./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.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_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/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_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/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-ethernet-8390-axnet_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/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_288ea883-af4e-42cc-901a-3255d597102e/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 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:27:55,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:27:55,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:27:55,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:27:55,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:27:55,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:27:55,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:27:55,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:27:55,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:27:55,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:27:55,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:27:55,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:27:55,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:27:55,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:27:55,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:27:55,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:27:55,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:27:55,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:27:55,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:27:55,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:27:55,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:27:55,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:27:55,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:27:55,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:27:55,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:27:55,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:27:55,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:27:55,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:27:55,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:27:55,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:27:55,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:27:55,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:27:55,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:27:55,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:27:55,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:27:55,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:27:55,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:27:55,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:27:55,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:27:55,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:27:55,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:27:55,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:27:55,928 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:27:55,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:27:55,930 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:27:55,930 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:27:55,930 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:27:55,931 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:27:55,931 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:27:55,931 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:27:55,932 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:27:55,932 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:27:55,940 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:27:55,940 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:27:55,941 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:27:55,941 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:27:55,941 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:27:55,941 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:27:55,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:27:55,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:27:55,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:27:55,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:27:55,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:27:55,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:27:55,944 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:27:55,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:27:55,944 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:27:55,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:27:55,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:27:55,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:27:55,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:27:55,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:27:55,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:27:55,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:27:55,948 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:27:55,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:27:55,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:27:55,948 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:27:55,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:27:55,949 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_288ea883-af4e-42cc-901a-3255d597102e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b [2021-11-12 22:27:56,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:27:56,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:27:56,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:27:56,253 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:27:56,254 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:27:56,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2021-11-12 22:27:56,327 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/data/6f380ed4f/22cba489c01b4537b13c3607935c811f/FLAGd072502d6 [2021-11-12 22:27:57,354 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:27:57,356 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2021-11-12 22:27:57,410 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/data/6f380ed4f/22cba489c01b4537b13c3607935c811f/FLAGd072502d6 [2021-11-12 22:27:57,739 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/data/6f380ed4f/22cba489c01b4537b13c3607935c811f [2021-11-12 22:27:57,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:27:57,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:27:57,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:27:57,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:27:57,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:27:57,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:27:57" (1/1) ... [2021-11-12 22:27:57,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b29f578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:57, skipping insertion in model container [2021-11-12 22:27:57,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:27:57" (1/1) ... [2021-11-12 22:27:57,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:27:57,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:27:59,845 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 22:27:59,847 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 22:28:00,827 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_288ea883-af4e-42cc-901a-3255d597102e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2021-11-12 22:28:00,831 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_288ea883-af4e-42cc-901a-3255d597102e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2021-11-12 22:28:00,831 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_288ea883-af4e-42cc-901a-3255d597102e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2021-11-12 22:28:00,835 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_288ea883-af4e-42cc-901a-3255d597102e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2021-11-12 22:28:00,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:28:00,972 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 22:28:00,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7385ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:28:00, skipping insertion in model container [2021-11-12 22:28:00,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:28:00,973 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:28:00,976 INFO L158 Benchmark]: Toolchain (without parser) took 3232.28ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 65.0MB in the beginning and 96.6MB in the end (delta: -31.7MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2021-11-12 22:28:00,977 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 109.1MB. Free memory was 65.3MB in the beginning and 65.3MB in the end (delta: 45.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:28:00,978 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3229.50ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 64.8MB in the beginning and 96.6MB in the end (delta: -31.9MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2021-11-12 22:28:00,980 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 109.1MB. Free memory was 65.3MB in the beginning and 65.3MB in the end (delta: 45.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3229.50ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 64.8MB in the beginning and 96.6MB in the end (delta: -31.9MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5889]: 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_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/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_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/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-ethernet-8390-axnet_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/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_288ea883-af4e-42cc-901a-3255d597102e/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 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:28:03,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:28:03,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:28:03,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:28:03,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:28:03,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:28:03,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:28:03,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:28:03,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:28:03,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:28:03,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:28:03,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:28:03,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:28:03,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:28:03,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:28:03,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:28:03,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:28:03,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:28:03,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:28:03,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:28:03,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:28:03,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:28:03,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:28:03,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:28:03,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:28:03,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:28:03,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:28:03,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:28:03,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:28:03,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:28:03,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:28:03,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:28:03,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:28:03,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:28:03,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:28:03,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:28:03,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:28:03,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:28:03,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:28:03,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:28:03,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:28:03,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:28:03,704 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:28:03,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:28:03,706 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:28:03,706 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:28:03,706 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:28:03,706 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:28:03,707 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:28:03,707 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:28:03,707 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:28:03,707 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:28:03,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:28:03,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:28:03,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:28:03,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:28:03,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:28:03,712 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:28:03,713 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:28:03,713 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:28:03,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:28:03,713 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:28:03,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:28:03,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:28:03,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:28:03,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:28:03,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:28:03,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:28:03,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:28:03,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:28:03,717 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:28:03,717 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:28:03,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:28:03,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:28:03,718 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:28:03,718 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_288ea883-af4e-42cc-901a-3255d597102e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b [2021-11-12 22:28:04,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:28:04,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:28:04,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:28:04,139 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:28:04,141 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:28:04,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2021-11-12 22:28:04,229 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/data/cb26a3999/422d3e75b7e64fff983d18730aaf103b/FLAG5645314b3 [2021-11-12 22:28:05,218 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:28:05,219 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2021-11-12 22:28:05,300 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/data/cb26a3999/422d3e75b7e64fff983d18730aaf103b/FLAG5645314b3 [2021-11-12 22:28:05,616 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/data/cb26a3999/422d3e75b7e64fff983d18730aaf103b [2021-11-12 22:28:05,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:28:05,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:28:05,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:28:05,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:28:05,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:28:05,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:28:05" (1/1) ... [2021-11-12 22:28:05,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@571bb639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:28:05, skipping insertion in model container [2021-11-12 22:28:05,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:28:05" (1/1) ... [2021-11-12 22:28:05,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:28:05,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:28:08,779 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_288ea883-af4e-42cc-901a-3255d597102e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2021-11-12 22:28:08,782 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_288ea883-af4e-42cc-901a-3255d597102e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2021-11-12 22:28:08,783 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_288ea883-af4e-42cc-901a-3255d597102e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2021-11-12 22:28:08,783 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_288ea883-af4e-42cc-901a-3255d597102e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2021-11-12 22:28:08,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:28:08,888 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:28:08,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:28:09,435 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_288ea883-af4e-42cc-901a-3255d597102e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2021-11-12 22:28:09,436 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_288ea883-af4e-42cc-901a-3255d597102e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2021-11-12 22:28:09,437 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_288ea883-af4e-42cc-901a-3255d597102e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2021-11-12 22:28:09,438 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_288ea883-af4e-42cc-901a-3255d597102e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2021-11-12 22:28:09,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:28:09,523 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:28:09,895 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_288ea883-af4e-42cc-901a-3255d597102e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2021-11-12 22:28:09,896 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_288ea883-af4e-42cc-901a-3255d597102e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2021-11-12 22:28:09,896 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_288ea883-af4e-42cc-901a-3255d597102e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2021-11-12 22:28:09,897 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_288ea883-af4e-42cc-901a-3255d597102e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2021-11-12 22:28:09,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:28:10,220 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:28:10,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:28:10 WrapperNode [2021-11-12 22:28:10,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:28:10,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:28:10,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:28:10,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:28:10,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:28:10" (1/1) ... [2021-11-12 22:28:10,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:28:10" (1/1) ... [2021-11-12 22:28:10,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:28:10,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:28:10,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:28:10,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:28:10,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:28:10" (1/1) ... [2021-11-12 22:28:10,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:28:10" (1/1) ... [2021-11-12 22:28:10,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:28:10" (1/1) ... [2021-11-12 22:28:10,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:28:10" (1/1) ... [2021-11-12 22:28:10,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:28:10" (1/1) ... [2021-11-12 22:28:10,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:28:10" (1/1) ... [2021-11-12 22:28:11,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:28:10" (1/1) ... [2021-11-12 22:28:11,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:28:11,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:28:11,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:28:11,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:28:11,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:28:10" (1/1) ... [2021-11-12 22:28:11,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:28:11,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:28:11,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:28:11,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:28:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:28:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:28:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~X~$Pointer$~X~C_INT~TO~VOID [2021-11-12 22:28:11,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~X~$Pointer$~X~C_INT~TO~VOID [2021-11-12 22:28:11,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:28:11,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_page_lock_of_ei_device [2021-11-12 22:28:11,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_page_lock_of_ei_device [2021-11-12 22:28:11,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 22:28:11,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 22:28:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 22:28:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_detach [2021-11-12 22:28:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_detach [2021-11-12 22:28:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 22:28:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 22:28:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 22:28:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 22:28:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-12 22:28:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-12 22:28:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure AX88190_init [2021-11-12 22:28:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure AX88190_init [2021-11-12 22:28:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 22:28:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 22:28:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2021-11-12 22:28:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2021-11-12 22:28:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-12 22:28:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-12 22:28:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_70 [2021-11-12 22:28:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_70 [2021-11-12 22:28:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 22:28:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 22:28:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure ei_receive [2021-11-12 22:28:11,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_receive [2021-11-12 22:28:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 22:28:11,163 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 22:28:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_axnet_cs_driver_exit_14_2 [2021-11-12 22:28:11,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_axnet_cs_driver_exit_14_2 [2021-11-12 22:28:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-12 22:28:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-12 22:28:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_release [2021-11-12 22:28:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_release [2021-11-12 22:28:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_write_config_byte [2021-11-12 22:28:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_write_config_byte [2021-11-12 22:28:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure insw [2021-11-12 22:28:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure insw [2021-11-12 22:28:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure PRIV [2021-11-12 22:28:11,165 INFO L138 BoogieDeclarations]: Found implementation of procedure PRIV [2021-11-12 22:28:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-12 22:28:11,165 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-12 22:28:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:28:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-12 22:28:11,165 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-12 22:28:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:28:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 22:28:11,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 22:28:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-12 22:28:11,168 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-12 22:28:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2021-11-12 22:28:11,168 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2021-11-12 22:28:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 22:28:11,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 22:28:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure NS8390_trigger_send [2021-11-12 22:28:11,170 INFO L138 BoogieDeclarations]: Found implementation of procedure NS8390_trigger_send [2021-11-12 22:28:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:28:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure ei_tx_intr [2021-11-12 22:28:11,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_tx_intr [2021-11-12 22:28:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:28:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 22:28:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:28:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:28:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:28:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-12 22:28:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:28:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:28:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 22:28:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-12 22:28:11,172 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-12 22:28:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-12 22:28:11,173 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-12 22:28:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-12 22:28:11,173 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-12 22:28:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 22:28:11,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 22:28:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2021-11-12 22:28:11,174 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2021-11-12 22:28:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 22:28:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 22:28:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-12 22:28:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-12 22:28:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure ei_irq_wrapper [2021-11-12 22:28:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_irq_wrapper [2021-11-12 22:28:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-12 22:28:11,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-12 22:28:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-12 22:28:11,176 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-12 22:28:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-12 22:28:11,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-12 22:28:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 22:28:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 22:28:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 22:28:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 22:28:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 22:28:11,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 22:28:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_reset_8390 [2021-11-12 22:28:11,178 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_reset_8390 [2021-11-12 22:28:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_tx_timeout [2021-11-12 22:28:11,183 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_tx_timeout [2021-11-12 22:28:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 22:28:11,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 22:28:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:28:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2021-11-12 22:28:11,185 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2021-11-12 22:28:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-12 22:28:11,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-12 22:28:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_cs_driver_exit [2021-11-12 22:28:11,189 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_cs_driver_exit [2021-11-12 22:28:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 22:28:11,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 22:28:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-12 22:28:11,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-12 22:28:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:28:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 22:28:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 22:28:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 22:28:11,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 22:28:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 22:28:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 22:28:11,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 22:28:11,194 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-12 22:28:11,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-12 22:28:11,194 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2021-11-12 22:28:11,194 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2021-11-12 22:28:11,194 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-12 22:28:11,194 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-12 22:28:11,194 INFO L130 BoogieDeclarations]: Found specification of procedure do_set_multicast_list [2021-11-12 22:28:11,195 INFO L138 BoogieDeclarations]: Found implementation of procedure do_set_multicast_list [2021-11-12 22:28:11,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 22:28:11,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 22:28:11,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 22:28:11,195 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-12 22:28:11,195 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-12 22:28:11,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:28:11,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:28:16,598 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 22:28:56,990 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 22:28:57,106 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:28:57,107 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 22:28:57,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:28:57 BoogieIcfgContainer [2021-11-12 22:28:57,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:28:57,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:28:57,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:28:57,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:28:57,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:28:05" (1/3) ... [2021-11-12 22:28:57,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cff80db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:28:57, skipping insertion in model container [2021-11-12 22:28:57,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:28:10" (2/3) ... [2021-11-12 22:28:57,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cff80db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:28:57, skipping insertion in model container [2021-11-12 22:28:57,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:28:57" (3/3) ... [2021-11-12 22:28:57,122 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2021-11-12 22:28:57,128 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:28:57,128 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-12 22:28:57,198 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:28:57,205 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 22:28:57,205 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 22:28:57,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 1254 states, 829 states have (on average 1.2943305186972256) internal successors, (1073), 853 states have internal predecessors, (1073), 368 states have call successors, (368), 56 states have call predecessors, (368), 55 states have return successors, (362), 354 states have call predecessors, (362), 362 states have call successors, (362) [2021-11-12 22:28:57,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-12 22:28:57,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:28:57,277 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:28:57,277 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 22:28:57,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:28:57,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2140271610, now seen corresponding path program 1 times [2021-11-12 22:28:57,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:28:57,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776134108] [2021-11-12 22:28:57,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:28:57,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:28:57,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:28:57,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:28:57,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:29:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:00,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 2454 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:29:00,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:29:01,433 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-11-12 22:29:01,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:29:01,874 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-12 22:29:01,875 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:29:01,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776134108] [2021-11-12 22:29:01,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776134108] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:01,876 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:01,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:29:01,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716063658] [2021-11-12 22:29:01,879 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:01,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:29:01,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:29:01,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:29:01,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:29:01,938 INFO L87 Difference]: Start difference. First operand has 1254 states, 829 states have (on average 1.2943305186972256) internal successors, (1073), 853 states have internal predecessors, (1073), 368 states have call successors, (368), 56 states have call predecessors, (368), 55 states have return successors, (362), 354 states have call predecessors, (362), 362 states have call successors, (362) Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-12 22:29:04,402 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 22:29:10,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:10,254 INFO L93 Difference]: Finished difference Result 4806 states and 7030 transitions. [2021-11-12 22:29:10,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:29:10,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 105 [2021-11-12 22:29:10,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:10,353 INFO L225 Difference]: With dead ends: 4806 [2021-11-12 22:29:10,354 INFO L226 Difference]: Without dead ends: 3554 [2021-11-12 22:29:10,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 206 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 22:29:10,381 INFO L933 BasicCegarLoop]: 2475 mSDtfsCounter, 4398 mSDsluCounter, 2703 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 675 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6830.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4398 SdHoareTripleChecker+Valid, 5178 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 70.32ms SdHoareTripleChecker+Time, 675 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7669.71ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:10,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4398 Valid, 5178 Invalid, 1428 Unknown, 0 Unchecked, 70.32ms Time], IncrementalHoareTripleChecker [675 Valid, 752 Invalid, 1 Unknown, 0 Unchecked, 7669.71ms Time] [2021-11-12 22:29:10,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2021-11-12 22:29:10,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 3528. [2021-11-12 22:29:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 2362 states have (on average 1.2925486875529213) internal successors, (3053), 2427 states have internal predecessors, (3053), 1005 states have call successors, (1005), 159 states have call predecessors, (1005), 158 states have return successors, (1001), 977 states have call predecessors, (1001), 1001 states have call successors, (1001) [2021-11-12 22:29:10,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 5059 transitions. [2021-11-12 22:29:10,856 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 5059 transitions. Word has length 105 [2021-11-12 22:29:10,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:10,858 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 5059 transitions. [2021-11-12 22:29:10,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-12 22:29:10,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 5059 transitions. [2021-11-12 22:29:10,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-12 22:29:10,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:10,874 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:10,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:29:11,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:29:11,075 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 22:29:11,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:11,076 INFO L85 PathProgramCache]: Analyzing trace with hash -941817147, now seen corresponding path program 1 times [2021-11-12 22:29:11,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:29:11,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007200519] [2021-11-12 22:29:11,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:11,080 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:29:11,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:29:11,084 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:29:11,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:29:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:14,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 2498 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:29:14,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:29:14,889 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-11-12 22:29:14,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:29:15,233 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-12 22:29:15,234 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:29:15,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007200519] [2021-11-12 22:29:15,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007200519] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:15,235 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:15,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:29:15,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224050196] [2021-11-12 22:29:15,235 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:15,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:29:15,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:29:15,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:29:15,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:29:15,238 INFO L87 Difference]: Start difference. First operand 3528 states and 5059 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-12 22:29:17,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:29:18,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:18,394 INFO L93 Difference]: Finished difference Result 9883 states and 14141 transitions. [2021-11-12 22:29:18,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:29:18,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2021-11-12 22:29:18,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:18,476 INFO L225 Difference]: With dead ends: 9883 [2021-11-12 22:29:18,476 INFO L226 Difference]: Without dead ends: 6374 [2021-11-12 22:29:18,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 225 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 22:29:18,501 INFO L933 BasicCegarLoop]: 2141 mSDtfsCounter, 1413 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2513.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 3854 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.51ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2605.44ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:18,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1413 Valid, 3854 Invalid, 53 Unknown, 0 Unchecked, 16.51ms Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 1 Unknown, 0 Unchecked, 2605.44ms Time] [2021-11-12 22:29:18,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6374 states. [2021-11-12 22:29:18,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6374 to 6340. [2021-11-12 22:29:19,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6340 states, 4223 states have (on average 1.2872365616860053) internal successors, (5436), 4342 states have internal predecessors, (5436), 1805 states have call successors, (1805), 307 states have call predecessors, (1805), 309 states have return successors, (1810), 1759 states have call predecessors, (1810), 1801 states have call successors, (1810) [2021-11-12 22:29:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6340 states to 6340 states and 9051 transitions. [2021-11-12 22:29:19,068 INFO L78 Accepts]: Start accepts. Automaton has 6340 states and 9051 transitions. Word has length 114 [2021-11-12 22:29:19,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:19,069 INFO L470 AbstractCegarLoop]: Abstraction has 6340 states and 9051 transitions. [2021-11-12 22:29:19,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-12 22:29:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 6340 states and 9051 transitions. [2021-11-12 22:29:19,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-12 22:29:19,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:19,082 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 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] [2021-11-12 22:29:19,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:29:19,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:29:19,301 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:29:19,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:19,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1596369438, now seen corresponding path program 1 times [2021-11-12 22:29:19,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:29:19,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638876561] [2021-11-12 22:29:19,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:19,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:29:19,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:29:19,309 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:29:19,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:29:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:22,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 2555 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:29:22,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:29:23,275 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-12 22:29:23,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:29:23,659 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-12 22:29:23,660 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:29:23,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638876561] [2021-11-12 22:29:23,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638876561] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:23,660 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:23,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:29:23,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315648271] [2021-11-12 22:29:23,661 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:23,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:29:23,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:29:23,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:29:23,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:29:23,663 INFO L87 Difference]: Start difference. First operand 6340 states and 9051 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-12 22:29:26,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:29:30,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:30,004 INFO L93 Difference]: Finished difference Result 22105 states and 31281 transitions. [2021-11-12 22:29:30,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:29:30,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 119 [2021-11-12 22:29:30,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:30,168 INFO L225 Difference]: With dead ends: 22105 [2021-11-12 22:29:30,168 INFO L226 Difference]: Without dead ends: 15784 [2021-11-12 22:29:30,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 234 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 22:29:30,218 INFO L933 BasicCegarLoop]: 2369 mSDtfsCounter, 2784 mSDsluCounter, 3781 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5061.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2784 SdHoareTripleChecker+Valid, 6150 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.68ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5439.74ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:30,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2784 Valid, 6150 Invalid, 609 Unknown, 0 Unchecked, 34.68ms Time], IncrementalHoareTripleChecker [14 Valid, 594 Invalid, 1 Unknown, 0 Unchecked, 5439.74ms Time] [2021-11-12 22:29:30,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15784 states. [2021-11-12 22:29:31,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15784 to 15710. [2021-11-12 22:29:31,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15710 states, 10446 states have (on average 1.2700555236454145) internal successors, (13267), 10724 states have internal predecessors, (13267), 4423 states have call successors, (4423), 848 states have call predecessors, (4423), 838 states have return successors, (4446), 4263 states have call predecessors, (4446), 4419 states have call successors, (4446) [2021-11-12 22:29:31,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15710 states to 15710 states and 22136 transitions. [2021-11-12 22:29:31,585 INFO L78 Accepts]: Start accepts. Automaton has 15710 states and 22136 transitions. Word has length 119 [2021-11-12 22:29:31,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:31,586 INFO L470 AbstractCegarLoop]: Abstraction has 15710 states and 22136 transitions. [2021-11-12 22:29:31,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-12 22:29:31,587 INFO L276 IsEmpty]: Start isEmpty. Operand 15710 states and 22136 transitions. [2021-11-12 22:29:31,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-12 22:29:31,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:31,591 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 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] [2021-11-12 22:29:31,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:29:31,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:29:31,805 INFO L402 AbstractCegarLoop]: === Iteration 4 === 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 22:29:31,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:31,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1966707762, now seen corresponding path program 1 times [2021-11-12 22:29:31,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:29:31,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336359086] [2021-11-12 22:29:31,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:31,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:29:31,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:29:31,815 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:29:31,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:29:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:35,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 2653 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:29:35,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:29:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-12 22:29:36,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:29:36,598 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-12 22:29:36,598 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:29:36,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336359086] [2021-11-12 22:29:36,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336359086] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:36,599 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:36,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:29:36,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092443776] [2021-11-12 22:29:36,600 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:36,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:29:36,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:29:36,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:29:36,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:29:36,602 INFO L87 Difference]: Start difference. First operand 15710 states and 22136 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-12 22:29:38,956 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:29:41,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:41,861 INFO L93 Difference]: Finished difference Result 34633 states and 48601 transitions. [2021-11-12 22:29:41,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:29:41,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 143 [2021-11-12 22:29:41,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:42,015 INFO L225 Difference]: With dead ends: 34633 [2021-11-12 22:29:42,020 INFO L226 Difference]: Without dead ends: 18942 [2021-11-12 22:29:42,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 282 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 22:29:42,267 INFO L933 BasicCegarLoop]: 2573 mSDtfsCounter, 2561 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3990.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2561 SdHoareTripleChecker+Valid, 3986 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.98ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4251.70ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:42,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2561 Valid, 3986 Invalid, 465 Unknown, 0 Unchecked, 27.98ms Time], IncrementalHoareTripleChecker [35 Valid, 429 Invalid, 1 Unknown, 0 Unchecked, 4251.70ms Time] [2021-11-12 22:29:42,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18942 states. [2021-11-12 22:29:43,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18942 to 18800. [2021-11-12 22:29:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18800 states, 12818 states have (on average 1.2637696988609768) internal successors, (16199), 13292 states have internal predecessors, (16199), 4894 states have call successors, (4894), 1290 states have call predecessors, (4894), 1085 states have return successors, (5034), 4307 states have call predecessors, (5034), 4890 states have call successors, (5034) [2021-11-12 22:29:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18800 states to 18800 states and 26127 transitions. [2021-11-12 22:29:43,869 INFO L78 Accepts]: Start accepts. Automaton has 18800 states and 26127 transitions. Word has length 143 [2021-11-12 22:29:43,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:43,872 INFO L470 AbstractCegarLoop]: Abstraction has 18800 states and 26127 transitions. [2021-11-12 22:29:43,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-12 22:29:43,873 INFO L276 IsEmpty]: Start isEmpty. Operand 18800 states and 26127 transitions. [2021-11-12 22:29:43,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-12 22:29:43,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:43,878 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 4, 4, 4, 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] [2021-11-12 22:29:43,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:29:44,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:29:44,093 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 22:29:44,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:44,094 INFO L85 PathProgramCache]: Analyzing trace with hash 187177513, now seen corresponding path program 1 times [2021-11-12 22:29:44,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:29:44,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019466581] [2021-11-12 22:29:44,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:44,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:29:44,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:29:44,099 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:29:44,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:29:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:47,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 2555 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:29:47,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:29:48,600 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-11-12 22:29:48,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:29:49,385 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-11-12 22:29:49,385 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:29:49,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019466581] [2021-11-12 22:29:49,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019466581] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:49,385 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:49,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-12 22:29:49,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161061013] [2021-11-12 22:29:49,386 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:49,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:29:49,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:29:49,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:29:49,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:29:49,388 INFO L87 Difference]: Start difference. First operand 18800 states and 26127 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-12 22:29:50,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:50,505 INFO L93 Difference]: Finished difference Result 18806 states and 26132 transitions. [2021-11-12 22:29:50,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:29:50,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 161 [2021-11-12 22:29:50,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:50,611 INFO L225 Difference]: With dead ends: 18806 [2021-11-12 22:29:50,611 INFO L226 Difference]: Without dead ends: 18804 [2021-11-12 22:29:50,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 315 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 22:29:50,624 INFO L933 BasicCegarLoop]: 1769 mSDtfsCounter, 1688 mSDsluCounter, 7051 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 102.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 8820 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.17ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111.22ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:50,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1699 Valid, 8820 Invalid, 37 Unknown, 0 Unchecked, 31.17ms Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 111.22ms Time] [2021-11-12 22:29:50,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18804 states. [2021-11-12 22:29:51,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18804 to 18804. [2021-11-12 22:29:51,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18804 states, 12821 states have (on average 1.2637079790967942) internal successors, (16202), 13295 states have internal predecessors, (16202), 4894 states have call successors, (4894), 1291 states have call predecessors, (4894), 1086 states have return successors, (5034), 4307 states have call predecessors, (5034), 4890 states have call successors, (5034) [2021-11-12 22:29:52,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18804 states to 18804 states and 26130 transitions. [2021-11-12 22:29:52,034 INFO L78 Accepts]: Start accepts. Automaton has 18804 states and 26130 transitions. Word has length 161 [2021-11-12 22:29:52,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:52,035 INFO L470 AbstractCegarLoop]: Abstraction has 18804 states and 26130 transitions. [2021-11-12 22:29:52,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-12 22:29:52,035 INFO L276 IsEmpty]: Start isEmpty. Operand 18804 states and 26130 transitions. [2021-11-12 22:29:52,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-12 22:29:52,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:52,041 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 4, 4, 4, 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] [2021-11-12 22:29:52,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:29:52,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:29:52,257 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 22:29:52,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:52,258 INFO L85 PathProgramCache]: Analyzing trace with hash -725170141, now seen corresponding path program 1 times [2021-11-12 22:29:52,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:29:52,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196155053] [2021-11-12 22:29:52,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:52,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:29:52,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:29:52,262 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:29:52,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:29:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:55,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:29:55,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:29:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-11-12 22:29:56,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:29:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-11-12 22:29:57,456 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:29:57,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196155053] [2021-11-12 22:29:57,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196155053] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:29:57,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:29:57,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:29:57,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351317817] [2021-11-12 22:29:57,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:57,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:29:57,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:29:57,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:29:57,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:29:57,459 INFO L87 Difference]: Start difference. First operand 18804 states and 26130 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-12 22:29:58,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:58,626 INFO L93 Difference]: Finished difference Result 18810 states and 26135 transitions. [2021-11-12 22:29:58,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:29:58,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2021-11-12 22:29:58,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:58,726 INFO L225 Difference]: With dead ends: 18810 [2021-11-12 22:29:58,726 INFO L226 Difference]: Without dead ends: 18808 [2021-11-12 22:29:58,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 325 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 22:29:58,736 INFO L933 BasicCegarLoop]: 1772 mSDtfsCounter, 1713 mSDsluCounter, 3525 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.28ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.70ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:58,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1723 Valid, 5297 Invalid, 20 Unknown, 0 Unchecked, 20.28ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 63.70ms Time] [2021-11-12 22:29:58,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18808 states. [2021-11-12 22:30:00,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18808 to 18808. [2021-11-12 22:30:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18808 states, 12824 states have (on average 1.263646288209607) internal successors, (16205), 13298 states have internal predecessors, (16205), 4894 states have call successors, (4894), 1292 states have call predecessors, (4894), 1087 states have return successors, (5034), 4307 states have call predecessors, (5034), 4890 states have call successors, (5034) [2021-11-12 22:30:00,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18808 states to 18808 states and 26133 transitions. [2021-11-12 22:30:00,208 INFO L78 Accepts]: Start accepts. Automaton has 18808 states and 26133 transitions. Word has length 166 [2021-11-12 22:30:00,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:00,209 INFO L470 AbstractCegarLoop]: Abstraction has 18808 states and 26133 transitions. [2021-11-12 22:30:00,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-12 22:30:00,209 INFO L276 IsEmpty]: Start isEmpty. Operand 18808 states and 26133 transitions. [2021-11-12 22:30:00,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-12 22:30:00,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:00,216 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 4, 4, 4, 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] [2021-11-12 22:30:00,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:00,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:00,437 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 22:30:00,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:00,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1057283625, now seen corresponding path program 1 times [2021-11-12 22:30:00,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:00,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415213457] [2021-11-12 22:30:00,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:00,442 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:00,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:00,444 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:00,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:30:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:04,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:30:04,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2021-11-12 22:30:05,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:05,833 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2021-11-12 22:30:05,833 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:05,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415213457] [2021-11-12 22:30:05,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415213457] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:30:05,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:30:05,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:30:05,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35432885] [2021-11-12 22:30:05,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:05,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:30:05,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:05,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:30:05,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:30:05,836 INFO L87 Difference]: Start difference. First operand 18808 states and 26133 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 22:30:06,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:06,825 INFO L93 Difference]: Finished difference Result 18814 states and 26138 transitions. [2021-11-12 22:30:06,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:30:06,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 171 [2021-11-12 22:30:06,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:06,942 INFO L225 Difference]: With dead ends: 18814 [2021-11-12 22:30:06,942 INFO L226 Difference]: Without dead ends: 18812 [2021-11-12 22:30:06,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 335 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 22:30:06,957 INFO L933 BasicCegarLoop]: 1772 mSDtfsCounter, 1713 mSDsluCounter, 3525 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1722 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.62ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.62ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:06,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1722 Valid, 5297 Invalid, 20 Unknown, 0 Unchecked, 14.62ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 52.62ms Time] [2021-11-12 22:30:06,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18812 states. [2021-11-12 22:30:08,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18812 to 18812. [2021-11-12 22:30:08,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18812 states, 12827 states have (on average 1.2635846261791535) internal successors, (16208), 13301 states have internal predecessors, (16208), 4894 states have call successors, (4894), 1293 states have call predecessors, (4894), 1088 states have return successors, (5034), 4307 states have call predecessors, (5034), 4890 states have call successors, (5034) [2021-11-12 22:30:08,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18812 states to 18812 states and 26136 transitions. [2021-11-12 22:30:08,599 INFO L78 Accepts]: Start accepts. Automaton has 18812 states and 26136 transitions. Word has length 171 [2021-11-12 22:30:08,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:08,600 INFO L470 AbstractCegarLoop]: Abstraction has 18812 states and 26136 transitions. [2021-11-12 22:30:08,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 22:30:08,600 INFO L276 IsEmpty]: Start isEmpty. Operand 18812 states and 26136 transitions. [2021-11-12 22:30:08,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-12 22:30:08,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:08,605 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 3, 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] [2021-11-12 22:30:08,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:08,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:08,821 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 22:30:08,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:08,822 INFO L85 PathProgramCache]: Analyzing trace with hash 545174435, now seen corresponding path program 1 times [2021-11-12 22:30:08,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:08,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333086870] [2021-11-12 22:30:08,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:08,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:08,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:08,830 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:08,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:30:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:12,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 2576 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:30:12,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:13,522 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-11-12 22:30:13,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:14,223 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-11-12 22:30:14,223 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:14,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333086870] [2021-11-12 22:30:14,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333086870] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:30:14,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:30:14,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:30:14,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668483576] [2021-11-12 22:30:14,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:14,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:30:14,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:14,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:30:14,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:30:14,226 INFO L87 Difference]: Start difference. First operand 18812 states and 26136 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-12 22:30:15,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:15,354 INFO L93 Difference]: Finished difference Result 18818 states and 26141 transitions. [2021-11-12 22:30:15,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:30:15,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 176 [2021-11-12 22:30:15,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:15,461 INFO L225 Difference]: With dead ends: 18818 [2021-11-12 22:30:15,462 INFO L226 Difference]: Without dead ends: 18816 [2021-11-12 22:30:15,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 345 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 22:30:15,476 INFO L933 BasicCegarLoop]: 1772 mSDtfsCounter, 1713 mSDsluCounter, 3525 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.81ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.11ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:15,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 5297 Invalid, 20 Unknown, 0 Unchecked, 13.81ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 66.11ms Time] [2021-11-12 22:30:15,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18816 states. [2021-11-12 22:30:17,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18816 to 18816. [2021-11-12 22:30:17,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18816 states, 12830 states have (on average 1.263522992985191) internal successors, (16211), 13304 states have internal predecessors, (16211), 4894 states have call successors, (4894), 1294 states have call predecessors, (4894), 1089 states have return successors, (5034), 4307 states have call predecessors, (5034), 4890 states have call successors, (5034) [2021-11-12 22:30:17,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18816 states to 18816 states and 26139 transitions. [2021-11-12 22:30:17,338 INFO L78 Accepts]: Start accepts. Automaton has 18816 states and 26139 transitions. Word has length 176 [2021-11-12 22:30:17,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:17,339 INFO L470 AbstractCegarLoop]: Abstraction has 18816 states and 26139 transitions. [2021-11-12 22:30:17,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-12 22:30:17,340 INFO L276 IsEmpty]: Start isEmpty. Operand 18816 states and 26139 transitions. [2021-11-12 22:30:17,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-12 22:30:17,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:17,347 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:17,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:17,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:17,573 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 22:30:17,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:17,574 INFO L85 PathProgramCache]: Analyzing trace with hash 952221377, now seen corresponding path program 1 times [2021-11-12 22:30:17,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:17,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692582893] [2021-11-12 22:30:17,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:17,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:17,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:17,582 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:17,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:30:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:21,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 2641 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:30:21,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2021-11-12 22:30:21,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:22,079 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2021-11-12 22:30:22,079 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:22,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692582893] [2021-11-12 22:30:22,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692582893] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:22,080 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:22,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:30:22,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15368683] [2021-11-12 22:30:22,080 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:22,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:30:22,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:22,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:30:22,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:22,083 INFO L87 Difference]: Start difference. First operand 18816 states and 26139 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-12 22:30:24,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:30:29,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:29,919 INFO L93 Difference]: Finished difference Result 55217 states and 76742 transitions. [2021-11-12 22:30:29,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:30:29,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) Word has length 196 [2021-11-12 22:30:29,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:30,130 INFO L225 Difference]: With dead ends: 55217 [2021-11-12 22:30:30,130 INFO L226 Difference]: Without dead ends: 36504 [2021-11-12 22:30:30,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 388 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 22:30:30,212 INFO L933 BasicCegarLoop]: 3721 mSDtfsCounter, 3384 mSDsluCounter, 3265 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4947.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3384 SdHoareTripleChecker+Valid, 6986 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.16ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5368.68ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:30,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3384 Valid, 6986 Invalid, 762 Unknown, 0 Unchecked, 24.16ms Time], IncrementalHoareTripleChecker [13 Valid, 748 Invalid, 1 Unknown, 0 Unchecked, 5368.68ms Time] [2021-11-12 22:30:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36504 states. [2021-11-12 22:30:33,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36504 to 36462. [2021-11-12 22:30:33,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36462 states, 24892 states have (on average 1.2602844287321229) internal successors, (31371), 25772 states have internal predecessors, (31371), 9452 states have call successors, (9452), 2524 states have call predecessors, (9452), 2115 states have return successors, (9736), 8345 states have call predecessors, (9736), 9448 states have call successors, (9736) [2021-11-12 22:30:33,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36462 states to 36462 states and 50559 transitions. [2021-11-12 22:30:33,182 INFO L78 Accepts]: Start accepts. Automaton has 36462 states and 50559 transitions. Word has length 196 [2021-11-12 22:30:33,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:33,182 INFO L470 AbstractCegarLoop]: Abstraction has 36462 states and 50559 transitions. [2021-11-12 22:30:33,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-12 22:30:33,183 INFO L276 IsEmpty]: Start isEmpty. Operand 36462 states and 50559 transitions. [2021-11-12 22:30:33,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-12 22:30:33,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:33,190 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 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] [2021-11-12 22:30:33,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:33,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:33,413 INFO L402 AbstractCegarLoop]: === Iteration 10 === 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 22:30:33,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:33,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1959898583, now seen corresponding path program 1 times [2021-11-12 22:30:33,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:33,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248198238] [2021-11-12 22:30:33,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:33,417 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:33,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:33,418 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:33,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:30:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:36,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 2583 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:30:36,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:37,759 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-11-12 22:30:37,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-11-12 22:30:38,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:38,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248198238] [2021-11-12 22:30:38,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248198238] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:30:38,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:30:38,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:30:38,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804394810] [2021-11-12 22:30:38,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:38,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:30:38,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:38,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:30:38,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:30:38,536 INFO L87 Difference]: Start difference. First operand 36462 states and 50559 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-12 22:30:40,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:40,689 INFO L93 Difference]: Finished difference Result 36468 states and 50564 transitions. [2021-11-12 22:30:40,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:30:40,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 181 [2021-11-12 22:30:40,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:40,855 INFO L225 Difference]: With dead ends: 36468 [2021-11-12 22:30:40,855 INFO L226 Difference]: Without dead ends: 36466 [2021-11-12 22:30:40,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 355 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 22:30:40,872 INFO L933 BasicCegarLoop]: 1772 mSDtfsCounter, 1713 mSDsluCounter, 3525 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.28ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.51ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:40,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1720 Valid, 5297 Invalid, 20 Unknown, 0 Unchecked, 10.28ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 48.51ms Time] [2021-11-12 22:30:40,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36466 states. [2021-11-12 22:30:43,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36466 to 36466. [2021-11-12 22:30:43,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36466 states, 24895 states have (on average 1.260253062864029) internal successors, (31374), 25775 states have internal predecessors, (31374), 9452 states have call successors, (9452), 2525 states have call predecessors, (9452), 2116 states have return successors, (9736), 8345 states have call predecessors, (9736), 9448 states have call successors, (9736) [2021-11-12 22:30:43,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36466 states to 36466 states and 50562 transitions. [2021-11-12 22:30:43,882 INFO L78 Accepts]: Start accepts. Automaton has 36466 states and 50562 transitions. Word has length 181 [2021-11-12 22:30:43,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:43,883 INFO L470 AbstractCegarLoop]: Abstraction has 36466 states and 50562 transitions. [2021-11-12 22:30:43,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-12 22:30:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 36466 states and 50562 transitions. [2021-11-12 22:30:43,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-12 22:30:43,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:43,891 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 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] [2021-11-12 22:30:43,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:44,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:44,117 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 22:30:44,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:44,118 INFO L85 PathProgramCache]: Analyzing trace with hash -128454877, now seen corresponding path program 1 times [2021-11-12 22:30:44,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:44,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718007502] [2021-11-12 22:30:44,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:44,121 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:44,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:44,122 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:44,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:30:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:47,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:30:47,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2021-11-12 22:30:48,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2021-11-12 22:30:49,449 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:49,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718007502] [2021-11-12 22:30:49,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718007502] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:30:49,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:30:49,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:30:49,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566441218] [2021-11-12 22:30:49,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:49,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:30:49,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:49,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:30:49,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:30:49,452 INFO L87 Difference]: Start difference. First operand 36466 states and 50562 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 22:30:51,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:51,926 INFO L93 Difference]: Finished difference Result 36472 states and 50567 transitions. [2021-11-12 22:30:51,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:30:51,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 186 [2021-11-12 22:30:51,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:52,076 INFO L225 Difference]: With dead ends: 36472 [2021-11-12 22:30:52,076 INFO L226 Difference]: Without dead ends: 36470 [2021-11-12 22:30:52,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 365 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 22:30:52,094 INFO L933 BasicCegarLoop]: 1772 mSDtfsCounter, 1713 mSDsluCounter, 3525 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.94ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.65ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:52,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 5297 Invalid, 20 Unknown, 0 Unchecked, 10.94ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 50.65ms Time] [2021-11-12 22:30:52,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36470 states. [2021-11-12 22:30:54,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36470 to 36470. [2021-11-12 22:30:54,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36470 states, 24898 states have (on average 1.2602217045545827) internal successors, (31377), 25778 states have internal predecessors, (31377), 9452 states have call successors, (9452), 2526 states have call predecessors, (9452), 2117 states have return successors, (9736), 8345 states have call predecessors, (9736), 9448 states have call successors, (9736) [2021-11-12 22:30:55,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36470 states to 36470 states and 50565 transitions. [2021-11-12 22:30:55,017 INFO L78 Accepts]: Start accepts. Automaton has 36470 states and 50565 transitions. Word has length 186 [2021-11-12 22:30:55,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:55,018 INFO L470 AbstractCegarLoop]: Abstraction has 36470 states and 50565 transitions. [2021-11-12 22:30:55,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 22:30:55,019 INFO L276 IsEmpty]: Start isEmpty. Operand 36470 states and 50565 transitions. [2021-11-12 22:30:55,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-12 22:30:55,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:55,027 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 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] [2021-11-12 22:30:55,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:55,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:55,236 INFO L402 AbstractCegarLoop]: === Iteration 12 === 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 22:30:55,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:55,236 INFO L85 PathProgramCache]: Analyzing trace with hash 998798889, now seen corresponding path program 1 times [2021-11-12 22:30:55,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:55,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145215448] [2021-11-12 22:30:55,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:55,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:55,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:55,241 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:55,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:30:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:58,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 2597 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:30:58,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:31:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2021-11-12 22:31:00,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:31:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2021-11-12 22:31:00,796 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:31:00,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145215448] [2021-11-12 22:31:00,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145215448] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:31:00,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:31:00,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:31:00,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844158940] [2021-11-12 22:31:00,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:00,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:31:00,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:31:00,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:31:00,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:31:00,799 INFO L87 Difference]: Start difference. First operand 36470 states and 50565 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-12 22:31:03,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:03,704 INFO L93 Difference]: Finished difference Result 36476 states and 50570 transitions. [2021-11-12 22:31:03,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:31:03,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 191 [2021-11-12 22:31:03,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:03,843 INFO L225 Difference]: With dead ends: 36476 [2021-11-12 22:31:03,843 INFO L226 Difference]: Without dead ends: 36474 [2021-11-12 22:31:03,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 375 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 22:31:03,858 INFO L933 BasicCegarLoop]: 1772 mSDtfsCounter, 1713 mSDsluCounter, 3525 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.74ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.37ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:03,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1718 Valid, 5297 Invalid, 20 Unknown, 0 Unchecked, 13.74ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 69.37ms Time] [2021-11-12 22:31:03,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36474 states. [2021-11-12 22:31:06,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36474 to 36474. [2021-11-12 22:31:06,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36474 states, 24901 states have (on average 1.2601903538010522) internal successors, (31380), 25781 states have internal predecessors, (31380), 9452 states have call successors, (9452), 2527 states have call predecessors, (9452), 2118 states have return successors, (9736), 8345 states have call predecessors, (9736), 9448 states have call successors, (9736) [2021-11-12 22:31:07,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36474 states to 36474 states and 50568 transitions. [2021-11-12 22:31:07,036 INFO L78 Accepts]: Start accepts. Automaton has 36474 states and 50568 transitions. Word has length 191 [2021-11-12 22:31:07,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:07,037 INFO L470 AbstractCegarLoop]: Abstraction has 36474 states and 50568 transitions. [2021-11-12 22:31:07,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-12 22:31:07,038 INFO L276 IsEmpty]: Start isEmpty. Operand 36474 states and 50568 transitions. [2021-11-12 22:31:07,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-12 22:31:07,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:07,046 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 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 22:31:07,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:31:07,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:31:07,261 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 22:31:07,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:07,262 INFO L85 PathProgramCache]: Analyzing trace with hash 838501273, now seen corresponding path program 1 times [2021-11-12 22:31:07,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:31:07,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589165100] [2021-11-12 22:31:07,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:07,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:31:07,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:31:07,269 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:31:07,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 22:31:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:10,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 2661 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:31:10,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:31:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2021-11-12 22:31:11,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:31:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2021-11-12 22:31:11,922 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:31:11,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589165100] [2021-11-12 22:31:11,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589165100] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:11,923 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:11,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:31:11,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934945650] [2021-11-12 22:31:11,924 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:11,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:31:11,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:31:11,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:31:11,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:31:11,926 INFO L87 Difference]: Start difference. First operand 36474 states and 50568 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-12 22:31:14,296 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:31:21,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:21,041 INFO L93 Difference]: Finished difference Result 81699 states and 113265 transitions. [2021-11-12 22:31:21,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:31:21,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 210 [2021-11-12 22:31:21,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:21,218 INFO L225 Difference]: With dead ends: 81699 [2021-11-12 22:31:21,219 INFO L226 Difference]: Without dead ends: 45328 [2021-11-12 22:31:21,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 416 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 22:31:21,315 INFO L933 BasicCegarLoop]: 3744 mSDtfsCounter, 3415 mSDsluCounter, 3048 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5104.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3415 SdHoareTripleChecker+Valid, 6792 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.85ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5530.28ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:21,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3415 Valid, 6792 Invalid, 761 Unknown, 0 Unchecked, 22.85ms Time], IncrementalHoareTripleChecker [11 Valid, 749 Invalid, 1 Unknown, 0 Unchecked, 5530.28ms Time] [2021-11-12 22:31:21,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45328 states. [2021-11-12 22:31:25,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45328 to 45228. [2021-11-12 22:31:25,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45228 states, 30875 states have (on average 1.2565182186234818) internal successors, (38795), 31958 states have internal predecessors, (38795), 11722 states have call successors, (11722), 3133 states have call predecessors, (11722), 2628 states have return successors, (12078), 10361 states have call predecessors, (12078), 11718 states have call successors, (12078) [2021-11-12 22:31:25,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45228 states to 45228 states and 62595 transitions. [2021-11-12 22:31:25,362 INFO L78 Accepts]: Start accepts. Automaton has 45228 states and 62595 transitions. Word has length 210 [2021-11-12 22:31:25,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:25,363 INFO L470 AbstractCegarLoop]: Abstraction has 45228 states and 62595 transitions. [2021-11-12 22:31:25,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-12 22:31:25,363 INFO L276 IsEmpty]: Start isEmpty. Operand 45228 states and 62595 transitions. [2021-11-12 22:31:25,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-12 22:31:25,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:25,370 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 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] [2021-11-12 22:31:25,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-12 22:31:25,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:31:25,573 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 22:31:25,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:25,574 INFO L85 PathProgramCache]: Analyzing trace with hash -554796381, now seen corresponding path program 1 times [2021-11-12 22:31:25,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:31:25,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455545738] [2021-11-12 22:31:25,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:25,577 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:31:25,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:31:25,578 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:31:25,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288ea883-af4e-42cc-901a-3255d597102e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 22:31:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:28,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 2604 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:31:28,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:31:30,231 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2021-11-12 22:31:30,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:31:31,005 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2021-11-12 22:31:31,005 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:31:31,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455545738] [2021-11-12 22:31:31,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455545738] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:31:31,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:31:31,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:31:31,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745275641] [2021-11-12 22:31:31,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:31,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:31:31,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:31:31,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:31:31,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:31:31,008 INFO L87 Difference]: Start difference. First operand 45228 states and 62595 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23)