./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-usb-smsc95xx.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_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/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_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/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-usb-smsc95xx.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/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_92897d94-476d-414a-b27d-d876574fd119/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 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:22:59,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:22:59,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:22:59,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:22:59,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:22:59,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:22:59,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:22:59,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:22:59,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:22:59,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:22:59,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:22:59,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:22:59,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:22:59,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:22:59,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:22:59,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:22:59,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:22:59,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:22:59,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:22:59,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:22:59,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:22:59,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:22:59,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:22:59,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:22:59,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:22:59,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:22:59,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:22:59,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:22:59,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:22:59,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:22:59,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:22:59,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:22:59,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:22:59,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:22:59,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:22:59,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:22:59,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:22:59,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:22:59,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:22:59,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:22:59,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:22:59,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:22:59,812 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:22:59,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:22:59,814 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:22:59,814 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:22:59,814 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:22:59,815 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:22:59,815 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:22:59,815 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:22:59,816 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:22:59,816 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:22:59,817 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:22:59,818 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:22:59,818 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:22:59,818 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:22:59,819 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:22:59,819 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:22:59,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:22:59,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:22:59,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:22:59,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:22:59,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:22:59,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:22:59,821 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:22:59,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:22:59,822 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:22:59,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:22:59,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:22:59,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:22:59,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:22:59,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:22:59,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:22:59,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:22:59,826 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:22:59,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:22:59,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:22:59,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:22:59,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:22:59,828 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_92897d94-476d-414a-b27d-d876574fd119/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 [2021-11-12 22:23:00,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:23:00,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:23:00,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:23:00,191 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:23:00,192 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:23:00,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2021-11-12 22:23:00,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/data/a4d222549/f60e8d1440ad402aa3638d0167cd15a1/FLAG95d6ded8e [2021-11-12 22:23:01,355 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:23:01,356 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2021-11-12 22:23:01,422 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/data/a4d222549/f60e8d1440ad402aa3638d0167cd15a1/FLAG95d6ded8e [2021-11-12 22:23:01,647 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/data/a4d222549/f60e8d1440ad402aa3638d0167cd15a1 [2021-11-12 22:23:01,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:23:01,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:23:01,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:23:01,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:23:01,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:23:01,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:23:01" (1/1) ... [2021-11-12 22:23:01,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f87faef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:01, skipping insertion in model container [2021-11-12 22:23:01,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:23:01" (1/1) ... [2021-11-12 22:23:01,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:23:01,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:23:03,511 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:23:03,513 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:23:05,049 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_92897d94-476d-414a-b27d-d876574fd119/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348095,348108] [2021-11-12 22:23:05,052 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_92897d94-476d-414a-b27d-d876574fd119/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348264,348277] [2021-11-12 22:23:05,053 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_92897d94-476d-414a-b27d-d876574fd119/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348431,348444] [2021-11-12 22:23:05,053 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_92897d94-476d-414a-b27d-d876574fd119/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348599,348612] [2021-11-12 22:23:05,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:23:05,119 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 22:23:05,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@61f0f33b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:05, skipping insertion in model container [2021-11-12 22:23:05,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:23:05,120 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:23:05,123 INFO L158 Benchmark]: Toolchain (without parser) took 3465.76ms. Allocated memory was 111.1MB in the beginning and 148.9MB in the end (delta: 37.7MB). Free memory was 64.6MB in the beginning and 73.3MB in the end (delta: -8.6MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2021-11-12 22:23:05,123 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 83.9MB. Free memory is still 40.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:23:05,124 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3461.16ms. Allocated memory was 111.1MB in the beginning and 148.9MB in the end (delta: 37.7MB). Free memory was 64.4MB in the beginning and 73.3MB in the end (delta: -8.9MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2021-11-12 22:23:05,126 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 83.9MB. Free memory is still 40.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3461.16ms. Allocated memory was 111.1MB in the beginning and 148.9MB in the end (delta: 37.7MB). Free memory was 64.4MB in the beginning and 73.3MB in the end (delta: -8.9MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5624]: 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_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/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_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/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-usb-smsc95xx.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/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_92897d94-476d-414a-b27d-d876574fd119/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 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:23:07,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:23:07,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:23:07,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:23:07,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:23:07,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:23:07,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:23:07,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:23:07,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:23:07,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:23:07,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:23:07,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:23:07,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:23:07,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:23:07,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:23:07,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:23:07,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:23:07,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:23:07,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:23:07,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:23:07,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:23:07,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:23:07,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:23:07,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:23:07,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:23:07,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:23:07,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:23:07,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:23:07,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:23:07,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:23:07,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:23:07,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:23:07,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:23:07,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:23:07,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:23:07,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:23:07,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:23:07,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:23:07,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:23:07,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:23:07,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:23:07,845 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:23:07,894 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:23:07,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:23:07,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:23:07,896 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:23:07,896 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:23:07,897 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:23:07,897 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:23:07,897 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:23:07,897 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:23:07,897 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:23:07,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:23:07,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:23:07,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:23:07,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:23:07,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:23:07,901 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:23:07,901 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:23:07,901 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:23:07,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:23:07,902 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:23:07,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:23:07,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:23:07,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:23:07,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:23:07,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:23:07,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:23:07,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:23:07,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:23:07,904 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:23:07,904 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:23:07,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:23:07,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:23:07,905 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:23:07,905 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_92897d94-476d-414a-b27d-d876574fd119/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 [2021-11-12 22:23:08,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:23:08,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:23:08,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:23:08,413 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:23:08,414 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:23:08,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2021-11-12 22:23:08,500 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/data/331057f8c/43c75ac227d24e7fba5b7c391e08640e/FLAGf7bcb1f97 [2021-11-12 22:23:09,775 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:23:09,777 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2021-11-12 22:23:09,839 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/data/331057f8c/43c75ac227d24e7fba5b7c391e08640e/FLAGf7bcb1f97 [2021-11-12 22:23:10,055 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/data/331057f8c/43c75ac227d24e7fba5b7c391e08640e [2021-11-12 22:23:10,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:23:10,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:23:10,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:23:10,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:23:10,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:23:10,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:23:10" (1/1) ... [2021-11-12 22:23:10,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ca99092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:10, skipping insertion in model container [2021-11-12 22:23:10,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:23:10" (1/1) ... [2021-11-12 22:23:10,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:23:10,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:23:13,365 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_92897d94-476d-414a-b27d-d876574fd119/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348095,348108] [2021-11-12 22:23:13,369 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_92897d94-476d-414a-b27d-d876574fd119/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348264,348277] [2021-11-12 22:23:13,369 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_92897d94-476d-414a-b27d-d876574fd119/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348431,348444] [2021-11-12 22:23:13,378 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_92897d94-476d-414a-b27d-d876574fd119/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348599,348612] [2021-11-12 22:23:13,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:23:13,487 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:23:13,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:23:14,096 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_92897d94-476d-414a-b27d-d876574fd119/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348095,348108] [2021-11-12 22:23:14,097 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_92897d94-476d-414a-b27d-d876574fd119/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348264,348277] [2021-11-12 22:23:14,097 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_92897d94-476d-414a-b27d-d876574fd119/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348431,348444] [2021-11-12 22:23:14,098 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_92897d94-476d-414a-b27d-d876574fd119/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348599,348612] [2021-11-12 22:23:14,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:23:14,177 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:23:14,574 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_92897d94-476d-414a-b27d-d876574fd119/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348095,348108] [2021-11-12 22:23:14,575 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_92897d94-476d-414a-b27d-d876574fd119/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348264,348277] [2021-11-12 22:23:14,576 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_92897d94-476d-414a-b27d-d876574fd119/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348431,348444] [2021-11-12 22:23:14,576 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_92897d94-476d-414a-b27d-d876574fd119/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348599,348612] [2021-11-12 22:23:14,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:23:15,093 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:23:15,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:15 WrapperNode [2021-11-12 22:23:15,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:23:15,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:23:15,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:23:15,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:23:15,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:15" (1/1) ... [2021-11-12 22:23:15,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:15" (1/1) ... [2021-11-12 22:23:15,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:23:15,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:23:15,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:23:15,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:23:15,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:15" (1/1) ... [2021-11-12 22:23:15,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:15" (1/1) ... [2021-11-12 22:23:15,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:15" (1/1) ... [2021-11-12 22:23:15,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:15" (1/1) ... [2021-11-12 22:23:15,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:15" (1/1) ... [2021-11-12 22:23:15,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:15" (1/1) ... [2021-11-12 22:23:16,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:15" (1/1) ... [2021-11-12 22:23:16,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:23:16,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:23:16,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:23:16,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:23:16,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:15" (1/1) ... [2021-11-12 22:23:16,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:23:16,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:23:16,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:23:16,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:23:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 22:23:16,187 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 22:23:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_nway_reset [2021-11-12 22:23:16,188 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_nway_reset [2021-11-12 22:23:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_link_reset [2021-11-12 22:23:16,188 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_link_reset [2021-11-12 22:23:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 22:23:16,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 22:23:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure smsc_crc [2021-11-12 22:23:16,189 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc_crc [2021-11-12 22:23:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_ethtool_getregslen [2021-11-12 22:23:16,190 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_ethtool_getregslen [2021-11-12 22:23:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_mdio_write [2021-11-12 22:23:16,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_mdio_write [2021-11-12 22:23:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 22:23:16,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 22:23:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2021-11-12 22:23:16,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2021-11-12 22:23:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg_nopm [2021-11-12 22:23:16,191 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg_nopm [2021-11-12 22:23:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_smsc95xx_driver_exit_6_2 [2021-11-12 22:23:16,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_smsc95xx_driver_exit_6_2 [2021-11-12 22:23:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enable_phy_wakeup_interrupts [2021-11-12 22:23:16,192 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enable_phy_wakeup_interrupts [2021-11-12 22:23:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 22:23:16,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 22:23:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd_nopm [2021-11-12 22:23:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-12 22:23:16,194 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-12 22:23:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 22:23:16,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 22:23:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:23:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-12 22:23:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:23:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:23:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 22:23:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg [2021-11-12 22:23:16,196 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg [2021-11-12 22:23:16,196 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_rx_csum_offload [2021-11-12 22:23:16,196 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_rx_csum_offload [2021-11-12 22:23:16,196 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_reg_nopm [2021-11-12 22:23:16,197 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_reg_nopm [2021-11-12 22:23:16,197 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2021-11-12 22:23:16,198 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2021-11-12 22:23:16,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 22:23:16,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 22:23:16,199 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2021-11-12 22:23:16,199 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2021-11-12 22:23:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2021-11-12 22:23:16,200 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2021-11-12 22:23:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_write_nopm [2021-11-12 22:23:16,200 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_write_nopm [2021-11-12 22:23:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 22:23:16,201 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 22:23:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_ethtool_get_eeprom_len [2021-11-12 22:23:16,201 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_ethtool_get_eeprom_len [2021-11-12 22:23:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd [2021-11-12 22:23:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-11-12 22:23:16,202 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-11-12 22:23:16,203 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd_nopm [2021-11-12 22:23:16,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 22:23:16,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 22:23:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:23:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-12 22:23:16,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-12 22:23:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-12 22:23:16,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-12 22:23:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 22:23:16,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 22:23:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-12 22:23:16,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-12 22:23:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:23:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 22:23:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 22:23:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_start_rx_path [2021-11-12 22:23:16,207 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_start_rx_path [2021-11-12 22:23:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 22:23:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2021-11-12 22:23:16,208 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2021-11-12 22:23:16,208 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_write_reg [2021-11-12 22:23:16,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_write_reg [2021-11-12 22:23:16,208 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_set_features [2021-11-12 22:23:16,209 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_set_features [2021-11-12 22:23:16,209 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-12 22:23:16,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-12 22:23:16,210 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_wait_eeprom [2021-11-12 22:23:16,210 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_wait_eeprom [2021-11-12 22:23:16,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 22:23:16,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:23:16,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:23:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_read_reg [2021-11-12 22:23:16,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_read_reg [2021-11-12 22:23:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:23:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-12 22:23:16,211 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-12 22:23:16,212 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-12 22:23:16,212 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-12 22:23:16,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:23:16,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:23:16,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 22:23:16,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 22:23:16,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 22:23:16,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 22:23:16,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 22:23:16,216 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-11-12 22:23:16,219 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-11-12 22:23:16,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 22:23:16,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 22:23:16,219 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_reset [2021-11-12 22:23:16,220 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_reset [2021-11-12 22:23:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2021-11-12 22:23:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2021-11-12 22:23:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mac_cr_lock_of_smsc95xx_priv [2021-11-12 22:23:16,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mac_cr_lock_of_smsc95xx_priv [2021-11-12 22:23:16,229 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_reg [2021-11-12 22:23:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_reg [2021-11-12 22:23:16,229 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-12 22:23:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-12 22:23:16,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 22:23:16,230 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 22:23:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_write [2021-11-12 22:23:16,230 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_write [2021-11-12 22:23:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:23:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-12 22:23:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-12 22:23:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:23:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enter_suspend1 [2021-11-12 22:23:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enter_suspend1 [2021-11-12 22:23:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enter_suspend2 [2021-11-12 22:23:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enter_suspend2 [2021-11-12 22:23:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:23:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:23:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 22:23:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_eeprom [2021-11-12 22:23:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_eeprom [2021-11-12 22:23:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:23:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_set_multicast [2021-11-12 22:23:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_set_multicast [2021-11-12 22:23:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:23:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_start_offset [2021-11-12 22:23:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_start_offset [2021-11-12 22:23:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-12 22:23:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-12 22:23:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-12 22:23:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-12 22:23:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-12 22:23:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-12 22:23:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 22:23:16,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 22:23:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-12 22:23:16,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-12 22:23:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_read [2021-11-12 22:23:16,235 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_read [2021-11-12 22:23:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_phy_wait_not_busy [2021-11-12 22:23:16,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_phy_wait_not_busy [2021-11-12 22:23:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2021-11-12 22:23:16,236 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2021-11-12 22:23:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_2_4 [2021-11-12 22:23:16,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_2_4 [2021-11-12 22:23:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg_async [2021-11-12 22:23:16,237 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg_async [2021-11-12 22:23:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 22:23:16,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 22:23:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-12 22:23:16,237 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-12 22:23:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_read_nopm [2021-11-12 22:23:16,238 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_read_nopm [2021-11-12 22:23:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_resume [2021-11-12 22:23:16,238 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_resume [2021-11-12 22:23:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-12 22:23:16,238 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-12 22:23:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 22:23:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 22:23:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 22:23:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 22:23:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 22:23:16,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 22:23:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd [2021-11-12 22:23:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~X~~u16~0~X~$Pointer$~X~~u16~0~TO~C_INT [2021-11-12 22:23:16,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~X~~u16~0~X~$Pointer$~X~~u16~0~TO~C_INT [2021-11-12 22:23:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_mdio_read [2021-11-12 22:23:16,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_mdio_read [2021-11-12 22:23:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_eeprom_confirm_not_busy [2021-11-12 22:23:16,240 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_eeprom_confirm_not_busy [2021-11-12 22:23:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 22:23:16,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 22:23:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 22:23:16,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 22:23:17,736 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 22:24:24,312 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 22:24:24,380 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:24:24,380 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:24:24,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:24:24 BoogieIcfgContainer [2021-11-12 22:24:24,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:24:24,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:24:24,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:24:24,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:24:24,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:23:10" (1/3) ... [2021-11-12 22:24:24,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36dc91ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:24:24, skipping insertion in model container [2021-11-12 22:24:24,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:15" (2/3) ... [2021-11-12 22:24:24,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36dc91ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:24:24, skipping insertion in model container [2021-11-12 22:24:24,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:24:24" (3/3) ... [2021-11-12 22:24:24,394 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2021-11-12 22:24:24,400 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:24:24,400 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-12 22:24:24,461 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:24:24,467 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 22:24:24,467 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 22:24:24,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 1697 states, 1232 states have (on average 1.3465909090909092) internal successors, (1659), 1238 states have internal predecessors, (1659), 386 states have call successors, (386), 77 states have call predecessors, (386), 76 states have return successors, (379), 379 states have call predecessors, (379), 379 states have call successors, (379) [2021-11-12 22:24:24,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-12 22:24:24,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:24:24,551 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:24,552 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 22:24:24,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:24:24,557 INFO L85 PathProgramCache]: Analyzing trace with hash -2048722027, now seen corresponding path program 1 times [2021-11-12 22:24:24,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:24:24,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654832868] [2021-11-12 22:24:24,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:24:24,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:24:24,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:24:24,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:24:24,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:24:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:24:31,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 2380 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:24:31,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:24:31,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2021-11-12 22:24:31,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:24:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2021-11-12 22:24:32,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:24:32,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654832868] [2021-11-12 22:24:32,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654832868] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:24:32,433 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:24:32,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:24:32,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402103160] [2021-11-12 22:24:32,441 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:24:32,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:24:32,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:24:32,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:24:32,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:24:32,499 INFO L87 Difference]: Start difference. First operand has 1697 states, 1232 states have (on average 1.3465909090909092) internal successors, (1659), 1238 states have internal predecessors, (1659), 386 states have call successors, (386), 77 states have call predecessors, (386), 76 states have return successors, (379), 379 states have call predecessors, (379), 379 states have call successors, (379) Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-12 22:24:34,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:24:40,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:24:40,277 INFO L93 Difference]: Finished difference Result 6485 states and 9759 transitions. [2021-11-12 22:24:40,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:24:40,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 228 [2021-11-12 22:24:40,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:24:40,346 INFO L225 Difference]: With dead ends: 6485 [2021-11-12 22:24:40,346 INFO L226 Difference]: Without dead ends: 4810 [2021-11-12 22:24:40,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 452 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 22:24:40,374 INFO L933 BasicCegarLoop]: 3101 mSDtfsCounter, 4574 mSDsluCounter, 6060 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6411.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4574 SdHoareTripleChecker+Valid, 9161 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 71.60ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7169.24ms IncrementalHoareTripleChecker+Time [2021-11-12 22:24:40,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4574 Valid, 9161 Invalid, 839 Unknown, 0 Unchecked, 71.60ms Time], IncrementalHoareTripleChecker [26 Valid, 812 Invalid, 1 Unknown, 0 Unchecked, 7169.24ms Time] [2021-11-12 22:24:40,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2021-11-12 22:24:40,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4784. [2021-11-12 22:24:40,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4784 states, 3527 states have (on average 1.3442018712787072) internal successors, (4741), 3541 states have internal predecessors, (4741), 1033 states have call successors, (1033), 222 states have call predecessors, (1033), 221 states have return successors, (1029), 1029 states have call predecessors, (1029), 1029 states have call successors, (1029) [2021-11-12 22:24:40,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4784 states to 4784 states and 6803 transitions. [2021-11-12 22:24:40,744 INFO L78 Accepts]: Start accepts. Automaton has 4784 states and 6803 transitions. Word has length 228 [2021-11-12 22:24:40,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:24:40,746 INFO L470 AbstractCegarLoop]: Abstraction has 4784 states and 6803 transitions. [2021-11-12 22:24:40,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-12 22:24:40,747 INFO L276 IsEmpty]: Start isEmpty. Operand 4784 states and 6803 transitions. [2021-11-12 22:24:40,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-12 22:24:40,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:24:40,756 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:40,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:24:40,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:24:40,957 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 22:24:40,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:24:40,958 INFO L85 PathProgramCache]: Analyzing trace with hash 775454786, now seen corresponding path program 1 times [2021-11-12 22:24:40,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:24:40,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815358958] [2021-11-12 22:24:40,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:24:40,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:24:40,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:24:40,964 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:24:40,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:24:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:24:46,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 2453 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:24:46,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:24:47,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2021-11-12 22:24:47,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:24:48,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2021-11-12 22:24:48,222 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:24:48,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815358958] [2021-11-12 22:24:48,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815358958] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:24:48,222 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:24:48,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:24:48,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295887289] [2021-11-12 22:24:48,223 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:24:48,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:24:48,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:24:48,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:24:48,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:24:48,226 INFO L87 Difference]: Start difference. First operand 4784 states and 6803 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-12 22:24:50,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:24:51,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:24:51,475 INFO L93 Difference]: Finished difference Result 12042 states and 17130 transitions. [2021-11-12 22:24:51,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:24:51,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 243 [2021-11-12 22:24:51,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:24:51,545 INFO L225 Difference]: With dead ends: 12042 [2021-11-12 22:24:51,545 INFO L226 Difference]: Without dead ends: 7299 [2021-11-12 22:24:51,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:24:51,572 INFO L933 BasicCegarLoop]: 2821 mSDtfsCounter, 1987 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2727.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 5121 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.08ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2856.73ms IncrementalHoareTripleChecker+Time [2021-11-12 22:24:51,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1987 Valid, 5121 Invalid, 95 Unknown, 0 Unchecked, 22.08ms Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 1 Unknown, 0 Unchecked, 2856.73ms Time] [2021-11-12 22:24:51,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7299 states. [2021-11-12 22:24:51,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7299 to 7272. [2021-11-12 22:24:51,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7272 states, 5299 states have (on average 1.3455368937535384) internal successors, (7130), 5324 states have internal predecessors, (7130), 1605 states have call successors, (1605), 366 states have call predecessors, (1605), 365 states have return successors, (1601), 1596 states have call predecessors, (1601), 1601 states have call successors, (1601) [2021-11-12 22:24:51,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7272 states to 7272 states and 10336 transitions. [2021-11-12 22:24:51,980 INFO L78 Accepts]: Start accepts. Automaton has 7272 states and 10336 transitions. Word has length 243 [2021-11-12 22:24:51,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:24:51,982 INFO L470 AbstractCegarLoop]: Abstraction has 7272 states and 10336 transitions. [2021-11-12 22:24:51,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-12 22:24:51,983 INFO L276 IsEmpty]: Start isEmpty. Operand 7272 states and 10336 transitions. [2021-11-12 22:24:51,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-12 22:24:51,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:24:51,995 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:24:52,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:24:52,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:24:52,209 INFO L402 AbstractCegarLoop]: === Iteration 3 === 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 22:24:52,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:24:52,210 INFO L85 PathProgramCache]: Analyzing trace with hash -681413580, now seen corresponding path program 1 times [2021-11-12 22:24:52,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:24:52,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754940146] [2021-11-12 22:24:52,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:24:52,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:24:52,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:24:52,214 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:24:52,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:24:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:24:58,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 2508 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:24:58,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1647 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2021-11-12 22:25:00,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1647 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2021-11-12 22:25:01,851 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:01,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754940146] [2021-11-12 22:25:01,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754940146] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:25:01,852 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:25:01,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-12 22:25:01,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636828065] [2021-11-12 22:25:01,852 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:25:01,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:25:01,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:25:01,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:25:01,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:25:01,855 INFO L87 Difference]: Start difference. First operand 7272 states and 10336 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (57), 4 states have call predecessors, (57), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-12 22:25:02,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:25:02,414 INFO L93 Difference]: Finished difference Result 7278 states and 10341 transitions. [2021-11-12 22:25:02,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:25:02,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (57), 4 states have call predecessors, (57), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 287 [2021-11-12 22:25:02,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:25:02,476 INFO L225 Difference]: With dead ends: 7278 [2021-11-12 22:25:02,476 INFO L226 Difference]: Without dead ends: 7276 [2021-11-12 22:25:02,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 567 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 22:25:02,487 INFO L933 BasicCegarLoop]: 2385 mSDtfsCounter, 2270 mSDsluCounter, 7132 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2281 SdHoareTripleChecker+Valid, 9517 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.51ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 129.27ms IncrementalHoareTripleChecker+Time [2021-11-12 22:25:02,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2281 Valid, 9517 Invalid, 34 Unknown, 0 Unchecked, 30.51ms Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 129.27ms Time] [2021-11-12 22:25:02,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7276 states. [2021-11-12 22:25:02,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7276 to 7276. [2021-11-12 22:25:02,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7276 states, 5302 states have (on average 1.34534138061109) internal successors, (7133), 5327 states have internal predecessors, (7133), 1605 states have call successors, (1605), 367 states have call predecessors, (1605), 366 states have return successors, (1601), 1596 states have call predecessors, (1601), 1601 states have call successors, (1601) [2021-11-12 22:25:02,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7276 states to 7276 states and 10339 transitions. [2021-11-12 22:25:02,936 INFO L78 Accepts]: Start accepts. Automaton has 7276 states and 10339 transitions. Word has length 287 [2021-11-12 22:25:02,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:25:02,941 INFO L470 AbstractCegarLoop]: Abstraction has 7276 states and 10339 transitions. [2021-11-12 22:25:02,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (57), 4 states have call predecessors, (57), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-12 22:25:02,942 INFO L276 IsEmpty]: Start isEmpty. Operand 7276 states and 10339 transitions. [2021-11-12 22:25:02,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-12 22:25:02,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:02,956 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:25:03,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:25:03,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:25:03,169 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 22:25:03,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:03,170 INFO L85 PathProgramCache]: Analyzing trace with hash -2099691453, now seen corresponding path program 1 times [2021-11-12 22:25:03,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:03,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870842187] [2021-11-12 22:25:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:03,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:03,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:03,177 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:03,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:25:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:09,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:25:09,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2021-11-12 22:25:11,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:12,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2021-11-12 22:25:12,945 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:12,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870842187] [2021-11-12 22:25:12,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870842187] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:25:12,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:25:12,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:25:12,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572111001] [2021-11-12 22:25:12,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:25:12,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:25:12,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:25:12,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:25:12,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:25:12,948 INFO L87 Difference]: Start difference. First operand 7276 states and 10339 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-12 22:25:13,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:25:13,419 INFO L93 Difference]: Finished difference Result 7282 states and 10344 transitions. [2021-11-12 22:25:13,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:25:13,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 292 [2021-11-12 22:25:13,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:25:13,501 INFO L225 Difference]: With dead ends: 7282 [2021-11-12 22:25:13,501 INFO L226 Difference]: Without dead ends: 7280 [2021-11-12 22:25:13,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 577 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 22:25:13,508 INFO L933 BasicCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.66ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.63ms IncrementalHoareTripleChecker+Time [2021-11-12 22:25:13,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2314 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 21.66ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 76.63ms Time] [2021-11-12 22:25:13,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7280 states. [2021-11-12 22:25:13,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7280 to 7280. [2021-11-12 22:25:13,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7280 states, 5305 states have (on average 1.3451460885956645) internal successors, (7136), 5330 states have internal predecessors, (7136), 1605 states have call successors, (1605), 368 states have call predecessors, (1605), 367 states have return successors, (1601), 1596 states have call predecessors, (1601), 1601 states have call successors, (1601) [2021-11-12 22:25:13,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7280 states to 7280 states and 10342 transitions. [2021-11-12 22:25:13,958 INFO L78 Accepts]: Start accepts. Automaton has 7280 states and 10342 transitions. Word has length 292 [2021-11-12 22:25:13,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:25:13,959 INFO L470 AbstractCegarLoop]: Abstraction has 7280 states and 10342 transitions. [2021-11-12 22:25:13,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-12 22:25:13,959 INFO L276 IsEmpty]: Start isEmpty. Operand 7280 states and 10342 transitions. [2021-11-12 22:25:13,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-12 22:25:13,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:13,973 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:25:14,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:25:14,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:25:14,173 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 22:25:14,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:14,174 INFO L85 PathProgramCache]: Analyzing trace with hash -948454060, now seen corresponding path program 1 times [2021-11-12 22:25:14,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:14,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164878083] [2021-11-12 22:25:14,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:14,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:14,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:14,182 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:14,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:25:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:20,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 2522 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:25:20,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2021-11-12 22:25:22,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:23,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2021-11-12 22:25:23,647 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:23,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164878083] [2021-11-12 22:25:23,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164878083] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:25:23,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:25:23,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:25:23,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880109378] [2021-11-12 22:25:23,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:25:23,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:25:23,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:25:23,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:25:23,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:25:23,651 INFO L87 Difference]: Start difference. First operand 7280 states and 10342 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-12 22:25:24,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:25:24,211 INFO L93 Difference]: Finished difference Result 7286 states and 10347 transitions. [2021-11-12 22:25:24,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:25:24,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 297 [2021-11-12 22:25:24,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:25:24,248 INFO L225 Difference]: With dead ends: 7286 [2021-11-12 22:25:24,248 INFO L226 Difference]: Without dead ends: 7284 [2021-11-12 22:25:24,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 587 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 22:25:24,254 INFO L933 BasicCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2313 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.12ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.28ms IncrementalHoareTripleChecker+Time [2021-11-12 22:25:24,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2313 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 18.12ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 76.28ms Time] [2021-11-12 22:25:24,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7284 states. [2021-11-12 22:25:24,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7284 to 7284. [2021-11-12 22:25:24,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7284 states, 5308 states have (on average 1.3449510173323285) internal successors, (7139), 5333 states have internal predecessors, (7139), 1605 states have call successors, (1605), 369 states have call predecessors, (1605), 368 states have return successors, (1601), 1596 states have call predecessors, (1601), 1601 states have call successors, (1601) [2021-11-12 22:25:24,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7284 states to 7284 states and 10345 transitions. [2021-11-12 22:25:24,689 INFO L78 Accepts]: Start accepts. Automaton has 7284 states and 10345 transitions. Word has length 297 [2021-11-12 22:25:24,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:25:24,690 INFO L470 AbstractCegarLoop]: Abstraction has 7284 states and 10345 transitions. [2021-11-12 22:25:24,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-12 22:25:24,690 INFO L276 IsEmpty]: Start isEmpty. Operand 7284 states and 10345 transitions. [2021-11-12 22:25:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-11-12 22:25:24,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:24,706 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 5, 5, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:24,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:25:24,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:25:24,929 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 22:25:24,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:24,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2041422695, now seen corresponding path program 1 times [2021-11-12 22:25:24,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:24,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066282629] [2021-11-12 22:25:24,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:24,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:24,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:24,934 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:24,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:25:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:30,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 2571 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:25:30,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1674 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 1582 trivial. 0 not checked. [2021-11-12 22:25:31,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:31,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1674 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1663 trivial. 0 not checked. [2021-11-12 22:25:31,988 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:31,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066282629] [2021-11-12 22:25:31,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066282629] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:25:31,989 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:25:31,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:25:31,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928962987] [2021-11-12 22:25:31,989 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:25:31,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:25:31,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:25:31,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:25:31,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:25:31,990 INFO L87 Difference]: Start difference. First operand 7284 states and 10345 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2021-11-12 22:25:34,310 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:25:38,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:25:38,987 INFO L93 Difference]: Finished difference Result 17453 states and 24777 transitions. [2021-11-12 22:25:38,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:25:38,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 311 [2021-11-12 22:25:38,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:25:39,045 INFO L225 Difference]: With dead ends: 17453 [2021-11-12 22:25:39,045 INFO L226 Difference]: Without dead ends: 11522 [2021-11-12 22:25:39,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 618 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 22:25:39,076 INFO L933 BasicCegarLoop]: 4873 mSDtfsCounter, 4563 mSDsluCounter, 3831 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5808.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4563 SdHoareTripleChecker+Valid, 8704 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.27ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6358.12ms IncrementalHoareTripleChecker+Time [2021-11-12 22:25:39,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4563 Valid, 8704 Invalid, 812 Unknown, 0 Unchecked, 31.27ms Time], IncrementalHoareTripleChecker [16 Valid, 795 Invalid, 1 Unknown, 0 Unchecked, 6358.12ms Time] [2021-11-12 22:25:39,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11522 states. [2021-11-12 22:25:39,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11522 to 11484. [2021-11-12 22:25:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11484 states, 8380 states have (on average 1.3448687350835322) internal successors, (11270), 8413 states have internal predecessors, (11270), 2517 states have call successors, (2517), 585 states have call predecessors, (2517), 584 states have return successors, (2513), 2509 states have call predecessors, (2513), 2513 states have call successors, (2513) [2021-11-12 22:25:39,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11484 states to 11484 states and 16300 transitions. [2021-11-12 22:25:39,796 INFO L78 Accepts]: Start accepts. Automaton has 11484 states and 16300 transitions. Word has length 311 [2021-11-12 22:25:39,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:25:39,799 INFO L470 AbstractCegarLoop]: Abstraction has 11484 states and 16300 transitions. [2021-11-12 22:25:39,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2021-11-12 22:25:39,799 INFO L276 IsEmpty]: Start isEmpty. Operand 11484 states and 16300 transitions. [2021-11-12 22:25:39,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-11-12 22:25:39,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:39,816 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:39,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:25:40,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:25:40,037 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 22:25:40,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:40,038 INFO L85 PathProgramCache]: Analyzing trace with hash -299294395, now seen corresponding path program 1 times [2021-11-12 22:25:40,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:40,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113345991] [2021-11-12 22:25:40,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:40,042 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:40,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:40,043 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:40,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:25:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:45,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 2572 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:25:45,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1675 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 1582 trivial. 0 not checked. [2021-11-12 22:25:46,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1675 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1663 trivial. 0 not checked. [2021-11-12 22:25:47,251 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:47,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113345991] [2021-11-12 22:25:47,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113345991] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:25:47,252 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:25:47,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:25:47,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937510916] [2021-11-12 22:25:47,252 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:25:47,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:25:47,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:25:47,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:25:47,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:25:47,254 INFO L87 Difference]: Start difference. First operand 11484 states and 16300 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2021-11-12 22:25:49,664 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:25:54,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:25:54,531 INFO L93 Difference]: Finished difference Result 24547 states and 34823 transitions. [2021-11-12 22:25:54,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:25:54,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 312 [2021-11-12 22:25:54,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:25:54,611 INFO L225 Difference]: With dead ends: 24547 [2021-11-12 22:25:54,611 INFO L226 Difference]: Without dead ends: 14416 [2021-11-12 22:25:54,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 620 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 22:25:54,662 INFO L933 BasicCegarLoop]: 5005 mSDtfsCounter, 4590 mSDsluCounter, 4295 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6027.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4590 SdHoareTripleChecker+Valid, 9300 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.18ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6513.10ms IncrementalHoareTripleChecker+Time [2021-11-12 22:25:54,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4590 Valid, 9300 Invalid, 814 Unknown, 0 Unchecked, 36.18ms Time], IncrementalHoareTripleChecker [15 Valid, 798 Invalid, 1 Unknown, 0 Unchecked, 6513.10ms Time] [2021-11-12 22:25:54,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14416 states. [2021-11-12 22:25:55,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14416 to 14348. [2021-11-12 22:25:55,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14348 states, 10480 states have (on average 1.3440839694656488) internal successors, (14086), 10519 states have internal predecessors, (14086), 3137 states have call successors, (3137), 729 states have call predecessors, (3137), 728 states have return successors, (3133), 3129 states have call predecessors, (3133), 3133 states have call successors, (3133) [2021-11-12 22:25:55,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14348 states to 14348 states and 20356 transitions. [2021-11-12 22:25:55,677 INFO L78 Accepts]: Start accepts. Automaton has 14348 states and 20356 transitions. Word has length 312 [2021-11-12 22:25:55,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:25:55,678 INFO L470 AbstractCegarLoop]: Abstraction has 14348 states and 20356 transitions. [2021-11-12 22:25:55,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2021-11-12 22:25:55,679 INFO L276 IsEmpty]: Start isEmpty. Operand 14348 states and 20356 transitions. [2021-11-12 22:25:55,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-12 22:25:55,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:55,691 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 4, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:25:55,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:25:55,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:25:55,917 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 22:25:55,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:55,918 INFO L85 PathProgramCache]: Analyzing trace with hash 545184419, now seen corresponding path program 1 times [2021-11-12 22:25:55,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:55,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748886965] [2021-11-12 22:25:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:55,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:55,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:55,923 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:55,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:26:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:26:01,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 2529 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:26:01,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:26:03,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1665 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1659 trivial. 0 not checked. [2021-11-12 22:26:03,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:26:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1665 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1659 trivial. 0 not checked. [2021-11-12 22:26:05,192 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:26:05,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748886965] [2021-11-12 22:26:05,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748886965] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:26:05,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:26:05,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:26:05,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214924418] [2021-11-12 22:26:05,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:26:05,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:26:05,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:26:05,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:26:05,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:26:05,196 INFO L87 Difference]: Start difference. First operand 14348 states and 20356 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 22:26:05,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:26:05,953 INFO L93 Difference]: Finished difference Result 14354 states and 20361 transitions. [2021-11-12 22:26:05,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:26:05,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 302 [2021-11-12 22:26:05,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:26:06,025 INFO L225 Difference]: With dead ends: 14354 [2021-11-12 22:26:06,026 INFO L226 Difference]: Without dead ends: 14352 [2021-11-12 22:26:06,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:26:06,034 INFO L933 BasicCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2312 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.82ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.93ms IncrementalHoareTripleChecker+Time [2021-11-12 22:26:06,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2312 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 11.82ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 63.93ms Time] [2021-11-12 22:26:06,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14352 states. [2021-11-12 22:26:07,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14352 to 14352. [2021-11-12 22:26:07,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14352 states, 10483 states have (on average 1.3439855003338739) internal successors, (14089), 10522 states have internal predecessors, (14089), 3137 states have call successors, (3137), 730 states have call predecessors, (3137), 729 states have return successors, (3133), 3129 states have call predecessors, (3133), 3133 states have call successors, (3133) [2021-11-12 22:26:07,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14352 states to 14352 states and 20359 transitions. [2021-11-12 22:26:07,089 INFO L78 Accepts]: Start accepts. Automaton has 14352 states and 20359 transitions. Word has length 302 [2021-11-12 22:26:07,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:26:07,090 INFO L470 AbstractCegarLoop]: Abstraction has 14352 states and 20359 transitions. [2021-11-12 22:26:07,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 22:26:07,091 INFO L276 IsEmpty]: Start isEmpty. Operand 14352 states and 20359 transitions. [2021-11-12 22:26:07,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-12 22:26:07,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:26:07,102 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 5, 4, 4, 4, 4, 4, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:26:07,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:26:07,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:26:07,317 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 22:26:07,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:26:07,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1464716916, now seen corresponding path program 1 times [2021-11-12 22:26:07,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:26:07,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288582546] [2021-11-12 22:26:07,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:26:07,323 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:26:07,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:26:07,324 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:26:07,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:26:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:26:13,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 2536 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:26:13,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:26:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1679 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1671 trivial. 0 not checked. [2021-11-12 22:26:15,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:26:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1679 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1671 trivial. 0 not checked. [2021-11-12 22:26:17,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:26:17,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288582546] [2021-11-12 22:26:17,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288582546] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:26:17,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:26:17,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:26:17,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482839853] [2021-11-12 22:26:17,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:26:17,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:26:17,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:26:17,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:26:17,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:26:17,042 INFO L87 Difference]: Start difference. First operand 14352 states and 20359 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-12 22:26:17,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:26:17,704 INFO L93 Difference]: Finished difference Result 14358 states and 20364 transitions. [2021-11-12 22:26:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:26:17,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 307 [2021-11-12 22:26:17,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:26:17,774 INFO L225 Difference]: With dead ends: 14358 [2021-11-12 22:26:17,774 INFO L226 Difference]: Without dead ends: 14356 [2021-11-12 22:26:17,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 607 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 22:26:17,785 INFO L933 BasicCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2311 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.15ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.80ms IncrementalHoareTripleChecker+Time [2021-11-12 22:26:17,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2311 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 12.15ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 65.80ms Time] [2021-11-12 22:26:17,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14356 states. [2021-11-12 22:26:18,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14356 to 14356. [2021-11-12 22:26:18,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14356 states, 10486 states have (on average 1.3438870875452984) internal successors, (14092), 10525 states have internal predecessors, (14092), 3137 states have call successors, (3137), 731 states have call predecessors, (3137), 730 states have return successors, (3133), 3129 states have call predecessors, (3133), 3133 states have call successors, (3133) [2021-11-12 22:26:18,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14356 states to 14356 states and 20362 transitions. [2021-11-12 22:26:18,927 INFO L78 Accepts]: Start accepts. Automaton has 14356 states and 20362 transitions. Word has length 307 [2021-11-12 22:26:18,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:26:18,928 INFO L470 AbstractCegarLoop]: Abstraction has 14356 states and 20362 transitions. [2021-11-12 22:26:18,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-12 22:26:18,928 INFO L276 IsEmpty]: Start isEmpty. Operand 14356 states and 20362 transitions. [2021-11-12 22:26:18,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2021-11-12 22:26:18,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:26:18,939 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:19,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:26:19,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:26:19,153 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 22:26:19,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:26:19,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1342567629, now seen corresponding path program 1 times [2021-11-12 22:26:19,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:26:19,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252682684] [2021-11-12 22:26:19,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:26:19,160 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:26:19,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:26:19,161 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:26:19,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:26:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:26:25,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 3211 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:26:25,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:26:27,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1623 trivial. 0 not checked. [2021-11-12 22:26:27,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:26:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2021-11-12 22:26:28,125 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:26:28,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252682684] [2021-11-12 22:26:28,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252682684] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:26:28,125 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:26:28,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:26:28,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675441348] [2021-11-12 22:26:28,126 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:26:28,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:26:28,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:26:28,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:26:28,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:26:28,128 INFO L87 Difference]: Start difference. First operand 14356 states and 20362 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (58), 3 states have call predecessors, (58), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-12 22:26:30,461 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 22:26:31,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:26:31,638 INFO L93 Difference]: Finished difference Result 38734 states and 54986 transitions. [2021-11-12 22:26:31,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:26:31,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (58), 3 states have call predecessors, (58), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 435 [2021-11-12 22:26:31,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:26:31,741 INFO L225 Difference]: With dead ends: 38734 [2021-11-12 22:26:31,741 INFO L226 Difference]: Without dead ends: 24419 [2021-11-12 22:26:31,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 867 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:26:31,794 INFO L933 BasicCegarLoop]: 2757 mSDtfsCounter, 1936 mSDsluCounter, 2348 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2444.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 5105 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.19ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2530.48ms IncrementalHoareTripleChecker+Time [2021-11-12 22:26:31,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1936 Valid, 5105 Invalid, 47 Unknown, 0 Unchecked, 8.19ms Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 1 Unknown, 0 Unchecked, 2530.48ms Time] [2021-11-12 22:26:31,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24419 states. [2021-11-12 22:26:33,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24419 to 24370. [2021-11-12 22:26:33,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24370 states, 17686 states have (on average 1.3438312789777225) internal successors, (23767), 17743 states have internal predecessors, (23767), 5409 states have call successors, (5409), 1273 states have call predecessors, (5409), 1272 states have return successors, (5405), 5390 states have call predecessors, (5405), 5405 states have call successors, (5405) [2021-11-12 22:26:33,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24370 states to 24370 states and 34581 transitions. [2021-11-12 22:26:33,315 INFO L78 Accepts]: Start accepts. Automaton has 24370 states and 34581 transitions. Word has length 435 [2021-11-12 22:26:33,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:26:33,316 INFO L470 AbstractCegarLoop]: Abstraction has 24370 states and 34581 transitions. [2021-11-12 22:26:33,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (58), 3 states have call predecessors, (58), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-12 22:26:33,316 INFO L276 IsEmpty]: Start isEmpty. Operand 24370 states and 34581 transitions. [2021-11-12 22:26:33,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-11-12 22:26:33,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:26:33,325 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 6, 5, 5, 4, 4, 4, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:26:33,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:26:33,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:26:33,541 INFO L402 AbstractCegarLoop]: === Iteration 11 === 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 22:26:33,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:26:33,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1067494659, now seen corresponding path program 1 times [2021-11-12 22:26:33,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:26:33,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083335653] [2021-11-12 22:26:33,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:26:33,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:26:33,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:26:33,548 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:26:33,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:26:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:26:39,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 2543 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:26:39,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:26:41,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1697 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1687 trivial. 0 not checked. [2021-11-12 22:26:41,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:26:43,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1697 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1687 trivial. 0 not checked. [2021-11-12 22:26:43,231 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:26:43,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083335653] [2021-11-12 22:26:43,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083335653] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:26:43,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:26:43,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:26:43,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466282999] [2021-11-12 22:26:43,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:26:43,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:26:43,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:26:43,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:26:43,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:26:43,234 INFO L87 Difference]: Start difference. First operand 24370 states and 34581 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-12 22:26:44,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:26:44,456 INFO L93 Difference]: Finished difference Result 24376 states and 34586 transitions. [2021-11-12 22:26:44,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:26:44,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 312 [2021-11-12 22:26:44,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:26:44,544 INFO L225 Difference]: With dead ends: 24376 [2021-11-12 22:26:44,544 INFO L226 Difference]: Without dead ends: 24374 [2021-11-12 22:26:44,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 617 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 22:26:44,561 INFO L933 BasicCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.22ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.99ms IncrementalHoareTripleChecker+Time [2021-11-12 22:26:44,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2310 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 13.22ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 77.99ms Time] [2021-11-12 22:26:44,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24374 states. [2021-11-12 22:26:45,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24374 to 24374. [2021-11-12 22:26:45,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24374 states, 17689 states have (on average 1.343772966250212) internal successors, (23770), 17746 states have internal predecessors, (23770), 5409 states have call successors, (5409), 1274 states have call predecessors, (5409), 1273 states have return successors, (5405), 5390 states have call predecessors, (5405), 5405 states have call successors, (5405) [2021-11-12 22:26:46,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24374 states to 24374 states and 34584 transitions. [2021-11-12 22:26:46,048 INFO L78 Accepts]: Start accepts. Automaton has 24374 states and 34584 transitions. Word has length 312 [2021-11-12 22:26:46,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:26:46,049 INFO L470 AbstractCegarLoop]: Abstraction has 24374 states and 34584 transitions. [2021-11-12 22:26:46,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-12 22:26:46,049 INFO L276 IsEmpty]: Start isEmpty. Operand 24374 states and 34584 transitions. [2021-11-12 22:26:46,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-11-12 22:26:46,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:26:46,057 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:46,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-12 22:26:46,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:26:46,257 INFO L402 AbstractCegarLoop]: === Iteration 12 === 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 22:26:46,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:26:46,258 INFO L85 PathProgramCache]: Analyzing trace with hash 381872330, now seen corresponding path program 1 times [2021-11-12 22:26:46,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:26:46,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657161722] [2021-11-12 22:26:46,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:26:46,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:26:46,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:26:46,263 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:26:46,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:26:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:26:52,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 3238 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:26:52,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:26:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1623 trivial. 0 not checked. [2021-11-12 22:26:54,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:26:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2021-11-12 22:26:55,471 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:26:55,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657161722] [2021-11-12 22:26:55,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657161722] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:26:55,471 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:26:55,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:26:55,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272757813] [2021-11-12 22:26:55,472 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:26:55,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:26:55,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:26:55,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:26:55,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:26:55,474 INFO L87 Difference]: Start difference. First operand 24374 states and 34584 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2021-11-12 22:26:57,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:27:05,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:27:05,170 INFO L93 Difference]: Finished difference Result 77676 states and 109693 transitions. [2021-11-12 22:27:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:27:05,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) Word has length 441 [2021-11-12 22:27:05,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:27:05,350 INFO L225 Difference]: With dead ends: 77676 [2021-11-12 22:27:05,350 INFO L226 Difference]: Without dead ends: 53343 [2021-11-12 22:27:05,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 878 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 22:27:05,413 INFO L933 BasicCegarLoop]: 3408 mSDtfsCounter, 4834 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 433 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6389.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4834 SdHoareTripleChecker+Valid, 6813 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.86ms SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6999.42ms IncrementalHoareTripleChecker+Time [2021-11-12 22:27:05,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4834 Valid, 6813 Invalid, 1246 Unknown, 0 Unchecked, 21.86ms Time], IncrementalHoareTripleChecker [433 Valid, 812 Invalid, 1 Unknown, 0 Unchecked, 6999.42ms Time] [2021-11-12 22:27:05,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53343 states. [2021-11-12 22:27:08,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53343 to 53169. [2021-11-12 22:27:08,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53169 states, 39085 states have (on average 1.3402072406293974) internal successors, (52382), 39290 states have internal predecessors, (52382), 11192 states have call successors, (11192), 2890 states have call predecessors, (11192), 2889 states have return successors, (11188), 11061 states have call predecessors, (11188), 11188 states have call successors, (11188) [2021-11-12 22:27:09,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53169 states to 53169 states and 74762 transitions. [2021-11-12 22:27:09,021 INFO L78 Accepts]: Start accepts. Automaton has 53169 states and 74762 transitions. Word has length 441 [2021-11-12 22:27:09,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:27:09,022 INFO L470 AbstractCegarLoop]: Abstraction has 53169 states and 74762 transitions. [2021-11-12 22:27:09,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2021-11-12 22:27:09,023 INFO L276 IsEmpty]: Start isEmpty. Operand 53169 states and 74762 transitions. [2021-11-12 22:27:09,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-11-12 22:27:09,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:27:09,031 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 7, 6, 6, 4, 4, 4, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:27:09,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:27:09,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:27:09,236 INFO L402 AbstractCegarLoop]: === Iteration 13 === 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 22:27:09,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:27:09,237 INFO L85 PathProgramCache]: Analyzing trace with hash -2104842348, now seen corresponding path program 1 times [2021-11-12 22:27:09,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:27:09,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694651659] [2021-11-12 22:27:09,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:09,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:27:09,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:27:09,244 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:27:09,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 22:27:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:27:15,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 2550 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:27:15,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:27:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1719 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1707 trivial. 0 not checked. [2021-11-12 22:27:17,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:27:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1719 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1707 trivial. 0 not checked. [2021-11-12 22:27:18,791 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:27:18,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694651659] [2021-11-12 22:27:18,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694651659] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:27:18,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:27:18,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:27:18,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708476132] [2021-11-12 22:27:18,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:27:18,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:27:18,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:27:18,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:27:18,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:27:18,793 INFO L87 Difference]: Start difference. First operand 53169 states and 74762 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-12 22:27:21,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:27:21,571 INFO L93 Difference]: Finished difference Result 53175 states and 74767 transitions. [2021-11-12 22:27:21,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:27:21,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 317 [2021-11-12 22:27:21,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:27:21,738 INFO L225 Difference]: With dead ends: 53175 [2021-11-12 22:27:21,738 INFO L226 Difference]: Without dead ends: 53173 [2021-11-12 22:27:21,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 627 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 22:27:21,755 INFO L933 BasicCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.10ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.85ms IncrementalHoareTripleChecker+Time [2021-11-12 22:27:21,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2309 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 12.10ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 64.85ms Time] [2021-11-12 22:27:21,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53173 states. [2021-11-12 22:27:25,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53173 to 53173. [2021-11-12 22:27:25,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53173 states, 39088 states have (on average 1.3401811297584936) internal successors, (52385), 39293 states have internal predecessors, (52385), 11192 states have call successors, (11192), 2891 states have call predecessors, (11192), 2890 states have return successors, (11188), 11061 states have call predecessors, (11188), 11188 states have call successors, (11188) [2021-11-12 22:27:25,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53173 states to 53173 states and 74765 transitions. [2021-11-12 22:27:25,357 INFO L78 Accepts]: Start accepts. Automaton has 53173 states and 74765 transitions. Word has length 317 [2021-11-12 22:27:25,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:27:25,358 INFO L470 AbstractCegarLoop]: Abstraction has 53173 states and 74765 transitions. [2021-11-12 22:27:25,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-12 22:27:25,358 INFO L276 IsEmpty]: Start isEmpty. Operand 53173 states and 74765 transitions. [2021-11-12 22:27:25,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-12 22:27:25,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:27:25,366 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 8, 7, 7, 4, 4, 4, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:27:25,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-12 22:27:25,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:27:25,581 INFO L402 AbstractCegarLoop]: === Iteration 14 === 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 22:27:25,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:27:25,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1012447075, now seen corresponding path program 1 times [2021-11-12 22:27:25,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:27:25,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732158591] [2021-11-12 22:27:25,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:25,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:27:25,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:27:25,588 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:27:25,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 22:27:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:27:31,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 2557 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:27:31,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:27:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1731 trivial. 0 not checked. [2021-11-12 22:27:34,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:27:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1731 trivial. 0 not checked. [2021-11-12 22:27:35,338 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:27:35,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732158591] [2021-11-12 22:27:35,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732158591] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:27:35,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:27:35,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:27:35,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776419198] [2021-11-12 22:27:35,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:27:35,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:27:35,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:27:35,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:27:35,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:27:35,341 INFO L87 Difference]: Start difference. First operand 53173 states and 74765 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-12 22:27:38,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:27:38,143 INFO L93 Difference]: Finished difference Result 53536 states and 75025 transitions. [2021-11-12 22:27:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:27:38,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 322 [2021-11-12 22:27:38,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:27:38,296 INFO L225 Difference]: With dead ends: 53536 [2021-11-12 22:27:38,296 INFO L226 Difference]: Without dead ends: 53534 [2021-11-12 22:27:38,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 637 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 22:27:38,311 INFO L933 BasicCegarLoop]: 2388 mSDtfsCounter, 2221 mSDsluCounter, 4843 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 7231 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.08ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.63ms IncrementalHoareTripleChecker+Time [2021-11-12 22:27:38,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2225 Valid, 7231 Invalid, 22 Unknown, 0 Unchecked, 13.08ms Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 68.63ms Time] [2021-11-12 22:27:38,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53534 states. [2021-11-12 22:27:41,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53534 to 53534. [2021-11-12 22:27:41,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53534 states, 39346 states have (on average 1.337950490520002) internal successors, (52643), 39551 states have internal predecessors, (52643), 11192 states have call successors, (11192), 2994 states have call predecessors, (11192), 2993 states have return successors, (11188), 11061 states have call predecessors, (11188), 11188 states have call successors, (11188) [2021-11-12 22:27:42,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53534 states to 53534 states and 75023 transitions. [2021-11-12 22:27:42,053 INFO L78 Accepts]: Start accepts. Automaton has 53534 states and 75023 transitions. Word has length 322 [2021-11-12 22:27:42,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:27:42,054 INFO L470 AbstractCegarLoop]: Abstraction has 53534 states and 75023 transitions. [2021-11-12 22:27:42,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-12 22:27:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand 53534 states and 75023 transitions. [2021-11-12 22:27:42,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-11-12 22:27:42,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:27:42,069 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 9, 8, 8, 4, 4, 4, 2, 2, 2, 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, 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 22:27:42,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 22:27:42,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:27:42,293 INFO L402 AbstractCegarLoop]: === Iteration 15 === 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 22:27:42,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:27:42,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1834240180, now seen corresponding path program 1 times [2021-11-12 22:27:42,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:27:42,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104919161] [2021-11-12 22:27:42,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:42,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:27:42,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:27:42,301 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:27:42,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 22:27:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:27:48,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 2564 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:27:48,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:27:51,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1775 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2021-11-12 22:27:51,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:27:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1775 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2021-11-12 22:27:52,301 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:27:52,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104919161] [2021-11-12 22:27:52,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104919161] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:27:52,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:27:52,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:27:52,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921071636] [2021-11-12 22:27:52,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:27:52,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:27:52,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:27:52,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:27:52,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:27:52,303 INFO L87 Difference]: Start difference. First operand 53534 states and 75023 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-12 22:27:55,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:27:55,267 INFO L93 Difference]: Finished difference Result 53540 states and 75028 transitions. [2021-11-12 22:27:55,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:27:55,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 327 [2021-11-12 22:27:55,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:27:55,438 INFO L225 Difference]: With dead ends: 53540 [2021-11-12 22:27:55,438 INFO L226 Difference]: Without dead ends: 53538 [2021-11-12 22:27:55,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 647 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 22:27:55,457 INFO L933 BasicCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.47ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.33ms IncrementalHoareTripleChecker+Time [2021-11-12 22:27:55,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2307 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 12.47ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 70.33ms Time] [2021-11-12 22:27:55,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53538 states. [2021-11-12 22:27:59,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53538 to 53538. [2021-11-12 22:27:59,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53538 states, 39349 states have (on average 1.3379247248977102) internal successors, (52646), 39554 states have internal predecessors, (52646), 11192 states have call successors, (11192), 2995 states have call predecessors, (11192), 2994 states have return successors, (11188), 11061 states have call predecessors, (11188), 11188 states have call successors, (11188) [2021-11-12 22:27:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53538 states to 53538 states and 75026 transitions. [2021-11-12 22:27:59,448 INFO L78 Accepts]: Start accepts. Automaton has 53538 states and 75026 transitions. Word has length 327 [2021-11-12 22:27:59,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:27:59,449 INFO L470 AbstractCegarLoop]: Abstraction has 53538 states and 75026 transitions. [2021-11-12 22:27:59,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-12 22:27:59,449 INFO L276 IsEmpty]: Start isEmpty. Operand 53538 states and 75026 transitions. [2021-11-12 22:27:59,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-11-12 22:27:59,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:27:59,457 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 10, 9, 9, 4, 4, 4, 2, 2, 2, 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, 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 22:27:59,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-12 22:27:59,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:27:59,658 INFO L402 AbstractCegarLoop]: === Iteration 16 === 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 22:27:59,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:27:59,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1707017789, now seen corresponding path program 1 times [2021-11-12 22:27:59,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:27:59,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947629631] [2021-11-12 22:27:59,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:59,662 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:27:59,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:27:59,663 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:27:59,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92897d94-476d-414a-b27d-d876574fd119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 22:28:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:28:05,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 2571 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:28:05,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:28:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1791 trivial. 0 not checked. [2021-11-12 22:28:08,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:28:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1791 trivial. 0 not checked. [2021-11-12 22:28:09,741 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:28:09,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947629631] [2021-11-12 22:28:09,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947629631] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:28:09,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:28:09,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:28:09,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355859884] [2021-11-12 22:28:09,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:28:09,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:28:09,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:28:09,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:28:09,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:28:09,744 INFO L87 Difference]: Start difference. First operand 53538 states and 75026 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36)