./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/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 bdbaacac7560cb4317515ea94aeb4341c343c1b3a78ea4f9610ad493958cf26e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:11:10,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:11:10,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:11:10,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:11:10,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:11:10,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:11:10,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:11:10,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:11:10,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:11:10,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:11:10,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:11:10,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:11:10,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:11:10,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:11:10,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:11:10,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:11:10,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:11:10,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:11:10,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:11:10,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:11:10,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:11:10,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:11:10,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:11:10,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:11:10,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:11:10,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:11:10,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:11:10,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:11:10,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:11:10,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:11:10,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:11:10,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:11:10,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:11:10,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:11:10,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:11:10,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:11:10,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:11:10,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:11:10,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:11:10,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:11:10,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:11:10,370 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:11:10,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:11:10,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:11:10,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:11:10,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:11:10,405 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:11:10,405 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:11:10,406 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:11:10,406 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:11:10,406 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:11:10,407 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:11:10,407 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:11:10,407 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:11:10,408 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:11:10,408 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:11:10,408 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:11:10,409 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:11:10,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:11:10,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:11:10,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:11:10,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:11:10,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:11:10,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:11:10,412 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:11:10,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:11:10,413 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:11:10,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:11:10,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:11:10,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:11:10,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:11:10,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:11:10,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:11:10,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:11:10,415 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:11:10,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:11:10,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:11:10,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:11:10,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:11:10,417 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdbaacac7560cb4317515ea94aeb4341c343c1b3a78ea4f9610ad493958cf26e [2021-11-12 23:11:10,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:11:10,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:11:10,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:11:10,794 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:11:10,795 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:11:10,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i [2021-11-12 23:11:10,885 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/data/30fe2c9cf/1c729558cf734ebcaf0c3b3b270040dd/FLAG3262ac0f7 [2021-11-12 23:11:12,103 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:11:12,105 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i [2021-11-12 23:11:12,190 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/data/30fe2c9cf/1c729558cf734ebcaf0c3b3b270040dd/FLAG3262ac0f7 [2021-11-12 23:11:12,291 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/data/30fe2c9cf/1c729558cf734ebcaf0c3b3b270040dd [2021-11-12 23:11:12,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:11:12,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:11:12,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:11:12,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:11:12,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:11:12,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:11:12" (1/1) ... [2021-11-12 23:11:12,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15224cc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:11:12, skipping insertion in model container [2021-11-12 23:11:12,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:11:12" (1/1) ... [2021-11-12 23:11:12,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:11:12,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:11:15,033 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 23:11:15,127 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 23:11:15,128 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 23:11:16,685 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387186,387199] [2021-11-12 23:11:16,688 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387355,387368] [2021-11-12 23:11:16,688 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387522,387535] [2021-11-12 23:11:16,689 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387690,387703] [2021-11-12 23:11:16,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:11:16,801 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 23:11:16,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c6b7288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:11:16, skipping insertion in model container [2021-11-12 23:11:16,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:11:16,802 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:11:16,804 INFO L158 Benchmark]: Toolchain (without parser) took 4506.28ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 74.2MB in the beginning and 59.5MB in the end (delta: 14.7MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. [2021-11-12 23:11:16,805 INFO L158 Benchmark]: CDTParser took 0.74ms. Allocated memory is still 109.1MB. Free memory is still 85.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:11:16,806 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4503.30ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 74.2MB in the beginning and 60.1MB in the end (delta: 14.0MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. [2021-11-12 23:11:16,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74ms. Allocated memory is still 109.1MB. Free memory is still 85.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4503.30ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 74.2MB in the beginning and 60.1MB in the end (delta: 14.0MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6978]: 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/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 bdbaacac7560cb4317515ea94aeb4341c343c1b3a78ea4f9610ad493958cf26e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:11:19,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:11:19,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:11:19,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:11:19,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:11:19,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:11:19,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:11:19,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:11:19,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:11:19,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:11:19,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:11:19,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:11:19,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:11:19,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:11:19,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:11:19,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:11:19,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:11:19,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:11:19,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:11:19,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:11:19,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:11:19,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:11:19,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:11:19,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:11:19,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:11:19,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:11:19,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:11:19,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:11:19,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:11:19,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:11:19,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:11:19,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:11:19,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:11:19,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:11:19,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:11:19,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:11:19,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:11:19,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:11:19,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:11:19,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:11:19,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:11:19,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:11:19,266 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:11:19,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:11:19,267 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:11:19,267 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:11:19,267 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:11:19,267 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:11:19,268 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:11:19,268 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:11:19,268 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:11:19,268 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:11:19,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:11:19,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:11:19,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:11:19,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:11:19,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:11:19,270 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:11:19,270 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:11:19,270 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:11:19,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:11:19,271 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:11:19,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:11:19,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:11:19,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:11:19,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:11:19,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:11:19,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:11:19,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:11:19,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:11:19,273 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:11:19,273 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:11:19,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:11:19,273 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:11:19,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:11:19,274 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdbaacac7560cb4317515ea94aeb4341c343c1b3a78ea4f9610ad493958cf26e [2021-11-12 23:11:19,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:11:19,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:11:19,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:11:19,732 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:11:19,732 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:11:19,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i [2021-11-12 23:11:19,815 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/data/e0d61dc07/1ca1ceb849c64e41a42c706daaa29c84/FLAG3df54071f [2021-11-12 23:11:21,022 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:11:21,023 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i [2021-11-12 23:11:21,090 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/data/e0d61dc07/1ca1ceb849c64e41a42c706daaa29c84/FLAG3df54071f [2021-11-12 23:11:21,234 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/data/e0d61dc07/1ca1ceb849c64e41a42c706daaa29c84 [2021-11-12 23:11:21,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:11:21,237 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:11:21,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:11:21,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:11:21,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:11:21,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:11:21" (1/1) ... [2021-11-12 23:11:21,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42b8423c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:11:21, skipping insertion in model container [2021-11-12 23:11:21,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:11:21" (1/1) ... [2021-11-12 23:11:21,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:11:21,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:11:25,326 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387186,387199] [2021-11-12 23:11:25,329 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387355,387368] [2021-11-12 23:11:25,330 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387522,387535] [2021-11-12 23:11:25,330 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387690,387703] [2021-11-12 23:11:25,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:11:25,483 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:11:25,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:11:26,091 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387186,387199] [2021-11-12 23:11:26,092 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387355,387368] [2021-11-12 23:11:26,092 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387522,387535] [2021-11-12 23:11:26,093 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387690,387703] [2021-11-12 23:11:26,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:11:26,142 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:11:26,626 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387186,387199] [2021-11-12 23:11:26,626 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387355,387368] [2021-11-12 23:11:26,627 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387522,387535] [2021-11-12 23:11:26,627 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_36d6fd14-d731-4f6c-afb5-b079373b4aa9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387690,387703] [2021-11-12 23:11:26,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:11:27,094 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:11:27,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:11:27 WrapperNode [2021-11-12 23:11:27,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:11:27,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:11:27,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:11:27,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:11:27,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:11:27" (1/1) ... [2021-11-12 23:11:27,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:11:27" (1/1) ... [2021-11-12 23:11:27,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:11:27,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:11:27,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:11:27,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:11:27,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:11:27" (1/1) ... [2021-11-12 23:11:27,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:11:27" (1/1) ... [2021-11-12 23:11:27,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:11:27" (1/1) ... [2021-11-12 23:11:27,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:11:27" (1/1) ... [2021-11-12 23:11:27,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:11:27" (1/1) ... [2021-11-12 23:11:27,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:11:27" (1/1) ... [2021-11-12 23:11:27,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:11:27" (1/1) ... [2021-11-12 23:11:27,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:11:27,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:11:27,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:11:27,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:11:27,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:11:27" (1/1) ... [2021-11-12 23:11:27,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:11:27,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:11:27,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:11:27,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:11:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure mii_check_media [2021-11-12 23:11:27,916 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_check_media [2021-11-12 23:11:27,916 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-12 23:11:27,916 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-12 23:11:27,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 23:11:27,916 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 23:11:27,917 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-12 23:11:27,917 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-12 23:11:27,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:11:27,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:11:27,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_78 [2021-11-12 23:11:27,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_78 [2021-11-12 23:11:27,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 23:11:27,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 23:11:27,918 INFO L130 BoogieDeclarations]: Found specification of procedure cp_poll_controller [2021-11-12 23:11:27,918 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_poll_controller [2021-11-12 23:11:27,918 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-12 23:11:27,919 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-12 23:11:27,919 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-12 23:11:27,919 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-12 23:11:27,919 INFO L130 BoogieDeclarations]: Found specification of procedure cp_init_rings [2021-11-12 23:11:27,919 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_init_rings [2021-11-12 23:11:27,919 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-12 23:11:27,920 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-12 23:11:27,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 23:11:27,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 23:11:27,920 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-12 23:11:27,920 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-12 23:11:27,921 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-12 23:11:27,921 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-12 23:11:27,921 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-12 23:11:27,921 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-12 23:11:27,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 23:11:27,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 23:11:27,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:11:27,922 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-12 23:11:27,922 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-12 23:11:27,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:11:27,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:11:27,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:11:27,923 INFO L130 BoogieDeclarations]: Found specification of procedure cp_set_rxbufsize [2021-11-12 23:11:27,923 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_set_rxbufsize [2021-11-12 23:11:27,923 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_cmd [2021-11-12 23:11:27,923 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_cmd [2021-11-12 23:11:27,923 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-12 23:11:27,924 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-12 23:11:27,924 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-12 23:11:27,924 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-12 23:11:27,924 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-12 23:11:27,924 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-12 23:11:27,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_109 [2021-11-12 23:11:27,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_109 [2021-11-12 23:11:27,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 23:11:27,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 23:11:27,925 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-12 23:11:27,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-12 23:11:27,926 INFO L130 BoogieDeclarations]: Found specification of procedure cp_init_rings_index [2021-11-12 23:11:27,926 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_init_rings_index [2021-11-12 23:11:27,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 23:11:27,926 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 23:11:27,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-12 23:11:27,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-12 23:11:27,927 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-12 23:11:27,927 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-12 23:11:27,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-12 23:11:27,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-12 23:11:27,927 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-12 23:11:27,928 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-12 23:11:27,928 INFO L130 BoogieDeclarations]: Found specification of procedure cp_set_rx_mode [2021-11-12 23:11:27,928 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_set_rx_mode [2021-11-12 23:11:27,928 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-12 23:11:27,928 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-12 23:11:27,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 23:11:27,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 23:11:27,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:11:27,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_cp_private [2021-11-12 23:11:27,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_cp_private [2021-11-12 23:11:27,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-12 23:11:27,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-12 23:11:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-12 23:11:27,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-12 23:11:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-12 23:11:27,930 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-12 23:11:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 23:11:27,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 23:11:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:11:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure write_eeprom [2021-11-12 23:11:27,931 INFO L138 BoogieDeclarations]: Found implementation of procedure write_eeprom [2021-11-12 23:11:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 23:11:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 23:11:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:11:27,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:11:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 23:11:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-12 23:11:27,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-12 23:11:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-12 23:11:27,933 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-12 23:11:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 23:11:27,933 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 23:11:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure cp_get_regs_len [2021-11-12 23:11:27,933 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_get_regs_len [2021-11-12 23:11:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-12 23:11:27,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-12 23:11:27,934 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-12 23:11:27,934 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-12 23:11:27,934 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-12 23:11:27,934 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-12 23:11:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-12 23:11:27,935 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-12 23:11:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure cp_start_hw [2021-11-12 23:11:27,935 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_start_hw [2021-11-12 23:11:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 23:11:27,936 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-11-12 23:11:27,936 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-11-12 23:11:27,936 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-12 23:11:27,936 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-12 23:11:27,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:11:27,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:11:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure cp_free_rings [2021-11-12 23:11:27,937 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_free_rings [2021-11-12 23:11:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:11:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure cp_stop_hw [2021-11-12 23:11:27,937 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_stop_hw [2021-11-12 23:11:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:11:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:11:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 23:11:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:11:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:11:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 23:11:27,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 23:11:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure cp_get_eeprom_len [2021-11-12 23:11:27,939 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_get_eeprom_len [2021-11-12 23:11:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 23:11:27,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 23:11:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-12 23:11:27,939 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-12 23:11:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_reset_queue [2021-11-12 23:11:27,940 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_reset_queue [2021-11-12 23:11:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure cp_nway_reset [2021-11-12 23:11:27,940 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_nway_reset [2021-11-12 23:11:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-12 23:11:27,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-12 23:11:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:11:27,941 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:11:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-12 23:11:27,941 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-12 23:11:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-12 23:11:27,941 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-12 23:11:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2021-11-12 23:11:27,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2021-11-12 23:11:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-12 23:11:27,942 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-12 23:11:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure cp_resume [2021-11-12 23:11:27,942 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_resume [2021-11-12 23:11:27,943 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-12 23:11:27,943 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-12 23:11:27,943 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2021-11-12 23:11:27,943 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2021-11-12 23:11:27,943 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-12 23:11:27,944 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-12 23:11:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:11:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-12 23:11:27,944 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-12 23:11:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:11:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure cp_enable_irq [2021-11-12 23:11:27,945 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_enable_irq [2021-11-12 23:11:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-12 23:11:27,945 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-12 23:11:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_cp_private [2021-11-12 23:11:27,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_cp_private [2021-11-12 23:11:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:11:27,946 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2021-11-12 23:11:27,946 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2021-11-12 23:11:27,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:11:27,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:11:27,946 INFO L130 BoogieDeclarations]: Found specification of procedure __cp_set_rx_mode [2021-11-12 23:11:27,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __cp_set_rx_mode [2021-11-12 23:11:27,947 INFO L130 BoogieDeclarations]: Found specification of procedure cp_clean_rings [2021-11-12 23:11:27,947 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_clean_rings [2021-11-12 23:11:27,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:11:27,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:11:27,947 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-12 23:11:27,947 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-12 23:11:27,947 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-12 23:11:27,948 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-12 23:11:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-12 23:11:27,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-12 23:11:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-12 23:11:27,948 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-12 23:11:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 23:11:27,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 23:11:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_cmd_end [2021-11-12 23:11:27,949 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_cmd_end [2021-11-12 23:11:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_108 [2021-11-12 23:11:27,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_108 [2021-11-12 23:11:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-12 23:11:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-12 23:11:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-12 23:11:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-12 23:11:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-12 23:11:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-12 23:11:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure cp_close [2021-11-12 23:11:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_close [2021-11-12 23:11:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-12 23:11:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-12 23:11:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure cp_open [2021-11-12 23:11:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_open [2021-11-12 23:11:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 23:11:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 23:11:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 23:11:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 23:11:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:11:27,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:11:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure cp_tx_timeout [2021-11-12 23:11:27,953 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_tx_timeout [2021-11-12 23:11:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-12 23:11:27,953 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-12 23:11:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_cmd_start [2021-11-12 23:11:27,953 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_cmd_start [2021-11-12 23:11:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 23:11:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 23:11:27,954 INFO L130 BoogieDeclarations]: Found specification of procedure cp_init_hw [2021-11-12 23:11:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_init_hw [2021-11-12 23:11:27,954 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2021-11-12 23:11:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2021-11-12 23:11:27,954 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_extend_cmd [2021-11-12 23:11:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_extend_cmd [2021-11-12 23:11:27,955 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-12 23:11:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-12 23:11:27,955 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-12 23:11:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-12 23:11:27,955 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-12 23:11:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-12 23:11:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-12 23:11:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-12 23:11:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure cp_interrupt [2021-11-12 23:11:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_interrupt [2021-11-12 23:11:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 23:11:27,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 23:11:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2021-11-12 23:11:27,957 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2021-11-12 23:11:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure cp_remove_one [2021-11-12 23:11:27,957 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_remove_one [2021-11-12 23:11:30,325 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:13:19,826 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 23:13:20,106 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:13:20,106 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:13:20,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:13:20 BoogieIcfgContainer [2021-11-12 23:13:20,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:13:20,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:13:20,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:13:20,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:13:20,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:11:21" (1/3) ... [2021-11-12 23:13:20,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d36b3ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:13:20, skipping insertion in model container [2021-11-12 23:13:20,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:11:27" (2/3) ... [2021-11-12 23:13:20,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d36b3ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:13:20, skipping insertion in model container [2021-11-12 23:13:20,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:13:20" (3/3) ... [2021-11-12 23:13:20,122 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i [2021-11-12 23:13:20,130 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:13:20,130 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-12 23:13:20,222 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:13:20,231 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 23:13:20,231 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 23:13:20,315 INFO L276 IsEmpty]: Start isEmpty. Operand has 2021 states, 1350 states have (on average 1.24) internal successors, (1674), 1373 states have internal predecessors, (1674), 562 states have call successors, (562), 107 states have call predecessors, (562), 106 states have return successors, (557), 553 states have call predecessors, (557), 557 states have call successors, (557) [2021-11-12 23:13:20,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-12 23:13:20,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:20,352 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:20,352 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:13:20,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:20,359 INFO L85 PathProgramCache]: Analyzing trace with hash -392823862, now seen corresponding path program 1 times [2021-11-12 23:13:20,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:13:20,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859917204] [2021-11-12 23:13:20,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:20,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:13:20,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:13:20,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:13:20,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:13:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:23,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:13:23,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:13:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1080 trivial. 0 not checked. [2021-11-12 23:13:23,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:13:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2021-11-12 23:13:24,597 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:13:24,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859917204] [2021-11-12 23:13:24,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859917204] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:24,598 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:24,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:13:24,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448796004] [2021-11-12 23:13:24,602 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:24,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:13:24,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:13:24,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:13:24,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:13:24,661 INFO L87 Difference]: Start difference. First operand has 2021 states, 1350 states have (on average 1.24) internal successors, (1674), 1373 states have internal predecessors, (1674), 562 states have call successors, (562), 107 states have call predecessors, (562), 106 states have return successors, (557), 553 states have call predecessors, (557), 557 states have call successors, (557) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-12 23:13:26,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:13:36,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:36,158 INFO L93 Difference]: Finished difference Result 7850 states and 11126 transitions. [2021-11-12 23:13:36,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:13:36,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 200 [2021-11-12 23:13:36,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:36,243 INFO L225 Difference]: With dead ends: 7850 [2021-11-12 23:13:36,243 INFO L226 Difference]: Without dead ends: 5846 [2021-11-12 23:13:36,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 396 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 23:13:36,274 INFO L933 BasicCegarLoop]: 3854 mSDtfsCounter, 6973 mSDsluCounter, 4296 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 1045 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9493.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6973 SdHoareTripleChecker+Valid, 8150 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 84.23ms SdHoareTripleChecker+Time, 1045 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10741.88ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:36,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6973 Valid, 8150 Invalid, 2161 Unknown, 0 Unchecked, 84.23ms Time], IncrementalHoareTripleChecker [1045 Valid, 1115 Invalid, 1 Unknown, 0 Unchecked, 10741.88ms Time] [2021-11-12 23:13:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2021-11-12 23:13:36,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 5817. [2021-11-12 23:13:36,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5817 states, 3918 states have (on average 1.2322613578356305) internal successors, (4828), 3982 states have internal predecessors, (4828), 1583 states have call successors, (1583), 314 states have call predecessors, (1583), 313 states have return successors, (1580), 1568 states have call predecessors, (1580), 1580 states have call successors, (1580) [2021-11-12 23:13:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5817 states to 5817 states and 7991 transitions. [2021-11-12 23:13:36,873 INFO L78 Accepts]: Start accepts. Automaton has 5817 states and 7991 transitions. Word has length 200 [2021-11-12 23:13:36,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:36,875 INFO L470 AbstractCegarLoop]: Abstraction has 5817 states and 7991 transitions. [2021-11-12 23:13:36,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-12 23:13:36,876 INFO L276 IsEmpty]: Start isEmpty. Operand 5817 states and 7991 transitions. [2021-11-12 23:13:36,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-12 23:13:36,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:36,884 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:36,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:13:37,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:13:37,107 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:13:37,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:37,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1161536545, now seen corresponding path program 1 times [2021-11-12 23:13:37,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:13:37,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526255498] [2021-11-12 23:13:37,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:37,121 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:13:37,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:13:37,122 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:13:37,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:13:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:39,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:13:39,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:13:40,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1080 trivial. 0 not checked. [2021-11-12 23:13:40,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:13:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2021-11-12 23:13:41,145 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:13:41,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526255498] [2021-11-12 23:13:41,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526255498] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:41,145 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:41,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:13:41,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436305323] [2021-11-12 23:13:41,148 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:41,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:13:41,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:13:41,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:13:41,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:13:41,153 INFO L87 Difference]: Start difference. First operand 5817 states and 7991 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-12 23:13:43,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:13:53,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:53,179 INFO L93 Difference]: Finished difference Result 22830 states and 31400 transitions. [2021-11-12 23:13:53,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:13:53,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 212 [2021-11-12 23:13:53,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:53,359 INFO L225 Difference]: With dead ends: 22830 [2021-11-12 23:13:53,359 INFO L226 Difference]: Without dead ends: 17050 [2021-11-12 23:13:53,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 420 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 23:13:53,398 INFO L933 BasicCegarLoop]: 3828 mSDtfsCounter, 6943 mSDsluCounter, 4240 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 1097 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9757.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6943 SdHoareTripleChecker+Valid, 8068 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.57ms SdHoareTripleChecker+Time, 1097 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10901.31ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:53,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6943 Valid, 8068 Invalid, 2200 Unknown, 0 Unchecked, 58.57ms Time], IncrementalHoareTripleChecker [1097 Valid, 1102 Invalid, 1 Unknown, 0 Unchecked, 10901.31ms Time] [2021-11-12 23:13:53,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17050 states. [2021-11-12 23:13:54,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17050 to 16970. [2021-11-12 23:13:54,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16970 states, 11449 states have (on average 1.2351297056511485) internal successors, (14141), 11658 states have internal predecessors, (14141), 4593 states have call successors, (4593), 938 states have call predecessors, (4593), 925 states have return successors, (4611), 4517 states have call predecessors, (4611), 4590 states have call successors, (4611) [2021-11-12 23:13:54,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16970 states to 16970 states and 23345 transitions. [2021-11-12 23:13:54,906 INFO L78 Accepts]: Start accepts. Automaton has 16970 states and 23345 transitions. Word has length 212 [2021-11-12 23:13:54,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:54,909 INFO L470 AbstractCegarLoop]: Abstraction has 16970 states and 23345 transitions. [2021-11-12 23:13:54,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-12 23:13:54,913 INFO L276 IsEmpty]: Start isEmpty. Operand 16970 states and 23345 transitions. [2021-11-12 23:13:54,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-12 23:13:54,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:54,927 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:54,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:13:55,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:13:55,153 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 23:13:55,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:55,154 INFO L85 PathProgramCache]: Analyzing trace with hash -967961670, now seen corresponding path program 1 times [2021-11-12 23:13:55,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:13:55,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456889640] [2021-11-12 23:13:55,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:55,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:13:55,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:13:55,158 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:13:55,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:13:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:57,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 1706 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:13:57,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:13:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1080 trivial. 0 not checked. [2021-11-12 23:13:58,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:13:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2021-11-12 23:13:58,847 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:13:58,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456889640] [2021-11-12 23:13:58,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456889640] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:58,848 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:58,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:13:58,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763668542] [2021-11-12 23:13:58,848 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:58,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:13:58,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:13:58,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:13:58,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:13:58,850 INFO L87 Difference]: Start difference. First operand 16970 states and 23345 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-12 23:14:01,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:14:02,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:02,727 INFO L93 Difference]: Finished difference Result 45112 states and 61559 transitions. [2021-11-12 23:14:02,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:14:02,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 212 [2021-11-12 23:14:02,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:02,935 INFO L225 Difference]: With dead ends: 45112 [2021-11-12 23:14:02,935 INFO L226 Difference]: Without dead ends: 28179 [2021-11-12 23:14:03,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 421 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 23:14:03,035 INFO L933 BasicCegarLoop]: 3134 mSDtfsCounter, 1765 mSDsluCounter, 2634 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2536.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 5768 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.74ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2631.89ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:03,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1765 Valid, 5768 Invalid, 107 Unknown, 0 Unchecked, 18.74ms Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 1 Unknown, 0 Unchecked, 2631.89ms Time] [2021-11-12 23:14:03,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28179 states. [2021-11-12 23:14:04,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28179 to 28133. [2021-11-12 23:14:04,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28133 states, 18760 states have (on average 1.2215351812366737) internal successors, (22916), 19140 states have internal predecessors, (22916), 7605 states have call successors, (7605), 1793 states have call predecessors, (7605), 1765 states have return successors, (7644), 7442 states have call predecessors, (7644), 7602 states have call successors, (7644) [2021-11-12 23:14:05,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28133 states to 28133 states and 38165 transitions. [2021-11-12 23:14:05,024 INFO L78 Accepts]: Start accepts. Automaton has 28133 states and 38165 transitions. Word has length 212 [2021-11-12 23:14:05,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:05,026 INFO L470 AbstractCegarLoop]: Abstraction has 28133 states and 38165 transitions. [2021-11-12 23:14:05,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-12 23:14:05,027 INFO L276 IsEmpty]: Start isEmpty. Operand 28133 states and 38165 transitions. [2021-11-12 23:14:05,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-12 23:14:05,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:05,032 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:14:05,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:05,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:05,247 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:14:05,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:05,248 INFO L85 PathProgramCache]: Analyzing trace with hash 93871240, now seen corresponding path program 1 times [2021-11-12 23:14:05,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:05,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802436564] [2021-11-12 23:14:05,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:05,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:05,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:05,256 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:05,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:14:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:08,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 1747 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:14:08,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:08,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1080 trivial. 0 not checked. [2021-11-12 23:14:08,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:09,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2021-11-12 23:14:09,432 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:09,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802436564] [2021-11-12 23:14:09,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802436564] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:09,432 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:09,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:14:09,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064102114] [2021-11-12 23:14:09,433 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:09,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:14:09,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:09,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:14:09,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:14:09,434 INFO L87 Difference]: Start difference. First operand 28133 states and 38165 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-12 23:14:11,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:14:19,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:19,378 INFO L93 Difference]: Finished difference Result 68574 states and 92735 transitions. [2021-11-12 23:14:19,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:14:19,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 213 [2021-11-12 23:14:19,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:19,767 INFO L225 Difference]: With dead ends: 68574 [2021-11-12 23:14:19,767 INFO L226 Difference]: Without dead ends: 40478 [2021-11-12 23:14:19,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 422 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 23:14:19,864 INFO L933 BasicCegarLoop]: 5273 mSDtfsCounter, 4800 mSDsluCounter, 4755 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7602.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4800 SdHoareTripleChecker+Valid, 10028 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.60ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8306.36ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:19,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4800 Valid, 10028 Invalid, 1196 Unknown, 0 Unchecked, 42.60ms Time], IncrementalHoareTripleChecker [40 Valid, 1155 Invalid, 1 Unknown, 0 Unchecked, 8306.36ms Time] [2021-11-12 23:14:19,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40478 states. [2021-11-12 23:14:21,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40478 to 40412. [2021-11-12 23:14:22,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40412 states, 27270 states have (on average 1.2178217821782178) internal successors, (33210), 27740 states have internal predecessors, (33210), 10538 states have call successors, (10538), 2638 states have call predecessors, (10538), 2601 states have return successors, (10567), 10363 states have call predecessors, (10567), 10535 states have call successors, (10567) [2021-11-12 23:14:22,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40412 states to 40412 states and 54315 transitions. [2021-11-12 23:14:22,239 INFO L78 Accepts]: Start accepts. Automaton has 40412 states and 54315 transitions. Word has length 213 [2021-11-12 23:14:22,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:22,240 INFO L470 AbstractCegarLoop]: Abstraction has 40412 states and 54315 transitions. [2021-11-12 23:14:22,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-12 23:14:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 40412 states and 54315 transitions. [2021-11-12 23:14:22,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-12 23:14:22,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:22,246 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 16, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:22,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-12 23:14:22,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:22,469 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 23:14:22,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:22,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1159580521, now seen corresponding path program 1 times [2021-11-12 23:14:22,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:22,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24612416] [2021-11-12 23:14:22,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:22,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:22,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:22,472 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:22,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:14:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:25,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:14:25,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2021-11-12 23:14:26,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2021-11-12 23:14:27,708 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:27,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24612416] [2021-11-12 23:14:27,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24612416] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:27,709 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:27,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-12 23:14:27,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94192304] [2021-11-12 23:14:27,710 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:27,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:14:27,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:27,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:14:27,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:14:27,713 INFO L87 Difference]: Start difference. First operand 40412 states and 54315 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (53), 4 states have call predecessors, (53), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-12 23:14:29,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:29,797 INFO L93 Difference]: Finished difference Result 40418 states and 54320 transitions. [2021-11-12 23:14:29,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:14:29,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (53), 4 states have call predecessors, (53), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 252 [2021-11-12 23:14:29,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:30,009 INFO L225 Difference]: With dead ends: 40418 [2021-11-12 23:14:30,009 INFO L226 Difference]: Without dead ends: 40416 [2021-11-12 23:14:30,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:14:30,027 INFO L933 BasicCegarLoop]: 2757 mSDtfsCounter, 2652 mSDsluCounter, 8242 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 134.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2666 SdHoareTripleChecker+Valid, 10999 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.83ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 143.03ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:30,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2666 Valid, 10999 Invalid, 40 Unknown, 0 Unchecked, 44.83ms Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 143.03ms Time] [2021-11-12 23:14:30,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40416 states. [2021-11-12 23:14:31,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40416 to 40416. [2021-11-12 23:14:31,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40416 states, 27273 states have (on average 1.2177978220217798) internal successors, (33213), 27743 states have internal predecessors, (33213), 10538 states have call successors, (10538), 2639 states have call predecessors, (10538), 2602 states have return successors, (10567), 10363 states have call predecessors, (10567), 10535 states have call successors, (10567) [2021-11-12 23:14:32,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40416 states to 40416 states and 54318 transitions. [2021-11-12 23:14:32,275 INFO L78 Accepts]: Start accepts. Automaton has 40416 states and 54318 transitions. Word has length 252 [2021-11-12 23:14:32,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:32,276 INFO L470 AbstractCegarLoop]: Abstraction has 40416 states and 54318 transitions. [2021-11-12 23:14:32,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (53), 4 states have call predecessors, (53), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-12 23:14:32,277 INFO L276 IsEmpty]: Start isEmpty. Operand 40416 states and 54318 transitions. [2021-11-12 23:14:32,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-12 23:14:32,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:32,285 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 16, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:32,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:32,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:32,509 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 23:14:32,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:32,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1284416519, now seen corresponding path program 1 times [2021-11-12 23:14:32,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:32,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820261810] [2021-11-12 23:14:32,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:32,513 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:32,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:32,516 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:32,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:14:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:35,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:14:35,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:36,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2021-11-12 23:14:36,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2021-11-12 23:14:37,778 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:37,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820261810] [2021-11-12 23:14:37,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820261810] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:14:37,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:14:37,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:14:37,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330255567] [2021-11-12 23:14:37,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:37,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:14:37,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:37,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:14:37,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:14:37,780 INFO L87 Difference]: Start difference. First operand 40416 states and 54318 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-12 23:14:39,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:39,487 INFO L93 Difference]: Finished difference Result 40422 states and 54323 transitions. [2021-11-12 23:14:39,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:14:39,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 257 [2021-11-12 23:14:39,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:39,719 INFO L225 Difference]: With dead ends: 40422 [2021-11-12 23:14:39,719 INFO L226 Difference]: Without dead ends: 40420 [2021-11-12 23:14:39,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 507 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 23:14:39,742 INFO L933 BasicCegarLoop]: 2760 mSDtfsCounter, 2684 mSDsluCounter, 5498 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2697 SdHoareTripleChecker+Valid, 8258 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.00ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:39,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2697 Valid, 8258 Invalid, 23 Unknown, 0 Unchecked, 20.00ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 83.50ms Time] [2021-11-12 23:14:39,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40420 states. [2021-11-12 23:14:41,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40420 to 40420. [2021-11-12 23:14:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40420 states, 27276 states have (on average 1.2177738671359437) internal successors, (33216), 27746 states have internal predecessors, (33216), 10538 states have call successors, (10538), 2640 states have call predecessors, (10538), 2603 states have return successors, (10567), 10363 states have call predecessors, (10567), 10535 states have call successors, (10567) [2021-11-12 23:14:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40420 states to 40420 states and 54321 transitions. [2021-11-12 23:14:42,140 INFO L78 Accepts]: Start accepts. Automaton has 40420 states and 54321 transitions. Word has length 257 [2021-11-12 23:14:42,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:42,141 INFO L470 AbstractCegarLoop]: Abstraction has 40420 states and 54321 transitions. [2021-11-12 23:14:42,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-12 23:14:42,142 INFO L276 IsEmpty]: Start isEmpty. Operand 40420 states and 54321 transitions. [2021-11-12 23:14:42,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-12 23:14:42,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:42,147 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 16, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:42,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:42,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:42,373 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 23:14:42,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:42,373 INFO L85 PathProgramCache]: Analyzing trace with hash 260797015, now seen corresponding path program 1 times [2021-11-12 23:14:42,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:42,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4693588] [2021-11-12 23:14:42,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:42,377 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:42,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:42,378 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:42,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:14:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:45,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 1806 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:14:45,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:46,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2021-11-12 23:14:46,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:47,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2021-11-12 23:14:47,711 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:47,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4693588] [2021-11-12 23:14:47,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4693588] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:14:47,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:14:47,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:14:47,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278307142] [2021-11-12 23:14:47,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:47,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:14:47,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:47,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:14:47,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:14:47,713 INFO L87 Difference]: Start difference. First operand 40420 states and 54321 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-12 23:14:49,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:49,367 INFO L93 Difference]: Finished difference Result 40426 states and 54326 transitions. [2021-11-12 23:14:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:14:49,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 262 [2021-11-12 23:14:49,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:49,550 INFO L225 Difference]: With dead ends: 40426 [2021-11-12 23:14:49,550 INFO L226 Difference]: Without dead ends: 40424 [2021-11-12 23:14:49,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 517 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 23:14:49,572 INFO L933 BasicCegarLoop]: 2760 mSDtfsCounter, 2684 mSDsluCounter, 5498 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2696 SdHoareTripleChecker+Valid, 8258 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.87ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.23ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:49,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2696 Valid, 8258 Invalid, 23 Unknown, 0 Unchecked, 25.87ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 86.23ms Time] [2021-11-12 23:14:49,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40424 states. [2021-11-12 23:14:51,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40424 to 40424. [2021-11-12 23:14:51,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40424 states, 27279 states have (on average 1.2177499175189705) internal successors, (33219), 27749 states have internal predecessors, (33219), 10538 states have call successors, (10538), 2641 states have call predecessors, (10538), 2604 states have return successors, (10567), 10363 states have call predecessors, (10567), 10535 states have call successors, (10567) [2021-11-12 23:14:52,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40424 states to 40424 states and 54324 transitions. [2021-11-12 23:14:52,212 INFO L78 Accepts]: Start accepts. Automaton has 40424 states and 54324 transitions. Word has length 262 [2021-11-12 23:14:52,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:52,214 INFO L470 AbstractCegarLoop]: Abstraction has 40424 states and 54324 transitions. [2021-11-12 23:14:52,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-12 23:14:52,214 INFO L276 IsEmpty]: Start isEmpty. Operand 40424 states and 54324 transitions. [2021-11-12 23:14:52,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-12 23:14:52,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:52,218 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 16, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:52,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:52,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:52,437 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 23:14:52,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:52,437 INFO L85 PathProgramCache]: Analyzing trace with hash -654299705, now seen corresponding path program 1 times [2021-11-12 23:14:52,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:52,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081118034] [2021-11-12 23:14:52,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:52,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:52,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:52,444 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:52,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:14:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:55,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 1813 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:14:55,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1338 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2021-11-12 23:14:56,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1338 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2021-11-12 23:14:57,731 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:57,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081118034] [2021-11-12 23:14:57,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081118034] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:14:57,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:14:57,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:14:57,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316691865] [2021-11-12 23:14:57,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:57,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:14:57,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:57,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:14:57,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:14:57,734 INFO L87 Difference]: Start difference. First operand 40424 states and 54324 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-12 23:14:59,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:59,505 INFO L93 Difference]: Finished difference Result 40430 states and 54329 transitions. [2021-11-12 23:14:59,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:14:59,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 267 [2021-11-12 23:14:59,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:59,690 INFO L225 Difference]: With dead ends: 40430 [2021-11-12 23:14:59,690 INFO L226 Difference]: Without dead ends: 40428 [2021-11-12 23:14:59,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 527 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 23:14:59,710 INFO L933 BasicCegarLoop]: 2760 mSDtfsCounter, 2684 mSDsluCounter, 5498 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2695 SdHoareTripleChecker+Valid, 8258 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.25ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.87ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:59,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2695 Valid, 8258 Invalid, 23 Unknown, 0 Unchecked, 17.25ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 76.87ms Time] [2021-11-12 23:14:59,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40428 states. [2021-11-12 23:15:02,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40428 to 40428. [2021-11-12 23:15:02,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40428 states, 27282 states have (on average 1.2177259731691226) internal successors, (33222), 27752 states have internal predecessors, (33222), 10538 states have call successors, (10538), 2642 states have call predecessors, (10538), 2605 states have return successors, (10567), 10363 states have call predecessors, (10567), 10535 states have call successors, (10567) [2021-11-12 23:15:02,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40428 states to 40428 states and 54327 transitions. [2021-11-12 23:15:02,417 INFO L78 Accepts]: Start accepts. Automaton has 40428 states and 54327 transitions. Word has length 267 [2021-11-12 23:15:02,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:02,418 INFO L470 AbstractCegarLoop]: Abstraction has 40428 states and 54327 transitions. [2021-11-12 23:15:02,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-12 23:15:02,418 INFO L276 IsEmpty]: Start isEmpty. Operand 40428 states and 54327 transitions. [2021-11-12 23:15:02,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-12 23:15:02,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:02,423 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 16, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:15:02,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:02,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:15:02,641 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 23:15:02,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:02,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1316737001, now seen corresponding path program 1 times [2021-11-12 23:15:02,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:15:02,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280422405] [2021-11-12 23:15:02,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:02,644 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:15:02,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:15:02,645 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:15:02,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:15:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:05,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 1820 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:15:05,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1344 trivial. 0 not checked. [2021-11-12 23:15:07,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:08,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1344 trivial. 0 not checked. [2021-11-12 23:15:08,229 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:15:08,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280422405] [2021-11-12 23:15:08,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280422405] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:15:08,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:15:08,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:15:08,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794839651] [2021-11-12 23:15:08,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:15:08,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:15:08,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:15:08,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:15:08,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:15:08,233 INFO L87 Difference]: Start difference. First operand 40428 states and 54327 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-12 23:15:10,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:15:10,302 INFO L93 Difference]: Finished difference Result 40434 states and 54332 transitions. [2021-11-12 23:15:10,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:15:10,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 272 [2021-11-12 23:15:10,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:15:10,439 INFO L225 Difference]: With dead ends: 40434 [2021-11-12 23:15:10,439 INFO L226 Difference]: Without dead ends: 40432 [2021-11-12 23:15:10,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 537 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 23:15:10,457 INFO L933 BasicCegarLoop]: 2760 mSDtfsCounter, 2684 mSDsluCounter, 5498 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 8258 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.51ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.77ms IncrementalHoareTripleChecker+Time [2021-11-12 23:15:10,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2694 Valid, 8258 Invalid, 23 Unknown, 0 Unchecked, 16.51ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 67.77ms Time] [2021-11-12 23:15:10,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40432 states. [2021-11-12 23:15:12,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40432 to 40432. [2021-11-12 23:15:12,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40432 states, 27285 states have (on average 1.2177020340846618) internal successors, (33225), 27755 states have internal predecessors, (33225), 10538 states have call successors, (10538), 2643 states have call predecessors, (10538), 2606 states have return successors, (10567), 10363 states have call predecessors, (10567), 10535 states have call successors, (10567) [2021-11-12 23:15:12,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40432 states to 40432 states and 54330 transitions. [2021-11-12 23:15:12,890 INFO L78 Accepts]: Start accepts. Automaton has 40432 states and 54330 transitions. Word has length 272 [2021-11-12 23:15:12,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:12,891 INFO L470 AbstractCegarLoop]: Abstraction has 40432 states and 54330 transitions. [2021-11-12 23:15:12,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-12 23:15:12,891 INFO L276 IsEmpty]: Start isEmpty. Operand 40432 states and 54330 transitions. [2021-11-12 23:15:12,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-11-12 23:15:12,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:12,895 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 16, 6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:15:12,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-12 23:15:13,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:15:13,096 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 23:15:13,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:13,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2110928775, now seen corresponding path program 1 times [2021-11-12 23:15:13,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:15:13,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624194078] [2021-11-12 23:15:13,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:13,099 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:15:13,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:15:13,112 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:15:13,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:15:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:15,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:15:15,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:17,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1360 trivial. 0 not checked. [2021-11-12 23:15:17,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1360 trivial. 0 not checked. [2021-11-12 23:15:18,555 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:15:18,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624194078] [2021-11-12 23:15:18,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624194078] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:15:18,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:15:18,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:15:18,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984793696] [2021-11-12 23:15:18,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:15:18,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:15:18,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:15:18,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:15:18,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:15:18,558 INFO L87 Difference]: Start difference. First operand 40432 states and 54330 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 23:15:20,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:15:20,948 INFO L93 Difference]: Finished difference Result 40438 states and 54335 transitions. [2021-11-12 23:15:20,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:15:20,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 277 [2021-11-12 23:15:20,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:15:21,068 INFO L225 Difference]: With dead ends: 40438 [2021-11-12 23:15:21,068 INFO L226 Difference]: Without dead ends: 40436 [2021-11-12 23:15:21,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 547 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 23:15:21,081 INFO L933 BasicCegarLoop]: 2760 mSDtfsCounter, 2684 mSDsluCounter, 5498 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2693 SdHoareTripleChecker+Valid, 8258 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.77ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.60ms IncrementalHoareTripleChecker+Time [2021-11-12 23:15:21,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2693 Valid, 8258 Invalid, 23 Unknown, 0 Unchecked, 17.77ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 64.60ms Time] [2021-11-12 23:15:21,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40436 states. [2021-11-12 23:15:23,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40436 to 40436. [2021-11-12 23:15:23,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40436 states, 27288 states have (on average 1.2176781002638521) internal successors, (33228), 27758 states have internal predecessors, (33228), 10538 states have call successors, (10538), 2644 states have call predecessors, (10538), 2607 states have return successors, (10567), 10363 states have call predecessors, (10567), 10535 states have call successors, (10567) [2021-11-12 23:15:23,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40436 states to 40436 states and 54333 transitions. [2021-11-12 23:15:23,721 INFO L78 Accepts]: Start accepts. Automaton has 40436 states and 54333 transitions. Word has length 277 [2021-11-12 23:15:23,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:23,722 INFO L470 AbstractCegarLoop]: Abstraction has 40436 states and 54333 transitions. [2021-11-12 23:15:23,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 23:15:23,722 INFO L276 IsEmpty]: Start isEmpty. Operand 40436 states and 54333 transitions. [2021-11-12 23:15:23,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-12 23:15:23,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:23,728 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 16, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:15:23,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:23,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:15:23,933 INFO L402 AbstractCegarLoop]: === Iteration 11 === 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 23:15:23,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:23,934 INFO L85 PathProgramCache]: Analyzing trace with hash -688118824, now seen corresponding path program 1 times [2021-11-12 23:15:23,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:15:23,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582882676] [2021-11-12 23:15:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:23,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:15:23,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:15:23,937 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:15:23,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d6fd14-d731-4f6c-afb5-b079373b4aa9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:15:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:26,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:15:26,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:27,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 1194 trivial. 0 not checked. [2021-11-12 23:15:27,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1314 trivial. 0 not checked. [2021-11-12 23:15:28,278 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:15:28,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582882676] [2021-11-12 23:15:28,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582882676] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:15:28,278 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:15:28,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:15:28,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253196385] [2021-11-12 23:15:28,279 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:15:28,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:15:28,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:15:28,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:15:28,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:15:28,280 INFO L87 Difference]: Start difference. First operand 40436 states and 54333 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 4 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2021-11-12 23:15:30,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []