./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-irda-via-ircc.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 67e7778ced54570c612880d3f2f5d48e6e2d3dc55afd632628e45d31cdc74c58 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:24:10,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:24:10,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:24:10,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:24:10,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:24:10,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:24:10,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:24:10,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:24:10,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:24:10,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:24:10,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:24:10,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:24:10,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:24:10,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:24:10,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:24:10,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:24:10,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:24:10,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:24:10,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:24:10,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:24:10,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:24:10,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:24:10,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:24:10,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:24:10,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:24:10,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:24:10,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:24:10,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:24:10,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:24:10,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:24:10,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:24:10,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:24:10,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:24:10,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:24:10,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:24:10,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:24:10,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:24:10,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:24:10,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:24:10,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:24:10,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:24:10,698 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:24:10,742 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:24:10,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:24:10,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:24:10,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:24:10,748 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:24:10,748 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:24:10,748 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:24:10,748 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:24:10,748 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:24:10,749 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:24:10,750 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:24:10,750 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:24:10,750 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:24:10,750 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:24:10,751 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:24:10,751 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:24:10,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:24:10,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:24:10,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:24:10,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:24:10,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:24:10,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:24:10,753 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:24:10,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:24:10,754 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:24:10,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:24:10,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:24:10,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:24:10,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:24:10,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:24:10,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:24:10,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:24:10,757 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:24:10,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:24:10,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:24:10,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:24:10,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:24:10,758 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67e7778ced54570c612880d3f2f5d48e6e2d3dc55afd632628e45d31cdc74c58 [2021-11-12 22:24:11,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:24:11,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:24:11,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:24:11,089 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:24:11,090 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:24:11,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-12 22:24:11,170 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/data/0ab1d6e26/e864ea485f5e438cba9370206a83c8ee/FLAG736781908 [2021-11-12 22:24:12,208 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:24:12,209 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-12 22:24:12,252 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/data/0ab1d6e26/e864ea485f5e438cba9370206a83c8ee/FLAG736781908 [2021-11-12 22:24:12,522 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/data/0ab1d6e26/e864ea485f5e438cba9370206a83c8ee [2021-11-12 22:24:12,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:24:12,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:24:12,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:24:12,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:24:12,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:24:12,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:24:12" (1/1) ... [2021-11-12 22:24:12,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3618da53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:12, skipping insertion in model container [2021-11-12 22:24:12,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:24:12" (1/1) ... [2021-11-12 22:24:12,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:24:12,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:24:15,800 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_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329615,329628] [2021-11-12 22:24:15,802 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_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329784,329797] [2021-11-12 22:24:15,803 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_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329951,329964] [2021-11-12 22:24:15,804 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_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[330119,330132] [2021-11-12 22:24:15,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:24:15,858 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:24:15,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@275806c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:15, skipping insertion in model container [2021-11-12 22:24:15,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:24:15,859 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:24:15,862 INFO L158 Benchmark]: Toolchain (without parser) took 3334.62ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 68.5MB in the beginning and 70.2MB in the end (delta: -1.7MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. [2021-11-12 22:24:15,863 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 79.7MB. Free memory was 57.0MB in the beginning and 57.0MB in the end (delta: 29.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:24:15,864 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3332.17ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 68.1MB in the beginning and 70.2MB in the end (delta: -2.1MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. [2021-11-12 22:24:15,866 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 79.7MB. Free memory was 57.0MB in the beginning and 57.0MB in the end (delta: 29.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3332.17ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 68.1MB in the beginning and 70.2MB in the end (delta: -2.1MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7589]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 67e7778ced54570c612880d3f2f5d48e6e2d3dc55afd632628e45d31cdc74c58 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:24:18,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:24:18,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:24:18,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:24:18,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:24:18,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:24:18,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:24:18,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:24:18,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:24:18,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:24:18,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:24:18,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:24:18,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:24:18,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:24:18,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:24:18,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:24:18,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:24:18,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:24:18,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:24:18,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:24:18,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:24:18,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:24:18,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:24:18,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:24:18,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:24:18,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:24:18,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:24:18,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:24:18,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:24:18,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:24:18,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:24:18,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:24:18,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:24:18,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:24:18,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:24:18,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:24:18,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:24:18,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:24:18,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:24:18,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:24:18,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:24:18,484 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:24:18,532 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:24:18,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:24:18,534 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:24:18,535 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:24:18,535 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:24:18,535 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:24:18,535 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:24:18,536 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:24:18,536 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:24:18,536 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:24:18,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:24:18,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:24:18,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:24:18,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:24:18,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:24:18,540 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:24:18,540 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:24:18,541 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:24:18,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:24:18,541 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:24:18,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:24:18,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:24:18,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:24:18,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:24:18,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:24:18,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:24:18,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:24:18,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:24:18,544 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:24:18,544 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:24:18,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:24:18,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:24:18,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:24:18,545 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67e7778ced54570c612880d3f2f5d48e6e2d3dc55afd632628e45d31cdc74c58 [2021-11-12 22:24:18,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:24:19,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:24:19,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:24:19,020 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:24:19,021 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:24:19,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-12 22:24:19,097 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/data/3bbbc19e4/1dc2aa3395d34c028a97318ad741c52c/FLAG96f74ee44 [2021-11-12 22:24:20,284 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:24:20,285 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-12 22:24:20,364 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/data/3bbbc19e4/1dc2aa3395d34c028a97318ad741c52c/FLAG96f74ee44 [2021-11-12 22:24:20,508 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/data/3bbbc19e4/1dc2aa3395d34c028a97318ad741c52c [2021-11-12 22:24:20,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:24:20,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:24:20,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:24:20,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:24:20,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:24:20,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:24:20" (1/1) ... [2021-11-12 22:24:20,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13652c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:20, skipping insertion in model container [2021-11-12 22:24:20,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:24:20" (1/1) ... [2021-11-12 22:24:20,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:24:20,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:24:23,865 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_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329615,329628] [2021-11-12 22:24:23,868 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_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329784,329797] [2021-11-12 22:24:23,869 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_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329951,329964] [2021-11-12 22:24:23,870 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_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[330119,330132] [2021-11-12 22:24:23,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:24:23,929 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:24:24,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:24:24,452 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_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329615,329628] [2021-11-12 22:24:24,452 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_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329784,329797] [2021-11-12 22:24:24,459 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_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329951,329964] [2021-11-12 22:24:24,460 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_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[330119,330132] [2021-11-12 22:24:24,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:24:24,512 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:24:25,257 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_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329615,329628] [2021-11-12 22:24:25,257 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_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329784,329797] [2021-11-12 22:24:25,258 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_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329951,329964] [2021-11-12 22:24:25,258 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_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[330119,330132] [2021-11-12 22:24:25,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:24:25,460 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:24:25,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:25 WrapperNode [2021-11-12 22:24:25,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:24:25,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:24:25,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:24:25,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:24:25,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:25" (1/1) ... [2021-11-12 22:24:25,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:25" (1/1) ... [2021-11-12 22:24:25,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:24:25,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:24:25,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:24:25,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:24:25,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:25" (1/1) ... [2021-11-12 22:24:25,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:25" (1/1) ... [2021-11-12 22:24:25,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:25" (1/1) ... [2021-11-12 22:24:25,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:25" (1/1) ... [2021-11-12 22:24:26,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:25" (1/1) ... [2021-11-12 22:24:26,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:25" (1/1) ... [2021-11-12 22:24:26,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:25" (1/1) ... [2021-11-12 22:24:26,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:24:26,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:24:26,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:24:26,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:24:26,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:25" (1/1) ... [2021-11-12 22:24:26,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:24:26,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:24:26,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:24:26,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:24:26,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 22:24:26,245 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 22:24:26,245 INFO L130 BoogieDeclarations]: Found specification of procedure RxCurCount [2021-11-12 22:24:26,245 INFO L138 BoogieDeclarations]: Found implementation of procedure RxCurCount [2021-11-12 22:24:26,245 INFO L130 BoogieDeclarations]: Found specification of procedure irda_setup_dma [2021-11-12 22:24:26,245 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_setup_dma [2021-11-12 22:24:26,246 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-12 22:24:26,246 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-12 22:24:26,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 22:24:26,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 22:24:26,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_73 [2021-11-12 22:24:26,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_73 [2021-11-12 22:24:26,247 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-12 22:24:26,247 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-12 22:24:26,247 INFO L130 BoogieDeclarations]: Found specification of procedure CheckRegBit [2021-11-12 22:24:26,247 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckRegBit [2021-11-12 22:24:26,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 22:24:26,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 22:24:26,248 INFO L130 BoogieDeclarations]: Found specification of procedure via_remove_one [2021-11-12 22:24:26,248 INFO L138 BoogieDeclarations]: Found implementation of procedure via_remove_one [2021-11-12 22:24:26,248 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_speed [2021-11-12 22:24:26,248 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_speed [2021-11-12 22:24:26,248 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-12 22:24:26,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-12 22:24:26,249 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-12 22:24:26,249 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-12 22:24:26,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 22:24:26,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 22:24:26,250 INFO L130 BoogieDeclarations]: Found specification of procedure SetPulseWidth [2021-11-12 22:24:26,250 INFO L138 BoogieDeclarations]: Found implementation of procedure SetPulseWidth [2021-11-12 22:24:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure Tdelay [2021-11-12 22:24:26,251 INFO L138 BoogieDeclarations]: Found implementation of procedure Tdelay [2021-11-12 22:24:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-12 22:24:26,251 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-12 22:24:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 22:24:26,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 22:24:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:24:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure ClkTx [2021-11-12 22:24:26,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ClkTx [2021-11-12 22:24:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure WriteLPCReg [2021-11-12 22:24:26,295 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteLPCReg [2021-11-12 22:24:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:24:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-12 22:24:26,295 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-12 22:24:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:24:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 22:24:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure CommonInit [2021-11-12 22:24:26,296 INFO L138 BoogieDeclarations]: Found implementation of procedure CommonInit [2021-11-12 22:24:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-12 22:24:26,296 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-12 22:24:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_dongle_speed [2021-11-12 22:24:26,296 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_dongle_speed [2021-11-12 22:24:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure ReadLPCReg [2021-11-12 22:24:26,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadLPCReg [2021-11-12 22:24:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma [2021-11-12 22:24:26,297 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma [2021-11-12 22:24:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_via_ircc_cb [2021-11-12 22:24:26,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_via_ircc_cb [2021-11-12 22:24:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_receive [2021-11-12 22:24:26,297 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_receive [2021-11-12 22:24:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-12 22:24:26,297 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-12 22:24:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 22:24:26,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 22:24:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_close [2021-11-12 22:24:26,298 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_close [2021-11-12 22:24:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 22:24:26,298 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 22:24:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure CkRxRecv [2021-11-12 22:24:26,298 INFO L138 BoogieDeclarations]: Found implementation of procedure CkRxRecv [2021-11-12 22:24:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-12 22:24:26,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-12 22:24:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-12 22:24:26,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-12 22:24:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure irda_get_next_speed [2021-11-12 22:24:26,300 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_get_next_speed [2021-11-12 22:24:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure ReadReg [2021-11-12 22:24:26,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadReg [2021-11-12 22:24:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_open [2021-11-12 22:24:26,311 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_open [2021-11-12 22:24:26,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 22:24:26,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 22:24:26,312 INFO L130 BoogieDeclarations]: Found specification of procedure WriteRegBit [2021-11-12 22:24:26,312 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteRegBit [2021-11-12 22:24:26,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:24:26,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-12 22:24:26,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-12 22:24:26,313 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Indx [2021-11-12 22:24:26,313 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Indx [2021-11-12 22:24:26,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 22:24:26,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 22:24:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-12 22:24:26,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-12 22:24:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:24:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 22:24:26,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 22:24:26,315 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 22:24:26,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 22:24:26,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 22:24:26,316 INFO L130 BoogieDeclarations]: Found specification of procedure WriteReg [2021-11-12 22:24:26,316 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteReg [2021-11-12 22:24:26,316 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-12 22:24:26,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-12 22:24:26,317 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 22:24:26,317 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 22:24:26,317 INFO L130 BoogieDeclarations]: Found specification of procedure SetBaudRate [2021-11-12 22:24:26,318 INFO L138 BoogieDeclarations]: Found implementation of procedure SetBaudRate [2021-11-12 22:24:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Byte [2021-11-12 22:24:26,318 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Byte [2021-11-12 22:24:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-12 22:24:26,318 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-12 22:24:26,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-12 22:24:26,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-12 22:24:26,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 22:24:26,322 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_open [2021-11-12 22:24:26,322 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_open [2021-11-12 22:24:26,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:24:26,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:24:26,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:24:26,323 INFO L130 BoogieDeclarations]: Found specification of procedure ResetChip [2021-11-12 22:24:26,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ResetChip [2021-11-12 22:24:26,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:24:26,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:24:26,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 22:24:26,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 22:24:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 22:24:26,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 22:24:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure irda_device_txqueue_empty [2021-11-12 22:24:26,324 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_device_txqueue_empty [2021-11-12 22:24:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 22:24:26,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 22:24:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2021-11-12 22:24:26,324 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2021-11-12 22:24:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure Sdelay [2021-11-12 22:24:26,325 INFO L138 BoogieDeclarations]: Found implementation of procedure Sdelay [2021-11-12 22:24:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure SetSIR [2021-11-12 22:24:26,325 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSIR [2021-11-12 22:24:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-12 22:24:26,325 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-12 22:24:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure SetMaxRxPacketSize [2021-11-12 22:24:26,325 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMaxRxPacketSize [2021-11-12 22:24:26,326 INFO L130 BoogieDeclarations]: Found specification of procedure GetRecvByte [2021-11-12 22:24:26,326 INFO L138 BoogieDeclarations]: Found implementation of procedure GetRecvByte [2021-11-12 22:24:26,326 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-12 22:24:26,326 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-12 22:24:26,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:24:26,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:24:26,326 INFO L130 BoogieDeclarations]: Found specification of procedure hwreset [2021-11-12 22:24:26,326 INFO L138 BoogieDeclarations]: Found implementation of procedure hwreset [2021-11-12 22:24:26,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:24:26,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:24:26,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 22:24:26,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:24:26,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:24:26,327 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-12 22:24:26,327 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-12 22:24:26,327 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-12 22:24:26,328 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-12 22:24:26,328 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-12 22:24:26,328 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-12 22:24:26,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 22:24:26,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 22:24:26,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-12 22:24:26,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-12 22:24:26,329 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_xmit [2021-11-12 22:24:26,329 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_xmit [2021-11-12 22:24:26,329 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-12 22:24:26,329 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-12 22:24:26,329 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-12 22:24:26,329 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-12 22:24:26,329 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-12 22:24:26,329 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-12 22:24:26,330 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-12 22:24:26,330 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-12 22:24:26,330 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 22:24:26,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 22:24:26,330 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-12 22:24:26,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-12 22:24:26,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 22:24:26,330 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-11-12 22:24:26,331 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-11-12 22:24:26,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 22:24:26,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 22:24:26,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 22:24:26,334 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendByte [2021-11-12 22:24:26,334 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendByte [2021-11-12 22:24:26,334 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-12 22:24:26,334 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-12 22:24:26,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 22:24:26,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 22:24:26,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_via_ircc_cb [2021-11-12 22:24:26,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_via_ircc_cb [2021-11-12 22:24:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendPreambleCount [2021-11-12 22:24:26,336 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendPreambleCount [2021-11-12 22:24:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure InitCard [2021-11-12 22:24:26,336 INFO L138 BoogieDeclarations]: Found implementation of procedure InitCard [2021-11-12 22:24:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 22:24:26,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 22:24:26,337 INFO L130 BoogieDeclarations]: Found specification of procedure SetTimer [2021-11-12 22:24:26,337 INFO L138 BoogieDeclarations]: Found implementation of procedure SetTimer [2021-11-12 22:24:26,337 INFO L130 BoogieDeclarations]: Found specification of procedure ActClk [2021-11-12 22:24:26,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ActClk [2021-11-12 22:24:26,337 INFO L130 BoogieDeclarations]: Found specification of procedure request_dma [2021-11-12 22:24:26,338 INFO L138 BoogieDeclarations]: Found implementation of procedure request_dma [2021-11-12 22:24:26,338 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-12 22:24:26,338 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-12 22:24:26,338 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-11-12 22:24:26,338 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-11-12 22:24:26,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 22:24:26,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 22:24:26,339 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_to_linear_data [2021-11-12 22:24:26,339 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_to_linear_data [2021-11-12 22:24:27,945 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 22:25:07,849 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 22:25:10,094 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:25:10,095 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:25:10,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:25:10 BoogieIcfgContainer [2021-11-12 22:25:10,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:25:10,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:25:10,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:25:10,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:25:10,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:24:20" (1/3) ... [2021-11-12 22:25:10,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0f813d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:25:10, skipping insertion in model container [2021-11-12 22:25:10,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:25" (2/3) ... [2021-11-12 22:25:10,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0f813d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:25:10, skipping insertion in model container [2021-11-12 22:25:10,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:25:10" (3/3) ... [2021-11-12 22:25:10,108 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-12 22:25:10,114 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:25:10,114 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-12 22:25:10,169 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:25:10,175 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=FINITE_AUTOMATA, 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 [2021-11-12 22:25:10,175 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 22:25:10,232 INFO L276 IsEmpty]: Start isEmpty. Operand has 1916 states, 1168 states have (on average 1.2671232876712328) internal successors, (1480), 1194 states have internal predecessors, (1480), 654 states have call successors, (654), 92 states have call predecessors, (654), 91 states have return successors, (650), 638 states have call predecessors, (650), 650 states have call successors, (650) [2021-11-12 22:25:10,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-12 22:25:10,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:10,243 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:25:10,244 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:25:10,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:10,249 INFO L85 PathProgramCache]: Analyzing trace with hash 323938544, now seen corresponding path program 1 times [2021-11-12 22:25:10,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:10,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052825551] [2021-11-12 22:25:10,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:10,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:10,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:10,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:10,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:25:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:13,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:25:13,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-12 22:25:13,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-12 22:25:14,087 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:14,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052825551] [2021-11-12 22:25:14,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052825551] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:25:14,089 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:25:14,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:25:14,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55963545] [2021-11-12 22:25:14,092 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:25:14,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:25:14,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:25:14,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:25:14,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:25:14,133 INFO L87 Difference]: Start difference. First operand has 1916 states, 1168 states have (on average 1.2671232876712328) internal successors, (1480), 1194 states have internal predecessors, (1480), 654 states have call successors, (654), 92 states have call predecessors, (654), 91 states have return successors, (650), 638 states have call predecessors, (650), 650 states have call successors, (650) Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-12 22:25:16,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:25:23,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:25:23,388 INFO L93 Difference]: Finished difference Result 7491 states and 10982 transitions. [2021-11-12 22:25:23,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:25:23,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 79 [2021-11-12 22:25:23,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:25:23,489 INFO L225 Difference]: With dead ends: 7491 [2021-11-12 22:25:23,490 INFO L226 Difference]: Without dead ends: 5575 [2021-11-12 22:25:23,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:25:23,516 INFO L933 BasicCegarLoop]: 4062 mSDtfsCounter, 5392 mSDsluCounter, 4868 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7798.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5392 SdHoareTripleChecker+Valid, 8930 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.59ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8514.01ms IncrementalHoareTripleChecker+Time [2021-11-12 22:25:23,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5392 Valid, 8930 Invalid, 1298 Unknown, 0 Unchecked, 79.59ms Time], IncrementalHoareTripleChecker [7 Valid, 1290 Invalid, 1 Unknown, 0 Unchecked, 8514.01ms Time] [2021-11-12 22:25:23,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5575 states. [2021-11-12 22:25:24,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5575 to 5547. [2021-11-12 22:25:24,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5547 states, 3390 states have (on average 1.2648967551622419) internal successors, (4288), 3463 states have internal predecessors, (4288), 1886 states have call successors, (1886), 269 states have call predecessors, (1886), 268 states have return successors, (1883), 1847 states have call predecessors, (1883), 1883 states have call successors, (1883) [2021-11-12 22:25:24,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5547 states to 5547 states and 8057 transitions. [2021-11-12 22:25:24,111 INFO L78 Accepts]: Start accepts. Automaton has 5547 states and 8057 transitions. Word has length 79 [2021-11-12 22:25:24,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:25:24,112 INFO L470 AbstractCegarLoop]: Abstraction has 5547 states and 8057 transitions. [2021-11-12 22:25:24,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-12 22:25:24,113 INFO L276 IsEmpty]: Start isEmpty. Operand 5547 states and 8057 transitions. [2021-11-12 22:25:24,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-12 22:25:24,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:24,119 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:25:24,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:25:24,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:25:24,335 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:25:24,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:24,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2114790599, now seen corresponding path program 1 times [2021-11-12 22:25:24,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:24,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144537153] [2021-11-12 22:25:24,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:24,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:24,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:24,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:24,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:25:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:27,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:25:27,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:27,444 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-12 22:25:27,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-12 22:25:27,716 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:27,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144537153] [2021-11-12 22:25:27,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144537153] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:25:27,717 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:25:27,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:25:27,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141965695] [2021-11-12 22:25:27,717 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:25:27,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:25:27,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:25:27,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:25:27,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:25:27,721 INFO L87 Difference]: Start difference. First operand 5547 states and 8057 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-12 22:25:29,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:25:36,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:25:36,020 INFO L93 Difference]: Finished difference Result 19671 states and 28625 transitions. [2021-11-12 22:25:36,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:25:36,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 83 [2021-11-12 22:25:36,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:25:36,332 INFO L225 Difference]: With dead ends: 19671 [2021-11-12 22:25:36,332 INFO L226 Difference]: Without dead ends: 14139 [2021-11-12 22:25:36,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:25:36,378 INFO L933 BasicCegarLoop]: 3866 mSDtfsCounter, 4301 mSDsluCounter, 5546 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6918.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4301 SdHoareTripleChecker+Valid, 9412 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.55ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7414.89ms IncrementalHoareTripleChecker+Time [2021-11-12 22:25:36,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4301 Valid, 9412 Invalid, 1081 Unknown, 0 Unchecked, 57.55ms Time], IncrementalHoareTripleChecker [14 Valid, 1066 Invalid, 1 Unknown, 0 Unchecked, 7414.89ms Time] [2021-11-12 22:25:36,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14139 states. [2021-11-12 22:25:37,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14139 to 14061. [2021-11-12 22:25:37,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14061 states, 8474 states have (on average 1.254661316969554) internal successors, (10632), 8689 states have internal predecessors, (10632), 4872 states have call successors, (4872), 719 states have call predecessors, (4872), 712 states have return successors, (4971), 4739 states have call predecessors, (4971), 4869 states have call successors, (4971) [2021-11-12 22:25:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14061 states to 14061 states and 20475 transitions. [2021-11-12 22:25:37,687 INFO L78 Accepts]: Start accepts. Automaton has 14061 states and 20475 transitions. Word has length 83 [2021-11-12 22:25:37,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:25:37,690 INFO L470 AbstractCegarLoop]: Abstraction has 14061 states and 20475 transitions. [2021-11-12 22:25:37,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-12 22:25:37,691 INFO L276 IsEmpty]: Start isEmpty. Operand 14061 states and 20475 transitions. [2021-11-12 22:25:37,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-12 22:25:37,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:37,699 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:25:37,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:25:37,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:25:37,919 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:25:37,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:37,920 INFO L85 PathProgramCache]: Analyzing trace with hash 391842989, now seen corresponding path program 1 times [2021-11-12 22:25:37,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:37,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624901061] [2021-11-12 22:25:37,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:37,923 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:37,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:37,926 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:37,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:25:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:40,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 1530 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:25:40,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:40,964 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-12 22:25:40,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-12 22:25:41,247 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:41,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624901061] [2021-11-12 22:25:41,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624901061] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:25:41,248 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:25:41,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:25:41,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235384502] [2021-11-12 22:25:41,248 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:25:41,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:25:41,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:25:41,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:25:41,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:25:41,250 INFO L87 Difference]: Start difference. First operand 14061 states and 20475 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-12 22:25:43,500 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:25:51,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:25:51,103 INFO L93 Difference]: Finished difference Result 52437 states and 76455 transitions. [2021-11-12 22:25:51,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:25:51,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 87 [2021-11-12 22:25:51,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:25:51,396 INFO L225 Difference]: With dead ends: 52437 [2021-11-12 22:25:51,396 INFO L226 Difference]: Without dead ends: 38391 [2021-11-12 22:25:51,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:25:51,507 INFO L933 BasicCegarLoop]: 3962 mSDtfsCounter, 5173 mSDsluCounter, 4922 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7337.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5173 SdHoareTripleChecker+Valid, 8884 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.06ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7966.88ms IncrementalHoareTripleChecker+Time [2021-11-12 22:25:51,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5173 Valid, 8884 Invalid, 1323 Unknown, 0 Unchecked, 38.06ms Time], IncrementalHoareTripleChecker [21 Valid, 1301 Invalid, 1 Unknown, 0 Unchecked, 7966.88ms Time] [2021-11-12 22:25:51,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38391 states. [2021-11-12 22:25:54,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38391 to 38289. [2021-11-12 22:25:54,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38289 states, 23009 states have (on average 1.2523360424181842) internal successors, (28815), 23668 states have internal predecessors, (28815), 13311 states have call successors, (13311), 2021 states have call predecessors, (13311), 1966 states have return successors, (13698), 12824 states have call predecessors, (13698), 13308 states have call successors, (13698) [2021-11-12 22:25:55,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38289 states to 38289 states and 55824 transitions. [2021-11-12 22:25:55,011 INFO L78 Accepts]: Start accepts. Automaton has 38289 states and 55824 transitions. Word has length 87 [2021-11-12 22:25:55,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:25:55,013 INFO L470 AbstractCegarLoop]: Abstraction has 38289 states and 55824 transitions. [2021-11-12 22:25:55,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-12 22:25:55,015 INFO L276 IsEmpty]: Start isEmpty. Operand 38289 states and 55824 transitions. [2021-11-12 22:25:55,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-12 22:25:55,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:55,021 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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] [2021-11-12 22:25:55,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:25:55,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:25:55,235 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:25:55,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:55,236 INFO L85 PathProgramCache]: Analyzing trace with hash -656831850, now seen corresponding path program 1 times [2021-11-12 22:25:55,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:55,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336401941] [2021-11-12 22:25:55,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:55,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:55,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:55,243 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:55,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:25:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:57,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:25:57,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-12 22:25:58,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-12 22:25:59,634 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:59,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336401941] [2021-11-12 22:25:59,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336401941] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:25:59,635 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:25:59,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-12 22:25:59,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290377582] [2021-11-12 22:25:59,636 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:25:59,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:25:59,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:25:59,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:25:59,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:25:59,638 INFO L87 Difference]: Start difference. First operand 38289 states and 55824 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-12 22:26:01,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:26:01,291 INFO L93 Difference]: Finished difference Result 38295 states and 55829 transitions. [2021-11-12 22:26:01,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:26:01,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 134 [2021-11-12 22:26:01,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:26:01,531 INFO L225 Difference]: With dead ends: 38295 [2021-11-12 22:26:01,531 INFO L226 Difference]: Without dead ends: 38293 [2021-11-12 22:26:01,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:26:01,559 INFO L933 BasicCegarLoop]: 2761 mSDtfsCounter, 2690 mSDsluCounter, 5508 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2703 SdHoareTripleChecker+Valid, 8269 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.65ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.29ms IncrementalHoareTripleChecker+Time [2021-11-12 22:26:01,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2703 Valid, 8269 Invalid, 23 Unknown, 0 Unchecked, 32.65ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 74.29ms Time] [2021-11-12 22:26:01,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38293 states. [2021-11-12 22:26:04,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38293 to 38293. [2021-11-12 22:26:04,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38293 states, 23012 states have (on average 1.2523031461845993) internal successors, (28818), 23671 states have internal predecessors, (28818), 13311 states have call successors, (13311), 2022 states have call predecessors, (13311), 1967 states have return successors, (13698), 12824 states have call predecessors, (13698), 13308 states have call successors, (13698) [2021-11-12 22:26:04,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38293 states to 38293 states and 55827 transitions. [2021-11-12 22:26:04,508 INFO L78 Accepts]: Start accepts. Automaton has 38293 states and 55827 transitions. Word has length 134 [2021-11-12 22:26:04,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:26:04,509 INFO L470 AbstractCegarLoop]: Abstraction has 38293 states and 55827 transitions. [2021-11-12 22:26:04,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-12 22:26:04,509 INFO L276 IsEmpty]: Start isEmpty. Operand 38293 states and 55827 transitions. [2021-11-12 22:26:04,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-12 22:26:04,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:26:04,515 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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] [2021-11-12 22:26:04,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:26:04,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:26:04,739 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:26:04,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:26:04,740 INFO L85 PathProgramCache]: Analyzing trace with hash 347567025, now seen corresponding path program 1 times [2021-11-12 22:26:04,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:26:04,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123634568] [2021-11-12 22:26:04,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:26:04,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:26:04,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:26:04,749 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:26:04,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:26:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:26:07,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:26:07,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:26:08,653 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-12 22:26:08,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:26:09,322 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-12 22:26:09,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:26:09,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123634568] [2021-11-12 22:26:09,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123634568] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:26:09,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:26:09,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:26:09,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420246608] [2021-11-12 22:26:09,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:26:09,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:26:09,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:26:09,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:26:09,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:26:09,324 INFO L87 Difference]: Start difference. First operand 38293 states and 55827 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-12 22:26:11,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:26:11,105 INFO L93 Difference]: Finished difference Result 38299 states and 55832 transitions. [2021-11-12 22:26:11,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:26:11,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2021-11-12 22:26:11,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:26:11,429 INFO L225 Difference]: With dead ends: 38299 [2021-11-12 22:26:11,430 INFO L226 Difference]: Without dead ends: 38297 [2021-11-12 22:26:11,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:26:11,452 INFO L933 BasicCegarLoop]: 2764 mSDtfsCounter, 2708 mSDsluCounter, 5507 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2720 SdHoareTripleChecker+Valid, 8271 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.56ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.47ms IncrementalHoareTripleChecker+Time [2021-11-12 22:26:11,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2720 Valid, 8271 Invalid, 22 Unknown, 0 Unchecked, 17.56ms Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 73.47ms Time] [2021-11-12 22:26:11,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38297 states. [2021-11-12 22:26:13,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38297 to 38297. [2021-11-12 22:26:13,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38297 states, 23015 states have (on average 1.2522702585270475) internal successors, (28821), 23674 states have internal predecessors, (28821), 13311 states have call successors, (13311), 2023 states have call predecessors, (13311), 1968 states have return successors, (13698), 12824 states have call predecessors, (13698), 13308 states have call successors, (13698) [2021-11-12 22:26:14,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38297 states to 38297 states and 55830 transitions. [2021-11-12 22:26:14,314 INFO L78 Accepts]: Start accepts. Automaton has 38297 states and 55830 transitions. Word has length 139 [2021-11-12 22:26:14,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:26:14,316 INFO L470 AbstractCegarLoop]: Abstraction has 38297 states and 55830 transitions. [2021-11-12 22:26:14,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-12 22:26:14,317 INFO L276 IsEmpty]: Start isEmpty. Operand 38297 states and 55830 transitions. [2021-11-12 22:26:14,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-12 22:26:14,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:26:14,331 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 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] [2021-11-12 22:26:14,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:26:14,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:26:14,555 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:26:14,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:26:14,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2108482762, now seen corresponding path program 1 times [2021-11-12 22:26:14,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:26:14,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275767396] [2021-11-12 22:26:14,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:26:14,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:26:14,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:26:14,561 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:26:14,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:26:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:26:17,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 1622 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:26:17,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:26:18,357 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-11-12 22:26:18,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:26:18,984 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-11-12 22:26:18,984 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:26:18,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275767396] [2021-11-12 22:26:18,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275767396] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:26:18,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:26:18,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:26:18,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402939541] [2021-11-12 22:26:18,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:26:18,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:26:18,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:26:18,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:26:18,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:26:18,987 INFO L87 Difference]: Start difference. First operand 38297 states and 55830 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 22:26:20,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:26:20,686 INFO L93 Difference]: Finished difference Result 38303 states and 55835 transitions. [2021-11-12 22:26:20,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:26:20,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 144 [2021-11-12 22:26:20,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:26:20,927 INFO L225 Difference]: With dead ends: 38303 [2021-11-12 22:26:20,928 INFO L226 Difference]: Without dead ends: 38301 [2021-11-12 22:26:20,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:26:20,958 INFO L933 BasicCegarLoop]: 2764 mSDtfsCounter, 2708 mSDsluCounter, 5507 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2719 SdHoareTripleChecker+Valid, 8271 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.20ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.10ms IncrementalHoareTripleChecker+Time [2021-11-12 22:26:20,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2719 Valid, 8271 Invalid, 22 Unknown, 0 Unchecked, 16.20ms Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 69.10ms Time] [2021-11-12 22:26:21,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38301 states. [2021-11-12 22:26:23,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38301 to 38301. [2021-11-12 22:26:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38301 states, 23018 states have (on average 1.2522373794421757) internal successors, (28824), 23677 states have internal predecessors, (28824), 13311 states have call successors, (13311), 2024 states have call predecessors, (13311), 1969 states have return successors, (13698), 12824 states have call predecessors, (13698), 13308 states have call successors, (13698) [2021-11-12 22:26:23,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38301 states to 38301 states and 55833 transitions. [2021-11-12 22:26:23,752 INFO L78 Accepts]: Start accepts. Automaton has 38301 states and 55833 transitions. Word has length 144 [2021-11-12 22:26:23,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:26:23,753 INFO L470 AbstractCegarLoop]: Abstraction has 38301 states and 55833 transitions. [2021-11-12 22:26:23,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 22:26:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand 38301 states and 55833 transitions. [2021-11-12 22:26:23,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-12 22:26:23,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:26:23,761 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 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] [2021-11-12 22:26:23,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:26:23,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:26:23,983 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:26:23,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:26:23,984 INFO L85 PathProgramCache]: Analyzing trace with hash 972650129, now seen corresponding path program 1 times [2021-11-12 22:26:23,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:26:23,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896564266] [2021-11-12 22:26:23,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:26:23,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:26:23,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:26:23,989 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:26:24,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:26:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:26:26,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:26:26,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:26:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-12 22:26:27,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:26:28,667 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-12 22:26:28,667 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:26:28,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896564266] [2021-11-12 22:26:28,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896564266] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:26:28,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:26:28,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:26:28,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476217831] [2021-11-12 22:26:28,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:26:28,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:26:28,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:26:28,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:26:28,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:26:28,670 INFO L87 Difference]: Start difference. First operand 38301 states and 55833 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-12 22:26:30,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:26:30,526 INFO L93 Difference]: Finished difference Result 38307 states and 55838 transitions. [2021-11-12 22:26:30,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:26:30,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2021-11-12 22:26:30,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:26:30,679 INFO L225 Difference]: With dead ends: 38307 [2021-11-12 22:26:30,679 INFO L226 Difference]: Without dead ends: 38305 [2021-11-12 22:26:30,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:26:30,701 INFO L933 BasicCegarLoop]: 2764 mSDtfsCounter, 2708 mSDsluCounter, 5507 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 8271 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.78ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.84ms IncrementalHoareTripleChecker+Time [2021-11-12 22:26:30,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2718 Valid, 8271 Invalid, 22 Unknown, 0 Unchecked, 13.78ms Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 66.84ms Time] [2021-11-12 22:26:30,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38305 states. [2021-11-12 22:26:33,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38305 to 38305. [2021-11-12 22:26:33,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38305 states, 23021 states have (on average 1.2522045089266323) internal successors, (28827), 23680 states have internal predecessors, (28827), 13311 states have call successors, (13311), 2025 states have call predecessors, (13311), 1970 states have return successors, (13698), 12824 states have call predecessors, (13698), 13308 states have call successors, (13698) [2021-11-12 22:26:33,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38305 states to 38305 states and 55836 transitions. [2021-11-12 22:26:33,386 INFO L78 Accepts]: Start accepts. Automaton has 38305 states and 55836 transitions. Word has length 149 [2021-11-12 22:26:33,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:26:33,387 INFO L470 AbstractCegarLoop]: Abstraction has 38305 states and 55836 transitions. [2021-11-12 22:26:33,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-12 22:26:33,387 INFO L276 IsEmpty]: Start isEmpty. Operand 38305 states and 55836 transitions. [2021-11-12 22:26:33,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-12 22:26:33,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:26:33,396 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2021-11-12 22:26:33,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:26:33,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:26:33,611 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:26:33,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:26:33,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1048187862, now seen corresponding path program 1 times [2021-11-12 22:26:33,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:26:33,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494685790] [2021-11-12 22:26:33,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:26:33,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:26:33,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:26:33,615 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:26:33,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:26:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:26:36,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:26:36,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:26:37,364 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-12 22:26:37,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:26:38,061 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-12 22:26:38,061 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:26:38,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494685790] [2021-11-12 22:26:38,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494685790] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:26:38,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:26:38,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:26:38,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501699762] [2021-11-12 22:26:38,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:26:38,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:26:38,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:26:38,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:26:38,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:26:38,063 INFO L87 Difference]: Start difference. First operand 38305 states and 55836 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 22:26:40,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:26:40,033 INFO L93 Difference]: Finished difference Result 38311 states and 55841 transitions. [2021-11-12 22:26:40,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:26:40,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 154 [2021-11-12 22:26:40,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:26:40,250 INFO L225 Difference]: With dead ends: 38311 [2021-11-12 22:26:40,250 INFO L226 Difference]: Without dead ends: 38309 [2021-11-12 22:26:40,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:26:40,280 INFO L933 BasicCegarLoop]: 2764 mSDtfsCounter, 2708 mSDsluCounter, 5507 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2717 SdHoareTripleChecker+Valid, 8271 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.97ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.46ms IncrementalHoareTripleChecker+Time [2021-11-12 22:26:40,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2717 Valid, 8271 Invalid, 22 Unknown, 0 Unchecked, 13.97ms Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 65.46ms Time] [2021-11-12 22:26:40,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38309 states. [2021-11-12 22:26:42,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38309 to 38309. [2021-11-12 22:26:42,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38309 states, 23024 states have (on average 1.2521716469770674) internal successors, (28830), 23683 states have internal predecessors, (28830), 13311 states have call successors, (13311), 2026 states have call predecessors, (13311), 1971 states have return successors, (13698), 12824 states have call predecessors, (13698), 13308 states have call successors, (13698) [2021-11-12 22:26:43,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38309 states to 38309 states and 55839 transitions. [2021-11-12 22:26:43,375 INFO L78 Accepts]: Start accepts. Automaton has 38309 states and 55839 transitions. Word has length 154 [2021-11-12 22:26:43,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:26:43,376 INFO L470 AbstractCegarLoop]: Abstraction has 38309 states and 55839 transitions. [2021-11-12 22:26:43,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 22:26:43,377 INFO L276 IsEmpty]: Start isEmpty. Operand 38309 states and 55839 transitions. [2021-11-12 22:26:43,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-12 22:26:43,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:26:43,385 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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] [2021-11-12 22:26:43,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:26:43,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:26:43,595 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:26:43,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:26:43,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1756303729, now seen corresponding path program 1 times [2021-11-12 22:26:43,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:26:43,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818030491] [2021-11-12 22:26:43,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:26:43,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:26:43,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:26:43,601 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:26:43,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:26:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:26:46,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:26:46,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:26:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-11-12 22:26:47,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:26:48,099 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-11-12 22:26:48,099 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:26:48,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818030491] [2021-11-12 22:26:48,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818030491] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:26:48,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:26:48,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:26:48,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906662756] [2021-11-12 22:26:48,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:26:48,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:26:48,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:26:48,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:26:48,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:26:48,102 INFO L87 Difference]: Start difference. First operand 38309 states and 55839 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-12 22:26:50,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:26:50,462 INFO L93 Difference]: Finished difference Result 38315 states and 55844 transitions. [2021-11-12 22:26:50,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:26:50,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 159 [2021-11-12 22:26:50,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:26:50,617 INFO L225 Difference]: With dead ends: 38315 [2021-11-12 22:26:50,617 INFO L226 Difference]: Without dead ends: 38313 [2021-11-12 22:26:50,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:26:50,633 INFO L933 BasicCegarLoop]: 2764 mSDtfsCounter, 2708 mSDsluCounter, 5507 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2716 SdHoareTripleChecker+Valid, 8271 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.39ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.77ms IncrementalHoareTripleChecker+Time [2021-11-12 22:26:50,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2716 Valid, 8271 Invalid, 22 Unknown, 0 Unchecked, 13.39ms Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 67.77ms Time] [2021-11-12 22:26:50,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38313 states. [2021-11-12 22:26:53,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38313 to 38313. [2021-11-12 22:26:53,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38313 states, 23027 states have (on average 1.2521387935901334) internal successors, (28833), 23686 states have internal predecessors, (28833), 13311 states have call successors, (13311), 2027 states have call predecessors, (13311), 1972 states have return successors, (13698), 12824 states have call predecessors, (13698), 13308 states have call successors, (13698) [2021-11-12 22:26:53,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38313 states to 38313 states and 55842 transitions. [2021-11-12 22:26:53,441 INFO L78 Accepts]: Start accepts. Automaton has 38313 states and 55842 transitions. Word has length 159 [2021-11-12 22:26:53,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:26:53,442 INFO L470 AbstractCegarLoop]: Abstraction has 38313 states and 55842 transitions. [2021-11-12 22:26:53,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-12 22:26:53,442 INFO L276 IsEmpty]: Start isEmpty. Operand 38313 states and 55842 transitions. [2021-11-12 22:26:53,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-12 22:26:53,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:26:53,452 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:26:53,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-12 22:26:53,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:26:53,675 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:26:53,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:26:53,676 INFO L85 PathProgramCache]: Analyzing trace with hash 433469020, now seen corresponding path program 1 times [2021-11-12 22:26:53,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:26:53,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669273095] [2021-11-12 22:26:53,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:26:53,678 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:26:53,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:26:53,679 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:26:53,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1993bd0f-4998-4af6-9ebd-f0aa62f62dd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:26:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:26:56,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 1798 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:26:56,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:26:57,016 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-12 22:26:57,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:26:57,425 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-12 22:26:57,425 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:26:57,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669273095] [2021-11-12 22:26:57,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669273095] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:26:57,426 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:26:57,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:26:57,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258008990] [2021-11-12 22:26:57,426 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:26:57,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:26:57,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:26:57,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:26:57,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:26:57,427 INFO L87 Difference]: Start difference. First operand 38313 states and 55842 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-12 22:26:59,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []