./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-wireless-adm8211.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs --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 265e49c3377c52c97dc3fc0a083b7daee63958176975b73f1e1d54651892cb04 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:00:05,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:00:05,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:00:05,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:00:05,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:00:05,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:00:05,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:00:05,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:00:05,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:00:05,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:00:05,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:00:05,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:00:05,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:00:05,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:00:05,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:00:05,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:00:05,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:00:05,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:00:05,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:00:05,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:00:05,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:00:05,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:00:05,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:00:05,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:00:05,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:00:05,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:00:05,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:00:05,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:00:05,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:00:05,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:00:05,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:00:05,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:00:05,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:00:05,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:00:05,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:00:05,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:00:05,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:00:05,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:00:05,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:00:05,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:00:05,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:00:05,979 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 15:00:06,036 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:00:06,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:00:06,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:00:06,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:00:06,037 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:00:06,037 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:00:06,038 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:00:06,038 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:00:06,038 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:00:06,038 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:00:06,038 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:00:06,038 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:00:06,039 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:00:06,039 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:00:06,039 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:00:06,039 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:00:06,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:00:06,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:00:06,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:00:06,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:00:06,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:00:06,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:00:06,041 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:00:06,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:00:06,041 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:00:06,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:00:06,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:00:06,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:00:06,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:00:06,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:00:06,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:00:06,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:00:06,050 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:00:06,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:00:06,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:00:06,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:00:06,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:00:06,052 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265e49c3377c52c97dc3fc0a083b7daee63958176975b73f1e1d54651892cb04 [2021-11-19 15:00:06,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:00:06,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:00:06,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:00:06,348 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:00:06,349 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:00:06,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2021-11-19 15:00:06,432 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/data/e80c575b4/0b1e3afd86a744608090b24226eb0151/FLAGfc21e8962 [2021-11-19 15:00:07,394 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:00:07,394 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2021-11-19 15:00:07,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/data/e80c575b4/0b1e3afd86a744608090b24226eb0151/FLAGfc21e8962 [2021-11-19 15:00:07,842 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/data/e80c575b4/0b1e3afd86a744608090b24226eb0151 [2021-11-19 15:00:07,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:00:07,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:00:07,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:00:07,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:00:07,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:00:07,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:00:07" (1/1) ... [2021-11-19 15:00:07,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e73d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:07, skipping insertion in model container [2021-11-19 15:00:07,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:00:07" (1/1) ... [2021-11-19 15:00:07,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:00:08,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:00:09,619 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 15:00:10,155 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 15:00:10,157 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 15:00:10,239 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 15:00:11,319 WARN L230 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[372884,372897] [2021-11-19 15:00:11,329 WARN L230 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373053,373066] [2021-11-19 15:00:11,330 WARN L230 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373220,373233] [2021-11-19 15:00:11,331 WARN L230 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373388,373401] [2021-11-19 15:00:11,351 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:00:11,398 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) [2021-11-19 15:00:11,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@61190ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:11, skipping insertion in model container [2021-11-19 15:00:11,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:00:11,400 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:00:11,402 INFO L158 Benchmark]: Toolchain (without parser) took 3554.28ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 87.5MB in the beginning and 97.2MB in the end (delta: -9.8MB). Peak memory consumption was 64.8MB. Max. memory is 16.1GB. [2021-11-19 15:00:11,402 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 121.6MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:00:11,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3539.07ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 87.5MB in the beginning and 97.2MB in the end (delta: -9.8MB). Peak memory consumption was 64.8MB. Max. memory is 16.1GB. [2021-11-19 15:00:11,406 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 121.6MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3539.07ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 87.5MB in the beginning and 97.2MB in the end (delta: -9.8MB). Peak memory consumption was 64.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7038]: 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs --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 265e49c3377c52c97dc3fc0a083b7daee63958176975b73f1e1d54651892cb04 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:00:13,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:00:13,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:00:13,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:00:13,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:00:13,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:00:13,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:00:13,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:00:13,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:00:13,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:00:13,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:00:13,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:00:13,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:00:13,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:00:13,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:00:13,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:00:13,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:00:13,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:00:13,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:00:13,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:00:13,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:00:13,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:00:13,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:00:13,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:00:13,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:00:13,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:00:13,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:00:13,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:00:13,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:00:13,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:00:13,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:00:13,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:00:13,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:00:13,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:00:13,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:00:13,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:00:13,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:00:13,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:00:13,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:00:13,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:00:13,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:00:13,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 15:00:13,673 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:00:13,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:00:13,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:00:13,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:00:13,676 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:00:13,676 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:00:13,676 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:00:13,677 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:00:13,677 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:00:13,677 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:00:13,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:00:13,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:00:13,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:00:13,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:00:13,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:00:13,681 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:00:13,681 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:00:13,682 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:00:13,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:00:13,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:00:13,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:00:13,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:00:13,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:00:13,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:00:13,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:00:13,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:00:13,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:00:13,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:00:13,685 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:00:13,685 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:00:13,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:00:13,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:00:13,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:00:13,686 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265e49c3377c52c97dc3fc0a083b7daee63958176975b73f1e1d54651892cb04 [2021-11-19 15:00:14,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:00:14,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:00:14,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:00:14,090 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:00:14,091 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:00:14,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2021-11-19 15:00:14,162 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/data/6af5773b2/605f6f44e7164f67849a065204a45fe2/FLAG3cc67d524 [2021-11-19 15:00:15,146 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:00:15,146 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2021-11-19 15:00:15,229 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/data/6af5773b2/605f6f44e7164f67849a065204a45fe2/FLAG3cc67d524 [2021-11-19 15:00:15,496 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/data/6af5773b2/605f6f44e7164f67849a065204a45fe2 [2021-11-19 15:00:15,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:00:15,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:00:15,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:00:15,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:00:15,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:00:15,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:00:15" (1/1) ... [2021-11-19 15:00:15,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c215e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:15, skipping insertion in model container [2021-11-19 15:00:15,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:00:15" (1/1) ... [2021-11-19 15:00:15,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:00:15,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:00:18,912 WARN L230 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[372884,372897] [2021-11-19 15:00:18,916 WARN L230 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373053,373066] [2021-11-19 15:00:18,917 WARN L230 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373220,373233] [2021-11-19 15:00:18,917 WARN L230 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373388,373401] [2021-11-19 15:00:18,946 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:00:19,023 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:00:19,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:00:19,544 WARN L230 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[372884,372897] [2021-11-19 15:00:19,545 WARN L230 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373053,373066] [2021-11-19 15:00:19,546 WARN L230 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373220,373233] [2021-11-19 15:00:19,546 WARN L230 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373388,373401] [2021-11-19 15:00:19,553 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:00:19,588 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:00:20,060 WARN L230 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[372884,372897] [2021-11-19 15:00:20,061 WARN L230 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373053,373066] [2021-11-19 15:00:20,061 WARN L230 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373220,373233] [2021-11-19 15:00:20,061 WARN L230 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_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373388,373401] [2021-11-19 15:00:20,073 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:00:20,261 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:00:20,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20 WrapperNode [2021-11-19 15:00:20,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:00:20,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:00:20,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:00:20,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:00:20,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:20,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:20,598 INFO L137 Inliner]: procedures = 426, calls = 2777, calls flagged for inlining = 214, calls inlined = 198, statements flattened = 5857 [2021-11-19 15:00:20,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:00:20,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:00:20,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:00:20,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:00:20,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:20,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:20,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:20,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:20,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:20,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:20,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:21,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:00:21,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:00:21,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:00:21,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:00:21,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:21,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:00:21,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:00:21,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:00:21,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:00:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_set_bssid [2021-11-19 15:00:21,125 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_set_bssid [2021-11-19 15:00:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_start [2021-11-19 15:00:21,126 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_start [2021-11-19 15:00:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-19 15:00:21,126 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-19 15:00:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 15:00:21,126 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 15:00:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 15:00:21,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 15:00:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 15:00:21,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 15:00:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 15:00:21,127 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 15:00:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-19 15:00:21,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-19 15:00:21,128 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-19 15:00:21,128 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-19 15:00:21,128 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_al2210l [2021-11-19 15:00:21,128 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_al2210l [2021-11-19 15:00:21,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 15:00:21,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 15:00:21,129 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-19 15:00:21,129 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-19 15:00:21,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 15:00:21,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 15:00:21,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_adm8211_priv [2021-11-19 15:00:21,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_adm8211_priv [2021-11-19 15:00:21,130 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-19 15:00:21,130 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-19 15:00:21,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:00:21,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 15:00:21,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:00:21,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 15:00:21,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 15:00:21,131 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-19 15:00:21,132 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-19 15:00:21,132 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_set_channel [2021-11-19 15:00:21,132 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_set_channel [2021-11-19 15:00:21,132 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 15:00:21,133 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 15:00:21,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 15:00:21,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 15:00:21,135 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_write_sram [2021-11-19 15:00:21,135 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_write_sram [2021-11-19 15:00:21,136 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 15:00:21,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 15:00:21,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 15:00:21,136 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 15:00:21,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 15:00:21,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 15:00:21,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 15:00:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 15:00:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-19 15:00:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-19 15:00:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-19 15:00:21,139 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-19 15:00:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-19 15:00:21,139 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-19 15:00:21,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 15:00:21,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 15:00:21,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:00:21,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 15:00:21,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 15:00:21,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 15:00:21,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 15:00:21,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:00:21,142 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2021-11-19 15:00:21,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2021-11-19 15:00:21,142 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_max2820 [2021-11-19 15:00:21,142 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_max2820 [2021-11-19 15:00:21,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 15:00:21,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 15:00:21,143 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_write_bbp [2021-11-19 15:00:21,143 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_write_bbp [2021-11-19 15:00:21,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:00:21,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 15:00:21,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 15:00:21,144 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 15:00:21,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 15:00:21,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 15:00:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 15:00:21,146 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 15:00:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-19 15:00:21,146 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-19 15:00:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_stop [2021-11-19 15:00:21,146 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_stop [2021-11-19 15:00:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 15:00:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-19 15:00:21,147 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-19 15:00:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:00:21,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:00:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:00:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-19 15:00:21,148 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-19 15:00:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 15:00:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 15:00:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 15:00:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 15:00:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 15:00:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 15:00:21,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 15:00:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-11-19 15:00:21,150 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-11-19 15:00:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 15:00:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 15:00:21,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ieee80211_free_hw [2021-11-19 15:00:21,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ieee80211_free_hw [2021-11-19 15:00:21,154 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-19 15:00:21,154 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-19 15:00:21,155 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-19 15:00:21,155 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-19 15:00:21,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 15:00:21,163 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 15:00:21,164 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-19 15:00:21,164 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-19 15:00:21,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:00:21,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:00:21,164 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_resume [2021-11-19 15:00:21,165 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_resume [2021-11-19 15:00:21,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 15:00:21,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 15:00:21,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 15:00:21,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 15:00:21,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 15:00:21,166 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-19 15:00:21,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-19 15:00:21,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 15:00:21,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 15:00:21,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_adm8211_priv [2021-11-19 15:00:21,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_adm8211_priv [2021-11-19 15:00:21,166 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_remove [2021-11-19 15:00:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_remove [2021-11-19 15:00:21,167 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 15:00:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 15:00:21,167 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_update_mode [2021-11-19 15:00:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_update_mode [2021-11-19 15:00:21,167 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 15:00:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 15:00:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-19 15:00:21,168 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-19 15:00:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 15:00:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 15:00:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 15:00:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 15:00:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-19 15:00:21,169 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-19 15:00:21,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 15:00:21,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 15:00:21,169 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_rfmd2958 [2021-11-19 15:00:21,169 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_rfmd2958 [2021-11-19 15:00:21,169 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_rfmd2948 [2021-11-19 15:00:21,169 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_rfmd2948 [2021-11-19 15:00:21,170 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-11-19 15:00:21,170 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-11-19 15:00:21,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 15:00:21,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 15:00:21,170 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-19 15:00:21,170 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-19 15:00:21,170 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-19 15:00:21,171 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-19 15:00:21,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 15:00:21,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 15:00:21,171 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-11-19 15:00:21,171 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-11-19 15:00:22,183 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:00:22,189 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:00:29,280 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 15:01:08,067 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 15:01:08,155 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:01:08,176 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:01:08,177 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 15:01:08,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:01:08 BoogieIcfgContainer [2021-11-19 15:01:08,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:01:08,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:01:08,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:01:08,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:01:08,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:00:15" (1/3) ... [2021-11-19 15:01:08,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c321ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:01:08, skipping insertion in model container [2021-11-19 15:01:08,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (2/3) ... [2021-11-19 15:01:08,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c321ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:01:08, skipping insertion in model container [2021-11-19 15:01:08,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:01:08" (3/3) ... [2021-11-19 15:01:08,195 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2021-11-19 15:01:08,210 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:01:08,214 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 15:01:08,287 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:01:08,299 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 [2021-11-19 15:01:08,299 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 15:01:08,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 2089 states, 1414 states have (on average 1.2595473833097595) internal successors, (1781), 1434 states have internal predecessors, (1781), 606 states have call successors, (606), 67 states have call predecessors, (606), 66 states have return successors, (601), 597 states have call predecessors, (601), 601 states have call successors, (601) [2021-11-19 15:01:08,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-19 15:01:08,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:08,380 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:08,381 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)] === [2021-11-19 15:01:08,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:08,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1569374642, now seen corresponding path program 1 times [2021-11-19 15:01:08,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:08,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308634728] [2021-11-19 15:01:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:08,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:08,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:08,408 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:08,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:01:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:10,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 1946 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:01:10,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:10,937 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2021-11-19 15:01:10,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-19 15:01:11,481 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:11,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308634728] [2021-11-19 15:01:11,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308634728] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:11,482 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:01:11,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:01:11,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630713406] [2021-11-19 15:01:11,487 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:11,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:01:11,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:11,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:01:11,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:01:11,547 INFO L87 Difference]: Start difference. First operand has 2089 states, 1414 states have (on average 1.2595473833097595) internal successors, (1781), 1434 states have internal predecessors, (1781), 606 states have call successors, (606), 67 states have call predecessors, (606), 66 states have return successors, (601), 597 states have call predecessors, (601), 601 states have call successors, (601) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 15:01:13,809 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 [] [2021-11-19 15:01:27,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:27,657 INFO L93 Difference]: Finished difference Result 8161 states and 11783 transitions. [2021-11-19 15:01:27,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:01:27,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 134 [2021-11-19 15:01:27,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:27,744 INFO L225 Difference]: With dead ends: 8161 [2021-11-19 15:01:27,744 INFO L226 Difference]: Without dead ends: 6080 [2021-11-19 15:01:27,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:01:27,778 INFO L933 BasicCegarLoop]: 4152 mSDtfsCounter, 7509 mSDsluCounter, 4622 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 1151 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7509 SdHoareTripleChecker+Valid, 8774 SdHoareTripleChecker+Invalid, 2355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1151 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:27,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7509 Valid, 8774 Invalid, 2355 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1151 Valid, 1203 Invalid, 1 Unknown, 0 Unchecked, 15.4s Time] [2021-11-19 15:01:27,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6080 states. [2021-11-19 15:01:28,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6080 to 6054. [2021-11-19 15:01:28,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6054 states, 4125 states have (on average 1.254060606060606) internal successors, (5173), 4180 states have internal predecessors, (5173), 1733 states have call successors, (1733), 194 states have call predecessors, (1733), 193 states have return successors, (1730), 1718 states have call predecessors, (1730), 1730 states have call successors, (1730) [2021-11-19 15:01:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6054 states to 6054 states and 8636 transitions. [2021-11-19 15:01:28,487 INFO L78 Accepts]: Start accepts. Automaton has 6054 states and 8636 transitions. Word has length 134 [2021-11-19 15:01:28,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:28,488 INFO L470 AbstractCegarLoop]: Abstraction has 6054 states and 8636 transitions. [2021-11-19 15:01:28,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 15:01:28,489 INFO L276 IsEmpty]: Start isEmpty. Operand 6054 states and 8636 transitions. [2021-11-19 15:01:28,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-19 15:01:28,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:28,496 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:28,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:28,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:28,710 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)] === [2021-11-19 15:01:28,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:28,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2046920627, now seen corresponding path program 1 times [2021-11-19 15:01:28,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:28,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776719824] [2021-11-19 15:01:28,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:28,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:28,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:28,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:28,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:01:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:30,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 2003 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:01:30,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2021-11-19 15:01:31,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-19 15:01:31,672 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:31,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776719824] [2021-11-19 15:01:31,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776719824] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:31,672 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:01:31,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:01:31,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254443191] [2021-11-19 15:01:31,673 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:31,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:01:31,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:31,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:01:31,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:01:31,676 INFO L87 Difference]: Start difference. First operand 6054 states and 8636 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-19 15:01:33,813 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:01:44,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:44,935 INFO L93 Difference]: Finished difference Result 22635 states and 32348 transitions. [2021-11-19 15:01:44,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:01:44,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 148 [2021-11-19 15:01:44,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:45,142 INFO L225 Difference]: With dead ends: 22635 [2021-11-19 15:01:45,142 INFO L226 Difference]: Without dead ends: 16606 [2021-11-19 15:01:45,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:01:45,205 INFO L933 BasicCegarLoop]: 4047 mSDtfsCounter, 5164 mSDsluCounter, 7182 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5164 SdHoareTripleChecker+Valid, 11229 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:45,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5164 Valid, 11229 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1095 Invalid, 1 Unknown, 0 Unchecked, 12.4s Time] [2021-11-19 15:01:45,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16606 states. [2021-11-19 15:01:46,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16606 to 16532. [2021-11-19 15:01:46,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16532 states, 11155 states have (on average 1.252084267144778) internal successors, (13967), 11328 states have internal predecessors, (13967), 4824 states have call successors, (4824), 557 states have call predecessors, (4824), 550 states have return successors, (4851), 4763 states have call predecessors, (4851), 4821 states have call successors, (4851) [2021-11-19 15:01:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16532 states to 16532 states and 23642 transitions. [2021-11-19 15:01:46,821 INFO L78 Accepts]: Start accepts. Automaton has 16532 states and 23642 transitions. Word has length 148 [2021-11-19 15:01:46,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:46,824 INFO L470 AbstractCegarLoop]: Abstraction has 16532 states and 23642 transitions. [2021-11-19 15:01:46,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-19 15:01:46,825 INFO L276 IsEmpty]: Start isEmpty. Operand 16532 states and 23642 transitions. [2021-11-19 15:01:46,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-19 15:01:46,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:46,836 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:46,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:47,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:47,051 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 15:01:47,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:47,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1334242306, now seen corresponding path program 1 times [2021-11-19 15:01:47,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:47,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014453603] [2021-11-19 15:01:47,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:47,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:47,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:47,055 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:47,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:01:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:48,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 2067 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:01:48,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2021-11-19 15:01:51,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:52,991 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2021-11-19 15:01:52,991 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:52,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014453603] [2021-11-19 15:01:52,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014453603] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:52,992 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:01:52,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-19 15:01:52,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405246556] [2021-11-19 15:01:52,993 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:52,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:01:52,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:52,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:01:52,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:01:52,995 INFO L87 Difference]: Start difference. First operand 16532 states and 23642 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (41), 4 states have call predecessors, (41), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-19 15:01:54,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:54,140 INFO L93 Difference]: Finished difference Result 16538 states and 23647 transitions. [2021-11-19 15:01:54,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:01:54,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (41), 4 states have call predecessors, (41), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 186 [2021-11-19 15:01:54,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:54,260 INFO L225 Difference]: With dead ends: 16538 [2021-11-19 15:01:54,261 INFO L226 Difference]: Without dead ends: 16536 [2021-11-19 15:01:54,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:01:54,285 INFO L933 BasicCegarLoop]: 2956 mSDtfsCounter, 2872 mSDsluCounter, 8845 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2883 SdHoareTripleChecker+Valid, 11801 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:54,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2883 Valid, 11801 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:01:54,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16536 states. [2021-11-19 15:01:55,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16536 to 16536. [2021-11-19 15:01:55,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16536 states, 11158 states have (on average 1.2520164904104678) internal successors, (13970), 11331 states have internal predecessors, (13970), 4824 states have call successors, (4824), 558 states have call predecessors, (4824), 551 states have return successors, (4851), 4763 states have call predecessors, (4851), 4821 states have call successors, (4851) [2021-11-19 15:01:55,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16536 states to 16536 states and 23645 transitions. [2021-11-19 15:01:55,749 INFO L78 Accepts]: Start accepts. Automaton has 16536 states and 23645 transitions. Word has length 186 [2021-11-19 15:01:55,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:55,750 INFO L470 AbstractCegarLoop]: Abstraction has 16536 states and 23645 transitions. [2021-11-19 15:01:55,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (41), 4 states have call predecessors, (41), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-19 15:01:55,751 INFO L276 IsEmpty]: Start isEmpty. Operand 16536 states and 23645 transitions. [2021-11-19 15:01:55,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-19 15:01:55,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:55,759 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:55,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:55,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:55,975 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 15:01:55,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:55,976 INFO L85 PathProgramCache]: Analyzing trace with hash 446815370, now seen corresponding path program 1 times [2021-11-19 15:01:55,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:55,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444692244] [2021-11-19 15:01:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:55,978 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:55,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:55,979 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:55,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:01:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:57,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 2074 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:01:57,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2021-11-19 15:02:00,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:01,769 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2021-11-19 15:02:01,770 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:01,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444692244] [2021-11-19 15:02:01,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444692244] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:02:01,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:02:01,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 15:02:01,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753714226] [2021-11-19 15:02:01,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:01,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:02:01,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:01,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:02:01,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:02:01,772 INFO L87 Difference]: Start difference. First operand 16536 states and 23645 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-19 15:02:02,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:02,843 INFO L93 Difference]: Finished difference Result 16542 states and 23650 transitions. [2021-11-19 15:02:02,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:02:02,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 191 [2021-11-19 15:02:02,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:02,932 INFO L225 Difference]: With dead ends: 16542 [2021-11-19 15:02:02,932 INFO L226 Difference]: Without dead ends: 16540 [2021-11-19 15:02:02,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:02:02,945 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 2898 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2908 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:02,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2908 Valid, 8858 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:02:02,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16540 states. [2021-11-19 15:02:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16540 to 16540. [2021-11-19 15:02:04,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16540 states, 11161 states have (on average 1.251948750111997) internal successors, (13973), 11334 states have internal predecessors, (13973), 4824 states have call successors, (4824), 559 states have call predecessors, (4824), 552 states have return successors, (4851), 4763 states have call predecessors, (4851), 4821 states have call successors, (4851) [2021-11-19 15:02:04,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16540 states to 16540 states and 23648 transitions. [2021-11-19 15:02:04,341 INFO L78 Accepts]: Start accepts. Automaton has 16540 states and 23648 transitions. Word has length 191 [2021-11-19 15:02:04,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:04,342 INFO L470 AbstractCegarLoop]: Abstraction has 16540 states and 23648 transitions. [2021-11-19 15:02:04,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-19 15:02:04,342 INFO L276 IsEmpty]: Start isEmpty. Operand 16540 states and 23648 transitions. [2021-11-19 15:02:04,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-19 15:02:04,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:04,352 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:04,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:04,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:04,574 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)] === [2021-11-19 15:02:04,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1559422782, now seen corresponding path program 1 times [2021-11-19 15:02:04,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:04,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495987620] [2021-11-19 15:02:04,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:04,577 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:04,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:04,579 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:04,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:02:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:06,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 2081 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:02:06,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-11-19 15:02:09,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:10,670 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-11-19 15:02:10,670 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:10,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495987620] [2021-11-19 15:02:10,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495987620] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:02:10,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:02:10,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 15:02:10,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120838829] [2021-11-19 15:02:10,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:10,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:02:10,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:10,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:02:10,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:02:10,673 INFO L87 Difference]: Start difference. First operand 16540 states and 23648 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-19 15:02:11,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:11,765 INFO L93 Difference]: Finished difference Result 16546 states and 23653 transitions. [2021-11-19 15:02:11,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:02:11,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 196 [2021-11-19 15:02:11,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:11,862 INFO L225 Difference]: With dead ends: 16546 [2021-11-19 15:02:11,862 INFO L226 Difference]: Without dead ends: 16544 [2021-11-19 15:02:11,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:02:11,879 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 2898 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2907 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:11,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2907 Valid, 8858 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:02:11,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16544 states. [2021-11-19 15:02:13,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16544 to 16544. [2021-11-19 15:02:13,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16544 states, 11164 states have (on average 1.2518810462199927) internal successors, (13976), 11337 states have internal predecessors, (13976), 4824 states have call successors, (4824), 560 states have call predecessors, (4824), 553 states have return successors, (4851), 4763 states have call predecessors, (4851), 4821 states have call successors, (4851) [2021-11-19 15:02:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16544 states to 16544 states and 23651 transitions. [2021-11-19 15:02:13,735 INFO L78 Accepts]: Start accepts. Automaton has 16544 states and 23651 transitions. Word has length 196 [2021-11-19 15:02:13,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:13,736 INFO L470 AbstractCegarLoop]: Abstraction has 16544 states and 23651 transitions. [2021-11-19 15:02:13,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-19 15:02:13,737 INFO L276 IsEmpty]: Start isEmpty. Operand 16544 states and 23651 transitions. [2021-11-19 15:02:13,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-19 15:02:13,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:13,746 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:13,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:13,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:13,962 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)] === [2021-11-19 15:02:13,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:13,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1744033610, now seen corresponding path program 1 times [2021-11-19 15:02:13,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:13,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737205988] [2021-11-19 15:02:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:13,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:13,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:13,968 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:13,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:02:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:15,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 2088 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:02:15,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2021-11-19 15:02:18,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2021-11-19 15:02:20,206 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:20,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737205988] [2021-11-19 15:02:20,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737205988] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:02:20,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:02:20,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 15:02:20,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579092554] [2021-11-19 15:02:20,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:20,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:02:20,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:20,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:02:20,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:02:20,211 INFO L87 Difference]: Start difference. First operand 16544 states and 23651 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-19 15:02:21,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:21,143 INFO L93 Difference]: Finished difference Result 16550 states and 23656 transitions. [2021-11-19 15:02:21,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:02:21,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 201 [2021-11-19 15:02:21,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:21,248 INFO L225 Difference]: With dead ends: 16550 [2021-11-19 15:02:21,248 INFO L226 Difference]: Without dead ends: 16548 [2021-11-19 15:02:21,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:02:21,260 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 2898 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2906 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:21,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2906 Valid, 8858 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:02:21,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16548 states. [2021-11-19 15:02:22,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16548 to 16548. [2021-11-19 15:02:22,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16548 states, 11167 states have (on average 1.2518133787051133) internal successors, (13979), 11340 states have internal predecessors, (13979), 4824 states have call successors, (4824), 561 states have call predecessors, (4824), 554 states have return successors, (4851), 4763 states have call predecessors, (4851), 4821 states have call successors, (4851) [2021-11-19 15:02:22,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16548 states to 16548 states and 23654 transitions. [2021-11-19 15:02:22,701 INFO L78 Accepts]: Start accepts. Automaton has 16548 states and 23654 transitions. Word has length 201 [2021-11-19 15:02:22,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:22,702 INFO L470 AbstractCegarLoop]: Abstraction has 16548 states and 23654 transitions. [2021-11-19 15:02:22,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-19 15:02:22,703 INFO L276 IsEmpty]: Start isEmpty. Operand 16548 states and 23654 transitions. [2021-11-19 15:02:22,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-19 15:02:22,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:22,713 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:22,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:22,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:22,926 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)] === [2021-11-19 15:02:22,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:22,927 INFO L85 PathProgramCache]: Analyzing trace with hash -473692798, now seen corresponding path program 1 times [2021-11-19 15:02:22,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:22,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47341729] [2021-11-19 15:02:22,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:22,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:22,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:22,931 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:22,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:02:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:24,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 2095 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:02:24,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2021-11-19 15:02:27,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2021-11-19 15:02:29,059 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:29,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47341729] [2021-11-19 15:02:29,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47341729] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:02:29,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:02:29,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 15:02:29,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393420440] [2021-11-19 15:02:29,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:29,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:02:29,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:29,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:02:29,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:02:29,063 INFO L87 Difference]: Start difference. First operand 16548 states and 23654 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-19 15:02:29,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:29,999 INFO L93 Difference]: Finished difference Result 16554 states and 23659 transitions. [2021-11-19 15:02:30,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:02:30,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) Word has length 206 [2021-11-19 15:02:30,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:30,089 INFO L225 Difference]: With dead ends: 16554 [2021-11-19 15:02:30,090 INFO L226 Difference]: Without dead ends: 16552 [2021-11-19 15:02:30,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:02:30,102 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 2898 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2905 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:30,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2905 Valid, 8858 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:02:30,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16552 states. [2021-11-19 15:02:31,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16552 to 16552. [2021-11-19 15:02:31,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16552 states, 11170 states have (on average 1.2517457475380482) internal successors, (13982), 11343 states have internal predecessors, (13982), 4824 states have call successors, (4824), 562 states have call predecessors, (4824), 555 states have return successors, (4851), 4763 states have call predecessors, (4851), 4821 states have call successors, (4851) [2021-11-19 15:02:31,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16552 states to 16552 states and 23657 transitions. [2021-11-19 15:02:31,341 INFO L78 Accepts]: Start accepts. Automaton has 16552 states and 23657 transitions. Word has length 206 [2021-11-19 15:02:31,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:31,342 INFO L470 AbstractCegarLoop]: Abstraction has 16552 states and 23657 transitions. [2021-11-19 15:02:31,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-19 15:02:31,343 INFO L276 IsEmpty]: Start isEmpty. Operand 16552 states and 23657 transitions. [2021-11-19 15:02:31,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-19 15:02:31,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:31,355 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 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] [2021-11-19 15:02:31,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:31,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:31,575 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)] === [2021-11-19 15:02:31,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:31,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1875143985, now seen corresponding path program 1 times [2021-11-19 15:02:31,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:31,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028088151] [2021-11-19 15:02:31,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:31,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:31,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:31,580 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:31,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:02:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:33,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 2151 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 15:02:33,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:36,117 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 124 proven. 3 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2021-11-19 15:02:36,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:38,965 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2021-11-19 15:02:38,966 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:38,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028088151] [2021-11-19 15:02:38,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028088151] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:02:38,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [626916938] [2021-11-19 15:02:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:38,967 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:02:38,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:02:38,969 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:02:38,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 15:02:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:40,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 2151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:02:40,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:44,268 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2021-11-19 15:02:44,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2021-11-19 15:02:46,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [626916938] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:02:46,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:02:46,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 17, 4] total 27 [2021-11-19 15:02:46,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432465997] [2021-11-19 15:02:46,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:46,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:02:46,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:46,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:02:46,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-11-19 15:02:46,212 INFO L87 Difference]: Start difference. First operand 16552 states and 23657 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-19 15:02:47,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:47,734 INFO L93 Difference]: Finished difference Result 16558 states and 23662 transitions. [2021-11-19 15:02:47,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:02:47,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 229 [2021-11-19 15:02:47,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:47,810 INFO L225 Difference]: With dead ends: 16558 [2021-11-19 15:02:47,810 INFO L226 Difference]: Without dead ends: 16556 [2021-11-19 15:02:47,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 887 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2021-11-19 15:02:47,828 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 2887 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2893 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:47,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2893 Valid, 8858 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:02:47,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16556 states. [2021-11-19 15:02:48,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16556 to 16556. [2021-11-19 15:02:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16556 states, 11173 states have (on average 1.2516781526895193) internal successors, (13985), 11346 states have internal predecessors, (13985), 4824 states have call successors, (4824), 563 states have call predecessors, (4824), 556 states have return successors, (4851), 4763 states have call predecessors, (4851), 4821 states have call successors, (4851) [2021-11-19 15:02:49,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16556 states to 16556 states and 23660 transitions. [2021-11-19 15:02:49,078 INFO L78 Accepts]: Start accepts. Automaton has 16556 states and 23660 transitions. Word has length 229 [2021-11-19 15:02:49,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:49,078 INFO L470 AbstractCegarLoop]: Abstraction has 16556 states and 23660 transitions. [2021-11-19 15:02:49,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-19 15:02:49,079 INFO L276 IsEmpty]: Start isEmpty. Operand 16556 states and 23660 transitions. [2021-11-19 15:02:49,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-19 15:02:49,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:49,093 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 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] [2021-11-19 15:02:49,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:49,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:49,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:49,510 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)] === [2021-11-19 15:02:49,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:49,511 INFO L85 PathProgramCache]: Analyzing trace with hash -850926435, now seen corresponding path program 1 times [2021-11-19 15:02:49,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:49,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419428061] [2021-11-19 15:02:49,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:49,514 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:49,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:49,516 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:49,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:02:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:51,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 2158 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 15:02:51,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 124 proven. 3 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2021-11-19 15:02:54,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2021-11-19 15:02:57,362 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:57,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419428061] [2021-11-19 15:02:57,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419428061] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:02:57,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [32462440] [2021-11-19 15:02:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:57,363 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:02:57,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:02:57,363 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:02:57,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-19 15:02:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:58,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 2158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:02:58,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2021-11-19 15:03:02,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:04,953 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2021-11-19 15:03:04,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [32462440] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:03:04,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:03:04,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 17, 4] total 27 [2021-11-19 15:03:04,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536687024] [2021-11-19 15:03:04,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:04,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:03:04,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:04,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:03:04,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-11-19 15:03:04,958 INFO L87 Difference]: Start difference. First operand 16556 states and 23660 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-19 15:03:06,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:06,326 INFO L93 Difference]: Finished difference Result 16808 states and 23920 transitions. [2021-11-19 15:03:06,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:03:06,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 234 [2021-11-19 15:03:06,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:06,405 INFO L225 Difference]: With dead ends: 16808 [2021-11-19 15:03:06,405 INFO L226 Difference]: Without dead ends: 16806 [2021-11-19 15:03:06,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 907 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2021-11-19 15:03:06,419 INFO L933 BasicCegarLoop]: 2969 mSDtfsCounter, 2802 mSDsluCounter, 6081 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2807 SdHoareTripleChecker+Valid, 9050 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:06,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2807 Valid, 9050 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:03:06,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16806 states. [2021-11-19 15:03:07,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16806 to 16806. [2021-11-19 15:03:07,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16806 states, 11347 states have (on average 1.249933903234335) internal successors, (14183), 11520 states have internal predecessors, (14183), 4854 states have call successors, (4854), 609 states have call predecessors, (4854), 602 states have return successors, (4881), 4793 states have call predecessors, (4881), 4851 states have call successors, (4881) [2021-11-19 15:03:07,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16806 states to 16806 states and 23918 transitions. [2021-11-19 15:03:07,585 INFO L78 Accepts]: Start accepts. Automaton has 16806 states and 23918 transitions. Word has length 234 [2021-11-19 15:03:07,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:07,585 INFO L470 AbstractCegarLoop]: Abstraction has 16806 states and 23918 transitions. [2021-11-19 15:03:07,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-19 15:03:07,586 INFO L276 IsEmpty]: Start isEmpty. Operand 16806 states and 23918 transitions. [2021-11-19 15:03:07,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-19 15:03:07,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:07,598 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 8, 7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:07,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:07,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:08,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:08,006 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)] === [2021-11-19 15:03:08,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:08,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1877580623, now seen corresponding path program 1 times [2021-11-19 15:03:08,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:08,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214941968] [2021-11-19 15:03:08,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:08,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:08,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:08,011 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:08,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:03:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:09,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 2165 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 15:03:09,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 124 proven. 3 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-11-19 15:03:12,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:15,771 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 28 proven. 18 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2021-11-19 15:03:15,771 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:15,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214941968] [2021-11-19 15:03:15,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214941968] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:03:15,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [416481039] [2021-11-19 15:03:15,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:15,772 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:03:15,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:03:15,773 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:03:15,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 15:03:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:17,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 2165 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:03:17,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked. [2021-11-19 15:03:21,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked. [2021-11-19 15:03:23,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [416481039] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:03:23,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:03:23,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 17, 4] total 27 [2021-11-19 15:03:23,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193129264] [2021-11-19 15:03:23,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:23,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:03:23,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:23,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:03:23,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-11-19 15:03:23,501 INFO L87 Difference]: Start difference. First operand 16806 states and 23918 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 15:03:25,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:25,017 INFO L93 Difference]: Finished difference Result 16812 states and 23923 transitions. [2021-11-19 15:03:25,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:03:25,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 239 [2021-11-19 15:03:25,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:25,071 INFO L225 Difference]: With dead ends: 16812 [2021-11-19 15:03:25,071 INFO L226 Difference]: Without dead ends: 16810 [2021-11-19 15:03:25,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 955 GetRequests, 927 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2021-11-19 15:03:25,078 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 2887 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2891 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:25,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2891 Valid, 8858 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:03:25,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16810 states. [2021-11-19 15:03:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16810 to 16810. [2021-11-19 15:03:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16810 states, 11350 states have (on average 1.2498678414096915) internal successors, (14186), 11523 states have internal predecessors, (14186), 4854 states have call successors, (4854), 610 states have call predecessors, (4854), 603 states have return successors, (4881), 4793 states have call predecessors, (4881), 4851 states have call successors, (4881) [2021-11-19 15:03:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16810 states to 16810 states and 23921 transitions. [2021-11-19 15:03:26,303 INFO L78 Accepts]: Start accepts. Automaton has 16810 states and 23921 transitions. Word has length 239 [2021-11-19 15:03:26,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:26,303 INFO L470 AbstractCegarLoop]: Abstraction has 16810 states and 23921 transitions. [2021-11-19 15:03:26,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 15:03:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 16810 states and 23921 transitions. [2021-11-19 15:03:26,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-19 15:03:26,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:26,318 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:26,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:26,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-19 15:03:26,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:26,735 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)] === [2021-11-19 15:03:26,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:26,736 INFO L85 PathProgramCache]: Analyzing trace with hash 17047298, now seen corresponding path program 1 times [2021-11-19 15:03:26,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:26,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713051621] [2021-11-19 15:03:26,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:26,739 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:26,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:26,742 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:26,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 15:03:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:28,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 2123 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:03:28,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:31,728 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2021-11-19 15:03:31,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:33,183 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2021-11-19 15:03:33,184 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:33,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713051621] [2021-11-19 15:03:33,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713051621] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:03:33,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:03:33,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 15:03:33,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153806794] [2021-11-19 15:03:33,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:33,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:03:33,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:33,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:03:33,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:03:33,186 INFO L87 Difference]: Start difference. First operand 16810 states and 23921 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-19 15:03:34,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:34,379 INFO L93 Difference]: Finished difference Result 16816 states and 23926 transitions. [2021-11-19 15:03:34,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:03:34,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 226 [2021-11-19 15:03:34,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:34,430 INFO L225 Difference]: With dead ends: 16816 [2021-11-19 15:03:34,430 INFO L226 Difference]: Without dead ends: 16814 [2021-11-19 15:03:34,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:03:34,437 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 2898 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2901 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:34,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2901 Valid, 8858 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:03:34,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16814 states. [2021-11-19 15:03:35,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16814 to 16814. [2021-11-19 15:03:35,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16814 states, 11353 states have (on average 1.2498018144983705) internal successors, (14189), 11526 states have internal predecessors, (14189), 4854 states have call successors, (4854), 611 states have call predecessors, (4854), 604 states have return successors, (4881), 4793 states have call predecessors, (4881), 4851 states have call successors, (4881) [2021-11-19 15:03:35,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16814 states to 16814 states and 23924 transitions. [2021-11-19 15:03:35,632 INFO L78 Accepts]: Start accepts. Automaton has 16814 states and 23924 transitions. Word has length 226 [2021-11-19 15:03:35,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:35,632 INFO L470 AbstractCegarLoop]: Abstraction has 16814 states and 23924 transitions. [2021-11-19 15:03:35,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-19 15:03:35,632 INFO L276 IsEmpty]: Start isEmpty. Operand 16814 states and 23924 transitions. [2021-11-19 15:03:35,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-19 15:03:35,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:35,646 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 10, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:35,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:35,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:35,870 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)] === [2021-11-19 15:03:35,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:35,871 INFO L85 PathProgramCache]: Analyzing trace with hash -682276982, now seen corresponding path program 1 times [2021-11-19 15:03:35,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:35,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203766838] [2021-11-19 15:03:35,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:35,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:35,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:35,878 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:35,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 15:03:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:37,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 2130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:03:37,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2021-11-19 15:03:41,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2021-11-19 15:03:42,466 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:42,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203766838] [2021-11-19 15:03:42,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203766838] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:03:42,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:03:42,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 15:03:42,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640725973] [2021-11-19 15:03:42,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:42,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:03:42,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:42,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:03:42,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:03:42,469 INFO L87 Difference]: Start difference. First operand 16814 states and 23924 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 15:03:43,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:43,714 INFO L93 Difference]: Finished difference Result 16820 states and 23929 transitions. [2021-11-19 15:03:43,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:03:43,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 231 [2021-11-19 15:03:43,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:43,769 INFO L225 Difference]: With dead ends: 16820 [2021-11-19 15:03:43,769 INFO L226 Difference]: Without dead ends: 16818 [2021-11-19 15:03:43,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:03:43,776 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 2898 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2900 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:43,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2900 Valid, 8858 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:03:43,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16818 states. [2021-11-19 15:03:44,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16818 to 16818. [2021-11-19 15:03:44,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16818 states, 11356 states have (on average 1.2497358224727018) internal successors, (14192), 11529 states have internal predecessors, (14192), 4854 states have call successors, (4854), 612 states have call predecessors, (4854), 605 states have return successors, (4881), 4793 states have call predecessors, (4881), 4851 states have call successors, (4881) [2021-11-19 15:03:45,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16818 states to 16818 states and 23927 transitions. [2021-11-19 15:03:45,046 INFO L78 Accepts]: Start accepts. Automaton has 16818 states and 23927 transitions. Word has length 231 [2021-11-19 15:03:45,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:45,046 INFO L470 AbstractCegarLoop]: Abstraction has 16818 states and 23927 transitions. [2021-11-19 15:03:45,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 15:03:45,048 INFO L276 IsEmpty]: Start isEmpty. Operand 16818 states and 23927 transitions. [2021-11-19 15:03:45,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-19 15:03:45,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:45,058 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 11, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:45,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:45,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:45,259 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)] === [2021-11-19 15:03:45,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:45,259 INFO L85 PathProgramCache]: Analyzing trace with hash -2087992675, now seen corresponding path program 1 times [2021-11-19 15:03:45,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:45,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101455959] [2021-11-19 15:03:45,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:45,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:45,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:45,263 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:45,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 15:03:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:46,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 2186 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 15:03:46,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 124 proven. 3 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2021-11-19 15:03:50,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 34 proven. 18 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-19 15:03:53,146 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:53,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101455959] [2021-11-19 15:03:53,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101455959] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:03:53,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [89991214] [2021-11-19 15:03:53,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:53,146 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:03:53,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:03:53,147 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:03:53,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-19 15:03:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:54,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 2186 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:03:54,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2021-11-19 15:03:58,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:01,009 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2021-11-19 15:04:01,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [89991214] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:04:01,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:04:01,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 17, 4] total 27 [2021-11-19 15:04:01,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839251262] [2021-11-19 15:04:01,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:01,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:04:01,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:01,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:04:01,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-11-19 15:04:01,012 INFO L87 Difference]: Start difference. First operand 16818 states and 23927 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:04:02,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:02,637 INFO L93 Difference]: Finished difference Result 16824 states and 23932 transitions. [2021-11-19 15:04:02,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:04:02,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 254 [2021-11-19 15:04:02,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:02,698 INFO L225 Difference]: With dead ends: 16824 [2021-11-19 15:04:02,698 INFO L226 Difference]: Without dead ends: 16820 [2021-11-19 15:04:02,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1015 GetRequests, 987 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2021-11-19 15:04:02,709 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 2887 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2888 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:02,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2888 Valid, 8858 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:04:02,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16820 states. [2021-11-19 15:04:03,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16820 to 16820. [2021-11-19 15:04:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16820 states, 11358 states have (on average 1.2496038034865293) internal successors, (14193), 11530 states have internal predecessors, (14193), 4854 states have call successors, (4854), 613 states have call predecessors, (4854), 605 states have return successors, (4881), 4793 states have call predecessors, (4881), 4851 states have call successors, (4881) [2021-11-19 15:04:04,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16820 states to 16820 states and 23928 transitions. [2021-11-19 15:04:04,032 INFO L78 Accepts]: Start accepts. Automaton has 16820 states and 23928 transitions. Word has length 254 [2021-11-19 15:04:04,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:04,033 INFO L470 AbstractCegarLoop]: Abstraction has 16820 states and 23928 transitions. [2021-11-19 15:04:04,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:04:04,033 INFO L276 IsEmpty]: Start isEmpty. Operand 16820 states and 23928 transitions. [2021-11-19 15:04:04,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-19 15:04:04,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:04,043 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 12, 11, 11, 10, 10, 10, 10, 10, 10, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:04:04,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:04,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-19 15:04:04,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:04,446 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)] === [2021-11-19 15:04:04,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:04,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1097089610, now seen corresponding path program 1 times [2021-11-19 15:04:04,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:04,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364823348] [2021-11-19 15:04:04,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:04,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:04,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:04,450 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:04,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 15:04:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:05,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 2144 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:04:05,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:09,692 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2021-11-19 15:04:09,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2021-11-19 15:04:11,237 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:11,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364823348] [2021-11-19 15:04:11,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364823348] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:04:11,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:04:11,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 15:04:11,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144068931] [2021-11-19 15:04:11,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:11,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:04:11,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:11,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:04:11,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:04:11,242 INFO L87 Difference]: Start difference. First operand 16820 states and 23928 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-19 15:04:12,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:12,673 INFO L93 Difference]: Finished difference Result 16820 states and 23928 transitions. [2021-11-19 15:04:12,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:04:12,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 241 [2021-11-19 15:04:12,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:12,767 INFO L225 Difference]: With dead ends: 16820 [2021-11-19 15:04:12,767 INFO L226 Difference]: Without dead ends: 16733 [2021-11-19 15:04:12,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:04:12,780 INFO L933 BasicCegarLoop]: 2957 mSDtfsCounter, 2894 mSDsluCounter, 5898 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2894 SdHoareTripleChecker+Valid, 8855 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:12,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2894 Valid, 8855 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:04:12,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16733 states. [2021-11-19 15:04:14,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16733 to 16724. [2021-11-19 15:04:14,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16724 states, 11300 states have (on average 1.2500884955752212) internal successors, (14126), 11466 states have internal predecessors, (14126), 4828 states have call successors, (4828), 600 states have call predecessors, (4828), 594 states have return successors, (4858), 4774 states have call predecessors, (4858), 4828 states have call successors, (4858) [2021-11-19 15:04:14,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16724 states to 16724 states and 23812 transitions. [2021-11-19 15:04:14,222 INFO L78 Accepts]: Start accepts. Automaton has 16724 states and 23812 transitions. Word has length 241 [2021-11-19 15:04:14,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:14,222 INFO L470 AbstractCegarLoop]: Abstraction has 16724 states and 23812 transitions. [2021-11-19 15:04:14,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-19 15:04:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 16724 states and 23812 transitions. [2021-11-19 15:04:14,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-19 15:04:14,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:14,233 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:04:14,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:14,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:14,434 INFO L402 AbstractCegarLoop]: === Iteration 15 === 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)] === [2021-11-19 15:04:14,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:14,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1180727387, now seen corresponding path program 1 times [2021-11-19 15:04:14,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:14,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634415914] [2021-11-19 15:04:14,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:14,436 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:14,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:14,437 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:14,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 15:04:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:16,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 2447 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:04:16,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2021-11-19 15:04:18,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2021-11-19 15:04:19,036 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:19,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634415914] [2021-11-19 15:04:19,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634415914] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:19,036 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:19,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:04:19,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316186633] [2021-11-19 15:04:19,037 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:19,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:04:19,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:19,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:04:19,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:04:19,039 INFO L87 Difference]: Start difference. First operand 16724 states and 23812 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 3 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:04:21,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:04:23,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:23,742 INFO L93 Difference]: Finished difference Result 47479 states and 67757 transitions. [2021-11-19 15:04:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:04:23,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 3 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 276 [2021-11-19 15:04:23,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:23,868 INFO L225 Difference]: With dead ends: 47479 [2021-11-19 15:04:23,868 INFO L226 Difference]: Without dead ends: 30780 [2021-11-19 15:04:23,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:04:23,977 INFO L933 BasicCegarLoop]: 3793 mSDtfsCounter, 2478 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2478 SdHoareTripleChecker+Valid, 6625 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:23,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2478 Valid, 6625 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 78 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 15:04:24,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30780 states. [2021-11-19 15:04:26,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30780 to 30758. [2021-11-19 15:04:26,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30758 states, 20627 states have (on average 1.2441945023512873) internal successors, (25664), 20952 states have internal predecessors, (25664), 9052 states have call successors, (9052), 1098 states have call predecessors, (9052), 1077 states have return successors, (9127), 8923 states have call predecessors, (9127), 9052 states have call successors, (9127) [2021-11-19 15:04:26,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30758 states to 30758 states and 43843 transitions. [2021-11-19 15:04:26,641 INFO L78 Accepts]: Start accepts. Automaton has 30758 states and 43843 transitions. Word has length 276 [2021-11-19 15:04:26,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:26,642 INFO L470 AbstractCegarLoop]: Abstraction has 30758 states and 43843 transitions. [2021-11-19 15:04:26,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 3 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:04:26,643 INFO L276 IsEmpty]: Start isEmpty. Operand 30758 states and 43843 transitions. [2021-11-19 15:04:26,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2021-11-19 15:04:26,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:26,674 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 13, 13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:04:26,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:26,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:26,875 INFO L402 AbstractCegarLoop]: === Iteration 16 === 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)] === [2021-11-19 15:04:26,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:26,875 INFO L85 PathProgramCache]: Analyzing trace with hash -812179291, now seen corresponding path program 1 times [2021-11-19 15:04:26,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:26,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779156075] [2021-11-19 15:04:26,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:26,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:26,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:26,879 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:26,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 15:04:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:29,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 3123 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:04:29,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:33,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 1269 trivial. 0 not checked. [2021-11-19 15:04:33,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:35,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2021-11-19 15:04:35,591 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:35,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779156075] [2021-11-19 15:04:35,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779156075] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:35,592 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:35,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:04:35,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219589353] [2021-11-19 15:04:35,592 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:35,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:04:35,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:35,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:04:35,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:04:35,594 INFO L87 Difference]: Start difference. First operand 30758 states and 43843 transitions. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 4 states have call successors, (92), 3 states have call predecessors, (92), 3 states have return successors, (90), 4 states have call predecessors, (90), 4 states have call successors, (90) [2021-11-19 15:04:37,728 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 [] [2021-11-19 15:04:52,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:52,275 INFO L93 Difference]: Finished difference Result 71501 states and 101334 transitions. [2021-11-19 15:04:52,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:04:52,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 4 states have call successors, (92), 3 states have call predecessors, (92), 3 states have return successors, (90), 4 states have call predecessors, (90), 4 states have call successors, (90) Word has length 544 [2021-11-19 15:04:52,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:52,471 INFO L225 Difference]: With dead ends: 71501 [2021-11-19 15:04:52,471 INFO L226 Difference]: Without dead ends: 40768 [2021-11-19 15:04:52,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1086 GetRequests, 1084 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:04:52,598 INFO L933 BasicCegarLoop]: 5146 mSDtfsCounter, 4991 mSDsluCounter, 4072 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 591 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4991 SdHoareTripleChecker+Valid, 9218 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:52,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4991 Valid, 9218 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 1132 Invalid, 1 Unknown, 0 Unchecked, 13.1s Time] [2021-11-19 15:04:52,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40768 states. [2021-11-19 15:04:55,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40768 to 36024. [2021-11-19 15:04:55,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36024 states, 24177 states have (on average 1.235926707201059) internal successors, (29881), 24544 states have internal predecessors, (29881), 10369 states have call successors, (10369), 1502 states have call predecessors, (10369), 1476 states have return successors, (10437), 10214 states have call predecessors, (10437), 10369 states have call successors, (10437) [2021-11-19 15:04:55,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36024 states to 36024 states and 50687 transitions. [2021-11-19 15:04:55,914 INFO L78 Accepts]: Start accepts. Automaton has 36024 states and 50687 transitions. Word has length 544 [2021-11-19 15:04:55,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:55,915 INFO L470 AbstractCegarLoop]: Abstraction has 36024 states and 50687 transitions. [2021-11-19 15:04:55,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 4 states have call successors, (92), 3 states have call predecessors, (92), 3 states have return successors, (90), 4 states have call predecessors, (90), 4 states have call successors, (90) [2021-11-19 15:04:55,916 INFO L276 IsEmpty]: Start isEmpty. Operand 36024 states and 50687 transitions. [2021-11-19 15:04:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2021-11-19 15:04:55,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:55,944 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 13, 13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:04:55,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:56,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:56,145 INFO L402 AbstractCegarLoop]: === Iteration 17 === 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)] === [2021-11-19 15:04:56,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:56,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1064801224, now seen corresponding path program 1 times [2021-11-19 15:04:56,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:56,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794963736] [2021-11-19 15:04:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:56,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:56,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:56,150 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:56,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 15:04:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:58,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 3289 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:04:58,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:02,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 898 proven. 0 refuted. 0 times theorem prover too weak. 1391 trivial. 0 not checked. [2021-11-19 15:05:02,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 2268 trivial. 0 not checked. [2021-11-19 15:05:05,363 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:05,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794963736] [2021-11-19 15:05:05,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794963736] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:05:05,363 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:05:05,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:05:05,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668631497] [2021-11-19 15:05:05,364 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:05,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:05:05,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:05,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:05:05,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:05:05,366 INFO L87 Difference]: Start difference. First operand 36024 states and 50687 transitions. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 4 states have call successors, (104), 3 states have call predecessors, (104), 3 states have return successors, (102), 4 states have call predecessors, (102), 4 states have call successors, (102) [2021-11-19 15:05:07,600 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 [] [2021-11-19 15:05:25,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:25,003 INFO L93 Difference]: Finished difference Result 100604 states and 141516 transitions. [2021-11-19 15:05:25,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:05:25,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 4 states have call successors, (104), 3 states have call predecessors, (104), 3 states have return successors, (102), 4 states have call predecessors, (102), 4 states have call successors, (102) Word has length 622 [2021-11-19 15:05:25,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:25,321 INFO L225 Difference]: With dead ends: 100604 [2021-11-19 15:05:25,322 INFO L226 Difference]: Without dead ends: 64654 [2021-11-19 15:05:25,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1242 GetRequests, 1240 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:05:25,470 INFO L933 BasicCegarLoop]: 5666 mSDtfsCounter, 5062 mSDsluCounter, 3892 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 506 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5062 SdHoareTripleChecker+Valid, 9558 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:25,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5062 Valid, 9558 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 1254 Invalid, 1 Unknown, 0 Unchecked, 14.0s Time] [2021-11-19 15:05:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64654 states. [2021-11-19 15:05:31,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64654 to 64634. [2021-11-19 15:05:31,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64634 states, 43259 states have (on average 1.2300561732818605) internal successors, (53211), 43884 states have internal predecessors, (53211), 18697 states have call successors, (18697), 2714 states have call predecessors, (18697), 2676 states have return successors, (18801), 18434 states have call predecessors, (18801), 18697 states have call successors, (18801) [2021-11-19 15:05:32,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64634 states to 64634 states and 90709 transitions. [2021-11-19 15:05:32,213 INFO L78 Accepts]: Start accepts. Automaton has 64634 states and 90709 transitions. Word has length 622 [2021-11-19 15:05:32,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:32,214 INFO L470 AbstractCegarLoop]: Abstraction has 64634 states and 90709 transitions. [2021-11-19 15:05:32,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 4 states have call successors, (104), 3 states have call predecessors, (104), 3 states have return successors, (102), 4 states have call predecessors, (102), 4 states have call successors, (102) [2021-11-19 15:05:32,215 INFO L276 IsEmpty]: Start isEmpty. Operand 64634 states and 90709 transitions. [2021-11-19 15:05:32,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2021-11-19 15:05:32,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:32,276 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 22, 22, 13, 13, 13, 13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:05:32,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-19 15:05:32,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:32,498 INFO L402 AbstractCegarLoop]: === Iteration 18 === 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)] === [2021-11-19 15:05:32,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:32,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1878968867, now seen corresponding path program 1 times [2021-11-19 15:05:32,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:32,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163216792] [2021-11-19 15:05:32,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:32,501 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:32,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:32,502 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:32,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1f94a0-dc57-415d-a6d4-1a8f08104ff0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 15:05:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:35,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 3397 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:05:35,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:39,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2827 backedges. 1215 proven. 0 refuted. 0 times theorem prover too weak. 1612 trivial. 0 not checked. [2021-11-19 15:05:39,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:41,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2827 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2815 trivial. 0 not checked. [2021-11-19 15:05:41,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:41,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163216792] [2021-11-19 15:05:41,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163216792] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:05:41,196 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:05:41,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 15:05:41,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870495197] [2021-11-19 15:05:41,196 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:41,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:05:41,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:41,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:05:41,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:05:41,198 INFO L87 Difference]: Start difference. First operand 64634 states and 90709 transitions. Second operand has 8 states, 8 states have (on average 38.125) internal successors, (305), 8 states have internal predecessors, (305), 2 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97)