [2022-04-06 18:58:04,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 906 transitions. [2022-04-06 18:58:04,313 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 906 transitions. Word has length 37 [2022-04-06 18:58:04,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:58:04,314 INFO L478 AbstractCegarLoop]: Abstraction has 651 states and 906 transitions. [2022-04-06 18:58:04,314 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) [2022-04-06 18:58:04,314 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 906 transitions. [2022-04-06 18:58:04,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-04-06 18:58:04,315 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:58:04,315 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:58:04,316 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 18:58:04,316 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:58:04,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:58:04,316 INFO L85 PathProgramCache]: Analyzing trace with hash -2031942295, now seen corresponding path program 1 times [2022-04-06 18:58:04,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:58:04,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [819406358] [2022-04-06 18:58:04,317 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:58:04,317 INFO L85 PathProgramCache]: Analyzing trace with hash -2031942295, now seen corresponding path program 2 times [2022-04-06 18:58:04,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:58:04,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581762640] [2022-04-06 18:58:04,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:58:04,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:58:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:04,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:58:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:04,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 18:58:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:04,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 18:58:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:04,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 18:58:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:04,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 18:58:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:04,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-06 18:58:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:04,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:58:04,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:58:04,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581762640] [2022-04-06 18:58:04,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581762640] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:58:04,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:58:04,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 18:58:04,919 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:58:04,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [819406358] [2022-04-06 18:58:04,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [819406358] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:58:04,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:58:04,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 18:58:04,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247039262] [2022-04-06 18:58:04,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:58:04,921 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 18:58:04,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:58:04,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 18:58:04,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-04-06 18:58:04,922 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) [2022-04-06 18:58:11,178 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 [] [2022-04-06 18:58:15,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:58:15,237 INFO L93 Difference]: Finished difference Result 1886 states and 2773 transitions. [2022-04-06 18:58:15,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 18:58:15,238 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 [2022-04-06 18:58:15,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:58:15,248 INFO L225 Difference]: With dead ends: 1886 [2022-04-06 18:58:15,248 INFO L226 Difference]: Without dead ends: 1423 [2022-04-06 18:58:15,250 INFO L912 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 [2022-04-06 18:58:15,251 INFO L913 BasicCegarLoop]: 925 mSDtfsCounter, 2981 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 3574 mSolverCounterSat, 1112 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3019 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 4687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1112 IncrementalHoareTripleChecker+Valid, 3574 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:58:15,252 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3019 Valid, 1640 Invalid, 4687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1112 Valid, 3574 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-04-06 18:58:15,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-04-06 18:58:15,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1195. [2022-04-06 18:58:15,437 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) [2022-04-06 18:58:15,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1717 transitions. [2022-04-06 18:58:15,444 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1717 transitions. Word has length 42 [2022-04-06 18:58:15,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:58:15,444 INFO L478 AbstractCegarLoop]: Abstraction has 1195 states and 1717 transitions. [2022-04-06 18:58:15,445 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) [2022-04-06 18:58:15,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1717 transitions. [2022-04-06 18:58:15,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-06 18:58:15,454 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:58:15,454 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:58:15,454 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 18:58:15,455 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:58:15,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:58:15,455 INFO L85 PathProgramCache]: Analyzing trace with hash 2071284277, now seen corresponding path program 1 times [2022-04-06 18:58:15,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:58:15,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1634070895] [2022-04-06 18:58:15,456 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:58:15,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2071284277, now seen corresponding path program 2 times [2022-04-06 18:58:15,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:58:15,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833584620] [2022-04-06 18:58:15,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:58:15,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:58:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:15,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:58:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:15,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 18:58:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:16,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 18:58:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:16,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 18:58:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:16,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 18:58:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:16,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-06 18:58:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:16,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-06 18:58:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:16,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:58:16,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:58:16,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833584620] [2022-04-06 18:58:16,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833584620] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:58:16,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:58:16,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 18:58:16,156 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:58:16,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1634070895] [2022-04-06 18:58:16,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1634070895] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:58:16,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:58:16,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 18:58:16,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823487551] [2022-04-06 18:58:16,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:58:16,157 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 18:58:16,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:58:16,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 18:58:16,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-04-06 18:58:16,158 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) [2022-04-06 18:58:22,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 18:58:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:58:25,765 INFO L93 Difference]: Finished difference Result 2186 states and 3260 transitions. [2022-04-06 18:58:25,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 18:58:25,765 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 [2022-04-06 18:58:25,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:58:25,778 INFO L225 Difference]: With dead ends: 2186 [2022-04-06 18:58:25,778 INFO L226 Difference]: Without dead ends: 2168 [2022-04-06 18:58:25,780 INFO L912 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 [2022-04-06 18:58:25,781 INFO L913 BasicCegarLoop]: 720 mSDtfsCounter, 2910 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 3410 mSolverCounterSat, 990 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 4401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 990 IncrementalHoareTripleChecker+Valid, 3410 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-04-06 18:58:25,781 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2966 Valid, 1372 Invalid, 4401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [990 Valid, 3410 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-04-06 18:58:25,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2022-04-06 18:58:26,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 1838. [2022-04-06 18:58:26,041 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) [2022-04-06 18:58:26,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2684 transitions. [2022-04-06 18:58:26,050 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2684 transitions. Word has length 54 [2022-04-06 18:58:26,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:58:26,050 INFO L478 AbstractCegarLoop]: Abstraction has 1838 states and 2684 transitions. [2022-04-06 18:58:26,051 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) [2022-04-06 18:58:26,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2684 transitions. [2022-04-06 18:58:26,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-06 18:58:26,052 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:58:26,052 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:58:26,053 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-06 18:58:26,053 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:58:26,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:58:26,053 INFO L85 PathProgramCache]: Analyzing trace with hash 546834136, now seen corresponding path program 1 times [2022-04-06 18:58:26,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:58:26,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1217568548] [2022-04-06 18:58:26,054 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:58:26,054 INFO L85 PathProgramCache]: Analyzing trace with hash 546834136, now seen corresponding path program 2 times [2022-04-06 18:58:26,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:58:26,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151080262] [2022-04-06 18:58:26,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:58:26,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:58:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:26,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:58:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:26,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 18:58:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:26,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 18:58:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:26,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 18:58:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:26,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 18:58:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:26,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-06 18:58:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:26,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:58:26,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:58:26,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151080262] [2022-04-06 18:58:26,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151080262] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:58:26,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:58:26,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 18:58:26,640 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:58:26,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1217568548] [2022-04-06 18:58:26,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1217568548] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:58:26,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:58:26,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 18:58:26,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303914937] [2022-04-06 18:58:26,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:58:26,641 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 18:58:26,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:58:26,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 18:58:26,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-04-06 18:58:26,642 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) [2022-04-06 18:58:32,837 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 [] [2022-04-06 18:58:37,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:58:37,586 INFO L93 Difference]: Finished difference Result 3657 states and 5559 transitions. [2022-04-06 18:58:37,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 18:58:37,587 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 [2022-04-06 18:58:37,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:58:37,606 INFO L225 Difference]: With dead ends: 3657 [2022-04-06 18:58:37,606 INFO L226 Difference]: Without dead ends: 3654 [2022-04-06 18:58:37,608 INFO L912 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 [2022-04-06 18:58:37,608 INFO L913 BasicCegarLoop]: 1117 mSDtfsCounter, 2060 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 4326 mSolverCounterSat, 836 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 5163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 836 IncrementalHoareTripleChecker+Valid, 4326 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-04-06 18:58:37,609 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2100 Valid, 1847 Invalid, 5163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [836 Valid, 4326 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2022-04-06 18:58:37,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-04-06 18:58:38,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 2949. [2022-04-06 18:58:38,065 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) [2022-04-06 18:58:38,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4323 transitions. [2022-04-06 18:58:38,078 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4323 transitions. Word has length 55 [2022-04-06 18:58:38,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:58:38,079 INFO L478 AbstractCegarLoop]: Abstraction has 2949 states and 4323 transitions. [2022-04-06 18:58:38,079 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) [2022-04-06 18:58:38,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4323 transitions. [2022-04-06 18:58:38,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-06 18:58:38,080 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:58:38,080 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:58:38,080 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-06 18:58:38,081 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:58:38,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:58:38,081 INFO L85 PathProgramCache]: Analyzing trace with hash -893598350, now seen corresponding path program 1 times [2022-04-06 18:58:38,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:58:38,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [378296324] [2022-04-06 18:58:38,082 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:58:38,082 INFO L85 PathProgramCache]: Analyzing trace with hash -893598350, now seen corresponding path program 2 times [2022-04-06 18:58:38,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:58:38,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626924740] [2022-04-06 18:58:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:58:38,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:58:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:38,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:58:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:38,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 18:58:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:38,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 18:58:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:38,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 18:58:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:38,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 18:58:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:38,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-06 18:58:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:58:38,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:58:38,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626924740] [2022-04-06 18:58:38,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626924740] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:58:38,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:58:38,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 18:58:38,633 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:58:38,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [378296324] [2022-04-06 18:58:38,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [378296324] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:58:38,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:58:38,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 18:58:38,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558020113] [2022-04-06 18:58:38,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:58:38,634 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 18:58:38,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:58:38,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 18:58:38,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-04-06 18:58:38,634 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) [2022-04-06 18:58:43,015 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 [] [2022-04-06 18:58:45,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 18:58:47,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 18:58:51,166 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 [] [2022-04-06 18:58:52,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:58:52,645 INFO L93 Difference]: Finished difference Result 3468 states and 5241 transitions. [2022-04-06 18:58:52,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-06 18:58:52,646 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 [2022-04-06 18:58:52,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:58:52,663 INFO L225 Difference]: With dead ends: 3468 [2022-04-06 18:58:52,663 INFO L226 Difference]: Without dead ends: 3464 [2022-04-06 18:58:52,665 INFO L912 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 [2022-04-06 18:58:52,665 INFO L913 BasicCegarLoop]: 709 mSDtfsCounter, 1926 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 783 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 3224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-04-06 18:58:52,666 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 1233 Invalid, 3224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 2437 Invalid, 4 Unknown, 0 Unchecked, 12.9s Time] [2022-04-06 18:58:52,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-04-06 18:58:53,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 2974. [2022-04-06 18:58:53,228 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) [2022-04-06 18:58:53,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4359 transitions. [2022-04-06 18:58:53,239 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4359 transitions. Word has length 55 [2022-04-06 18:58:53,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:58:53,239 INFO L478 AbstractCegarLoop]: Abstraction has 2974 states and 4359 transitions. [2022-04-06 18:58:53,239 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) [2022-04-06 18:58:53,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4359 transitions. [2022-04-06 18:58:53,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-06 18:58:53,241 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:58:53,241 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:58:53,241 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-06 18:58:53,241 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:58:53,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:58:53,242 INFO L85 PathProgramCache]: Analyzing trace with hash 494864556, now seen corresponding path program 1 times [2022-04-06 18:58:53,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:58:53,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1625808700] [2022-04-06 18:58:53,242 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:58:53,242 INFO L85 PathProgramCache]: Analyzing trace with hash 494864556, now seen corresponding path program 2 times [2022-04-06 18:58:53,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:58:53,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908085527] [2022-04-06 18:58:53,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:58:53,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:58:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:53,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:58:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:53,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 18:58:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:53,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 18:58:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:53,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 18:58:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:53,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 18:58:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:53,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-06 18:58:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:53,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 18:58:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:53,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 18:58:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:58:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:58:53,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:58:53,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908085527] [2022-04-06 18:58:53,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908085527] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:58:53,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:58:53,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 18:58:53,850 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:58:53,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1625808700] [2022-04-06 18:58:53,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1625808700] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:58:53,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:58:53,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 18:58:53,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858308192] [2022-04-06 18:58:53,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:58:53,852 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 18:58:53,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:58:53,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 18:58:53,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-04-06 18:58:53,853 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) [2022-04-06 18:59:01,805 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 [] [2022-04-06 18:59:07,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:59:07,382 INFO L93 Difference]: Finished difference Result 4254 states and 6463 transitions. [2022-04-06 18:59:07,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-04-06 18:59:07,383 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 [2022-04-06 18:59:07,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:59:07,402 INFO L225 Difference]: With dead ends: 4254 [2022-04-06 18:59:07,402 INFO L226 Difference]: Without dead ends: 4246 [2022-04-06 18:59:07,404 INFO L912 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 [2022-04-06 18:59:07,406 INFO L913 BasicCegarLoop]: 1005 mSDtfsCounter, 3486 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 5609 mSolverCounterSat, 1605 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3537 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, 10.6s IncrementalHoareTripleChecker+Time [2022-04-06 18:59:07,406 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3537 Valid, 1903 Invalid, 7215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1605 Valid, 5609 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-04-06 18:59:07,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2022-04-06 18:59:07,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 3598. [2022-04-06 18:59:07,993 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) [2022-04-06 18:59:08,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5297 transitions. [2022-04-06 18:59:08,007 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5297 transitions. Word has length 56 [2022-04-06 18:59:08,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:59:08,007 INFO L478 AbstractCegarLoop]: Abstraction has 3598 states and 5297 transitions. [2022-04-06 18:59:08,007 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) [2022-04-06 18:59:08,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5297 transitions. [2022-04-06 18:59:08,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-04-06 18:59:08,009 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:59:08,009 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:59:08,009 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-06 18:59:08,009 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:59:08,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:59:08,010 INFO L85 PathProgramCache]: Analyzing trace with hash -582745306, now seen corresponding path program 1 times [2022-04-06 18:59:08,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:59:08,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [872697920] [2022-04-06 18:59:08,010 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:59:08,011 INFO L85 PathProgramCache]: Analyzing trace with hash -582745306, now seen corresponding path program 2 times [2022-04-06 18:59:08,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:59:08,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615319419] [2022-04-06 18:59:08,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:59:08,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:59:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:08,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:59:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:08,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 18:59:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:08,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 18:59:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:08,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 18:59:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:08,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 18:59:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:08,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-06 18:59:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:08,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-06 18:59:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:08,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:59:08,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:59:08,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615319419] [2022-04-06 18:59:08,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615319419] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:59:08,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:59:08,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 18:59:08,523 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:59:08,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [872697920] [2022-04-06 18:59:08,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [872697920] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:59:08,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:59:08,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 18:59:08,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479606102] [2022-04-06 18:59:08,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:59:08,523 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 18:59:08,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:59:08,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 18:59:08,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-04-06 18:59:08,525 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) [2022-04-06 18:59:13,888 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 [] [2022-04-06 18:59:18,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:59:18,906 INFO L93 Difference]: Finished difference Result 11208 states and 17196 transitions. [2022-04-06 18:59:18,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 18:59:18,907 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 [2022-04-06 18:59:18,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:59:18,945 INFO L225 Difference]: With dead ends: 11208 [2022-04-06 18:59:18,945 INFO L226 Difference]: Without dead ends: 7864 [2022-04-06 18:59:18,963 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-04-06 18:59:18,964 INFO L913 BasicCegarLoop]: 893 mSDtfsCounter, 3290 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 3252 mSolverCounterSat, 1246 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3363 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 4499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1246 IncrementalHoareTripleChecker+Valid, 3252 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:59:18,964 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3363 Valid, 1587 Invalid, 4499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1246 Valid, 3252 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-04-06 18:59:18,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7864 states. [2022-04-06 18:59:20,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7864 to 6946. [2022-04-06 18:59:20,090 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) [2022-04-06 18:59:20,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 10479 transitions. [2022-04-06 18:59:20,114 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 10479 transitions. Word has length 57 [2022-04-06 18:59:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:59:20,114 INFO L478 AbstractCegarLoop]: Abstraction has 6946 states and 10479 transitions. [2022-04-06 18:59:20,115 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) [2022-04-06 18:59:20,115 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 10479 transitions. [2022-04-06 18:59:20,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-06 18:59:20,116 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:59:20,116 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:59:20,116 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-06 18:59:20,117 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:59:20,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:59:20,117 INFO L85 PathProgramCache]: Analyzing trace with hash -466129244, now seen corresponding path program 1 times [2022-04-06 18:59:20,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:59:20,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [233560380] [2022-04-06 18:59:20,117 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:59:20,118 INFO L85 PathProgramCache]: Analyzing trace with hash -466129244, now seen corresponding path program 2 times [2022-04-06 18:59:20,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:59:20,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79643217] [2022-04-06 18:59:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:59:20,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:59:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:20,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:59:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:20,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 18:59:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:20,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 18:59:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:20,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 18:59:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:20,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 18:59:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:20,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-06 18:59:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:59:20,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:59:20,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79643217] [2022-04-06 18:59:20,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79643217] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:59:20,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:59:20,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 18:59:20,708 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:59:20,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [233560380] [2022-04-06 18:59:20,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [233560380] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:59:20,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:59:20,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 18:59:20,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646748171] [2022-04-06 18:59:20,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:59:20,708 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 18:59:20,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:59:20,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 18:59:20,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-04-06 18:59:20,709 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) [2022-04-06 18:59:27,880 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 [] [2022-04-06 18:59:35,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:59:35,506 INFO L93 Difference]: Finished difference Result 14677 states and 22415 transitions. [2022-04-06 18:59:35,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-04-06 18:59:35,507 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 [2022-04-06 18:59:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:59:35,546 INFO L225 Difference]: With dead ends: 14677 [2022-04-06 18:59:35,546 INFO L226 Difference]: Without dead ends: 8095 [2022-04-06 18:59:35,573 INFO L912 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 [2022-04-06 18:59:35,574 INFO L913 BasicCegarLoop]: 899 mSDtfsCounter, 5146 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 5511 mSolverCounterSat, 2185 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5190 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 7697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2185 IncrementalHoareTripleChecker+Valid, 5511 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:59:35,574 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5190 Valid, 1785 Invalid, 7697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2185 Valid, 5511 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2022-04-06 18:59:35,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8095 states. [2022-04-06 18:59:36,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8095 to 6937. [2022-04-06 18:59:36,795 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) [2022-04-06 18:59:36,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10458 transitions. [2022-04-06 18:59:36,818 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10458 transitions. Word has length 56 [2022-04-06 18:59:36,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:59:36,818 INFO L478 AbstractCegarLoop]: Abstraction has 6937 states and 10458 transitions. [2022-04-06 18:59:36,819 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) [2022-04-06 18:59:36,819 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10458 transitions. [2022-04-06 18:59:36,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-06 18:59:36,821 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:59:36,821 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:59:36,821 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-06 18:59:36,821 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:59:36,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:59:36,821 INFO L85 PathProgramCache]: Analyzing trace with hash 613167468, now seen corresponding path program 1 times [2022-04-06 18:59:36,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:59:36,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [413311725] [2022-04-06 18:59:36,822 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:59:36,822 INFO L85 PathProgramCache]: Analyzing trace with hash 613167468, now seen corresponding path program 2 times [2022-04-06 18:59:36,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:59:36,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831571305] [2022-04-06 18:59:36,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:59:36,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:59:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:37,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:59:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:37,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 18:59:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:37,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 18:59:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:37,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 18:59:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:37,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 18:59:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:37,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-06 18:59:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:37,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-06 18:59:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:37,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 18:59:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:59:37,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:59:37,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831571305] [2022-04-06 18:59:37,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831571305] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:59:37,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:59:37,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 18:59:37,414 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:59:37,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [413311725] [2022-04-06 18:59:37,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [413311725] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:59:37,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:59:37,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 18:59:37,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438471128] [2022-04-06 18:59:37,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:59:37,414 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 18:59:37,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:59:37,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 18:59:37,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-04-06 18:59:37,415 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) [2022-04-06 18:59:44,866 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 [] [2022-04-06 18:59:50,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:59:50,960 INFO L93 Difference]: Finished difference Result 7820 states and 12070 transitions. [2022-04-06 18:59:50,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-04-06 18:59:50,961 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 [2022-04-06 18:59:50,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:59:50,993 INFO L225 Difference]: With dead ends: 7820 [2022-04-06 18:59:50,993 INFO L226 Difference]: Without dead ends: 7815 [2022-04-06 18:59:50,997 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-04-06 18:59:50,997 INFO L913 BasicCegarLoop]: 988 mSDtfsCounter, 3648 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 4722 mSolverCounterSat, 1704 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3699 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 6427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1704 IncrementalHoareTripleChecker+Valid, 4722 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-04-06 18:59:50,998 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3699 Valid, 1777 Invalid, 6427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1704 Valid, 4722 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-04-06 18:59:51,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7815 states. [2022-04-06 18:59:52,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7815 to 6937. [2022-04-06 18:59:52,257 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) [2022-04-06 18:59:52,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10457 transitions. [2022-04-06 18:59:52,283 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10457 transitions. Word has length 58 [2022-04-06 18:59:52,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:59:52,283 INFO L478 AbstractCegarLoop]: Abstraction has 6937 states and 10457 transitions. [2022-04-06 18:59:52,284 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) [2022-04-06 18:59:52,284 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10457 transitions. [2022-04-06 18:59:52,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-06 18:59:52,285 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:59:52,285 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:59:52,285 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-06 18:59:52,286 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:59:52,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:59:52,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1929708227, now seen corresponding path program 1 times [2022-04-06 18:59:52,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:59:52,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1665905781] [2022-04-06 18:59:52,287 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:59:52,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1929708227, now seen corresponding path program 2 times [2022-04-06 18:59:52,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:59:52,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439089882] [2022-04-06 18:59:52,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:59:52,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:59:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:52,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:59:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:52,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 18:59:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:52,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 18:59:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:52,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 18:59:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:52,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 18:59:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:52,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-06 18:59:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:52,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 18:59:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:52,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 18:59:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:59:52,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:59:52,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:59:52,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439089882] [2022-04-06 18:59:52,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439089882] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:59:52,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:59:52,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 18:59:52,831 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:59:52,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1665905781] [2022-04-06 18:59:52,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1665905781] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:59:52,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:59:52,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 18:59:52,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142090742] [2022-04-06 18:59:52,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:59:52,832 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 18:59:52,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:59:52,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 18:59:52,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-04-06 18:59:52,833 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) [2022-04-06 19:00:00,820 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 [] [2022-04-06 19:00:04,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:00:04,587 INFO L93 Difference]: Finished difference Result 14740 states and 22518 transitions. [2022-04-06 19:00:04,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-06 19:00:04,587 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 [2022-04-06 19:00:04,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:00:04,618 INFO L225 Difference]: With dead ends: 14740 [2022-04-06 19:00:04,618 INFO L226 Difference]: Without dead ends: 7831 [2022-04-06 19:00:04,648 INFO L912 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 [2022-04-06 19:00:04,649 INFO L913 BasicCegarLoop]: 699 mSDtfsCounter, 1906 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 4672 mSolverCounterSat, 821 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1938 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 5494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 821 IncrementalHoareTripleChecker+Valid, 4672 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-04-06 19:00:04,649 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1938 Valid, 1813 Invalid, 5494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [821 Valid, 4672 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-04-06 19:00:04,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7831 states. [2022-04-06 19:00:06,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7831 to 6937. [2022-04-06 19:00:06,029 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) [2022-04-06 19:00:06,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10456 transitions. [2022-04-06 19:00:06,057 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10456 transitions. Word has length 58 [2022-04-06 19:00:06,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:00:06,057 INFO L478 AbstractCegarLoop]: Abstraction has 6937 states and 10456 transitions. [2022-04-06 19:00:06,057 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) [2022-04-06 19:00:06,057 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10456 transitions. [2022-04-06 19:00:06,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-06 19:00:06,059 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:00:06,059 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:00:06,059 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-06 19:00:06,059 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:00:06,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:00:06,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1708625388, now seen corresponding path program 1 times [2022-04-06 19:00:06,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:00:06,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [691119115] [2022-04-06 19:00:06,060 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 19:00:06,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1708625388, now seen corresponding path program 2 times [2022-04-06 19:00:06,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:00:06,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323767354] [2022-04-06 19:00:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:00:06,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:00:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:06,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:00:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:06,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:00:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:06,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 19:00:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:06,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:00:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:06,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:00:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:06,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-06 19:00:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:06,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-06 19:00:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:06,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:00:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:00:06,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:00:06,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323767354] [2022-04-06 19:00:06,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323767354] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:00:06,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:00:06,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 19:00:06,806 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:00:06,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [691119115] [2022-04-06 19:00:06,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [691119115] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:00:06,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:00:06,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 19:00:06,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874092313] [2022-04-06 19:00:06,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:00:06,807 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 19:00:06,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:00:06,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 19:00:06,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-04-06 19:00:06,808 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) [2022-04-06 19:00:13,979 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 [] [2022-04-06 19:00:17,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:00:17,732 INFO L93 Difference]: Finished difference Result 14697 states and 22709 transitions. [2022-04-06 19:00:17,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-06 19:00:17,733 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 [2022-04-06 19:00:17,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:00:17,767 INFO L225 Difference]: With dead ends: 14697 [2022-04-06 19:00:17,767 INFO L226 Difference]: Without dead ends: 7729 [2022-04-06 19:00:17,801 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-04-06 19:00:17,801 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 1887 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 3883 mSolverCounterSat, 743 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s 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, 8.3s IncrementalHoareTripleChecker+Time [2022-04-06 19:00:17,801 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1917 Valid, 1662 Invalid, 4627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 3883 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-04-06 19:00:17,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7729 states. [2022-04-06 19:00:19,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7729 to 6958. [2022-04-06 19:00:19,141 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) [2022-04-06 19:00:19,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6958 states to 6958 states and 10477 transitions. [2022-04-06 19:00:19,168 INFO L78 Accepts]: Start accepts. Automaton has 6958 states and 10477 transitions. Word has length 62 [2022-04-06 19:00:19,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:00:19,168 INFO L478 AbstractCegarLoop]: Abstraction has 6958 states and 10477 transitions. [2022-04-06 19:00:19,168 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) [2022-04-06 19:00:19,168 INFO L276 IsEmpty]: Start isEmpty. Operand 6958 states and 10477 transitions. [2022-04-06 19:00:19,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 19:00:19,170 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:00:19,170 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:00:19,170 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-06 19:00:19,170 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:00:19,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:00:19,170 INFO L85 PathProgramCache]: Analyzing trace with hash -427353988, now seen corresponding path program 1 times [2022-04-06 19:00:19,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:00:19,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [168267228] [2022-04-06 19:00:19,188 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:00:19,188 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-04-06 19:00:19,188 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:00:19,188 INFO L85 PathProgramCache]: Analyzing trace with hash -427353988, now seen corresponding path program 2 times [2022-04-06 19:00:19,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:00:19,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784046870] [2022-04-06 19:00:19,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:00:19,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:00:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:19,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:00:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:19,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:00:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:19,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 19:00:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:19,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 19:00:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:00:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:19,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 19:00:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:19,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-06 19:00:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:19,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:00:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:00:19,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:00:19,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784046870] [2022-04-06 19:00:19,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784046870] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:00:19,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101028930] [2022-04-06 19:00:19,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:00:19,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:00:19,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:00:19,939 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) [2022-04-06 19:00:19,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 19:00:24,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 19:00:24,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:00:24,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 19:00:24,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:00:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:00:25,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 19:00:25,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:00:25,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101028930] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 19:00:25,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 19:00:25,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 18 [2022-04-06 19:00:25,369 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:00:25,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [168267228] [2022-04-06 19:00:25,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [168267228] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:00:25,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:00:25,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 19:00:25,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472165390] [2022-04-06 19:00:25,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:00:25,370 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 19:00:25,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:00:25,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 19:00:25,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:00:25,371 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) [2022-04-06 19:00:31,610 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 [] [2022-04-06 19:00:33,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:00:38,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:00:42,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:00:42,658 INFO L93 Difference]: Finished difference Result 14738 states and 22750 transitions. [2022-04-06 19:00:42,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-06 19:00:42,659 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 [2022-04-06 19:00:42,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:00:42,693 INFO L225 Difference]: With dead ends: 14738 [2022-04-06 19:00:42,693 INFO L226 Difference]: Without dead ends: 7750 [2022-04-06 19:00:42,725 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2022-04-06 19:00:42,725 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 2786 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 4106 mSolverCounterSat, 1218 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2816 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 5327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1218 IncrementalHoareTripleChecker+Valid, 4106 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-04-06 19:00:42,725 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2816 Valid, 1720 Invalid, 5327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1218 Valid, 4106 Invalid, 3 Unknown, 0 Unchecked, 14.5s Time] [2022-04-06 19:00:42,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2022-04-06 19:00:44,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 6979. [2022-04-06 19:00:44,129 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) [2022-04-06 19:00:44,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 10498 transitions. [2022-04-06 19:00:44,153 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 10498 transitions. Word has length 63 [2022-04-06 19:00:44,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:00:44,153 INFO L478 AbstractCegarLoop]: Abstraction has 6979 states and 10498 transitions. [2022-04-06 19:00:44,153 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) [2022-04-06 19:00:44,153 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 10498 transitions. [2022-04-06 19:00:44,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-04-06 19:00:44,155 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:00:44,155 INFO L499 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, 1] [2022-04-06 19:00:44,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-06 19:00:44,363 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 [2022-04-06 19:00:44,364 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:00:44,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:00:44,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1815946881, now seen corresponding path program 1 times [2022-04-06 19:00:44,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:00:44,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1079438730] [2022-04-06 19:00:44,366 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:00:44,366 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-04-06 19:00:44,366 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:00:44,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1815946881, now seen corresponding path program 2 times [2022-04-06 19:00:44,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:00:44,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463520893] [2022-04-06 19:00:44,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:00:44,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:00:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:44,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:00:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:44,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:00:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:44,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-06 19:00:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:45,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 19:00:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:45,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:00:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:45,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 19:00:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:45,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-06 19:00:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:45,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:00:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:00:45,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:00:45,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:00:45,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463520893] [2022-04-06 19:00:45,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463520893] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:00:45,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713571290] [2022-04-06 19:00:45,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:00:45,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:00:45,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:00:45,190 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) [2022-04-06 19:00:45,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 19:01:12,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 19:01:12,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:01:12,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 2832 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 19:01:12,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:01:12,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:01:12,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 19:01:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:01:12,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713571290] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 19:01:12,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 19:01:12,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 21 [2022-04-06 19:01:12,858 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:01:12,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1079438730] [2022-04-06 19:01:12,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1079438730] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:01:12,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:01:12,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 19:01:12,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316923997] [2022-04-06 19:01:12,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:01:12,860 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 19:01:12,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:01:12,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 19:01:12,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-04-06 19:01:12,861 INFO L87 Difference]: Start difference. First operand 6979 states and 10498 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 19:01:21,872 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 [] [2022-04-06 19:01:26,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:01:26,988 INFO L93 Difference]: Finished difference Result 14779 states and 22791 transitions. [2022-04-06 19:01:26,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 19:01:26,990 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2022-04-06 19:01:26,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:01:27,027 INFO L225 Difference]: With dead ends: 14779 [2022-04-06 19:01:27,027 INFO L226 Difference]: Without dead ends: 7771 [2022-04-06 19:01:27,060 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2022-04-06 19:01:27,061 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 1590 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 5787 mSolverCounterSat, 682 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 6470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 682 IncrementalHoareTripleChecker+Valid, 5787 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:01:27,061 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1620 Valid, 2014 Invalid, 6470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [682 Valid, 5787 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2022-04-06 19:01:27,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7771 states. [2022-04-06 19:01:28,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7771 to 7000. [2022-04-06 19:01:28,573 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) [2022-04-06 19:01:28,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7000 states to 7000 states and 10519 transitions. [2022-04-06 19:01:28,592 INFO L78 Accepts]: Start accepts. Automaton has 7000 states and 10519 transitions. Word has length 65 [2022-04-06 19:01:28,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:01:28,592 INFO L478 AbstractCegarLoop]: Abstraction has 7000 states and 10519 transitions. [2022-04-06 19:01:28,592 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 19:01:28,592 INFO L276 IsEmpty]: Start isEmpty. Operand 7000 states and 10519 transitions. [2022-04-06 19:01:28,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-04-06 19:01:28,594 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:01:28,594 INFO L499 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] [2022-04-06 19:01:28,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 19:01:28,819 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 [2022-04-06 19:01:28,820 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:01:28,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:01:28,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1900018052, now seen corresponding path program 3 times [2022-04-06 19:01:28,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:01:28,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1461224723] [2022-04-06 19:01:28,821 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:01:28,821 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-04-06 19:01:28,821 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:01:28,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1900018052, now seen corresponding path program 4 times [2022-04-06 19:01:28,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:01:28,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902597039] [2022-04-06 19:01:28,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:01:28,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:01:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:01:29,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:01:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:01:29,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:01:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:01:29,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 19:01:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:01:29,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 19:01:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:01:29,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:01:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:01:29,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-06 19:01:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:01:29,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-06 19:01:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:01:29,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:01:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:01:29,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:01:29,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:01:29,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902597039] [2022-04-06 19:01:29,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902597039] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:01:29,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844383524] [2022-04-06 19:01:29,656 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 19:01:29,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:01:29,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:01:29,660 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) [2022-04-06 19:01:29,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 19:01:30,601 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 19:01:30,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:01:30,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 2846 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-06 19:01:30,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:01:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:01:30,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 19:01:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:01:31,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844383524] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 19:01:31,423 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 19:01:31,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 7] total 24 [2022-04-06 19:01:31,424 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:01:31,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1461224723] [2022-04-06 19:01:31,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1461224723] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:01:31,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:01:31,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 19:01:31,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261553065] [2022-04-06 19:01:31,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:01:31,425 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 19:01:31,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:01:31,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 19:01:31,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-04-06 19:01:31,426 INFO L87 Difference]: Start difference. First operand 7000 states and 10519 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 19:01:41,657 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 [] [2022-04-06 19:01:46,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:01:46,821 INFO L93 Difference]: Finished difference Result 14820 states and 22832 transitions. [2022-04-06 19:01:46,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 19:01:46,821 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2022-04-06 19:01:46,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:01:46,852 INFO L225 Difference]: With dead ends: 14820 [2022-04-06 19:01:46,852 INFO L226 Difference]: Without dead ends: 7792 [2022-04-06 19:01:46,881 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=250, Invalid=1010, Unknown=0, NotChecked=0, Total=1260 [2022-04-06 19:01:46,882 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 1664 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 6390 mSolverCounterSat, 678 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 7069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 678 IncrementalHoareTripleChecker+Valid, 6390 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-04-06 19:01:46,882 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1694 Valid, 2140 Invalid, 7069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [678 Valid, 6390 Invalid, 1 Unknown, 0 Unchecked, 12.4s Time] [2022-04-06 19:01:46,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2022-04-06 19:01:48,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7021. [2022-04-06 19:01:48,596 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) [2022-04-06 19:01:48,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 10540 transitions. [2022-04-06 19:01:48,613 INFO L78 Accepts]: Start accepts. Automaton has 7021 states and 10540 transitions. Word has length 65 [2022-04-06 19:01:48,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:01:48,613 INFO L478 AbstractCegarLoop]: Abstraction has 7021 states and 10540 transitions. [2022-04-06 19:01:48,614 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 19:01:48,614 INFO L276 IsEmpty]: Start isEmpty. Operand 7021 states and 10540 transitions. [2022-04-06 19:01:48,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-06 19:01:48,615 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:01:48,615 INFO L499 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, 1] [2022-04-06 19:01:48,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 19:01:48,836 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 [2022-04-06 19:01:48,836 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:01:48,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:01:48,837 INFO L85 PathProgramCache]: Analyzing trace with hash -369978239, now seen corresponding path program 3 times [2022-04-06 19:01:48,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:01:48,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [606657308] [2022-04-06 19:01:48,838 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:01:48,838 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-04-06 19:01:48,838 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:01:48,838 INFO L85 PathProgramCache]: Analyzing trace with hash -369978239, now seen corresponding path program 4 times [2022-04-06 19:01:48,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:01:48,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726370630] [2022-04-06 19:01:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:01:48,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:01:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:01:49,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:01:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:01:49,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:01:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:01:49,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:01:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:01:49,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 19:01:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:01:49,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:01:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:01:49,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-06 19:01:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:01:49,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-06 19:01:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:01:49,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:01:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:01:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:01:49,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:01:49,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726370630] [2022-04-06 19:01:49,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726370630] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:01:49,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709895009] [2022-04-06 19:01:49,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 19:01:49,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:01:49,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:01:49,720 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) [2022-04-06 19:01:49,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 19:01:50,813 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 19:01:50,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:01:50,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 2862 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 19:01:50,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:01:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:01:51,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 19:01:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:01:51,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709895009] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 19:01:51,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 19:01:51,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8, 8] total 27 [2022-04-06 19:01:51,663 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:01:51,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [606657308] [2022-04-06 19:01:51,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [606657308] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:01:51,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:01:51,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 19:01:51,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210236612] [2022-04-06 19:01:51,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:01:51,664 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 19:01:51,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:01:51,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 19:01:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2022-04-06 19:01:51,665 INFO L87 Difference]: Start difference. First operand 7021 states and 10540 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 8 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) [2022-04-06 19:02:02,337 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 [] [2022-04-06 19:02:08,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:02:08,183 INFO L93 Difference]: Finished difference Result 14861 states and 22873 transitions. [2022-04-06 19:02:08,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-06 19:02:08,184 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 8 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 [2022-04-06 19:02:08,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:02:08,211 INFO L225 Difference]: With dead ends: 14861 [2022-04-06 19:02:08,211 INFO L226 Difference]: Without dead ends: 7813 [2022-04-06 19:02:08,236 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=298, Invalid=1262, Unknown=0, NotChecked=0, Total=1560 [2022-04-06 19:02:08,237 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 1478 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 6784 mSolverCounterSat, 620 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 7405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 6784 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-04-06 19:02:08,237 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1508 Valid, 2224 Invalid, 7405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 6784 Invalid, 1 Unknown, 0 Unchecked, 13.3s Time] [2022-04-06 19:02:08,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7813 states. [2022-04-06 19:02:09,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7813 to 7042. [2022-04-06 19:02:09,662 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) [2022-04-06 19:02:09,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7042 states to 7042 states and 10561 transitions. [2022-04-06 19:02:09,681 INFO L78 Accepts]: Start accepts. Automaton has 7042 states and 10561 transitions. Word has length 67 [2022-04-06 19:02:09,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:02:09,681 INFO L478 AbstractCegarLoop]: Abstraction has 7042 states and 10561 transitions. [2022-04-06 19:02:09,681 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 8 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) [2022-04-06 19:02:09,681 INFO L276 IsEmpty]: Start isEmpty. Operand 7042 states and 10561 transitions. [2022-04-06 19:02:09,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-06 19:02:09,683 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:02:09,683 INFO L499 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] [2022-04-06 19:02:09,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 19:02:09,895 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 [2022-04-06 19:02:09,895 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:02:09,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:02:09,896 INFO L85 PathProgramCache]: Analyzing trace with hash 209024124, now seen corresponding path program 5 times [2022-04-06 19:02:09,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:02:09,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [928557745] [2022-04-06 19:02:09,897 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:02:09,897 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-04-06 19:02:09,897 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:02:09,897 INFO L85 PathProgramCache]: Analyzing trace with hash 209024124, now seen corresponding path program 6 times [2022-04-06 19:02:09,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:02:09,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137514093] [2022-04-06 19:02:09,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:02:09,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:02:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:02:10,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:02:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:02:10,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:02:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:02:10,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 19:02:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:02:10,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 19:02:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:02:10,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:02:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:02:10,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-06 19:02:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:02:10,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-06 19:02:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:02:10,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:02:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:02:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:02:10,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:02:10,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137514093] [2022-04-06 19:02:10,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137514093] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:02:10,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441262699] [2022-04-06 19:02:10,924 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 19:02:10,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:02:10,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:02:10,927 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) [2022-04-06 19:02:10,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 19:03:13,311 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-04-06 19:03:13,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:03:13,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 2876 conjuncts, 42 conjunts are in the unsatisfiable core [2022-04-06 19:03:13,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:03:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:03:13,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 19:03:14,478 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:03:14,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441262699] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 19:03:14,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 19:03:14,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 9] total 31 [2022-04-06 19:03:14,479 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:03:14,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [928557745] [2022-04-06 19:03:14,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [928557745] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:03:14,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:03:14,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-04-06 19:03:14,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729815484] [2022-04-06 19:03:14,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:03:14,480 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-06 19:03:14,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:03:14,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-06 19:03:14,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=763, Unknown=0, NotChecked=0, Total=930 [2022-04-06 19:03:14,481 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) [2022-04-06 19:03:24,986 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 [] [2022-04-06 19:03:30,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:03:30,715 INFO L93 Difference]: Finished difference Result 14902 states and 22914 transitions. [2022-04-06 19:03:30,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-04-06 19:03:30,719 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 [2022-04-06 19:03:30,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:03:30,744 INFO L225 Difference]: With dead ends: 14902 [2022-04-06 19:03:30,744 INFO L226 Difference]: Without dead ends: 7834 [2022-04-06 19:03:30,770 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=358, Invalid=1622, Unknown=0, NotChecked=0, Total=1980 [2022-04-06 19:03:30,771 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 1729 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 6388 mSolverCounterSat, 775 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 7164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 6388 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-04-06 19:03:30,771 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1759 Valid, 2271 Invalid, 7164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 6388 Invalid, 1 Unknown, 0 Unchecked, 12.8s Time] [2022-04-06 19:03:30,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7834 states. [2022-04-06 19:03:32,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7834 to 7063. [2022-04-06 19:03:32,281 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) [2022-04-06 19:03:32,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 10582 transitions. [2022-04-06 19:03:32,304 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 10582 transitions. Word has length 67 [2022-04-06 19:03:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:03:32,306 INFO L478 AbstractCegarLoop]: Abstraction has 7063 states and 10582 transitions. [2022-04-06 19:03:32,306 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) [2022-04-06 19:03:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 10582 transitions. [2022-04-06 19:03:32,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 19:03:32,308 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:03:32,308 INFO L499 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, 1] [2022-04-06 19:03:32,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 19:03:32,525 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 [2022-04-06 19:03:32,526 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:03:32,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:03:32,526 INFO L85 PathProgramCache]: Analyzing trace with hash -805010815, now seen corresponding path program 5 times [2022-04-06 19:03:32,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:03:32,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1821156009] [2022-04-06 19:03:32,527 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:03:32,527 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-04-06 19:03:32,527 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:03:32,527 INFO L85 PathProgramCache]: Analyzing trace with hash -805010815, now seen corresponding path program 6 times [2022-04-06 19:03:32,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:03:32,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507820074] [2022-04-06 19:03:32,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:03:32,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:03:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:32,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:03:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:32,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:03:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:33,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 19:03:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:33,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 19:03:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:33,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:03:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:33,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-06 19:03:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:33,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-06 19:03:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:33,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:03:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:33,626 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:03:33,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:03:33,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507820074] [2022-04-06 19:03:33,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507820074] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:03:33,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284747160] [2022-04-06 19:03:33,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 19:03:33,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:03:33,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:03:33,628 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) [2022-04-06 19:03:33,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 19:04:47,835 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-04-06 19:04:47,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:47,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 2892 conjuncts, 33 conjunts are in the unsatisfiable core [2022-04-06 19:04:47,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:48,283 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:48,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 19:04:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:48,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284747160] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 19:04:48,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 19:04:48,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 10] total 34 [2022-04-06 19:04:48,942 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:48,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1821156009] [2022-04-06 19:04:48,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1821156009] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:48,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:48,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 19:04:48,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187468892] [2022-04-06 19:04:48,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:48,943 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 19:04:48,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:48,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 19:04:48,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=923, Unknown=0, NotChecked=0, Total=1122 [2022-04-06 19:04:48,944 INFO L87 Difference]: Start difference. First operand 7063 states and 10582 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 10 states have internal predecessors, (51), 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) [2022-04-06 19:04:58,570 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 [] [2022-04-06 19:05:03,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:05:03,218 INFO L93 Difference]: Finished difference Result 14943 states and 22955 transitions. [2022-04-06 19:05:03,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-04-06 19:05:03,219 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 10 states have internal predecessors, (51), 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 69 [2022-04-06 19:05:03,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:05:03,245 INFO L225 Difference]: With dead ends: 14943 [2022-04-06 19:05:03,245 INFO L226 Difference]: Without dead ends: 7855 [2022-04-06 19:05:03,268 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=418, Invalid=1934, Unknown=0, NotChecked=0, Total=2352 [2022-04-06 19:05:03,268 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 1980 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 4663 mSolverCounterSat, 891 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 5555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 891 IncrementalHoareTripleChecker+Valid, 4663 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-04-06 19:05:03,268 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2010 Valid, 1903 Invalid, 5555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [891 Valid, 4663 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2022-04-06 19:05:03,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7855 states. [2022-04-06 19:05:04,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7855 to 7084. [2022-04-06 19:05:04,904 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) [2022-04-06 19:05:04,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7084 states to 7084 states and 10603 transitions. [2022-04-06 19:05:04,923 INFO L78 Accepts]: Start accepts. Automaton has 7084 states and 10603 transitions. Word has length 69 [2022-04-06 19:05:04,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:05:04,923 INFO L478 AbstractCegarLoop]: Abstraction has 7084 states and 10603 transitions. [2022-04-06 19:05:04,924 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 10 states have internal predecessors, (51), 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) [2022-04-06 19:05:04,924 INFO L276 IsEmpty]: Start isEmpty. Operand 7084 states and 10603 transitions. [2022-04-06 19:05:04,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 19:05:04,925 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:05:04,925 INFO L499 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] [2022-04-06 19:05:04,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-04-06 19:05:05,139 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 [2022-04-06 19:05:05,139 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:05:05,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:05:05,140 INFO L85 PathProgramCache]: Analyzing trace with hash -226008452, now seen corresponding path program 7 times [2022-04-06 19:05:05,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:05,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2146180814] [2022-04-06 19:05:05,141 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:05:05,141 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-04-06 19:05:05,141 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:05:05,141 INFO L85 PathProgramCache]: Analyzing trace with hash -226008452, now seen corresponding path program 8 times [2022-04-06 19:05:05,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:05:05,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954636428] [2022-04-06 19:05:05,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:05:05,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:05:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:05,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:05:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:05,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:05:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:05,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 19:05:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:06,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-06 19:05:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:06,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:06,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-06 19:05:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:06,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-06 19:05:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:05:06,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:05:06,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954636428] [2022-04-06 19:05:06,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954636428] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:05:06,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524471236] [2022-04-06 19:05:06,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:05:06,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:05:06,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:05:06,255 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) [2022-04-06 19:05:06,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 19:05:09,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 19:05:09,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:05:09,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 2906 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-06 19:05:09,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:05:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:05:10,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 19:05:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:05:10,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524471236] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 19:05:10,813 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 19:05:10,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 36 [2022-04-06 19:05:10,813 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:05:10,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2146180814] [2022-04-06 19:05:10,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2146180814] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:05:10,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:05:10,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 19:05:10,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587982896] [2022-04-06 19:05:10,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:05:10,814 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 19:05:10,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:10,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 19:05:10,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1023, Unknown=0, NotChecked=0, Total=1260 [2022-04-06 19:05:10,815 INFO L87 Difference]: Start difference. First operand 7084 states and 10603 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 11 states have internal predecessors, (51), 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) [2022-04-06 19:05:18,959 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 [] [2022-04-06 19:05:21,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:05:26,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:05:32,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:05:32,046 INFO L93 Difference]: Finished difference Result 14984 states and 22996 transitions. [2022-04-06 19:05:32,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-04-06 19:05:32,046 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 11 states have internal predecessors, (51), 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 69 [2022-04-06 19:05:32,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:05:32,078 INFO L225 Difference]: With dead ends: 14984 [2022-04-06 19:05:32,079 INFO L226 Difference]: Without dead ends: 7876 [2022-04-06 19:05:32,105 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=484, Invalid=2168, Unknown=0, NotChecked=0, Total=2652 [2022-04-06 19:05:32,105 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 2000 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 6687 mSolverCounterSat, 911 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2030 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 7601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 911 IncrementalHoareTripleChecker+Valid, 6687 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-04-06 19:05:32,106 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2030 Valid, 2272 Invalid, 7601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [911 Valid, 6687 Invalid, 3 Unknown, 0 Unchecked, 17.5s Time] [2022-04-06 19:05:32,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7876 states. [2022-04-06 19:05:33,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7876 to 7105. [2022-04-06 19:05:33,659 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) [2022-04-06 19:05:33,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 10624 transitions. [2022-04-06 19:05:33,679 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 10624 transitions. Word has length 69 [2022-04-06 19:05:33,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:05:33,679 INFO L478 AbstractCegarLoop]: Abstraction has 7105 states and 10624 transitions. [2022-04-06 19:05:33,680 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 11 states have internal predecessors, (51), 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) [2022-04-06 19:05:33,680 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 10624 transitions. [2022-04-06 19:05:33,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-06 19:05:33,680 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:05:33,681 INFO L499 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] [2022-04-06 19:05:33,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-06 19:05:33,881 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 [2022-04-06 19:05:33,881 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:05:33,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:05:33,882 INFO L85 PathProgramCache]: Analyzing trace with hash -271460884, now seen corresponding path program 9 times [2022-04-06 19:05:33,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:33,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [463374241] [2022-04-06 19:05:33,883 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:05:33,883 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-04-06 19:05:33,883 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:05:33,883 INFO L85 PathProgramCache]: Analyzing trace with hash -271460884, now seen corresponding path program 10 times [2022-04-06 19:05:33,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:05:33,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175974536] [2022-04-06 19:05:33,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:05:33,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:05:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:34,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:05:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:34,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:05:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:34,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 19:05:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:34,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-06 19:05:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:34,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:34,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-06 19:05:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:34,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-06 19:05:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:34,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:05:35,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:05:35,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175974536] [2022-04-06 19:05:35,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175974536] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:05:35,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827007737] [2022-04-06 19:05:35,013 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 19:05:35,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:05:35,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:05:35,014 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) [2022-04-06 19:05:35,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-06 19:05:36,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 19:05:36,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:05:36,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 2921 conjuncts, 22 conjunts are in the unsatisfiable core [2022-04-06 19:05:36,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:05:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:05:36,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 19:05:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:05:37,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827007737] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 19:05:37,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 19:05:37,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12, 12] total 39 [2022-04-06 19:05:37,729 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:05:37,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [463374241] [2022-04-06 19:05:37,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [463374241] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:05:37,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:05:37,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-06 19:05:37,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306242983] [2022-04-06 19:05:37,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:05:37,730 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 19:05:37,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:37,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 19:05:37,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1195, Unknown=0, NotChecked=0, Total=1482 [2022-04-06 19:05:37,731 INFO L87 Difference]: Start difference. First operand 7105 states and 10624 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 12 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) [2022-04-06 19:05:51,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:05:57,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:05:57,596 INFO L93 Difference]: Finished difference Result 15025 states and 23037 transitions. [2022-04-06 19:05:57,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-04-06 19:05:57,596 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 12 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 [2022-04-06 19:05:57,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:05:57,621 INFO L225 Difference]: With dead ends: 15025 [2022-04-06 19:05:57,621 INFO L226 Difference]: Without dead ends: 7897 [2022-04-06 19:05:57,640 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=560, Invalid=2520, Unknown=0, NotChecked=0, Total=3080 [2022-04-06 19:05:57,641 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 1875 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 8512 mSolverCounterSat, 774 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 2766 SdHoareTripleChecker+Invalid, 9287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 8512 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:05:57,641 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1905 Valid, 2766 Invalid, 9287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 8512 Invalid, 1 Unknown, 0 Unchecked, 16.0s Time] [2022-04-06 19:05:57,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7897 states. [2022-04-06 19:05:59,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7897 to 7126. [2022-04-06 19:05:59,173 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) [2022-04-06 19:05:59,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 10645 transitions. [2022-04-06 19:05:59,191 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 10645 transitions. Word has length 70 [2022-04-06 19:05:59,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:05:59,191 INFO L478 AbstractCegarLoop]: Abstraction has 7126 states and 10645 transitions. [2022-04-06 19:05:59,192 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 12 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) [2022-04-06 19:05:59,192 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 10645 transitions. [2022-04-06 19:05:59,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-06 19:05:59,192 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:05:59,193 INFO L499 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] [2022-04-06 19:05:59,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-06 19:05:59,393 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 [2022-04-06 19:05:59,393 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:05:59,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:05:59,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1680486276, now seen corresponding path program 11 times [2022-04-06 19:05:59,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:59,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [292589350] [2022-04-06 19:05:59,395 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:05:59,395 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-04-06 19:05:59,395 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:05:59,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1680486276, now seen corresponding path program 12 times [2022-04-06 19:05:59,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:05:59,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382327634] [2022-04-06 19:05:59,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:05:59,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:05:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:59,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:05:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:59,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:05:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:00,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 19:06:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:00,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:06:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:00,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:06:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:00,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-06 19:06:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:00,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-06 19:06:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:00,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:06:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:00,562 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:06:00,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:06:00,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382327634] [2022-04-06 19:06:00,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382327634] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:06:00,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905038047] [2022-04-06 19:06:00,563 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 19:06:00,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:06:00,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:06:00,564 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) [2022-04-06 19:06:00,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-06 19:06:31,686 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-04-06 19:06:31,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:06:31,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 2936 conjuncts, 49 conjunts are in the unsatisfiable core [2022-04-06 19:06:31,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:06:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:06:32,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 19:06:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:06:33,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905038047] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 19:06:33,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 19:06:33,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14, 13] total 43 [2022-04-06 19:06:33,274 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:06:33,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [292589350] [2022-04-06 19:06:33,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [292589350] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:06:33,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:06:33,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 19:06:33,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266093294] [2022-04-06 19:06:33,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:06:33,275 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 19:06:33,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:06:33,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 19:06:33,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1475, Unknown=0, NotChecked=0, Total=1806 [2022-04-06 19:06:33,276 INFO L87 Difference]: Start difference. First operand 7126 states and 10645 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 13 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) [2022-04-06 19:06:41,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:06:43,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:06:45,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:06:47,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:06:52,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:06:58,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:06:58,459 INFO L93 Difference]: Finished difference Result 15066 states and 23078 transitions. [2022-04-06 19:06:58,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-04-06 19:06:58,459 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 13 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 [2022-04-06 19:06:58,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:06:58,489 INFO L225 Difference]: With dead ends: 15066 [2022-04-06 19:06:58,489 INFO L226 Difference]: Without dead ends: 7918 [2022-04-06 19:06:58,512 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=640, Invalid=3020, Unknown=0, NotChecked=0, Total=3660 [2022-04-06 19:06:58,512 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 1971 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 6082 mSolverCounterSat, 905 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2001 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 6992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 905 IncrementalHoareTripleChecker+Valid, 6082 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:06:58,513 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2001 Valid, 2088 Invalid, 6992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [905 Valid, 6082 Invalid, 5 Unknown, 0 Unchecked, 21.1s Time] [2022-04-06 19:06:58,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7918 states. [2022-04-06 19:07:00,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7918 to 7147. [2022-04-06 19:07:00,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7147 states, 5743 states have (on average 1.4351384293923037) internal successors, (8242), 5893 states have internal predecessors, (8242), 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) [2022-04-06 19:07:00,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 10666 transitions. [2022-04-06 19:07:00,192 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 10666 transitions. Word has length 71 [2022-04-06 19:07:00,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:07:00,192 INFO L478 AbstractCegarLoop]: Abstraction has 7147 states and 10666 transitions. [2022-04-06 19:07:00,192 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 13 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) [2022-04-06 19:07:00,192 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 10666 transitions. [2022-04-06 19:07:00,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-04-06 19:07:00,193 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:07:00,193 INFO L499 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:07:00,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-06 19:07:00,400 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:07:00,400 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:07:00,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:07:00,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1884366828, now seen corresponding path program 13 times [2022-04-06 19:07:00,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:07:00,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1766633589] [2022-04-06 19:07:00,402 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:07:00,402 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-04-06 19:07:00,402 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:07:00,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1884366828, now seen corresponding path program 14 times [2022-04-06 19:07:00,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:07:00,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896424452] [2022-04-06 19:07:00,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:07:00,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:07:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:00,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:07:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:00,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:07:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:01,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 19:07:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:01,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 19:07:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:01,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:07:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:01,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-06 19:07:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:01,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-06 19:07:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:01,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:07:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:01,700 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:07:01,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:07:01,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896424452] [2022-04-06 19:07:01,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896424452] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:07:01,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534358557] [2022-04-06 19:07:01,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:07:01,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:07:01,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:07:01,703 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 19:07:01,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-06 19:07:05,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 19:07:05,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:07:05,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 26 conjunts are in the unsatisfiable core [2022-04-06 19:07:05,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:07:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:07:05,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 19:07:07,535 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:07:07,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534358557] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 19:07:07,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 19:07:07,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 14] total 45 [2022-04-06 19:07:07,536 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:07:07,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1766633589] [2022-04-06 19:07:07,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1766633589] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:07:07,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:07:07,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-04-06 19:07:07,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038353573] [2022-04-06 19:07:07,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:07:07,536 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-04-06 19:07:07,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:07:07,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-04-06 19:07:07,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=1597, Unknown=0, NotChecked=0, Total=1980 [2022-04-06 19:07:07,537 INFO L87 Difference]: Start difference. First operand 7147 states and 10666 transitions. Second operand has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 14 states have internal predecessors, (54), 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) [2022-04-06 19:07:17,074 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:07:19,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:07:21,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:07:27,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:07:33,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:07:33,797 INFO L93 Difference]: Finished difference Result 15107 states and 23119 transitions. [2022-04-06 19:07:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-04-06 19:07:33,798 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 14 states have internal predecessors, (54), 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 72 [2022-04-06 19:07:33,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:07:33,824 INFO L225 Difference]: With dead ends: 15107 [2022-04-06 19:07:33,824 INFO L226 Difference]: Without dead ends: 7939 [2022-04-06 19:07:33,848 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=726, Invalid=3306, Unknown=0, NotChecked=0, Total=4032 [2022-04-06 19:07:33,849 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 2038 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 7316 mSolverCounterSat, 901 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2068 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 8221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 901 IncrementalHoareTripleChecker+Valid, 7316 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2022-04-06 19:07:33,849 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2068 Valid, 2408 Invalid, 8221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [901 Valid, 7316 Invalid, 4 Unknown, 0 Unchecked, 21.7s Time] [2022-04-06 19:07:33,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7939 states. [2022-04-06 19:07:35,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7939 to 7168. [2022-04-06 19:07:35,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7168 states, 5764 states have (on average 1.4335530881332408) internal successors, (8263), 5914 states have internal predecessors, (8263), 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) [2022-04-06 19:07:35,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7168 states to 7168 states and 10687 transitions. [2022-04-06 19:07:35,519 INFO L78 Accepts]: Start accepts. Automaton has 7168 states and 10687 transitions. Word has length 72 [2022-04-06 19:07:35,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:07:35,519 INFO L478 AbstractCegarLoop]: Abstraction has 7168 states and 10687 transitions. [2022-04-06 19:07:35,519 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 14 states have internal predecessors, (54), 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) [2022-04-06 19:07:35,519 INFO L276 IsEmpty]: Start isEmpty. Operand 7168 states and 10687 transitions. [2022-04-06 19:07:35,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-06 19:07:35,520 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:07:35,520 INFO L499 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:07:35,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-04-06 19:07:35,735 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-04-06 19:07:35,735 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:07:35,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:07:35,736 INFO L85 PathProgramCache]: Analyzing trace with hash 725663356, now seen corresponding path program 15 times [2022-04-06 19:07:35,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:07:35,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2132820211] [2022-04-06 19:07:35,737 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:07:35,737 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-04-06 19:07:35,737 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:07:35,737 INFO L85 PathProgramCache]: Analyzing trace with hash 725663356, now seen corresponding path program 16 times [2022-04-06 19:07:35,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:07:35,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446454257] [2022-04-06 19:07:35,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:07:35,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:07:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:35,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:07:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:36,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:07:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:36,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-06 19:07:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:37,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:07:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:37,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:07:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:37,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-06 19:07:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:37,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-06 19:07:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:37,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:07:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:07:37,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:07:37,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446454257] [2022-04-06 19:07:37,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446454257] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:07:37,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801782169] [2022-04-06 19:07:37,315 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 19:07:37,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:07:37,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:07:37,319 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 19:07:37,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-06 19:07:38,899 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 19:07:38,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:07:38,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 27 conjunts are in the unsatisfiable core [2022-04-06 19:07:38,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:07:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:07:39,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 19:07:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:07:41,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801782169] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 19:07:41,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 19:07:41,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15, 15] total 48 [2022-04-06 19:07:41,036 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:07:41,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2132820211] [2022-04-06 19:07:41,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2132820211] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:07:41,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:07:41,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-06 19:07:41,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161482294] [2022-04-06 19:07:41,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:07:41,037 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-06 19:07:41,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:07:41,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-06 19:07:41,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=1819, Unknown=0, NotChecked=0, Total=2256 [2022-04-06 19:07:41,038 INFO L87 Difference]: Start difference. First operand 7168 states and 10687 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 15 states have internal predecessors, (55), 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) [2022-04-06 19:07:58,990 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 [] [2022-04-06 19:08:06,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:08:06,498 INFO L93 Difference]: Finished difference Result 15148 states and 23160 transitions. [2022-04-06 19:08:06,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-04-06 19:08:06,499 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 15 states have internal predecessors, (55), 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 73 [2022-04-06 19:08:06,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:08:06,525 INFO L225 Difference]: With dead ends: 15148 [2022-04-06 19:08:06,525 INFO L226 Difference]: Without dead ends: 7960 [2022-04-06 19:08:06,548 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=816, Invalid=3740, Unknown=0, NotChecked=0, Total=4556 [2022-04-06 19:08:06,548 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 2376 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 9663 mSolverCounterSat, 1049 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2406 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 10713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1049 IncrementalHoareTripleChecker+Valid, 9663 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2022-04-06 19:08:06,548 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2406 Valid, 3095 Invalid, 10713 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1049 Valid, 9663 Invalid, 1 Unknown, 0 Unchecked, 20.5s Time] [2022-04-06 19:08:06,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7960 states. [2022-04-06 19:08:08,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7960 to 7189. [2022-04-06 19:08:08,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7189 states, 5785 states have (on average 1.4319792566983578) internal successors, (8284), 5935 states have internal predecessors, (8284), 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) [2022-04-06 19:08:08,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7189 states to 7189 states and 10708 transitions. [2022-04-06 19:08:08,277 INFO L78 Accepts]: Start accepts. Automaton has 7189 states and 10708 transitions. Word has length 73 [2022-04-06 19:08:08,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:08:08,277 INFO L478 AbstractCegarLoop]: Abstraction has 7189 states and 10708 transitions. [2022-04-06 19:08:08,278 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 15 states have internal predecessors, (55), 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) [2022-04-06 19:08:08,278 INFO L276 IsEmpty]: Start isEmpty. Operand 7189 states and 10708 transitions. [2022-04-06 19:08:08,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-04-06 19:08:08,279 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:08:08,279 INFO L499 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:08:08,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-04-06 19:08:08,495 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-04-06 19:08:08,496 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:08:08,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:08:08,496 INFO L85 PathProgramCache]: Analyzing trace with hash -834405908, now seen corresponding path program 17 times [2022-04-06 19:08:08,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:08,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1161327203] [2022-04-06 19:08:08,497 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:08:08,497 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-04-06 19:08:08,497 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:08:08,497 INFO L85 PathProgramCache]: Analyzing trace with hash -834405908, now seen corresponding path program 18 times [2022-04-06 19:08:08,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:08:08,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340959678] [2022-04-06 19:08:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:08:08,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:08:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:08,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:08:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:08,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:08:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:09,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-06 19:08:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:09,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:08:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:09,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:10,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-06 19:08:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:10,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-06 19:08:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:10,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:10,166 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:08:10,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:08:10,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340959678] [2022-04-06 19:08:10,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340959678] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:08:10,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062898385] [2022-04-06 19:08:10,167 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 19:08:10,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:08:10,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:08:10,168 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 19:08:10,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process