./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/bin/uautomizer-AkOaLMaTGY --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 2754d1ad46049a17f9b43992f91364cab029d3fcf93c78791853a365602d9e1a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:28:51,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:28:51,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:28:51,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:28:51,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:28:51,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:28:51,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:28:51,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:28:51,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:28:51,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:28:51,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:28:51,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:28:51,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:28:51,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:28:51,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:28:51,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:28:51,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:28:51,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:28:51,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:28:51,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:28:51,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:28:51,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:28:51,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:28:51,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:28:51,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:28:51,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:28:51,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:28:51,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:28:51,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:28:51,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:28:51,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:28:51,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:28:51,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:28:51,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:28:51,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:28:51,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:28:51,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:28:51,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:28:51,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:28:51,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:28:51,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:28:51,861 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 08:28:51,891 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:28:51,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:28:51,892 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:28:51,892 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:28:51,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:28:51,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:28:51,894 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:28:51,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:28:51,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:28:51,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:28:51,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:28:51,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:28:51,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:28:51,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:28:51,902 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:28:51,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:28:51,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:28:51,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:28:51,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:28:51,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:28:51,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:28:51,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:28:51,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:28:51,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:28:51,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:28:51,905 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:28:51,906 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:28:51,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:28:51,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:28:51,908 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2754d1ad46049a17f9b43992f91364cab029d3fcf93c78791853a365602d9e1a [2021-11-07 08:28:52,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:28:52,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:28:52,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:28:52,349 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:28:52,352 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:28:52,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-07 08:28:52,439 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/bin/uautomizer-AkOaLMaTGY/data/a0a693436/9e11c87e878e441e9fcfd767184192c8/FLAGff8ddf3a0 [2021-11-07 08:28:53,550 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:28:53,551 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-07 08:28:53,630 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/bin/uautomizer-AkOaLMaTGY/data/a0a693436/9e11c87e878e441e9fcfd767184192c8/FLAGff8ddf3a0 [2021-11-07 08:28:53,813 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/bin/uautomizer-AkOaLMaTGY/data/a0a693436/9e11c87e878e441e9fcfd767184192c8 [2021-11-07 08:28:53,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:28:53,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:28:53,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:28:53,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:28:53,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:28:53,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:28:53" (1/1) ... [2021-11-07 08:28:53,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c04399f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:53, skipping insertion in model container [2021-11-07 08:28:53,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:28:53" (1/1) ... [2021-11-07 08:28:53,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:28:53,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:28:57,626 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347312,347325] [2021-11-07 08:28:57,629 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347481,347494] [2021-11-07 08:28:57,630 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347648,347661] [2021-11-07 08:28:57,630 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347816,347829] [2021-11-07 08:28:57,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:28:57,689 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:28:58,202 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347312,347325] [2021-11-07 08:28:58,203 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347481,347494] [2021-11-07 08:28:58,204 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347648,347661] [2021-11-07 08:28:58,204 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347816,347829] [2021-11-07 08:28:58,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:28:58,494 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:28:58,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:58 WrapperNode [2021-11-07 08:28:58,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:28:58,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:28:58,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:28:58,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:28:58,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:58" (1/1) ... [2021-11-07 08:28:58,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:58" (1/1) ... [2021-11-07 08:29:11,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:29:11,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:29:11,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:29:11,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:29:11,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:58" (1/1) ... [2021-11-07 08:29:11,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:58" (1/1) ... [2021-11-07 08:29:11,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:58" (1/1) ... [2021-11-07 08:29:11,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:58" (1/1) ... [2021-11-07 08:29:14,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:58" (1/1) ... [2021-11-07 08:29:15,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:58" (1/1) ... [2021-11-07 08:29:15,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:58" (1/1) ... [2021-11-07 08:29:15,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:29:15,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:29:15,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:29:15,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:29:15,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:58" (1/1) ... [2021-11-07 08:29:15,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:29:15,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:29:15,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:29:15,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5200afff-268f-4758-991d-57495739f4eb/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:29:15,971 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-07 08:29:15,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:29:15,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 08:29:15,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 08:29:15,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:29:15,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:29:15,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:29:15,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:29:15,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:29:15,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 08:29:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 08:29:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:29:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:29:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 08:29:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:29:15,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:30:18,950 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 08:30:18,950 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 08:30:18,951 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 08:30:18,951 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 08:30:18,957 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 08:30:18,959 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 08:30:19,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:30:19,097 INFO L299 CfgBuilder]: Removed 36462 assume(true) statements. [2021-11-07 08:30:19,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:30:19 BoogieIcfgContainer [2021-11-07 08:30:19,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:30:19,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:30:19,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:30:19,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:30:19,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:28:53" (1/3) ... [2021-11-07 08:30:19,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee7b574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:30:19, skipping insertion in model container [2021-11-07 08:30:19,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:28:58" (2/3) ... [2021-11-07 08:30:19,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee7b574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:30:19, skipping insertion in model container [2021-11-07 08:30:19,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:30:19" (3/3) ... [2021-11-07 08:30:19,130 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-07 08:30:19,137 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:30:19,137 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 78 error locations. [2021-11-07 08:30:19,299 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:30:19,306 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 08:30:19,306 INFO L340 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2021-11-07 08:30:19,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 23551 states, 23473 states have (on average 1.2085374685809227) internal successors, (28368), 23550 states have internal predecessors, (28368), 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 08:30:19,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 08:30:19,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:30:19,713 INFO L513 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] [2021-11-07 08:30:19,715 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-07 08:30:19,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:19,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1204676413, now seen corresponding path program 1 times [2021-11-07 08:30:19,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:19,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693084099] [2021-11-07 08:30:19,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:19,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:20,625 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 08:30:20,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:30:20,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693084099] [2021-11-07 08:30:20,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693084099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:30:20,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:30:20,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:30:20,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701111113] [2021-11-07 08:30:20,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:30:20,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:30:20,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:30:20,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:30:20,732 INFO L87 Difference]: Start difference. First operand has 23551 states, 23473 states have (on average 1.2085374685809227) internal successors, (28368), 23550 states have internal predecessors, (28368), 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 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 08:30:25,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:30:25,198 INFO L93 Difference]: Finished difference Result 50670 states and 61209 transitions. [2021-11-07 08:30:25,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:30:25,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2021-11-07 08:30:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:30:25,416 INFO L225 Difference]: With dead ends: 50670 [2021-11-07 08:30:25,416 INFO L226 Difference]: Without dead ends: 26908 [2021-11-07 08:30:25,484 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:30:25,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26908 states. [2021-11-07 08:30:26,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26908 to 26254. [2021-11-07 08:30:26,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26254 states, 26176 states have (on average 1.2003361858190709) internal successors, (31420), 26253 states have internal predecessors, (31420), 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 08:30:26,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26254 states to 26254 states and 31420 transitions. [2021-11-07 08:30:26,957 INFO L78 Accepts]: Start accepts. Automaton has 26254 states and 31420 transitions. Word has length 41 [2021-11-07 08:30:26,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:30:26,958 INFO L470 AbstractCegarLoop]: Abstraction has 26254 states and 31420 transitions. [2021-11-07 08:30:26,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 08:30:26,959 INFO L276 IsEmpty]: Start isEmpty. Operand 26254 states and 31420 transitions. [2021-11-07 08:30:26,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 08:30:26,968 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:30:26,968 INFO L513 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] [2021-11-07 08:30:26,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:30:26,970 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-07 08:30:26,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:26,974 INFO L85 PathProgramCache]: Analyzing trace with hash -201446684, now seen corresponding path program 1 times [2021-11-07 08:30:26,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:26,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657919410] [2021-11-07 08:30:26,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:26,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:27,308 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 08:30:27,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:30:27,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657919410] [2021-11-07 08:30:27,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657919410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:30:27,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:30:27,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:30:27,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827072721] [2021-11-07 08:30:27,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:30:27,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:30:27,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:30:27,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:30:27,315 INFO L87 Difference]: Start difference. First operand 26254 states and 31420 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 08:30:32,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:30:32,166 INFO L93 Difference]: Finished difference Result 78372 states and 93847 transitions. [2021-11-07 08:30:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:30:32,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-11-07 08:30:32,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:30:32,431 INFO L225 Difference]: With dead ends: 78372 [2021-11-07 08:30:32,432 INFO L226 Difference]: Without dead ends: 52186 [2021-11-07 08:30:32,527 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:30:32,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52186 states. [2021-11-07 08:30:34,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52186 to 52108. [2021-11-07 08:30:34,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52108 states, 52030 states have (on average 1.200269075533346) internal successors, (62450), 52107 states have internal predecessors, (62450), 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 08:30:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52108 states to 52108 states and 62450 transitions. [2021-11-07 08:30:34,960 INFO L78 Accepts]: Start accepts. Automaton has 52108 states and 62450 transitions. Word has length 43 [2021-11-07 08:30:34,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:30:34,961 INFO L470 AbstractCegarLoop]: Abstraction has 52108 states and 62450 transitions. [2021-11-07 08:30:34,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 08:30:34,963 INFO L276 IsEmpty]: Start isEmpty. Operand 52108 states and 62450 transitions. [2021-11-07 08:30:34,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 08:30:34,968 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:30:34,969 INFO L513 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] [2021-11-07 08:30:34,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:30:34,978 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-07 08:30:34,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:34,979 INFO L85 PathProgramCache]: Analyzing trace with hash 933455554, now seen corresponding path program 1 times [2021-11-07 08:30:34,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:34,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444653407] [2021-11-07 08:30:34,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:34,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:35,273 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 08:30:35,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:30:35,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444653407] [2021-11-07 08:30:35,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444653407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:30:35,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:30:35,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:30:35,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571225434] [2021-11-07 08:30:35,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:30:35,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:30:35,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:30:35,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:30:35,278 INFO L87 Difference]: Start difference. First operand 52108 states and 62450 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 08:30:40,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:30:40,513 INFO L93 Difference]: Finished difference Result 149636 states and 179286 transitions. [2021-11-07 08:30:40,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:30:40,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-11-07 08:30:40,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:30:40,843 INFO L225 Difference]: With dead ends: 149636 [2021-11-07 08:30:40,843 INFO L226 Difference]: Without dead ends: 97596 [2021-11-07 08:30:40,963 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:30:41,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97596 states. [2021-11-07 08:30:44,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97596 to 97256. [2021-11-07 08:30:44,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97256 states, 97178 states have (on average 1.1998394698388524) internal successors, (116598), 97255 states have internal predecessors, (116598), 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 08:30:44,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97256 states to 97256 states and 116598 transitions. [2021-11-07 08:30:44,854 INFO L78 Accepts]: Start accepts. Automaton has 97256 states and 116598 transitions. Word has length 43 [2021-11-07 08:30:44,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:30:44,855 INFO L470 AbstractCegarLoop]: Abstraction has 97256 states and 116598 transitions. [2021-11-07 08:30:44,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 08:30:44,856 INFO L276 IsEmpty]: Start isEmpty. Operand 97256 states and 116598 transitions. [2021-11-07 08:30:44,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 08:30:44,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:30:44,858 INFO L513 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] [2021-11-07 08:30:44,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:30:44,858 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-07 08:30:44,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:44,860 INFO L85 PathProgramCache]: Analyzing trace with hash -838052200, now seen corresponding path program 1 times [2021-11-07 08:30:44,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:44,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63419178] [2021-11-07 08:30:44,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:44,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:45,169 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 08:30:45,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:30:45,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63419178] [2021-11-07 08:30:45,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63419178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:30:45,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:30:45,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:30:45,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47321092] [2021-11-07 08:30:45,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:30:45,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:30:45,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:30:45,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:30:45,181 INFO L87 Difference]: Start difference. First operand 97256 states and 116598 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 08:30:53,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:30:53,061 INFO L93 Difference]: Finished difference Result 273694 states and 328183 transitions. [2021-11-07 08:30:53,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:30:53,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2021-11-07 08:30:53,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:30:53,637 INFO L225 Difference]: With dead ends: 273694 [2021-11-07 08:30:53,637 INFO L226 Difference]: Without dead ends: 176506 [2021-11-07 08:30:54,179 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:30:54,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176506 states. [2021-11-07 08:31:00,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176506 to 175398. [2021-11-07 08:31:01,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175398 states, 175320 states have (on average 1.199783253479352) internal successors, (210346), 175397 states have internal predecessors, (210346), 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 08:31:01,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175398 states to 175398 states and 210346 transitions. [2021-11-07 08:31:01,626 INFO L78 Accepts]: Start accepts. Automaton has 175398 states and 210346 transitions. Word has length 44 [2021-11-07 08:31:01,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:31:01,628 INFO L470 AbstractCegarLoop]: Abstraction has 175398 states and 210346 transitions. [2021-11-07 08:31:01,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 08:31:01,628 INFO L276 IsEmpty]: Start isEmpty. Operand 175398 states and 210346 transitions. [2021-11-07 08:31:01,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 08:31:01,630 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:31:01,631 INFO L513 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] [2021-11-07 08:31:01,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:31:01,631 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-07 08:31:01,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:01,632 INFO L85 PathProgramCache]: Analyzing trace with hash -286827323, now seen corresponding path program 1 times [2021-11-07 08:31:01,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:01,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640553550] [2021-11-07 08:31:01,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:01,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:01,890 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 08:31:01,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:01,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640553550] [2021-11-07 08:31:01,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640553550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:01,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:01,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:31:01,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249729865] [2021-11-07 08:31:01,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:31:01,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:01,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:31:01,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:31:01,894 INFO L87 Difference]: Start difference. First operand 175398 states and 210346 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 08:31:09,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:09,777 INFO L93 Difference]: Finished difference Result 302269 states and 362520 transitions. [2021-11-07 08:31:09,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:31:09,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-11-07 08:31:09,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:31:10,209 INFO L225 Difference]: With dead ends: 302269 [2021-11-07 08:31:10,210 INFO L226 Difference]: Without dead ends: 126939 [2021-11-07 08:31:10,468 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:31:10,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126939 states.