./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6081258d9228cc20a54c5db1ec40347e5dbacbb2bb40755a07881673d13b875b --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 19:16:06,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 19:16:06,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 19:16:06,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 19:16:06,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 19:16:06,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 19:16:06,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 19:16:06,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 19:16:06,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 19:16:06,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 19:16:06,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 19:16:06,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 19:16:06,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 19:16:06,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 19:16:06,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 19:16:06,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 19:16:06,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 19:16:06,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 19:16:06,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 19:16:06,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 19:16:06,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 19:16:06,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 19:16:06,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 19:16:06,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 19:16:06,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 19:16:06,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 19:16:06,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 19:16:06,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 19:16:06,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 19:16:06,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 19:16:06,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 19:16:06,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 19:16:06,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 19:16:06,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 19:16:06,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 19:16:06,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 19:16:06,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 19:16:06,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 19:16:06,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 19:16:06,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 19:16:06,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 19:16:06,763 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 19:16:06,794 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 19:16:06,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 19:16:06,795 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 19:16:06,795 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 19:16:06,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 19:16:06,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 19:16:06,796 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 19:16:06,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 19:16:06,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 19:16:06,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 19:16:06,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 19:16:06,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 19:16:06,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 19:16:06,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 19:16:06,808 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 19:16:06,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 19:16:06,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 19:16:06,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 19:16:06,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 19:16:06,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:16:06,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 19:16:06,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 19:16:06,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 19:16:06,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 19:16:06,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 19:16:06,810 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 19:16:06,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 19:16:06,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 19:16:06,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 19:16:06,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6081258d9228cc20a54c5db1ec40347e5dbacbb2bb40755a07881673d13b875b [2021-11-07 19:16:07,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 19:16:07,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 19:16:07,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 19:16:07,027 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 19:16:07,027 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 19:16:07,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-07 19:16:07,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d296982/9237505e8f314757ac027d031538cd08/FLAG312f6c929 [2021-11-07 19:16:07,725 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 19:16:07,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-07 19:16:07,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d296982/9237505e8f314757ac027d031538cd08/FLAG312f6c929 [2021-11-07 19:16:07,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d296982/9237505e8f314757ac027d031538cd08 [2021-11-07 19:16:07,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 19:16:07,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 19:16:07,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 19:16:07,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 19:16:07,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 19:16:07,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:16:07" (1/1) ... [2021-11-07 19:16:07,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@353528db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:07, skipping insertion in model container [2021-11-07 19:16:07,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:16:07" (1/1) ... [2021-11-07 19:16:07,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 19:16:07,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 19:16:09,878 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386207,386220] [2021-11-07 19:16:09,881 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386376,386389] [2021-11-07 19:16:09,881 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386543,386556] [2021-11-07 19:16:09,885 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386711,386724] [2021-11-07 19:16:09,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:16:09,956 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 19:16:10,255 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386207,386220] [2021-11-07 19:16:10,256 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386376,386389] [2021-11-07 19:16:10,256 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386543,386556] [2021-11-07 19:16:10,257 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386711,386724] [2021-11-07 19:16:10,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:16:10,402 INFO L208 MainTranslator]: Completed translation [2021-11-07 19:16:10,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:10 WrapperNode [2021-11-07 19:16:10,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 19:16:10,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 19:16:10,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 19:16:10,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 19:16:10,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:10" (1/1) ... [2021-11-07 19:16:10,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:10" (1/1) ... [2021-11-07 19:16:12,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 19:16:12,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 19:16:12,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 19:16:12,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 19:16:12,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:10" (1/1) ... [2021-11-07 19:16:12,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:10" (1/1) ... [2021-11-07 19:16:12,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:10" (1/1) ... [2021-11-07 19:16:12,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:10" (1/1) ... [2021-11-07 19:16:13,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:10" (1/1) ... [2021-11-07 19:16:13,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:10" (1/1) ... [2021-11-07 19:16:13,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:10" (1/1) ... [2021-11-07 19:16:14,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 19:16:14,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 19:16:14,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 19:16:14,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 19:16:14,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:10" (1/1) ... [2021-11-07 19:16:14,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:16:14,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 19:16:14,455 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) [2021-11-07 19:16:14,462 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 [2021-11-07 19:16:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-07 19:16:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 19:16:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 19:16:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 19:16:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 19:16:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 19:16:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 19:16:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 19:16:14,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 19:16:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 19:16:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 19:16:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 19:16:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 19:16:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 19:16:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 19:16:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 19:16:34,482 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 19:16:34,482 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 19:16:34,483 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 19:16:34,483 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 19:16:34,486 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 19:16:34,487 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 19:16:34,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 19:16:34,526 INFO L299 CfgBuilder]: Removed 20076 assume(true) statements. [2021-11-07 19:16:34,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:16:34 BoogieIcfgContainer [2021-11-07 19:16:34,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 19:16:34,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 19:16:34,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 19:16:34,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 19:16:34,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:16:07" (1/3) ... [2021-11-07 19:16:34,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1cde7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:16:34, skipping insertion in model container [2021-11-07 19:16:34,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:10" (2/3) ... [2021-11-07 19:16:34,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1cde7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:16:34, skipping insertion in model container [2021-11-07 19:16:34,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:16:34" (3/3) ... [2021-11-07 19:16:34,541 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-07 19:16:34,544 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 19:16:34,544 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 98 error locations. [2021-11-07 19:16:34,609 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 19:16:34,613 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 19:16:34,613 INFO L340 AbstractCegarLoop]: Starting to check reachability of 98 error locations. [2021-11-07 19:16:34,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 13942 states, 13844 states have (on average 1.2050707887893672) internal successors, (16683), 13941 states have internal predecessors, (16683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:16:34,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 19:16:34,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:16:34,762 INFO L514 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] [2021-11-07 19:16:34,762 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-07 19:16:34,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:16:34,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1902186889, now seen corresponding path program 1 times [2021-11-07 19:16:34,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:16:34,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454256069] [2021-11-07 19:16:34,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:16:34,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:16:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:16:35,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:16:35,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:16:35,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454256069] [2021-11-07 19:16:35,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454256069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:16:35,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:16:35,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:16:35,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542336172] [2021-11-07 19:16:35,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:16:35,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:16:35,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:16:35,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:16:35,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:16:35,349 INFO L87 Difference]: Start difference. First operand has 13942 states, 13844 states have (on average 1.2050707887893672) internal successors, (16683), 13941 states have internal predecessors, (16683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:16:37,405 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:16:38,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:16:38,093 INFO L93 Difference]: Finished difference Result 41308 states and 49389 transitions. [2021-11-07 19:16:38,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:16:38,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 19:16:38,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:16:38,200 INFO L225 Difference]: With dead ends: 41308 [2021-11-07 19:16:38,200 INFO L226 Difference]: Without dead ends: 27122 [2021-11-07 19:16:38,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.61ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:16:38,236 INFO L933 BasicCegarLoop]: 16542 mSDtfsCounter, 16148 mSDsluCounter, 16495 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2073.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16148 SdHoareTripleChecker+Valid, 33037 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.08ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2167.78ms IncrementalHoareTripleChecker+Time [2021-11-07 19:16:38,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16148 Valid, 33037 Invalid, 34 Unknown, 0 Unchecked, 58.08ms Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2167.78ms Time] [2021-11-07 19:16:38,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27122 states. [2021-11-07 19:16:38,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27122 to 26998. [2021-11-07 19:16:38,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26998 states, 26900 states have (on average 1.1825650557620817) internal successors, (31811), 26997 states have internal predecessors, (31811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:16:39,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26998 states to 26998 states and 31811 transitions. [2021-11-07 19:16:39,062 INFO L78 Accepts]: Start accepts. Automaton has 26998 states and 31811 transitions. Word has length 63 [2021-11-07 19:16:39,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:16:39,064 INFO L470 AbstractCegarLoop]: Abstraction has 26998 states and 31811 transitions. [2021-11-07 19:16:39,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:16:39,066 INFO L276 IsEmpty]: Start isEmpty. Operand 26998 states and 31811 transitions. [2021-11-07 19:16:39,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 19:16:39,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:16:39,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:16:39,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 19:16:39,071 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-07 19:16:39,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:16:39,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1989378126, now seen corresponding path program 1 times [2021-11-07 19:16:39,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:16:39,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422364336] [2021-11-07 19:16:39,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:16:39,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:16:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:16:39,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:16:39,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:16:39,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422364336] [2021-11-07 19:16:39,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422364336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:16:39,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:16:39,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:16:39,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186677240] [2021-11-07 19:16:39,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:16:39,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:16:39,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:16:39,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:16:39,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:16:39,239 INFO L87 Difference]: Start difference. First operand 26998 states and 31811 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:16:41,269 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:16:42,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:16:42,151 INFO L93 Difference]: Finished difference Result 52117 states and 61443 transitions. [2021-11-07 19:16:42,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:16:42,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 19:16:42,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:16:42,212 INFO L225 Difference]: With dead ends: 52117 [2021-11-07 19:16:42,213 INFO L226 Difference]: Without dead ends: 25243 [2021-11-07 19:16:42,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:16:42,253 INFO L933 BasicCegarLoop]: 16084 mSDtfsCounter, 6967 mSDsluCounter, 15950 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2110.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6967 SdHoareTripleChecker+Valid, 32034 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.54ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2226.17ms IncrementalHoareTripleChecker+Time [2021-11-07 19:16:42,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6967 Valid, 32034 Invalid, 100 Unknown, 0 Unchecked, 30.54ms Time], IncrementalHoareTripleChecker [21 Valid, 78 Invalid, 1 Unknown, 0 Unchecked, 2226.17ms Time] [2021-11-07 19:16:42,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25243 states. [2021-11-07 19:16:42,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25243 to 25113. [2021-11-07 19:16:42,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25113 states, 25015 states have (on average 1.1849690185888466) internal successors, (29642), 25112 states have internal predecessors, (29642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:16:42,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25113 states to 25113 states and 29642 transitions. [2021-11-07 19:16:42,873 INFO L78 Accepts]: Start accepts. Automaton has 25113 states and 29642 transitions. Word has length 67 [2021-11-07 19:16:42,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:16:42,874 INFO L470 AbstractCegarLoop]: Abstraction has 25113 states and 29642 transitions. [2021-11-07 19:16:42,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:16:42,875 INFO L276 IsEmpty]: Start isEmpty. Operand 25113 states and 29642 transitions. [2021-11-07 19:16:42,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 19:16:42,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:16:42,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:16:42,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 19:16:42,876 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-07 19:16:42,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:16:42,877 INFO L85 PathProgramCache]: Analyzing trace with hash 485039376, now seen corresponding path program 1 times [2021-11-07 19:16:42,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:16:42,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050416529] [2021-11-07 19:16:42,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:16:42,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:16:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:16:43,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:16:43,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:16:43,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050416529] [2021-11-07 19:16:43,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050416529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:16:43,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:16:43,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:16:43,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758930714] [2021-11-07 19:16:43,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:16:43,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:16:43,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:16:43,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:16:43,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:16:43,036 INFO L87 Difference]: Start difference. First operand 25113 states and 29642 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:16:45,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:16:45,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:16:45,941 INFO L93 Difference]: Finished difference Result 57561 states and 67886 transitions. [2021-11-07 19:16:45,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:16:45,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 19:16:45,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:16:46,016 INFO L225 Difference]: With dead ends: 57561 [2021-11-07 19:16:46,016 INFO L226 Difference]: Without dead ends: 32572 [2021-11-07 19:16:46,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:16:46,067 INFO L933 BasicCegarLoop]: 16095 mSDtfsCounter, 11265 mSDsluCounter, 16009 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2118.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11265 SdHoareTripleChecker+Valid, 32104 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.61ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2254.12ms IncrementalHoareTripleChecker+Time [2021-11-07 19:16:46,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11265 Valid, 32104 Invalid, 105 Unknown, 0 Unchecked, 25.61ms Time], IncrementalHoareTripleChecker [11 Valid, 93 Invalid, 1 Unknown, 0 Unchecked, 2254.12ms Time] [2021-11-07 19:16:46,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32572 states. [2021-11-07 19:16:46,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32572 to 31755. [2021-11-07 19:16:46,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31755 states, 31657 states have (on average 1.1840035379221026) internal successors, (37482), 31754 states have internal predecessors, (37482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:16:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31755 states to 31755 states and 37482 transitions. [2021-11-07 19:16:46,839 INFO L78 Accepts]: Start accepts. Automaton has 31755 states and 37482 transitions. Word has length 69 [2021-11-07 19:16:46,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:16:46,840 INFO L470 AbstractCegarLoop]: Abstraction has 31755 states and 37482 transitions. [2021-11-07 19:16:46,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:16:46,840 INFO L276 IsEmpty]: Start isEmpty. Operand 31755 states and 37482 transitions. [2021-11-07 19:16:46,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 19:16:46,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:16:46,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:16:46,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 19:16:46,843 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr90ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-07 19:16:46,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:16:46,843 INFO L85 PathProgramCache]: Analyzing trace with hash -860041770, now seen corresponding path program 1 times [2021-11-07 19:16:46,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:16:46,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098512709] [2021-11-07 19:16:46,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:16:46,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:16:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:16:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:16:47,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:16:47,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098512709] [2021-11-07 19:16:47,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098512709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:16:47,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:16:47,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:16:47,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181819254] [2021-11-07 19:16:47,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:16:47,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:16:47,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:16:47,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:16:47,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:16:47,006 INFO L87 Difference]: Start difference. First operand 31755 states and 37482 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:16:49,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:16:49,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:16:49,927 INFO L93 Difference]: Finished difference Result 84150 states and 99311 transitions. [2021-11-07 19:16:49,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:16:49,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 19:16:49,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:16:50,057 INFO L225 Difference]: With dead ends: 84150 [2021-11-07 19:16:50,057 INFO L226 Difference]: Without dead ends: 52519 [2021-11-07 19:16:50,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:16:50,110 INFO L933 BasicCegarLoop]: 16092 mSDtfsCounter, 14045 mSDsluCounter, 15119 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2085.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14045 SdHoareTripleChecker+Valid, 31211 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.20ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2204.12ms IncrementalHoareTripleChecker+Time [2021-11-07 19:16:50,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14045 Valid, 31211 Invalid, 49 Unknown, 0 Unchecked, 21.20ms Time], IncrementalHoareTripleChecker [13 Valid, 35 Invalid, 1 Unknown, 0 Unchecked, 2204.12ms Time] [2021-11-07 19:16:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52519 states. [2021-11-07 19:16:51,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52519 to 52153. [2021-11-07 19:16:51,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52153 states, 52055 states have (on average 1.1835942752857556) internal successors, (61612), 52152 states have internal predecessors, (61612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:16:51,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52153 states to 52153 states and 61612 transitions. [2021-11-07 19:16:51,165 INFO L78 Accepts]: Start accepts. Automaton has 52153 states and 61612 transitions. Word has length 69 [2021-11-07 19:16:51,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:16:51,165 INFO L470 AbstractCegarLoop]: Abstraction has 52153 states and 61612 transitions. [2021-11-07 19:16:51,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:16:51,166 INFO L276 IsEmpty]: Start isEmpty. Operand 52153 states and 61612 transitions. [2021-11-07 19:16:51,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 19:16:51,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:16:51,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:16:51,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 19:16:51,167 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr88ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-07 19:16:51,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:16:51,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1102072347, now seen corresponding path program 1 times [2021-11-07 19:16:51,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:16:51,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924220570] [2021-11-07 19:16:51,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:16:51,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:16:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:16:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:16:51,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:16:51,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924220570] [2021-11-07 19:16:51,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924220570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:16:51,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:16:51,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:16:51,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406104800] [2021-11-07 19:16:51,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:16:51,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:16:51,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:16:51,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:16:51,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:16:51,283 INFO L87 Difference]: Start difference. First operand 52153 states and 61612 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:16:53,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:16:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:16:54,869 INFO L93 Difference]: Finished difference Result 155565 states and 183769 transitions. [2021-11-07 19:16:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:16:54,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 19:16:54,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:16:55,302 INFO L225 Difference]: With dead ends: 155565 [2021-11-07 19:16:55,304 INFO L226 Difference]: Without dead ends: 103536 [2021-11-07 19:16:55,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:16:55,393 INFO L933 BasicCegarLoop]: 16099 mSDtfsCounter, 15880 mSDsluCounter, 16077 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2059.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15880 SdHoareTripleChecker+Valid, 32176 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.29ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2170.05ms IncrementalHoareTripleChecker+Time [2021-11-07 19:16:55,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15880 Valid, 32176 Invalid, 39 Unknown, 0 Unchecked, 23.29ms Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2170.05ms Time] [2021-11-07 19:16:55,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103536 states. [2021-11-07 19:16:57,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103536 to 103210. [2021-11-07 19:16:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103210 states, 103112 states have (on average 1.1830630770424393) internal successors, (121988), 103209 states have internal predecessors, (121988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:16:57,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103210 states to 103210 states and 121988 transitions. [2021-11-07 19:16:57,646 INFO L78 Accepts]: Start accepts. Automaton has 103210 states and 121988 transitions. Word has length 76 [2021-11-07 19:16:57,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:16:57,647 INFO L470 AbstractCegarLoop]: Abstraction has 103210 states and 121988 transitions. [2021-11-07 19:16:57,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:16:57,647 INFO L276 IsEmpty]: Start isEmpty. Operand 103210 states and 121988 transitions. [2021-11-07 19:16:57,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 19:16:57,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:16:57,648 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:16:57,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 19:16:57,649 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-07 19:16:57,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:16:57,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1795054265, now seen corresponding path program 1 times [2021-11-07 19:16:57,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:16:57,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619789547] [2021-11-07 19:16:57,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:16:57,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:16:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:16:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:16:57,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:16:57,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619789547] [2021-11-07 19:16:57,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619789547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:16:57,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:16:57,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:16:57,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184007049] [2021-11-07 19:16:57,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:16:57,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:16:57,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:16:57,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:16:57,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:16:57,784 INFO L87 Difference]: Start difference. First operand 103210 states and 121988 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:16:59,817 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:17:03,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:17:03,574 INFO L93 Difference]: Finished difference Result 308560 states and 364779 transitions. [2021-11-07 19:17:03,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:17:03,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-07 19:17:03,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:17:04,016 INFO L225 Difference]: With dead ends: 308560 [2021-11-07 19:17:04,016 INFO L226 Difference]: Without dead ends: 205570 [2021-11-07 19:17:04,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:17:04,425 INFO L933 BasicCegarLoop]: 16168 mSDtfsCounter, 15841 mSDsluCounter, 16008 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2051.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15841 SdHoareTripleChecker+Valid, 32176 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.68ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2189.30ms IncrementalHoareTripleChecker+Time [2021-11-07 19:17:04,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15841 Valid, 32176 Invalid, 34 Unknown, 0 Unchecked, 24.68ms Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2189.30ms Time] [2021-11-07 19:17:04,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205570 states. [2021-11-07 19:17:08,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205570 to 205446. [2021-11-07 19:17:08,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205446 states, 205348 states have (on average 1.1829674503769212) internal successors, (242920), 205445 states have internal predecessors, (242920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:17:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205446 states to 205446 states and 242920 transitions. [2021-11-07 19:17:09,391 INFO L78 Accepts]: Start accepts. Automaton has 205446 states and 242920 transitions. Word has length 92 [2021-11-07 19:17:09,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:17:09,391 INFO L470 AbstractCegarLoop]: Abstraction has 205446 states and 242920 transitions. [2021-11-07 19:17:09,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:17:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 205446 states and 242920 transitions. [2021-11-07 19:17:09,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 19:17:09,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:17:09,393 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:17:09,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 19:17:09,393 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-07 19:17:09,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:17:09,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1513883016, now seen corresponding path program 1 times [2021-11-07 19:17:09,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:17:09,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767560779] [2021-11-07 19:17:09,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:17:09,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:17:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:17:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:17:09,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:17:09,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767560779] [2021-11-07 19:17:09,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767560779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:17:09,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:17:09,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:17:09,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042464246] [2021-11-07 19:17:09,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:17:09,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:17:09,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:17:09,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:17:09,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:17:09,537 INFO L87 Difference]: Start difference. First operand 205446 states and 242920 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:17:11,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []