/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 16:15:04,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 16:15:04,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 16:15:04,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 16:15:04,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 16:15:04,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 16:15:04,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 16:15:04,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 16:15:04,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 16:15:04,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 16:15:04,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 16:15:04,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 16:15:04,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 16:15:04,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 16:15:04,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 16:15:04,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 16:15:04,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 16:15:04,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 16:15:04,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 16:15:04,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 16:15:04,548 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 16:15:04,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 16:15:04,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 16:15:04,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 16:15:04,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 16:15:04,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 16:15:04,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 16:15:04,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 16:15:04,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 16:15:04,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 16:15:04,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-18 16:15:04,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 16:15:04,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 16:15:04,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 16:15:04,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 16:15:04,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 16:15:04,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 16:15:04,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 16:15:04,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 16:15:04,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 16:15:04,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 16:15:04,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 16:15:04,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-18 16:15:04,586 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 16:15:04,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 16:15:04,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-18 16:15:04,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-18 16:15:04,588 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 16:15:04,589 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 16:15:04,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 16:15:04,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 16:15:04,591 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 16:15:04,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 16:15:04,592 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 16:15:04,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 16:15:04,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 16:15:04,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 16:15:04,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 16:15:04,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 16:15:04,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 16:15:04,592 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 16:15:04,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 16:15:04,593 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 16:15:04,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 16:15:04,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 16:15:04,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 16:15:04,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 16:15:04,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 16:15:04,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 16:15:04,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 16:15:04,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 16:15:04,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 16:15:04,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 16:15:04,595 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-18 16:15:04,596 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-18 16:15:04,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 16:15:04,596 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 16:15:04,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 16:15:04,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 16:15:04,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 16:15:04,876 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 16:15:04,877 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 16:15:04,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-03-18 16:15:04,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71da3e157/7a5d0f1adffe45f793f2248c8809611b/FLAGbaac0eb72 [2022-03-18 16:15:05,617 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 16:15:05,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-03-18 16:15:05,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71da3e157/7a5d0f1adffe45f793f2248c8809611b/FLAGbaac0eb72 [2022-03-18 16:15:05,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71da3e157/7a5d0f1adffe45f793f2248c8809611b [2022-03-18 16:15:05,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 16:15:05,822 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 16:15:05,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 16:15:05,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 16:15:05,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 16:15:05,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 04:15:05" (1/1) ... [2022-03-18 16:15:05,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d8e3e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:15:05, skipping insertion in model container [2022-03-18 16:15:05,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 04:15:05" (1/1) ... [2022-03-18 16:15:05,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 16:15:05,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 16:15:06,541 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c[76734,76747] [2022-03-18 16:15:06,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 16:15:07,030 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 16:15:07,106 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c[76734,76747] [2022-03-18 16:15:07,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 16:15:07,448 INFO L208 MainTranslator]: Completed translation [2022-03-18 16:15:07,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:15:07 WrapperNode [2022-03-18 16:15:07,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 16:15:07,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 16:15:07,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 16:15:07,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 16:15:07,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:15:07" (1/1) ... [2022-03-18 16:15:07,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:15:07" (1/1) ... [2022-03-18 16:15:07,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:15:07" (1/1) ... [2022-03-18 16:15:07,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:15:07" (1/1) ... [2022-03-18 16:15:07,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:15:07" (1/1) ... [2022-03-18 16:15:07,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:15:07" (1/1) ... [2022-03-18 16:15:07,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:15:07" (1/1) ... [2022-03-18 16:15:07,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 16:15:07,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 16:15:07,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 16:15:07,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 16:15:07,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:15:07" (1/1) ... [2022-03-18 16:15:07,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 16:15:07,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:15:07,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 16:15:07,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 16:15:07,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 16:15:07,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 16:15:07,964 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 16:15:07,965 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-03-18 16:15:07,966 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-18 16:15:07,966 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-18 16:15:07,966 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-03-18 16:15:07,966 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyUnload [2022-03-18 16:15:07,966 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyAddDevice [2022-03-18 16:15:07,966 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConfigCallBack [2022-03-18 16:15:07,966 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-03-18 16:15:07,966 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-03-18 16:15:07,967 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-03-18 16:15:07,967 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-03-18 16:15:07,967 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-03-18 16:15:07,967 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-03-18 16:15:07,967 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-03-18 16:15:07,967 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPower [2022-03-18 16:15:07,967 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyReadWrite [2022-03-18 16:15:07,967 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInterpretError [2022-03-18 16:15:07,967 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFinishOperation [2022-03-18 16:15:07,967 INFO L138 BoogieDeclarations]: Found implementation of procedure FlStartDrive [2022-03-18 16:15:07,967 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDatarateSpecifyConfigure [2022-03-18 16:15:07,967 INFO L138 BoogieDeclarations]: Found implementation of procedure FlRecalibrateDrive [2022-03-18 16:15:07,967 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDetermineMediaType [2022-03-18 16:15:07,968 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAllocateIoBuffer [2022-03-18 16:15:07,968 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFreeIoBuffer [2022-03-18 16:15:07,968 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyThread [2022-03-18 16:15:07,968 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConsolidateMediaTypeWithBootSector [2022-03-18 16:15:07,968 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckBootSector [2022-03-18 16:15:07,968 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWriteTrack [2022-03-18 16:15:07,968 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWrite [2022-03-18 16:15:07,968 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFormat [2022-03-18 16:15:07,968 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-03-18 16:15:07,968 INFO L138 BoogieDeclarations]: Found implementation of procedure FlIssueCommand [2022-03-18 16:15:07,968 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInitializeControllerHardware [2022-03-18 16:15:07,968 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-03-18 16:15:07,968 INFO L138 BoogieDeclarations]: Found implementation of procedure FlHdbit [2022-03-18 16:15:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-03-18 16:15:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCancelQueuedRequest [2022-03-18 16:15:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-03-18 16:15:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-18 16:15:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 16:15:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-03-18 16:15:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-03-18 16:15:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-03-18 16:15:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-03-18 16:15:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-03-18 16:15:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-03-18 16:15:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-03-18 16:15:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-03-18 16:15:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-03-18 16:15:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-03-18 16:15:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-18 16:15:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-03-18 16:15:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-03-18 16:15:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-03-18 16:15:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-18 16:15:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-03-18 16:15:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-03-18 16:15:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-03-18 16:15:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-03-18 16:15:07,972 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-18 16:15:07,972 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-18 16:15:07,972 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-03-18 16:15:07,972 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-18 16:15:07,972 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-03-18 16:15:07,972 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-18 16:15:07,972 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-18 16:15:07,972 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-18 16:15:07,973 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-03-18 16:15:07,973 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-03-18 16:15:07,973 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-03-18 16:15:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-03-18 16:15:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-03-18 16:15:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-03-18 16:15:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-18 16:15:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-18 16:15:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-03-18 16:15:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-03-18 16:15:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-03-18 16:15:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-03-18 16:15:07,975 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-03-18 16:15:07,975 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-03-18 16:15:07,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-18 16:15:07,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-03-18 16:15:07,975 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-18 16:15:07,975 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-03-18 16:15:07,975 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-18 16:15:07,975 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-03-18 16:15:07,975 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-03-18 16:15:07,975 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-03-18 16:15:07,975 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-03-18 16:15:07,976 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-03-18 16:15:07,976 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-03-18 16:15:07,976 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-03-18 16:15:07,976 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-03-18 16:15:07,976 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-03-18 16:15:07,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-18 16:15:07,976 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-03-18 16:15:07,977 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-18 16:15:07,977 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-03-18 16:15:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 16:15:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 16:15:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 16:15:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 16:15:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-18 16:15:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 16:15:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-18 16:15:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2022-03-18 16:15:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-03-18 16:15:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-18 16:15:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-03-18 16:15:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-03-18 16:15:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-03-18 16:15:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-03-18 16:15:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-03-18 16:15:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-03-18 16:15:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-03-18 16:15:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-03-18 16:15:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-03-18 16:15:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-03-18 16:15:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-03-18 16:15:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 16:15:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 16:15:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-03-18 16:15:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-18 16:15:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-03-18 16:15:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-03-18 16:15:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-03-18 16:15:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-18 16:15:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-03-18 16:15:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-03-18 16:15:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-03-18 16:15:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-03-18 16:15:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-03-18 16:15:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-03-18 16:15:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-03-18 16:15:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-03-18 16:15:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-03-18 16:15:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-03-18 16:15:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-03-18 16:15:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-03-18 16:15:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-03-18 16:15:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-03-18 16:15:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-18 16:15:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-03-18 16:15:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-03-18 16:15:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-03-18 16:15:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-03-18 16:15:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-18 16:15:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-18 16:15:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-18 16:15:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-03-18 16:15:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-03-18 16:15:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-03-18 16:15:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-18 16:15:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-03-18 16:15:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-03-18 16:15:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-03-18 16:15:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-03-18 16:15:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-18 16:15:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-03-18 16:15:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-03-18 16:15:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-18 16:15:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-18 16:15:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-18 16:15:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-03-18 16:15:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-18 16:15:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-03-18 16:15:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-18 16:15:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-03-18 16:15:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyUnload [2022-03-18 16:15:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure FlConfigCallBack [2022-03-18 16:15:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure FlInitializeControllerHardware [2022-03-18 16:15:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-03-18 16:15:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-03-18 16:15:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyReadWrite [2022-03-18 16:15:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure FlRecalibrateDrive [2022-03-18 16:15:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure FlDatarateSpecifyConfigure [2022-03-18 16:15:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure FlStartDrive [2022-03-18 16:15:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure FlFinishOperation [2022-03-18 16:15:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure FlDetermineMediaType [2022-03-18 16:15:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyThread [2022-03-18 16:15:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWrite [2022-03-18 16:15:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure FlFormat [2022-03-18 16:15:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure FlIssueCommand [2022-03-18 16:15:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-03-18 16:15:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-03-18 16:15:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure FlInterpretError [2022-03-18 16:15:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure FlAllocateIoBuffer [2022-03-18 16:15:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure FlFreeIoBuffer [2022-03-18 16:15:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure FlConsolidateMediaTypeWithBootSector [2022-03-18 16:15:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckBootSector [2022-03-18 16:15:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWriteTrack [2022-03-18 16:15:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-03-18 16:15:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyAddDevice [2022-03-18 16:15:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-03-18 16:15:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPower [2022-03-18 16:15:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-03-18 16:15:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-03-18 16:15:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-03-18 16:15:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-03-18 16:15:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCancelQueuedRequest [2022-03-18 16:15:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-03-18 16:15:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure FlHdbit [2022-03-18 16:15:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-18 16:15:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-18 16:15:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-18 16:15:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-18 16:15:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-18 16:15:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-18 16:15:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-18 16:15:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 16:15:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-18 16:15:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-03-18 16:15:07,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-03-18 16:15:07,996 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-18 16:15:07,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 16:15:07,996 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-18 16:15:07,996 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-03-18 16:15:07,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 16:15:07,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 16:15:07,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 16:15:07,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-18 16:15:07,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-18 16:15:07,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-18 16:15:07,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-18 16:15:08,670 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 16:15:08,675 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 16:15:08,709 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:08,782 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:15:08,782 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:15:08,782 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:08,789 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:15:08,789 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:15:10,858 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:10,864 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:15:10,865 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:15:10,865 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:10,875 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:15:10,875 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:15:10,880 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:10,888 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:15:10,888 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:15:10,936 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:10,947 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:15:10,947 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:15:10,948 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:10,959 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:15:10,959 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:15:10,959 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:10,973 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:15:10,973 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:15:11,045 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:11,117 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-03-18 16:15:11,117 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-03-18 16:15:11,192 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:11,198 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:15:11,200 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:15:11,200 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:11,207 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:15:11,207 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:15:11,207 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:11,217 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:15:11,217 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:15:11,232 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:11,241 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:15:11,242 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:15:11,243 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:11,250 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:15:11,250 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:15:18,339 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:18,355 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-18 16:15:18,356 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-18 16:15:18,417 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:21,275 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-03-18 16:15:21,276 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-03-18 16:15:21,697 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:21,702 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:15:21,702 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:15:21,786 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:21,821 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-03-18 16:15:21,821 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-03-18 16:15:21,824 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:21,993 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-18 16:15:21,993 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-18 16:15:21,994 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:22,054 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-03-18 16:15:22,054 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-03-18 16:15:33,215 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:33,220 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:15:33,220 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:15:33,341 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:33,346 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:15:33,346 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:15:33,367 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:35,724 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-03-18 16:15:35,724 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-03-18 16:15:35,772 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:36,031 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-03-18 16:15:36,031 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-03-18 16:15:36,033 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:36,049 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-18 16:15:36,049 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-18 16:15:36,049 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:36,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-18 16:15:36,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-18 16:15:36,093 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:36,101 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-18 16:15:36,101 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-18 16:15:36,149 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:36,154 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:15:36,154 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:15:36,167 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:36,173 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:15:36,173 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:15:36,174 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:36,260 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2022-03-18 16:15:36,261 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2022-03-18 16:15:36,311 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:15:38,710 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-03-18 16:15:38,710 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-03-18 16:15:38,745 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 16:15:38,781 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 16:15:38,781 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-03-18 16:15:38,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 04:15:38 BoogieIcfgContainer [2022-03-18 16:15:38,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 16:15:38,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 16:15:38,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 16:15:38,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 16:15:38,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 04:15:05" (1/3) ... [2022-03-18 16:15:38,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4951fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 04:15:38, skipping insertion in model container [2022-03-18 16:15:38,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:15:07" (2/3) ... [2022-03-18 16:15:38,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4951fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 04:15:38, skipping insertion in model container [2022-03-18 16:15:38,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 04:15:38" (3/3) ... [2022-03-18 16:15:38,802 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2022-03-18 16:15:38,807 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 16:15:38,807 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 16:15:38,866 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 16:15:38,877 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 16:15:38,877 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 16:15:38,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 1449 states, 1151 states have (on average 1.523023457862728) internal successors, (1753), 1192 states have internal predecessors, (1753), 221 states have call successors, (221), 72 states have call predecessors, (221), 72 states have return successors, (221), 215 states have call predecessors, (221), 221 states have call successors, (221) [2022-03-18 16:15:38,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-18 16:15:38,932 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:15:38,933 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:15:38,934 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:15:38,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:15:38,942 INFO L85 PathProgramCache]: Analyzing trace with hash 760330439, now seen corresponding path program 1 times [2022-03-18 16:15:38,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:15:38,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612821373] [2022-03-18 16:15:38,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:15:38,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:15:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:15:39,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:15:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:15:39,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:15:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:15:39,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:15:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:15:39,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:15:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:15:40,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:15:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:15:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:15:40,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:15:40,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612821373] [2022-03-18 16:15:40,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612821373] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:15:40,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:15:40,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 16:15:40,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503631126] [2022-03-18 16:15:40,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:15:40,045 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 16:15:40,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:15:40,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 16:15:40,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-18 16:15:40,075 INFO L87 Difference]: Start difference. First operand has 1449 states, 1151 states have (on average 1.523023457862728) internal successors, (1753), 1192 states have internal predecessors, (1753), 221 states have call successors, (221), 72 states have call predecessors, (221), 72 states have return successors, (221), 215 states have call predecessors, (221), 221 states have call successors, (221) Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 16:15:48,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:15:50,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:15:50,195 INFO L93 Difference]: Finished difference Result 1399 states and 2144 transitions. [2022-03-18 16:15:50,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 16:15:50,201 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-03-18 16:15:50,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:15:50,231 INFO L225 Difference]: With dead ends: 1399 [2022-03-18 16:15:50,231 INFO L226 Difference]: Without dead ends: 833 [2022-03-18 16:15:50,240 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-03-18 16:15:50,244 INFO L912 BasicCegarLoop]: 728 mSDtfsCounter, 1822 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 917 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 3355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-03-18 16:15:50,246 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1850 Valid, 1207 Invalid, 3355 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [917 Valid, 2437 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-03-18 16:15:50,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-03-18 16:15:50,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 651. [2022-03-18 16:15:50,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 491 states have (on average 1.4256619144602851) internal successors, (700), 523 states have internal predecessors, (700), 115 states have call successors, (115), 46 states have call predecessors, (115), 44 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-03-18 16:15:50,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 906 transitions. [2022-03-18 16:15:50,405 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 906 transitions. Word has length 37 [2022-03-18 16:15:50,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:15:50,406 INFO L478 AbstractCegarLoop]: Abstraction has 651 states and 906 transitions. [2022-03-18 16:15:50,410 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 16:15:50,410 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 906 transitions. [2022-03-18 16:15:50,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-18 16:15:50,412 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:15:50,412 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:15:50,413 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 16:15:50,413 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:15:50,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:15:50,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2031942295, now seen corresponding path program 1 times [2022-03-18 16:15:50,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:15:50,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043166738] [2022-03-18 16:15:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:15:50,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:15:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:15:50,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:15:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:15:50,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:15:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:15:50,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:15:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:15:51,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:15:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:15:51,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:15:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:15:51,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 16:15:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:15:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:15:51,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:15:51,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043166738] [2022-03-18 16:15:51,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043166738] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:15:51,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:15:51,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 16:15:51,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626300096] [2022-03-18 16:15:51,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:15:51,123 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 16:15:51,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:15:51,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 16:15:51,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-18 16:15:51,124 INFO L87 Difference]: Start difference. First operand 651 states and 906 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 16:15:56,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:16:01,124 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:16:07,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:16:07,195 INFO L93 Difference]: Finished difference Result 1886 states and 2773 transitions. [2022-03-18 16:16:07,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 16:16:07,199 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2022-03-18 16:16:07,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:16:07,209 INFO L225 Difference]: With dead ends: 1886 [2022-03-18 16:16:07,209 INFO L226 Difference]: Without dead ends: 1423 [2022-03-18 16:16:07,211 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-18 16:16:07,212 INFO L912 BasicCegarLoop]: 924 mSDtfsCounter, 2605 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 4187 mSolverCounterSat, 915 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2643 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 5104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 4187 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-03-18 16:16:07,213 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2643 Valid, 1695 Invalid, 5104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [915 Valid, 4187 Invalid, 2 Unknown, 0 Unchecked, 14.8s Time] [2022-03-18 16:16:07,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-03-18 16:16:07,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1195. [2022-03-18 16:16:07,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 925 states have (on average 1.4086486486486487) internal successors, (1303), 956 states have internal predecessors, (1303), 177 states have call successors, (177), 79 states have call predecessors, (177), 92 states have return successors, (237), 169 states have call predecessors, (237), 161 states have call successors, (237) [2022-03-18 16:16:07,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1717 transitions. [2022-03-18 16:16:07,326 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1717 transitions. Word has length 42 [2022-03-18 16:16:07,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:16:07,327 INFO L478 AbstractCegarLoop]: Abstraction has 1195 states and 1717 transitions. [2022-03-18 16:16:07,327 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 16:16:07,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1717 transitions. [2022-03-18 16:16:07,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-18 16:16:07,338 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:16:07,338 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:16:07,338 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 16:16:07,338 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:16:07,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:16:07,339 INFO L85 PathProgramCache]: Analyzing trace with hash 2071284277, now seen corresponding path program 1 times [2022-03-18 16:16:07,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:16:07,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314967845] [2022-03-18 16:16:07,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:16:07,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:16:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:07,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:16:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:07,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:16:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:07,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:16:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:07,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:16:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:08,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:16:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:08,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 16:16:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:08,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 16:16:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:08,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:16:08,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:16:08,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314967845] [2022-03-18 16:16:08,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314967845] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:16:08,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:16:08,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 16:16:08,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836338390] [2022-03-18 16:16:08,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:16:08,095 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 16:16:08,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:16:08,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 16:16:08,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-18 16:16:08,096 INFO L87 Difference]: Start difference. First operand 1195 states and 1717 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:16:14,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:16:18,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:16:20,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:16:20,585 INFO L93 Difference]: Finished difference Result 2186 states and 3260 transitions. [2022-03-18 16:16:20,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 16:16:20,586 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2022-03-18 16:16:20,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:16:20,601 INFO L225 Difference]: With dead ends: 2186 [2022-03-18 16:16:20,601 INFO L226 Difference]: Without dead ends: 2168 [2022-03-18 16:16:20,603 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-18 16:16:20,604 INFO L912 BasicCegarLoop]: 720 mSDtfsCounter, 3327 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 1187 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3383 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 4108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1187 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-03-18 16:16:20,604 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3383 Valid, 1333 Invalid, 4108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1187 Valid, 2919 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2022-03-18 16:16:20,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2022-03-18 16:16:20,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 1838. [2022-03-18 16:16:20,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1435 states have (on average 1.427177700348432) internal successors, (2048), 1486 states have internal predecessors, (2048), 261 states have call successors, (261), 121 states have call predecessors, (261), 141 states have return successors, (375), 244 states have call predecessors, (375), 245 states have call successors, (375) [2022-03-18 16:16:20,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2684 transitions. [2022-03-18 16:16:20,746 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2684 transitions. Word has length 54 [2022-03-18 16:16:20,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:16:20,747 INFO L478 AbstractCegarLoop]: Abstraction has 1838 states and 2684 transitions. [2022-03-18 16:16:20,747 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:16:20,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2684 transitions. [2022-03-18 16:16:20,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 16:16:20,749 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:16:20,749 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:16:20,749 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 16:16:20,749 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:16:20,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:16:20,750 INFO L85 PathProgramCache]: Analyzing trace with hash 546834136, now seen corresponding path program 1 times [2022-03-18 16:16:20,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:16:20,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891499389] [2022-03-18 16:16:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:16:20,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:16:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:21,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:16:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:21,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:16:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:21,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:16:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:21,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:16:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:21,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:16:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:21,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 16:16:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:16:21,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:16:21,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891499389] [2022-03-18 16:16:21,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891499389] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:16:21,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:16:21,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 16:16:21,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530948427] [2022-03-18 16:16:21,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:16:21,365 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 16:16:21,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:16:21,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 16:16:21,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-18 16:16:21,366 INFO L87 Difference]: Start difference. First operand 1838 states and 2684 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 16:16:29,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:16:35,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:16:35,522 INFO L93 Difference]: Finished difference Result 3657 states and 5559 transitions. [2022-03-18 16:16:35,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 16:16:35,523 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-03-18 16:16:35,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:16:35,543 INFO L225 Difference]: With dead ends: 3657 [2022-03-18 16:16:35,543 INFO L226 Difference]: Without dead ends: 3654 [2022-03-18 16:16:35,546 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-18 16:16:35,547 INFO L912 BasicCegarLoop]: 1116 mSDtfsCounter, 1772 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 4813 mSolverCounterSat, 700 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 5514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 4813 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-03-18 16:16:35,548 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1812 Valid, 1846 Invalid, 5514 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [700 Valid, 4813 Invalid, 1 Unknown, 0 Unchecked, 12.7s Time] [2022-03-18 16:16:35,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-03-18 16:16:35,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 2949. [2022-03-18 16:16:35,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2337 states have (on average 1.4394522892597348) internal successors, (3364), 2396 states have internal predecessors, (3364), 382 states have call successors, (382), 202 states have call predecessors, (382), 229 states have return successors, (577), 364 states have call predecessors, (577), 366 states have call successors, (577) [2022-03-18 16:16:35,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4323 transitions. [2022-03-18 16:16:35,803 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4323 transitions. Word has length 55 [2022-03-18 16:16:35,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:16:35,804 INFO L478 AbstractCegarLoop]: Abstraction has 2949 states and 4323 transitions. [2022-03-18 16:16:35,804 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 16:16:35,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4323 transitions. [2022-03-18 16:16:35,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 16:16:35,805 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:16:35,806 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:16:35,806 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-18 16:16:35,806 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:16:35,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:16:35,806 INFO L85 PathProgramCache]: Analyzing trace with hash -893598350, now seen corresponding path program 1 times [2022-03-18 16:16:35,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:16:35,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886152902] [2022-03-18 16:16:35,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:16:35,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:16:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:36,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:16:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:36,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:16:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:36,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:16:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:36,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:16:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:36,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:16:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:36,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 16:16:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:36,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:16:36,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:16:36,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886152902] [2022-03-18 16:16:36,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886152902] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:16:36,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:16:36,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 16:16:36,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880992791] [2022-03-18 16:16:36,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:16:36,414 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 16:16:36,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:16:36,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 16:16:36,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-18 16:16:36,415 INFO L87 Difference]: Start difference. First operand 2949 states and 4323 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 16:16:44,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:16:46,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:16:46,171 INFO L93 Difference]: Finished difference Result 3468 states and 5241 transitions. [2022-03-18 16:16:46,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 16:16:46,172 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-03-18 16:16:46,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:16:46,194 INFO L225 Difference]: With dead ends: 3468 [2022-03-18 16:16:46,194 INFO L226 Difference]: Without dead ends: 3464 [2022-03-18 16:16:46,198 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-03-18 16:16:46,201 INFO L912 BasicCegarLoop]: 708 mSDtfsCounter, 1702 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 2791 mSolverCounterSat, 707 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 3499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2791 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-03-18 16:16:46,201 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1730 Valid, 1255 Invalid, 3499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2791 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-03-18 16:16:46,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-03-18 16:16:46,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 2974. [2022-03-18 16:16:46,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2363 states have (on average 1.4401184934405418) internal successors, (3403), 2418 states have internal predecessors, (3403), 381 states have call successors, (381), 202 states have call predecessors, (381), 229 states have return successors, (575), 365 states have call predecessors, (575), 365 states have call successors, (575) [2022-03-18 16:16:46,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4359 transitions. [2022-03-18 16:16:46,562 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4359 transitions. Word has length 55 [2022-03-18 16:16:46,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:16:46,564 INFO L478 AbstractCegarLoop]: Abstraction has 2974 states and 4359 transitions. [2022-03-18 16:16:46,564 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 16:16:46,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4359 transitions. [2022-03-18 16:16:46,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-18 16:16:46,567 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:16:46,567 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:16:46,567 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-18 16:16:46,567 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:16:46,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:16:46,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1696705075, now seen corresponding path program 1 times [2022-03-18 16:16:46,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:16:46,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701799075] [2022-03-18 16:16:46,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:16:46,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:16:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:46,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:16:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:46,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:16:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:47,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:16:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:47,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:16:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:47,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:16:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:47,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 16:16:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:47,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:16:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:47,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:16:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:16:47,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:16:47,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:16:47,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701799075] [2022-03-18 16:16:47,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701799075] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:16:47,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:16:47,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 16:16:47,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477692572] [2022-03-18 16:16:47,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:16:47,307 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 16:16:47,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:16:47,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 16:16:47,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-18 16:16:47,308 INFO L87 Difference]: Start difference. First operand 2974 states and 4359 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 16:16:56,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:17:01,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:17:04,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:17:04,544 INFO L93 Difference]: Finished difference Result 4254 states and 6463 transitions. [2022-03-18 16:17:04,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-18 16:17:04,544 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2022-03-18 16:17:04,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:17:04,564 INFO L225 Difference]: With dead ends: 4254 [2022-03-18 16:17:04,564 INFO L226 Difference]: Without dead ends: 4246 [2022-03-18 16:17:04,568 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-03-18 16:17:04,568 INFO L912 BasicCegarLoop]: 1006 mSDtfsCounter, 3777 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 4819 mSolverCounterSat, 1752 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3827 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 6573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1752 IncrementalHoareTripleChecker+Valid, 4819 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-03-18 16:17:04,569 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3827 Valid, 1804 Invalid, 6573 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1752 Valid, 4819 Invalid, 2 Unknown, 0 Unchecked, 14.5s Time] [2022-03-18 16:17:04,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2022-03-18 16:17:04,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 3598. [2022-03-18 16:17:04,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 2861 states have (on average 1.4435512058720728) internal successors, (4130), 2928 states have internal predecessors, (4130), 458 states have call successors, (458), 238 states have call predecessors, (458), 278 states have return successors, (709), 449 states have call predecessors, (709), 442 states have call successors, (709) [2022-03-18 16:17:04,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5297 transitions. [2022-03-18 16:17:04,877 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5297 transitions. Word has length 57 [2022-03-18 16:17:04,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:17:04,878 INFO L478 AbstractCegarLoop]: Abstraction has 3598 states and 5297 transitions. [2022-03-18 16:17:04,878 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 16:17:04,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5297 transitions. [2022-03-18 16:17:04,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-18 16:17:04,879 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:17:04,880 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:17:04,880 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-18 16:17:04,880 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:17:04,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:17:04,880 INFO L85 PathProgramCache]: Analyzing trace with hash -582745306, now seen corresponding path program 1 times [2022-03-18 16:17:04,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:17:04,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383498698] [2022-03-18 16:17:04,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:17:04,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:17:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:05,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:17:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:05,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:17:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:05,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:17:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:05,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:17:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:05,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:17:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:05,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 16:17:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:05,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 16:17:05,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:17:05,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:17:05,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383498698] [2022-03-18 16:17:05,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383498698] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:17:05,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:17:05,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 16:17:05,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382150780] [2022-03-18 16:17:05,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:17:05,506 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 16:17:05,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:17:05,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 16:17:05,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-18 16:17:05,507 INFO L87 Difference]: Start difference. First operand 3598 states and 5297 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:17:12,095 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:17:17,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:17:17,967 INFO L93 Difference]: Finished difference Result 11208 states and 17196 transitions. [2022-03-18 16:17:17,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 16:17:17,968 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2022-03-18 16:17:17,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:17:18,007 INFO L225 Difference]: With dead ends: 11208 [2022-03-18 16:17:18,007 INFO L226 Difference]: Without dead ends: 7864 [2022-03-18 16:17:18,025 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-18 16:17:18,025 INFO L912 BasicCegarLoop]: 893 mSDtfsCounter, 2613 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 4030 mSolverCounterSat, 899 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2686 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 4930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 899 IncrementalHoareTripleChecker+Valid, 4030 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-03-18 16:17:18,026 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2686 Valid, 1630 Invalid, 4930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [899 Valid, 4030 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2022-03-18 16:17:18,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7864 states. [2022-03-18 16:17:18,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7864 to 6946. [2022-03-18 16:17:18,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 5542 states have (on average 1.453446409238542) internal successors, (8055), 5692 states have internal predecessors, (8055), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 16:17:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 10479 transitions. [2022-03-18 16:17:18,723 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 10479 transitions. Word has length 57 [2022-03-18 16:17:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:17:18,723 INFO L478 AbstractCegarLoop]: Abstraction has 6946 states and 10479 transitions. [2022-03-18 16:17:18,723 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 16:17:18,724 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 10479 transitions. [2022-03-18 16:17:18,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-18 16:17:18,725 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:17:18,725 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:17:18,725 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-18 16:17:18,725 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:17:18,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:17:18,726 INFO L85 PathProgramCache]: Analyzing trace with hash -466129244, now seen corresponding path program 1 times [2022-03-18 16:17:18,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:17:18,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558915056] [2022-03-18 16:17:18,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:17:18,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:17:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:19,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:17:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:19,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:17:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:19,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:17:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:19,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:17:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:19,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:17:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:19,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 16:17:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:19,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:17:19,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:17:19,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558915056] [2022-03-18 16:17:19,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558915056] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:17:19,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:17:19,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 16:17:19,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993502260] [2022-03-18 16:17:19,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:17:19,405 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 16:17:19,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:17:19,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 16:17:19,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-18 16:17:19,406 INFO L87 Difference]: Start difference. First operand 6946 states and 10479 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 16:17:25,602 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:17:30,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:17:34,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:17:41,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:17:41,896 INFO L93 Difference]: Finished difference Result 14677 states and 22415 transitions. [2022-03-18 16:17:41,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-18 16:17:41,897 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-03-18 16:17:41,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:17:41,936 INFO L225 Difference]: With dead ends: 14677 [2022-03-18 16:17:41,936 INFO L226 Difference]: Without dead ends: 8095 [2022-03-18 16:17:41,962 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-03-18 16:17:41,962 INFO L912 BasicCegarLoop]: 899 mSDtfsCounter, 5146 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 5495 mSolverCounterSat, 2199 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5191 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 7697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2199 IncrementalHoareTripleChecker+Valid, 5495 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2022-03-18 16:17:41,963 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [5191 Valid, 1785 Invalid, 7697 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2199 Valid, 5495 Invalid, 3 Unknown, 0 Unchecked, 19.2s Time] [2022-03-18 16:17:41,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8095 states. [2022-03-18 16:17:42,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8095 to 6937. [2022-03-18 16:17:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.452015181637448) internal successors, (8034), 5683 states have internal predecessors, (8034), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 16:17:42,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10458 transitions. [2022-03-18 16:17:42,630 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10458 transitions. Word has length 56 [2022-03-18 16:17:42,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:17:42,630 INFO L478 AbstractCegarLoop]: Abstraction has 6937 states and 10458 transitions. [2022-03-18 16:17:42,631 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 16:17:42,631 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10458 transitions. [2022-03-18 16:17:42,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-18 16:17:42,632 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:17:42,632 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:17:42,632 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-18 16:17:42,632 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:17:42,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:17:42,632 INFO L85 PathProgramCache]: Analyzing trace with hash 613167468, now seen corresponding path program 1 times [2022-03-18 16:17:42,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:17:42,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235164102] [2022-03-18 16:17:42,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:17:42,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:17:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:43,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:17:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:43,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:17:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:43,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:17:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:43,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:17:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:43,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:17:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:43,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 16:17:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:43,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:17:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:43,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:17:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:17:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:17:43,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:17:43,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235164102] [2022-03-18 16:17:43,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235164102] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:17:43,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:17:43,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 16:17:43,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701052144] [2022-03-18 16:17:43,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:17:43,362 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 16:17:43,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:17:43,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 16:17:43,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-18 16:17:43,363 INFO L87 Difference]: Start difference. First operand 6937 states and 10458 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 16:17:52,484 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:18:00,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:18:00,164 INFO L93 Difference]: Finished difference Result 7820 states and 12070 transitions. [2022-03-18 16:18:00,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-18 16:18:00,165 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-03-18 16:18:00,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:18:00,190 INFO L225 Difference]: With dead ends: 7820 [2022-03-18 16:18:00,190 INFO L226 Difference]: Without dead ends: 7815 [2022-03-18 16:18:00,193 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-03-18 16:18:00,193 INFO L912 BasicCegarLoop]: 987 mSDtfsCounter, 3896 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 5217 mSolverCounterSat, 1806 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3947 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 7024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1806 IncrementalHoareTripleChecker+Valid, 5217 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-03-18 16:18:00,194 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3947 Valid, 1888 Invalid, 7024 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1806 Valid, 5217 Invalid, 1 Unknown, 0 Unchecked, 13.6s Time] [2022-03-18 16:18:00,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7815 states. [2022-03-18 16:18:00,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7815 to 6937. [2022-03-18 16:18:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.4518344478583047) internal successors, (8033), 5683 states have internal predecessors, (8033), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 16:18:00,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10457 transitions. [2022-03-18 16:18:00,788 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10457 transitions. Word has length 58 [2022-03-18 16:18:00,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:18:00,788 INFO L478 AbstractCegarLoop]: Abstraction has 6937 states and 10457 transitions. [2022-03-18 16:18:00,789 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 16:18:00,789 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10457 transitions. [2022-03-18 16:18:00,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-18 16:18:00,790 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:18:00,790 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:18:00,790 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-18 16:18:00,791 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:18:00,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:18:00,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1552244362, now seen corresponding path program 1 times [2022-03-18 16:18:00,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:18:00,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935161505] [2022-03-18 16:18:00,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:18:00,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:18:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:01,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:18:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:01,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:18:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:01,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:18:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:01,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:18:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:01,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:18:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:01,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 16:18:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:01,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:18:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:01,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:18:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:18:01,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:18:01,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935161505] [2022-03-18 16:18:01,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935161505] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:18:01,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:18:01,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 16:18:01,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143528122] [2022-03-18 16:18:01,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:18:01,483 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 16:18:01,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:18:01,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 16:18:01,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-18 16:18:01,484 INFO L87 Difference]: Start difference. First operand 6937 states and 10457 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 16:18:07,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:18:10,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:18:12,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:18:14,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:18:19,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:18:23,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:18:23,246 INFO L93 Difference]: Finished difference Result 14740 states and 22518 transitions. [2022-03-18 16:18:23,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 16:18:23,248 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2022-03-18 16:18:23,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:18:23,278 INFO L225 Difference]: With dead ends: 14740 [2022-03-18 16:18:23,278 INFO L226 Difference]: Without dead ends: 7831 [2022-03-18 16:18:23,304 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-03-18 16:18:23,305 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 2018 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 4535 mSolverCounterSat, 895 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 5435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 895 IncrementalHoareTripleChecker+Valid, 4535 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-03-18 16:18:23,305 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2050 Valid, 1887 Invalid, 5435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [895 Valid, 4535 Invalid, 5 Unknown, 0 Unchecked, 20.3s Time] [2022-03-18 16:18:23,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7831 states. [2022-03-18 16:18:23,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7831 to 6937. [2022-03-18 16:18:23,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.4516537140791614) internal successors, (8032), 5683 states have internal predecessors, (8032), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 16:18:24,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10456 transitions. [2022-03-18 16:18:24,034 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10456 transitions. Word has length 59 [2022-03-18 16:18:24,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:18:24,034 INFO L478 AbstractCegarLoop]: Abstraction has 6937 states and 10456 transitions. [2022-03-18 16:18:24,034 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 16:18:24,034 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10456 transitions. [2022-03-18 16:18:24,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-18 16:18:24,036 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:18:24,036 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:18:24,036 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-18 16:18:24,036 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:18:24,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:18:24,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1006356351, now seen corresponding path program 1 times [2022-03-18 16:18:24,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:18:24,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550399506] [2022-03-18 16:18:24,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:18:24,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:18:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:24,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:18:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:24,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:18:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:24,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 16:18:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:24,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:18:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:24,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:18:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:24,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 16:18:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:24,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-18 16:18:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:24,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:18:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:18:24,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:18:24,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550399506] [2022-03-18 16:18:24,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550399506] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:18:24,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:18:24,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 16:18:24,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967423131] [2022-03-18 16:18:24,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:18:24,949 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 16:18:24,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:18:24,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 16:18:24,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-18 16:18:24,950 INFO L87 Difference]: Start difference. First operand 6937 states and 10456 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 16:18:33,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:18:36,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:18:36,887 INFO L93 Difference]: Finished difference Result 14697 states and 22709 transitions. [2022-03-18 16:18:36,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-18 16:18:36,887 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2022-03-18 16:18:36,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:18:36,918 INFO L225 Difference]: With dead ends: 14697 [2022-03-18 16:18:36,918 INFO L226 Difference]: Without dead ends: 7729 [2022-03-18 16:18:36,945 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-03-18 16:18:36,946 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 2336 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 3344 mSolverCounterSat, 1018 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2366 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 4363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1018 IncrementalHoareTripleChecker+Valid, 3344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-03-18 16:18:36,946 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2366 Valid, 1526 Invalid, 4363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1018 Valid, 3344 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-03-18 16:18:36,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7729 states. [2022-03-18 16:18:37,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7729 to 6958. [2022-03-18 16:18:37,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6958 states, 5554 states have (on average 1.4499459848757652) internal successors, (8053), 5704 states have internal predecessors, (8053), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 16:18:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6958 states to 6958 states and 10477 transitions. [2022-03-18 16:18:37,693 INFO L78 Accepts]: Start accepts. Automaton has 6958 states and 10477 transitions. Word has length 63 [2022-03-18 16:18:37,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:18:37,694 INFO L478 AbstractCegarLoop]: Abstraction has 6958 states and 10477 transitions. [2022-03-18 16:18:37,694 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 16:18:37,694 INFO L276 IsEmpty]: Start isEmpty. Operand 6958 states and 10477 transitions. [2022-03-18 16:18:37,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-18 16:18:37,696 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:18:37,696 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:18:37,696 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-18 16:18:37,696 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:18:37,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:18:37,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1497759729, now seen corresponding path program 1 times [2022-03-18 16:18:37,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:18:37,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452794809] [2022-03-18 16:18:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:18:37,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:18:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:38,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:18:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:38,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:18:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:38,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:18:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:38,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 16:18:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:38,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:18:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:38,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-18 16:18:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:38,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 16:18:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:38,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:18:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:38,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:18:38,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:18:38,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452794809] [2022-03-18 16:18:38,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452794809] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:18:38,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605261091] [2022-03-18 16:18:38,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:18:38,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:18:38,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:18:38,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 16:18:38,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 16:18:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:18:39,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 2817 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-18 16:18:39,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:18:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:18:40,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:18:40,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:18:40,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605261091] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 16:18:40,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 16:18:40,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 18 [2022-03-18 16:18:40,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450639054] [2022-03-18 16:18:40,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 16:18:40,543 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-18 16:18:40,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:18:40,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-18 16:18:40,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-03-18 16:18:40,544 INFO L87 Difference]: Start difference. First operand 6958 states and 10477 transitions. Second operand has 18 states, 18 states have (on average 4.5) internal successors, (81), 10 states have internal predecessors, (81), 2 states have call successors, (24), 10 states have call predecessors, (24), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-18 16:18:50,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:18:52,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:18:54,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:19:03,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:19:09,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:19:09,458 INFO L93 Difference]: Finished difference Result 14742 states and 22756 transitions. [2022-03-18 16:19:09,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-18 16:19:09,459 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 10 states have internal predecessors, (81), 2 states have call successors, (24), 10 states have call predecessors, (24), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 64 [2022-03-18 16:19:09,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:19:09,487 INFO L225 Difference]: With dead ends: 14742 [2022-03-18 16:19:09,488 INFO L226 Difference]: Without dead ends: 7752 [2022-03-18 16:19:09,507 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2022-03-18 16:19:09,508 INFO L912 BasicCegarLoop]: 701 mSDtfsCounter, 1532 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 7622 mSolverCounterSat, 671 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 2421 SdHoareTripleChecker+Invalid, 8297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 671 IncrementalHoareTripleChecker+Valid, 7622 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2022-03-18 16:19:09,508 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1562 Valid, 2421 Invalid, 8297 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [671 Valid, 7622 Invalid, 4 Unknown, 0 Unchecked, 26.1s Time] [2022-03-18 16:19:09,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7752 states. [2022-03-18 16:19:10,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7752 to 6981. [2022-03-18 16:19:10,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6981 states, 5577 states have (on average 1.4480903711672943) internal successors, (8076), 5727 states have internal predecessors, (8076), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 16:19:10,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6981 states to 6981 states and 10500 transitions. [2022-03-18 16:19:10,297 INFO L78 Accepts]: Start accepts. Automaton has 6981 states and 10500 transitions. Word has length 64 [2022-03-18 16:19:10,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:19:10,297 INFO L478 AbstractCegarLoop]: Abstraction has 6981 states and 10500 transitions. [2022-03-18 16:19:10,297 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 10 states have internal predecessors, (81), 2 states have call successors, (24), 10 states have call predecessors, (24), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-18 16:19:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 6981 states and 10500 transitions. [2022-03-18 16:19:10,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-18 16:19:10,299 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:19:10,299 INFO L500 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:19:10,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-18 16:19:10,515 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-18 16:19:10,516 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:19:10,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:19:10,516 INFO L85 PathProgramCache]: Analyzing trace with hash -626150932, now seen corresponding path program 1 times [2022-03-18 16:19:10,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:19:10,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335618017] [2022-03-18 16:19:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:19:10,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:19:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:10,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:19:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:11,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:19:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:11,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:19:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:11,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 16:19:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:11,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:11,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-18 16:19:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:11,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 16:19:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:11,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:11,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:19:11,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:19:11,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335618017] [2022-03-18 16:19:11,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335618017] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:19:11,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428600818] [2022-03-18 16:19:11,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:19:11,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:19:11,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:19:11,792 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 16:19:11,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 16:19:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:12,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 2861 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-18 16:19:12,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:19:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:19:13,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:19:14,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:19:14,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428600818] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 16:19:14,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 16:19:14,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8, 8] total 27 [2022-03-18 16:19:14,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154513217] [2022-03-18 16:19:14,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 16:19:14,123 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-18 16:19:14,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:19:14,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-18 16:19:14,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2022-03-18 16:19:14,124 INFO L87 Difference]: Start difference. First operand 6981 states and 10500 transitions. Second operand has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 19 states have internal predecessors, (89), 2 states have call successors, (24), 10 states have call predecessors, (24), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-18 16:19:25,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:19:33,436 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:19:39,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:19:39,415 INFO L93 Difference]: Finished difference Result 14908 states and 23005 transitions. [2022-03-18 16:19:39,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-18 16:19:39,419 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 19 states have internal predecessors, (89), 2 states have call successors, (24), 10 states have call predecessors, (24), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 66 [2022-03-18 16:19:39,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:19:39,445 INFO L225 Difference]: With dead ends: 14908 [2022-03-18 16:19:39,446 INFO L226 Difference]: Without dead ends: 7818 [2022-03-18 16:19:39,467 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=652, Invalid=2318, Unknown=0, NotChecked=0, Total=2970 [2022-03-18 16:19:39,468 INFO L912 BasicCegarLoop]: 703 mSDtfsCounter, 2106 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 6568 mSolverCounterSat, 927 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 7497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 6568 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2022-03-18 16:19:39,468 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2136 Valid, 2226 Invalid, 7497 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [927 Valid, 6568 Invalid, 2 Unknown, 0 Unchecked, 19.8s Time] [2022-03-18 16:19:39,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7818 states. [2022-03-18 16:19:40,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7818 to 7047. [2022-03-18 16:19:40,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7047 states, 5643 states have (on average 1.442849548112706) internal successors, (8142), 5793 states have internal predecessors, (8142), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 16:19:40,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7047 states to 7047 states and 10566 transitions. [2022-03-18 16:19:40,559 INFO L78 Accepts]: Start accepts. Automaton has 7047 states and 10566 transitions. Word has length 66 [2022-03-18 16:19:40,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:19:40,560 INFO L478 AbstractCegarLoop]: Abstraction has 7047 states and 10566 transitions. [2022-03-18 16:19:40,560 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 19 states have internal predecessors, (89), 2 states have call successors, (24), 10 states have call predecessors, (24), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-18 16:19:40,560 INFO L276 IsEmpty]: Start isEmpty. Operand 7047 states and 10566 transitions. [2022-03-18 16:19:40,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-18 16:19:40,561 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:19:40,562 INFO L500 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] [2022-03-18 16:19:40,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-18 16:19:40,775 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-18 16:19:40,776 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:19:40,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:19:40,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1884366828, now seen corresponding path program 2 times [2022-03-18 16:19:40,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:19:40,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847302573] [2022-03-18 16:19:40,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:19:40,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:19:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:41,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:19:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:41,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:19:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:42,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 16:19:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:42,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 16:19:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:42,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:42,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 16:19:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:42,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 16:19:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:42,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:42,397 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:19:42,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:19:42,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847302573] [2022-03-18 16:19:42,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847302573] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:19:42,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639987480] [2022-03-18 16:19:42,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 16:19:42,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:19:42,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:19:42,400 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 16:19:42,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 16:19:45,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 16:19:45,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 16:19:45,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-18 16:19:45,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:19:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:19:45,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:19:47,202 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:19:47,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639987480] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 16:19:47,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 16:19:47,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 14] total 45 [2022-03-18 16:19:47,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023772522] [2022-03-18 16:19:47,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 16:19:47,203 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-18 16:19:47,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:19:47,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-18 16:19:47,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1599, Unknown=0, NotChecked=0, Total=1980 [2022-03-18 16:19:47,204 INFO L87 Difference]: Start difference. First operand 7047 states and 10566 transitions. Second operand has 45 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 37 states have internal predecessors, (107), 2 states have call successors, (24), 10 states have call predecessors, (24), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-18 16:20:27,210 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:20:34,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:20:34,394 INFO L93 Difference]: Finished difference Result 15220 states and 23443 transitions. [2022-03-18 16:20:34,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-18 16:20:34,395 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 37 states have internal predecessors, (107), 2 states have call successors, (24), 10 states have call predecessors, (24), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 72 [2022-03-18 16:20:34,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:20:34,424 INFO L225 Difference]: With dead ends: 15220 [2022-03-18 16:20:34,425 INFO L226 Difference]: Without dead ends: 7950 [2022-03-18 16:20:34,497 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=1731, Invalid=6825, Unknown=0, NotChecked=0, Total=8556 [2022-03-18 16:20:34,497 INFO L912 BasicCegarLoop]: 706 mSDtfsCounter, 1980 mSDsluCounter, 2578 mSDsCounter, 0 mSdLazyCounter, 11289 mSolverCounterSat, 938 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 12228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 11289 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:20:34,498 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2010 Valid, 3284 Invalid, 12228 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [938 Valid, 11289 Invalid, 1 Unknown, 0 Unchecked, 23.0s Time] [2022-03-18 16:20:34,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7950 states. [2022-03-18 16:20:35,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7950 to 7179. [2022-03-18 16:20:35,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7179 states, 5775 states have (on average 1.4327272727272726) internal successors, (8274), 5925 states have internal predecessors, (8274), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-18 16:20:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7179 states to 7179 states and 10698 transitions. [2022-03-18 16:20:35,443 INFO L78 Accepts]: Start accepts. Automaton has 7179 states and 10698 transitions. Word has length 72 [2022-03-18 16:20:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:20:35,444 INFO L478 AbstractCegarLoop]: Abstraction has 7179 states and 10698 transitions. [2022-03-18 16:20:35,444 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 37 states have internal predecessors, (107), 2 states have call successors, (24), 10 states have call predecessors, (24), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-18 16:20:35,444 INFO L276 IsEmpty]: Start isEmpty. Operand 7179 states and 10698 transitions. [2022-03-18 16:20:35,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-18 16:20:35,445 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:20:35,445 INFO L500 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:20:35,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 16:20:35,671 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:20:35,672 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:20:35,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:20:35,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1121545236, now seen corresponding path program 3 times [2022-03-18 16:20:35,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:20:35,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966921038] [2022-03-18 16:20:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:20:35,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:20:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:36,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:20:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:36,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:20:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:38,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-18 16:20:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:38,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-18 16:20:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:38,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:38,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-18 16:20:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:38,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-18 16:20:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:38,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:20:38,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:20:38,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966921038] [2022-03-18 16:20:38,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966921038] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:20:38,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249546137] [2022-03-18 16:20:38,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 16:20:38,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:20:38,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:20:38,964 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 16:20:38,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process