./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-prism54-prism54.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 03e2d0e28997af6c53edeab79acb28db60116030b3545ebb50af81c3e69fe889 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:08:10,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:08:10,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:08:10,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:08:10,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:08:10,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:08:10,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:08:10,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:08:10,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:08:10,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:08:10,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:08:10,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:08:10,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:08:10,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:08:10,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:08:10,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:08:10,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:08:10,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:08:10,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:08:10,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:08:10,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:08:10,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:08:10,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:08:10,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:08:10,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:08:10,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:08:10,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:08:10,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:08:10,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:08:10,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:08:10,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:08:10,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:08:10,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:08:10,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:08:10,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:08:10,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:08:10,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:08:10,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:08:10,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:08:10,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:08:10,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:08:10,985 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:08:11,027 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:08:11,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:08:11,029 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:08:11,029 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:08:11,030 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:08:11,030 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:08:11,030 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:08:11,031 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:08:11,031 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:08:11,032 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:08:11,032 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:08:11,032 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:08:11,033 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:08:11,033 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:08:11,033 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:08:11,034 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:08:11,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:08:11,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:08:11,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:08:11,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:08:11,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:08:11,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:08:11,037 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:08:11,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:08:11,037 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:08:11,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:08:11,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:08:11,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:08:11,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:08:11,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:08:11,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:08:11,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:08:11,040 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:08:11,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:08:11,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:08:11,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:08:11,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:08:11,041 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_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03e2d0e28997af6c53edeab79acb28db60116030b3545ebb50af81c3e69fe889 [2021-11-12 23:08:11,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:08:11,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:08:11,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:08:11,411 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:08:11,413 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:08:11,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i [2021-11-12 23:08:11,512 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/data/738e48054/d1489bbb150c4b9cb0b449d1a48a6485/FLAG82b437537 [2021-11-12 23:08:12,900 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:08:12,902 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i [2021-11-12 23:08:12,991 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/data/738e48054/d1489bbb150c4b9cb0b449d1a48a6485/FLAG82b437537 [2021-11-12 23:08:13,476 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/data/738e48054/d1489bbb150c4b9cb0b449d1a48a6485 [2021-11-12 23:08:13,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:08:13,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:08:13,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:08:13,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:08:13,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:08:13,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:08:13" (1/1) ... [2021-11-12 23:08:13,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68245137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:13, skipping insertion in model container [2021-11-12 23:08:13,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:08:13" (1/1) ... [2021-11-12 23:08:13,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:08:13,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:08:15,543 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:08:16,466 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:08:17,007 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:08:17,029 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:08:17,031 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:08:17,040 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:08:17,043 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:08:17,072 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:08:17,073 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:08:17,156 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:08:17,158 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:08:17,160 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:08:17,163 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:08:17,165 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:08:17,166 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:08:17,167 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:08:17,204 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:08:17,210 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:08:19,832 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482333,482346] [2021-11-12 23:08:19,836 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482502,482515] [2021-11-12 23:08:19,837 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482669,482682] [2021-11-12 23:08:19,838 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482837,482850] [2021-11-12 23:08:19,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:08:20,031 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:08:20,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1bd27ad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:20, skipping insertion in model container [2021-11-12 23:08:20,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:08:20,033 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:08:20,036 INFO L158 Benchmark]: Toolchain (without parser) took 6553.38ms. Allocated memory was 109.1MB in the beginning and 169.9MB in the end (delta: 60.8MB). Free memory was 70.1MB in the beginning and 82.4MB in the end (delta: -12.3MB). Peak memory consumption was 67.0MB. Max. memory is 16.1GB. [2021-11-12 23:08:20,037 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 77.6MB. Free memory was 58.4MB in the beginning and 58.4MB in the end (delta: 37.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:08:20,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 6549.49ms. Allocated memory was 109.1MB in the beginning and 169.9MB in the end (delta: 60.8MB). Free memory was 69.8MB in the beginning and 82.4MB in the end (delta: -12.6MB). Peak memory consumption was 67.0MB. Max. memory is 16.1GB. [2021-11-12 23:08:20,040 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 77.6MB. Free memory was 58.4MB in the beginning and 58.4MB in the end (delta: 37.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 6549.49ms. Allocated memory was 109.1MB in the beginning and 169.9MB in the end (delta: 60.8MB). Free memory was 69.8MB in the beginning and 82.4MB in the end (delta: -12.6MB). Peak memory consumption was 67.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5970]: 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_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 03e2d0e28997af6c53edeab79acb28db60116030b3545ebb50af81c3e69fe889 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:08:22,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:08:22,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:08:23,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:08:23,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:08:23,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:08:23,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:08:23,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:08:23,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:08:23,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:08:23,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:08:23,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:08:23,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:08:23,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:08:23,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:08:23,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:08:23,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:08:23,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:08:23,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:08:23,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:08:23,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:08:23,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:08:23,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:08:23,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:08:23,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:08:23,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:08:23,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:08:23,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:08:23,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:08:23,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:08:23,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:08:23,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:08:23,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:08:23,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:08:23,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:08:23,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:08:23,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:08:23,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:08:23,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:08:23,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:08:23,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:08:23,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:08:23,183 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:08:23,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:08:23,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:08:23,186 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:08:23,187 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:08:23,187 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:08:23,188 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:08:23,188 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:08:23,188 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:08:23,189 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:08:23,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:08:23,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:08:23,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:08:23,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:08:23,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:08:23,194 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:08:23,194 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:08:23,194 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:08:23,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:08:23,195 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:08:23,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:08:23,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:08:23,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:08:23,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:08:23,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:08:23,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:08:23,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:08:23,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:08:23,198 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:08:23,199 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:08:23,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:08:23,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:08:23,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:08:23,200 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_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03e2d0e28997af6c53edeab79acb28db60116030b3545ebb50af81c3e69fe889 [2021-11-12 23:08:23,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:08:23,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:08:23,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:08:23,761 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:08:23,762 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:08:23,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i [2021-11-12 23:08:23,853 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/data/5fac2087f/f4739b61977b4711a8e0e2c218d09c24/FLAGc970d8ae0 [2021-11-12 23:08:25,358 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:08:25,359 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i [2021-11-12 23:08:25,452 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/data/5fac2087f/f4739b61977b4711a8e0e2c218d09c24/FLAGc970d8ae0 [2021-11-12 23:08:25,858 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/data/5fac2087f/f4739b61977b4711a8e0e2c218d09c24 [2021-11-12 23:08:25,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:08:25,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:08:25,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:08:25,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:08:25,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:08:25,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:08:25" (1/1) ... [2021-11-12 23:08:25,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@215eb162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:25, skipping insertion in model container [2021-11-12 23:08:25,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:08:25" (1/1) ... [2021-11-12 23:08:25,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:08:26,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:08:32,884 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482333,482346] [2021-11-12 23:08:32,888 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482502,482515] [2021-11-12 23:08:32,889 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482669,482682] [2021-11-12 23:08:32,890 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482837,482850] [2021-11-12 23:08:32,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:08:33,145 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:08:33,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:08:33,942 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482333,482346] [2021-11-12 23:08:33,943 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482502,482515] [2021-11-12 23:08:33,943 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482669,482682] [2021-11-12 23:08:33,944 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482837,482850] [2021-11-12 23:08:33,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:08:34,071 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:08:34,850 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482333,482346] [2021-11-12 23:08:34,850 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482502,482515] [2021-11-12 23:08:34,851 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482669,482682] [2021-11-12 23:08:34,852 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482837,482850] [2021-11-12 23:08:34,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:08:35,310 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:08:35,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:35 WrapperNode [2021-11-12 23:08:35,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:08:35,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:08:35,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:08:35,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:08:35,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:35" (1/1) ... [2021-11-12 23:08:35,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:35" (1/1) ... [2021-11-12 23:08:35,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:08:35,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:08:35,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:08:35,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:08:35,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:35" (1/1) ... [2021-11-12 23:08:35,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:35" (1/1) ... [2021-11-12 23:08:36,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:35" (1/1) ... [2021-11-12 23:08:36,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:35" (1/1) ... [2021-11-12 23:08:36,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:35" (1/1) ... [2021-11-12 23:08:36,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:35" (1/1) ... [2021-11-12 23:08:36,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:35" (1/1) ... [2021-11-12 23:08:36,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:08:36,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:08:36,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:08:36,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:08:36,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:35" (1/1) ... [2021-11-12 23:08:36,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:08:36,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:08:37,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:08:37,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:08:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2021-11-12 23:08:37,139 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2021-11-12 23:08:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_eth_tx_timeout [2021-11-12 23:08:37,139 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_eth_tx_timeout [2021-11-12 23:08:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-12 23:08:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-12 23:08:37,140 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-12 23:08:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 23:08:37,140 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 23:08:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_trigger [2021-11-12 23:08:37,141 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_trigger [2021-11-12 23:08:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-12 23:08:37,141 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-12 23:08:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:08:37,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:08:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_slock_of_NOT_ARG_SIGN [2021-11-12 23:08:37,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_slock_of_NOT_ARG_SIGN [2021-11-12 23:08:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_mib_mode_helper [2021-11-12 23:08:37,142 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_mib_mode_helper [2021-11-12 23:08:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 23:08:37,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 23:08:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-12 23:08:37,143 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-12 23:08:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-12 23:08:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-12 23:08:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2021-11-12 23:08:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2021-11-12 23:08:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_slock_of_NOT_ARG_SIGN [2021-11-12 23:08:37,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_slock_of_NOT_ARG_SIGN [2021-11-12 23:08:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set_request [2021-11-12 23:08:37,146 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set_request [2021-11-12 23:08:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2021-11-12 23:08:37,146 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2021-11-12 23:08:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 23:08:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_get_state [2021-11-12 23:08:37,147 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_get_state [2021-11-12 23:08:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-12 23:08:37,147 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-12 23:08:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 23:08:37,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 23:08:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-12 23:08:37,148 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-12 23:08:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-12 23:08:37,150 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-12 23:08:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_release [2021-11-12 23:08:37,151 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_release [2021-11-12 23:08:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 23:08:37,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 23:08:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-12 23:08:37,152 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-12 23:08:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:08:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure send_simple_event [2021-11-12 23:08:37,152 INFO L138 BoogieDeclarations]: Found implementation of procedure send_simple_event [2021-11-12 23:08:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-12 23:08:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:08:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:08:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:08:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-12 23:08:37,154 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-12 23:08:37,155 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-12 23:08:37,156 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-12 23:08:37,156 INFO L130 BoogieDeclarations]: Found specification of procedure send_formatted_event [2021-11-12 23:08:37,156 INFO L138 BoogieDeclarations]: Found implementation of procedure send_formatted_event [2021-11-12 23:08:37,157 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set [2021-11-12 23:08:37,157 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set [2021-11-12 23:08:37,157 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-12 23:08:37,157 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-12 23:08:37,157 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_reset [2021-11-12 23:08:37,158 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_reset [2021-11-12 23:08:37,158 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-12 23:08:37,158 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-12 23:08:37,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-12 23:08:37,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-12 23:08:37,159 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2021-11-12 23:08:37,159 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2021-11-12 23:08:37,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 23:08:37,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 23:08:37,160 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-12 23:08:37,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-12 23:08:37,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 23:08:37,161 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 23:08:37,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-12 23:08:37,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-12 23:08:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-12 23:08:37,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-12 23:08:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_open [2021-11-12 23:08:37,163 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_open [2021-11-12 23:08:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_resume [2021-11-12 23:08:37,164 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_resume [2021-11-12 23:08:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-12 23:08:37,164 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-12 23:08:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 23:08:37,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 23:08:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:08:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-12 23:08:37,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-12 23:08:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-12 23:08:37,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-12 23:08:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2021-11-12 23:08:37,167 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2021-11-12 23:08:37,167 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-12 23:08:37,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-12 23:08:37,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 23:08:37,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 23:08:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-12 23:08:37,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-12 23:08:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:08:37,174 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-12 23:08:37,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 23:08:37,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 23:08:37,175 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:08:37,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:08:37,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 23:08:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-12 23:08:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-12 23:08:37,183 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-12 23:08:37,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-12 23:08:37,183 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-12 23:08:37,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-12 23:08:37,183 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 23:08:37,184 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 23:08:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-12 23:08:37,184 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-12 23:08:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-12 23:08:37,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-12 23:08:37,185 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2021-11-12 23:08:37,185 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2021-11-12 23:08:37,185 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-12 23:08:37,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-12 23:08:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-12 23:08:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-12 23:08:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 23:08:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_prism54_module_exit_12_2 [2021-11-12 23:08:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_prism54_module_exit_12_2 [2021-11-12 23:08:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2021-11-12 23:08:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2021-11-12 23:08:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-12 23:08:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-12 23:08:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:08:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:08:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2021-11-12 23:08:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2021-11-12 23:08:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-12 23:08:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-12 23:08:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:08:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-12 23:08:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-12 23:08:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_clear_mac [2021-11-12 23:08:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_clear_mac [2021-11-12 23:08:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:08:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_wpa_bss_ie_get [2021-11-12 23:08:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_wpa_bss_ie_get [2021-11-12 23:08:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:08:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 23:08:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:08:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:08:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 23:08:37,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 23:08:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 23:08:37,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 23:08:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-12 23:08:37,191 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-12 23:08:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-12 23:08:37,192 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-12 23:08:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure handle_request [2021-11-12 23:08:37,192 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_request [2021-11-12 23:08:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_bring_down [2021-11-12 23:08:37,192 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_bring_down [2021-11-12 23:08:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-12 23:08:37,193 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-12 23:08:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-12 23:08:37,193 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-12 23:08:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-12 23:08:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-12 23:08:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:08:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:08:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-12 23:08:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-12 23:08:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-12 23:08:37,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-12 23:08:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-12 23:08:37,195 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-12 23:08:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-12 23:08:37,195 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-12 23:08:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:08:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-12 23:08:37,196 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-12 23:08:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_set_state [2021-11-12 23:08:37,196 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_set_state [2021-11-12 23:08:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2021-11-12 23:08:37,197 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2021-11-12 23:08:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:08:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set_varlen [2021-11-12 23:08:37,197 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set_varlen [2021-11-12 23:08:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2021-11-12 23:08:37,198 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2021-11-12 23:08:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:08:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2021-11-12 23:08:37,198 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2021-11-12 23:08:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:08:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:08:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:08:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:08:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_close [2021-11-12 23:08:37,199 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_close [2021-11-12 23:08:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-12 23:08:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-12 23:08:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_get_request [2021-11-12 23:08:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_get_request [2021-11-12 23:08:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-12 23:08:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-12 23:08:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-12 23:08:37,201 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-12 23:08:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-12 23:08:37,201 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-12 23:08:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-12 23:08:37,201 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-12 23:08:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_remove [2021-11-12 23:08:37,202 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_remove [2021-11-12 23:08:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_w32_flush [2021-11-12 23:08:37,202 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_w32_flush [2021-11-12 23:08:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 23:08:37,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 23:08:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-12 23:08:37,203 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-12 23:08:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-11-12 23:08:37,203 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-11-12 23:08:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-12 23:08:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-12 23:08:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-12 23:08:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-12 23:08:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit_list [2021-11-12 23:08:37,210 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit_list [2021-11-12 23:08:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-12 23:08:37,210 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-12 23:08:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-12 23:08:37,211 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-12 23:08:37,211 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-12 23:08:37,211 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-12 23:08:37,211 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgmt_rx_fill [2021-11-12 23:08:37,211 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgmt_rx_fill [2021-11-12 23:08:37,212 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_transaction [2021-11-12 23:08:37,216 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_transaction [2021-11-12 23:08:37,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_61 [2021-11-12 23:08:37,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_61 [2021-11-12 23:08:37,217 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-12 23:08:37,217 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-12 23:08:37,217 INFO L130 BoogieDeclarations]: Found specification of procedure channel_of_freq [2021-11-12 23:08:37,218 INFO L138 BoogieDeclarations]: Found implementation of procedure channel_of_freq [2021-11-12 23:08:37,218 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-12 23:08:37,218 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-12 23:08:37,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 23:08:37,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 23:08:37,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 23:08:37,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 23:08:37,219 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-12 23:08:37,219 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-12 23:08:37,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:08:37,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:08:37,219 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_free_memory [2021-11-12 23:08:37,220 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_free_memory [2021-11-12 23:08:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit [2021-11-12 23:08:37,220 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit [2021-11-12 23:08:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-12 23:08:37,220 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-12 23:08:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32s [2021-11-12 23:08:37,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32s [2021-11-12 23:08:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2021-11-12 23:08:37,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2021-11-12 23:08:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-12 23:08:37,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-12 23:08:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 23:08:37,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 23:08:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-12 23:08:37,222 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-12 23:08:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-12 23:08:37,222 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-12 23:08:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_in_queue [2021-11-12 23:08:37,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_in_queue [2021-11-12 23:08:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-12 23:08:37,223 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-12 23:08:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-12 23:08:37,223 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-12 23:08:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 23:08:37,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 23:08:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-12 23:08:37,224 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-12 23:08:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_disable_interrupts [2021-11-12 23:08:37,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_disable_interrupts [2021-11-12 23:08:43,571 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:10:01,220 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 23:10:05,390 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:10:05,391 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-12 23:10:05,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:10:05 BoogieIcfgContainer [2021-11-12 23:10:05,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:10:05,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:10:05,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:10:05,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:10:05,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:08:25" (1/3) ... [2021-11-12 23:10:05,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff5d080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:10:05, skipping insertion in model container [2021-11-12 23:10:05,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:35" (2/3) ... [2021-11-12 23:10:05,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff5d080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:10:05, skipping insertion in model container [2021-11-12 23:10:05,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:10:05" (3/3) ... [2021-11-12 23:10:05,407 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i [2021-11-12 23:10:05,413 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:10:05,414 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-12 23:10:05,493 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:10:05,500 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:10:05,501 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 23:10:05,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 2399 states, 1649 states have (on average 1.2941176470588236) internal successors, (2134), 1700 states have internal predecessors, (2134), 620 states have call successors, (620), 128 states have call predecessors, (620), 127 states have return successors, (614), 594 states have call predecessors, (614), 614 states have call successors, (614) [2021-11-12 23:10:05,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-12 23:10:05,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:05,608 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:10:05,609 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:10:05,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:05,616 INFO L85 PathProgramCache]: Analyzing trace with hash 2143999495, now seen corresponding path program 1 times [2021-11-12 23:10:05,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:05,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15507160] [2021-11-12 23:10:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:05,663 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:05,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:05,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:05,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:10:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:19,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 5512 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:10:19,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-12 23:10:20,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:20,633 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-12 23:10:20,634 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:20,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15507160] [2021-11-12 23:10:20,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15507160] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:10:20,635 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:10:20,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:10:20,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842010636] [2021-11-12 23:10:20,638 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:20,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:10:20,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:20,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:10:20,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:10:20,702 INFO L87 Difference]: Start difference. First operand has 2399 states, 1649 states have (on average 1.2941176470588236) internal successors, (2134), 1700 states have internal predecessors, (2134), 620 states have call successors, (620), 128 states have call predecessors, (620), 127 states have return successors, (614), 594 states have call predecessors, (614), 614 states have call successors, (614) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-12 23:10:23,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:32,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:32,162 INFO L93 Difference]: Finished difference Result 8832 states and 12796 transitions. [2021-11-12 23:10:32,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:10:32,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2021-11-12 23:10:32,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:32,426 INFO L225 Difference]: With dead ends: 8832 [2021-11-12 23:10:32,426 INFO L226 Difference]: Without dead ends: 6418 [2021-11-12 23:10:32,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:10:32,483 INFO L933 BasicCegarLoop]: 4360 mSDtfsCounter, 5627 mSDsluCounter, 7736 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9778.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5627 SdHoareTripleChecker+Valid, 12096 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 100.53ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10599.77ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:32,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5627 Valid, 12096 Invalid, 1090 Unknown, 0 Unchecked, 100.53ms Time], IncrementalHoareTripleChecker [15 Valid, 1074 Invalid, 1 Unknown, 0 Unchecked, 10599.77ms Time] [2021-11-12 23:10:32,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2021-11-12 23:10:33,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 6364. [2021-11-12 23:10:33,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6364 states, 4389 states have (on average 1.2665755297334245) internal successors, (5559), 4536 states have internal predecessors, (5559), 1612 states have call successors, (1612), 363 states have call predecessors, (1612), 360 states have return successors, (1612), 1536 states have call predecessors, (1612), 1608 states have call successors, (1612) [2021-11-12 23:10:33,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6364 states to 6364 states and 8783 transitions. [2021-11-12 23:10:33,261 INFO L78 Accepts]: Start accepts. Automaton has 6364 states and 8783 transitions. Word has length 89 [2021-11-12 23:10:33,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:33,263 INFO L470 AbstractCegarLoop]: Abstraction has 6364 states and 8783 transitions. [2021-11-12 23:10:33,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-12 23:10:33,264 INFO L276 IsEmpty]: Start isEmpty. Operand 6364 states and 8783 transitions. [2021-11-12 23:10:33,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-12 23:10:33,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:33,281 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:10:33,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:33,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:33,509 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:10:33,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:33,510 INFO L85 PathProgramCache]: Analyzing trace with hash -926596189, now seen corresponding path program 1 times [2021-11-12 23:10:33,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:33,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558834814] [2021-11-12 23:10:33,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:33,530 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:33,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:33,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:33,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:10:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:47,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 5485 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:10:47,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-12 23:10:47,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-12 23:10:48,027 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:48,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558834814] [2021-11-12 23:10:48,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558834814] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:10:48,028 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:10:48,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:10:48,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761818226] [2021-11-12 23:10:48,029 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:48,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:10:48,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:48,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:10:48,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:10:48,032 INFO L87 Difference]: Start difference. First operand 6364 states and 8783 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-12 23:10:50,913 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:11:03,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:11:03,190 INFO L93 Difference]: Finished difference Result 24919 states and 34402 transitions. [2021-11-12 23:11:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:11:03,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 94 [2021-11-12 23:11:03,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:11:03,393 INFO L225 Difference]: With dead ends: 24919 [2021-11-12 23:11:03,393 INFO L226 Difference]: Without dead ends: 18572 [2021-11-12 23:11:03,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:11:03,449 INFO L933 BasicCegarLoop]: 4484 mSDtfsCounter, 8385 mSDsluCounter, 5151 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 1180 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12673.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8385 SdHoareTripleChecker+Valid, 9635 SdHoareTripleChecker+Invalid, 2431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.51ms SdHoareTripleChecker+Time, 1180 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14085.52ms IncrementalHoareTripleChecker+Time [2021-11-12 23:11:03,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8385 Valid, 9635 Invalid, 2431 Unknown, 0 Unchecked, 68.51ms Time], IncrementalHoareTripleChecker [1180 Valid, 1250 Invalid, 1 Unknown, 0 Unchecked, 14085.52ms Time] [2021-11-12 23:11:03,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18572 states. [2021-11-12 23:11:04,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18572 to 18546. [2021-11-12 23:11:04,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18546 states, 12779 states have (on average 1.267235307927068) internal successors, (16194), 13198 states have internal predecessors, (16194), 4692 states have call successors, (4692), 1079 states have call predecessors, (4692), 1072 states have return successors, (4700), 4484 states have call predecessors, (4700), 4688 states have call successors, (4700) [2021-11-12 23:11:04,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18546 states to 18546 states and 25586 transitions. [2021-11-12 23:11:04,680 INFO L78 Accepts]: Start accepts. Automaton has 18546 states and 25586 transitions. Word has length 94 [2021-11-12 23:11:04,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:11:04,683 INFO L470 AbstractCegarLoop]: Abstraction has 18546 states and 25586 transitions. [2021-11-12 23:11:04,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-12 23:11:04,684 INFO L276 IsEmpty]: Start isEmpty. Operand 18546 states and 25586 transitions. [2021-11-12 23:11:04,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-12 23:11:04,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:11:04,693 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:11:04,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:11:04,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:11:04,917 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:11:04,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:11:04,918 INFO L85 PathProgramCache]: Analyzing trace with hash 463962046, now seen corresponding path program 1 times [2021-11-12 23:11:04,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:11:04,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812539694] [2021-11-12 23:11:04,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:11:04,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:11:04,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:11:04,939 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:11:04,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:11:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:11:17,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 5523 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:11:17,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:11:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-12 23:11:17,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:11:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-12 23:11:18,182 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:11:18,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812539694] [2021-11-12 23:11:18,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812539694] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:11:18,182 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:11:18,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:11:18,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052099217] [2021-11-12 23:11:18,183 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:11:18,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:11:18,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:11:18,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:11:18,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:11:18,185 INFO L87 Difference]: Start difference. First operand 18546 states and 25586 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-12 23:11:20,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:11:22,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:11:22,497 INFO L93 Difference]: Finished difference Result 54068 states and 74570 transitions. [2021-11-12 23:11:22,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:11:22,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2021-11-12 23:11:22,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:11:22,754 INFO L225 Difference]: With dead ends: 54068 [2021-11-12 23:11:22,754 INFO L226 Difference]: Without dead ends: 35539 [2021-11-12 23:11:22,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:11:22,876 INFO L933 BasicCegarLoop]: 3868 mSDtfsCounter, 3060 mSDsluCounter, 3205 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2952.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3060 SdHoareTripleChecker+Valid, 7073 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.87ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3072.88ms IncrementalHoareTripleChecker+Time [2021-11-12 23:11:22,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3060 Valid, 7073 Invalid, 45 Unknown, 0 Unchecked, 19.87ms Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 1 Unknown, 0 Unchecked, 3072.88ms Time] [2021-11-12 23:11:22,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35539 states. [2021-11-12 23:11:25,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35539 to 35490. [2021-11-12 23:11:25,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35490 states, 24413 states have (on average 1.266825052226273) internal successors, (30927), 25243 states have internal predecessors, (30927), 8979 states have call successors, (8979), 2120 states have call predecessors, (8979), 2095 states have return successors, (8999), 8531 states have call predecessors, (8999), 8975 states have call successors, (8999) [2021-11-12 23:11:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35490 states to 35490 states and 48905 transitions. [2021-11-12 23:11:25,688 INFO L78 Accepts]: Start accepts. Automaton has 35490 states and 48905 transitions. Word has length 99 [2021-11-12 23:11:25,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:11:25,689 INFO L470 AbstractCegarLoop]: Abstraction has 35490 states and 48905 transitions. [2021-11-12 23:11:25,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-12 23:11:25,690 INFO L276 IsEmpty]: Start isEmpty. Operand 35490 states and 48905 transitions. [2021-11-12 23:11:25,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-12 23:11:25,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:11:25,706 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:11:25,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-12 23:11:25,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:11:25,921 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:11:25,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:11:25,922 INFO L85 PathProgramCache]: Analyzing trace with hash 836421759, now seen corresponding path program 1 times [2021-11-12 23:11:25,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:11:25,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211040345] [2021-11-12 23:11:25,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:11:25,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:11:25,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:11:25,934 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:11:25,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:11:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:11:38,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 5626 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:11:38,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:11:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2021-11-12 23:11:40,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:11:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2021-11-12 23:11:41,211 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:11:41,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211040345] [2021-11-12 23:11:41,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211040345] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:11:41,212 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:11:41,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-12 23:11:41,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577688269] [2021-11-12 23:11:41,213 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:11:41,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:11:41,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:11:41,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:11:41,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:11:41,215 INFO L87 Difference]: Start difference. First operand 35490 states and 48905 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (33), 4 states have call predecessors, (33), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 23:11:42,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:11:42,996 INFO L93 Difference]: Finished difference Result 35496 states and 48910 transitions. [2021-11-12 23:11:42,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:11:42,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (33), 4 states have call predecessors, (33), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 166 [2021-11-12 23:11:42,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:11:43,207 INFO L225 Difference]: With dead ends: 35496 [2021-11-12 23:11:43,207 INFO L226 Difference]: Without dead ends: 35494 [2021-11-12 23:11:43,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:11:43,230 INFO L933 BasicCegarLoop]: 3290 mSDtfsCounter, 3196 mSDsluCounter, 13135 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3207 SdHoareTripleChecker+Valid, 16425 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 158.92ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 166.66ms IncrementalHoareTripleChecker+Time [2021-11-12 23:11:43,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3207 Valid, 16425 Invalid, 37 Unknown, 0 Unchecked, 158.92ms Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 166.66ms Time] [2021-11-12 23:11:43,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35494 states. [2021-11-12 23:11:45,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35494 to 35494. [2021-11-12 23:11:45,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35494 states, 24416 states have (on average 1.2667922673656618) internal successors, (30930), 25246 states have internal predecessors, (30930), 8979 states have call successors, (8979), 2121 states have call predecessors, (8979), 2096 states have return successors, (8999), 8531 states have call predecessors, (8999), 8975 states have call successors, (8999) [2021-11-12 23:11:45,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35494 states to 35494 states and 48908 transitions. [2021-11-12 23:11:45,828 INFO L78 Accepts]: Start accepts. Automaton has 35494 states and 48908 transitions. Word has length 166 [2021-11-12 23:11:45,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:11:45,831 INFO L470 AbstractCegarLoop]: Abstraction has 35494 states and 48908 transitions. [2021-11-12 23:11:45,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (33), 4 states have call predecessors, (33), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 23:11:45,831 INFO L276 IsEmpty]: Start isEmpty. Operand 35494 states and 48908 transitions. [2021-11-12 23:11:45,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-12 23:11:45,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:11:45,849 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:11:46,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:11:46,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:11:46,065 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:11:46,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:11:46,066 INFO L85 PathProgramCache]: Analyzing trace with hash 449362951, now seen corresponding path program 1 times [2021-11-12 23:11:46,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:11:46,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244630311] [2021-11-12 23:11:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:11:46,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:11:46,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:11:46,083 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:11:46,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:11:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:11:58,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 5633 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:11:58,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:12:00,505 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2021-11-12 23:12:00,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:12:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2021-11-12 23:12:01,440 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:12:01,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244630311] [2021-11-12 23:12:01,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244630311] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:12:01,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:12:01,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:12:01,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645307235] [2021-11-12 23:12:01,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:12:01,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:12:01,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:12:01,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:12:01,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:12:01,442 INFO L87 Difference]: Start difference. First operand 35494 states and 48908 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 23:12:02,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:12:02,872 INFO L93 Difference]: Finished difference Result 35500 states and 48913 transitions. [2021-11-12 23:12:02,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:12:02,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 171 [2021-11-12 23:12:02,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:12:03,066 INFO L225 Difference]: With dead ends: 35500 [2021-11-12 23:12:03,066 INFO L226 Difference]: Without dead ends: 35498 [2021-11-12 23:12:03,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:12:03,087 INFO L933 BasicCegarLoop]: 3293 mSDtfsCounter, 3220 mSDsluCounter, 6567 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3230 SdHoareTripleChecker+Valid, 9860 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.08ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.62ms IncrementalHoareTripleChecker+Time [2021-11-12 23:12:03,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3230 Valid, 9860 Invalid, 20 Unknown, 0 Unchecked, 27.08ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 81.62ms Time] [2021-11-12 23:12:03,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35498 states. [2021-11-12 23:12:05,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35498 to 35498. [2021-11-12 23:12:05,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35498 states, 24419 states have (on average 1.266759490560629) internal successors, (30933), 25249 states have internal predecessors, (30933), 8979 states have call successors, (8979), 2122 states have call predecessors, (8979), 2097 states have return successors, (8999), 8531 states have call predecessors, (8999), 8975 states have call successors, (8999) [2021-11-12 23:12:05,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35498 states to 35498 states and 48911 transitions. [2021-11-12 23:12:05,689 INFO L78 Accepts]: Start accepts. Automaton has 35498 states and 48911 transitions. Word has length 171 [2021-11-12 23:12:05,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:12:05,692 INFO L470 AbstractCegarLoop]: Abstraction has 35498 states and 48911 transitions. [2021-11-12 23:12:05,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 23:12:05,692 INFO L276 IsEmpty]: Start isEmpty. Operand 35498 states and 48911 transitions. [2021-11-12 23:12:05,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-12 23:12:05,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:12:05,707 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:12:05,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:12:05,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:12:05,929 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:12:05,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:12:05,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1338692927, now seen corresponding path program 1 times [2021-11-12 23:12:05,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:12:05,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744246082] [2021-11-12 23:12:05,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:12:05,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:12:05,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:12:05,947 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:12:05,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:12:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:12:17,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 5640 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:12:17,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:12:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-11-12 23:12:18,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:12:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-11-12 23:12:19,943 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:12:19,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744246082] [2021-11-12 23:12:19,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744246082] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:12:19,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:12:19,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:12:19,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489308590] [2021-11-12 23:12:19,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:12:19,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:12:19,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:12:19,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:12:19,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:12:19,946 INFO L87 Difference]: Start difference. First operand 35498 states and 48911 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-12 23:12:21,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:12:21,296 INFO L93 Difference]: Finished difference Result 35504 states and 48916 transitions. [2021-11-12 23:12:21,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:12:21,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 176 [2021-11-12 23:12:21,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:12:21,459 INFO L225 Difference]: With dead ends: 35504 [2021-11-12 23:12:21,459 INFO L226 Difference]: Without dead ends: 35502 [2021-11-12 23:12:21,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:12:21,478 INFO L933 BasicCegarLoop]: 3293 mSDtfsCounter, 3220 mSDsluCounter, 6567 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3229 SdHoareTripleChecker+Valid, 9860 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.97ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.26ms IncrementalHoareTripleChecker+Time [2021-11-12 23:12:21,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3229 Valid, 9860 Invalid, 20 Unknown, 0 Unchecked, 20.97ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 72.26ms Time] [2021-11-12 23:12:21,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35502 states. [2021-11-12 23:12:23,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35502 to 35502. [2021-11-12 23:12:23,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35502 states, 24422 states have (on average 1.2667267218082057) internal successors, (30936), 25252 states have internal predecessors, (30936), 8979 states have call successors, (8979), 2123 states have call predecessors, (8979), 2098 states have return successors, (8999), 8531 states have call predecessors, (8999), 8975 states have call successors, (8999) [2021-11-12 23:12:23,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35502 states to 35502 states and 48914 transitions. [2021-11-12 23:12:23,257 INFO L78 Accepts]: Start accepts. Automaton has 35502 states and 48914 transitions. Word has length 176 [2021-11-12 23:12:23,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:12:23,258 INFO L470 AbstractCegarLoop]: Abstraction has 35502 states and 48914 transitions. [2021-11-12 23:12:23,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-12 23:12:23,258 INFO L276 IsEmpty]: Start isEmpty. Operand 35502 states and 48914 transitions. [2021-11-12 23:12:23,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-12 23:12:23,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:12:23,272 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:12:23,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:12:23,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:12:23,485 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:12:23,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:12:23,486 INFO L85 PathProgramCache]: Analyzing trace with hash -738129333, now seen corresponding path program 1 times [2021-11-12 23:12:23,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:12:23,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033095871] [2021-11-12 23:12:23,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:12:23,501 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:12:23,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:12:23,502 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:12:23,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:12:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:12:34,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 5698 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:12:34,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:12:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-12 23:12:35,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:12:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2021-11-12 23:12:35,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:12:35,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033095871] [2021-11-12 23:12:35,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033095871] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:12:35,562 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:12:35,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:12:35,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661424765] [2021-11-12 23:12:35,563 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:12:35,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:12:35,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:12:35,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:12:35,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:12:35,565 INFO L87 Difference]: Start difference. First operand 35502 states and 48914 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-11-12 23:12:38,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:12:46,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:12:46,310 INFO L93 Difference]: Finished difference Result 71169 states and 97997 transitions. [2021-11-12 23:12:46,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:12:46,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 193 [2021-11-12 23:12:46,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:12:46,521 INFO L225 Difference]: With dead ends: 71169 [2021-11-12 23:12:46,521 INFO L226 Difference]: Without dead ends: 47274 [2021-11-12 23:12:46,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:12:46,799 INFO L933 BasicCegarLoop]: 7000 mSDtfsCounter, 6419 mSDsluCounter, 5806 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8165.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6419 SdHoareTripleChecker+Valid, 12806 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.98ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8908.91ms IncrementalHoareTripleChecker+Time [2021-11-12 23:12:46,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6419 Valid, 12806 Invalid, 1270 Unknown, 0 Unchecked, 30.98ms Time], IncrementalHoareTripleChecker [13 Valid, 1256 Invalid, 1 Unknown, 0 Unchecked, 8908.91ms Time] [2021-11-12 23:12:46,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47274 states. [2021-11-12 23:12:49,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47274 to 47206. [2021-11-12 23:12:49,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47206 states, 32466 states have (on average 1.2651697160105957) internal successors, (41075), 33566 states have internal predecessors, (41075), 11937 states have call successors, (11937), 2833 states have call predecessors, (11937), 2800 states have return successors, (11965), 11346 states have call predecessors, (11965), 11933 states have call successors, (11965) [2021-11-12 23:12:49,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47206 states to 47206 states and 64977 transitions. [2021-11-12 23:12:49,400 INFO L78 Accepts]: Start accepts. Automaton has 47206 states and 64977 transitions. Word has length 193 [2021-11-12 23:12:49,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:12:49,400 INFO L470 AbstractCegarLoop]: Abstraction has 47206 states and 64977 transitions. [2021-11-12 23:12:49,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-11-12 23:12:49,401 INFO L276 IsEmpty]: Start isEmpty. Operand 47206 states and 64977 transitions. [2021-11-12 23:12:49,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-12 23:12:49,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:12:49,417 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:12:49,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-12 23:12:49,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:12:49,633 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:12:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:12:49,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1102632510, now seen corresponding path program 1 times [2021-11-12 23:12:49,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:12:49,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15767272] [2021-11-12 23:12:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:12:49,649 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:12:49,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:12:49,650 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:12:49,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:13:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:00,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 5697 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:13:00,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:13:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-12 23:13:01,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:13:01,805 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2021-11-12 23:13:01,805 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:13:01,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15767272] [2021-11-12 23:13:01,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15767272] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:01,805 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:01,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:13:01,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184645281] [2021-11-12 23:13:01,806 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:01,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:13:01,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:13:01,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:13:01,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:13:01,807 INFO L87 Difference]: Start difference. First operand 47206 states and 64977 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-11-12 23:13:04,559 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:13:16,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:16,442 INFO L93 Difference]: Finished difference Result 106131 states and 146077 transitions. [2021-11-12 23:13:16,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:13:16,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 192 [2021-11-12 23:13:16,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:16,728 INFO L225 Difference]: With dead ends: 106131 [2021-11-12 23:13:16,728 INFO L226 Difference]: Without dead ends: 70532 [2021-11-12 23:13:16,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:13:16,887 INFO L933 BasicCegarLoop]: 6990 mSDtfsCounter, 6395 mSDsluCounter, 5212 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 590 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9969.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6395 SdHoareTripleChecker+Valid, 12202 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.41ms SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10969.79ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:16,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6395 Valid, 12202 Invalid, 1842 Unknown, 0 Unchecked, 35.41ms Time], IncrementalHoareTripleChecker [590 Valid, 1251 Invalid, 1 Unknown, 0 Unchecked, 10969.79ms Time] [2021-11-12 23:13:16,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70532 states. [2021-11-12 23:13:20,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70532 to 70494. [2021-11-12 23:13:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70494 states, 48458 states have (on average 1.2652400016509142) internal successors, (61311), 50098 states have internal predecessors, (61311), 17841 states have call successors, (17841), 4241 states have call predecessors, (17841), 4192 states have return successors, (17885), 16964 states have call predecessors, (17885), 17837 states have call successors, (17885) [2021-11-12 23:13:21,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70494 states to 70494 states and 97037 transitions. [2021-11-12 23:13:21,174 INFO L78 Accepts]: Start accepts. Automaton has 70494 states and 97037 transitions. Word has length 192 [2021-11-12 23:13:21,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:21,175 INFO L470 AbstractCegarLoop]: Abstraction has 70494 states and 97037 transitions. [2021-11-12 23:13:21,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-11-12 23:13:21,175 INFO L276 IsEmpty]: Start isEmpty. Operand 70494 states and 97037 transitions. [2021-11-12 23:13:21,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-12 23:13:21,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:21,189 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:21,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:13:21,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:13:21,413 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:13:21,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:21,414 INFO L85 PathProgramCache]: Analyzing trace with hash -186853689, now seen corresponding path program 1 times [2021-11-12 23:13:21,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:13:21,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848053842] [2021-11-12 23:13:21,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:21,431 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:13:21,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:13:21,432 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:13:21,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:13:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:33,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 5647 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:13:33,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:13:34,811 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2021-11-12 23:13:34,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:13:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2021-11-12 23:13:35,729 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:13:35,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848053842] [2021-11-12 23:13:35,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848053842] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:13:35,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:13:35,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:13:35,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593109571] [2021-11-12 23:13:35,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:35,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:13:35,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:13:35,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:13:35,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:13:35,732 INFO L87 Difference]: Start difference. First operand 70494 states and 97037 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 23:13:38,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:38,673 INFO L93 Difference]: Finished difference Result 70500 states and 97042 transitions. [2021-11-12 23:13:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:13:38,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 181 [2021-11-12 23:13:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:38,925 INFO L225 Difference]: With dead ends: 70500 [2021-11-12 23:13:38,926 INFO L226 Difference]: Without dead ends: 70498 [2021-11-12 23:13:38,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:13:38,952 INFO L933 BasicCegarLoop]: 3293 mSDtfsCounter, 3220 mSDsluCounter, 6567 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3228 SdHoareTripleChecker+Valid, 9860 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.63ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.41ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:38,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3228 Valid, 9860 Invalid, 20 Unknown, 0 Unchecked, 13.63ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 72.41ms Time] [2021-11-12 23:13:39,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70498 states. [2021-11-12 23:13:42,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70498 to 70498. [2021-11-12 23:13:42,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70498 states, 48461 states have (on average 1.265223581849322) internal successors, (61314), 50101 states have internal predecessors, (61314), 17841 states have call successors, (17841), 4242 states have call predecessors, (17841), 4193 states have return successors, (17885), 16964 states have call predecessors, (17885), 17837 states have call successors, (17885) [2021-11-12 23:13:43,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70498 states to 70498 states and 97040 transitions. [2021-11-12 23:13:43,365 INFO L78 Accepts]: Start accepts. Automaton has 70498 states and 97040 transitions. Word has length 181 [2021-11-12 23:13:43,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:43,366 INFO L470 AbstractCegarLoop]: Abstraction has 70498 states and 97040 transitions. [2021-11-12 23:13:43,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 23:13:43,367 INFO L276 IsEmpty]: Start isEmpty. Operand 70498 states and 97040 transitions. [2021-11-12 23:13:43,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-12 23:13:43,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:43,379 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:43,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:13:43,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:13:43,601 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:13:43,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:43,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1209246207, now seen corresponding path program 1 times [2021-11-12 23:13:43,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:13:43,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477598700] [2021-11-12 23:13:43,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:43,611 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:13:43,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:13:43,612 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:13:43,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:13:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:55,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 5654 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:13:55,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:13:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2021-11-12 23:13:56,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:13:57,867 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2021-11-12 23:13:57,867 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:13:57,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477598700] [2021-11-12 23:13:57,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477598700] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:13:57,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:13:57,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:13:57,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837812062] [2021-11-12 23:13:57,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:57,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:13:57,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:13:57,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:13:57,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:13:57,869 INFO L87 Difference]: Start difference. First operand 70498 states and 97040 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-12 23:14:01,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:01,127 INFO L93 Difference]: Finished difference Result 70504 states and 97045 transitions. [2021-11-12 23:14:01,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:14:01,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 186 [2021-11-12 23:14:01,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:01,386 INFO L225 Difference]: With dead ends: 70504 [2021-11-12 23:14:01,386 INFO L226 Difference]: Without dead ends: 70502 [2021-11-12 23:14:01,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:14:01,411 INFO L933 BasicCegarLoop]: 3293 mSDtfsCounter, 3220 mSDsluCounter, 6567 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3227 SdHoareTripleChecker+Valid, 9860 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.88ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.17ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:01,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3227 Valid, 9860 Invalid, 20 Unknown, 0 Unchecked, 13.88ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 68.17ms Time] [2021-11-12 23:14:01,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70502 states. [2021-11-12 23:14:05,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70502 to 70502. [2021-11-12 23:14:05,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70502 states, 48464 states have (on average 1.2652071640805547) internal successors, (61317), 50104 states have internal predecessors, (61317), 17841 states have call successors, (17841), 4243 states have call predecessors, (17841), 4194 states have return successors, (17885), 16964 states have call predecessors, (17885), 17837 states have call successors, (17885) [2021-11-12 23:14:05,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70502 states to 70502 states and 97043 transitions. [2021-11-12 23:14:05,528 INFO L78 Accepts]: Start accepts. Automaton has 70502 states and 97043 transitions. Word has length 186 [2021-11-12 23:14:05,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:05,529 INFO L470 AbstractCegarLoop]: Abstraction has 70502 states and 97043 transitions. [2021-11-12 23:14:05,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-12 23:14:05,529 INFO L276 IsEmpty]: Start isEmpty. Operand 70502 states and 97043 transitions. [2021-11-12 23:14:05,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-12 23:14:05,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:05,539 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:05,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:05,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:05,761 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:14:05,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:05,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1309684103, now seen corresponding path program 1 times [2021-11-12 23:14:05,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:05,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731984217] [2021-11-12 23:14:05,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:05,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:05,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:05,771 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:05,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05646fa3-d982-4bc3-afaf-1a568ea56d9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process