./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/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 91f73b42c8fe3db55fbb7a7497120df3b9b2fa6084f78fe538d2c182c8caed17 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:53:29,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:53:29,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:53:29,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:53:29,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:53:29,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:53:29,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:53:29,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:53:29,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:53:29,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:53:29,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:53:29,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:53:29,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:53:29,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:53:29,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:53:29,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:53:29,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:53:29,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:53:29,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:53:29,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:53:29,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:53:29,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:53:29,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:53:29,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:53:29,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:53:29,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:53:29,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:53:29,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:53:29,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:53:29,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:53:29,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:53:29,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:53:29,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:53:29,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:53:29,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:53:29,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:53:29,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:53:29,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:53:29,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:53:29,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:53:29,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:53:29,536 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:53:29,584 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:53:29,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:53:29,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:53:29,586 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:53:29,586 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:53:29,586 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:53:29,586 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:53:29,587 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:53:29,587 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:53:29,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:53:29,588 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:53:29,588 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:53:29,589 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:53:29,589 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:53:29,589 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:53:29,589 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:53:29,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:53:29,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:53:29,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:53:29,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:53:29,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:53:29,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:53:29,592 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:53:29,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:53:29,592 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:53:29,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:53:29,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:53:29,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:53:29,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:53:29,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:53:29,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:53:29,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:53:29,596 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:53:29,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:53:29,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:53:29,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:53:29,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:53:29,597 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91f73b42c8fe3db55fbb7a7497120df3b9b2fa6084f78fe538d2c182c8caed17 [2021-11-12 23:53:29,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:53:29,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:53:29,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:53:29,883 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:53:29,884 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:53:29,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i [2021-11-12 23:53:29,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/data/983680146/453788ea8a6b4b0eb173f8db7942b5fc/FLAG2a541fec6 [2021-11-12 23:53:31,063 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:53:31,064 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i [2021-11-12 23:53:31,143 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/data/983680146/453788ea8a6b4b0eb173f8db7942b5fc/FLAG2a541fec6 [2021-11-12 23:53:31,412 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/data/983680146/453788ea8a6b4b0eb173f8db7942b5fc [2021-11-12 23:53:31,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:53:31,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:53:31,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:53:31,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:53:31,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:53:31,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:53:31" (1/1) ... [2021-11-12 23:53:31,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a9d1e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:31, skipping insertion in model container [2021-11-12 23:53:31,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:53:31" (1/1) ... [2021-11-12 23:53:31,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:53:31,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:53:35,819 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 23:53:35,927 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 23:53:36,077 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 23:53:36,077 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 23:53:36,410 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 23:53:36,421 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 23:53:38,319 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583669,583682] [2021-11-12 23:53:38,326 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583838,583851] [2021-11-12 23:53:38,327 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584005,584018] [2021-11-12 23:53:38,336 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584173,584186] [2021-11-12 23:53:38,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:53:38,518 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 23:53:38,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@b69937b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:38, skipping insertion in model container [2021-11-12 23:53:38,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:53:38,521 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:53:38,524 INFO L158 Benchmark]: Toolchain (without parser) took 7106.64ms. Allocated memory was 94.4MB in the beginning and 205.5MB in the end (delta: 111.1MB). Free memory was 48.7MB in the beginning and 137.4MB in the end (delta: -88.7MB). Peak memory consumption was 80.0MB. Max. memory is 16.1GB. [2021-11-12 23:53:38,525 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 77.6MB. Free memory was 56.7MB in the beginning and 56.7MB in the end (delta: 35.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:53:38,526 INFO L158 Benchmark]: CACSL2BoogieTranslator took 7104.29ms. Allocated memory was 94.4MB in the beginning and 205.5MB in the end (delta: 111.1MB). Free memory was 48.5MB in the beginning and 137.4MB in the end (delta: -88.8MB). Peak memory consumption was 80.0MB. Max. memory is 16.1GB. [2021-11-12 23:53:38,529 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 77.6MB. Free memory was 56.7MB in the beginning and 56.7MB in the end (delta: 35.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 7104.29ms. Allocated memory was 94.4MB in the beginning and 205.5MB in the end (delta: 111.1MB). Free memory was 48.5MB in the beginning and 137.4MB in the end (delta: -88.8MB). Peak memory consumption was 80.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7159]: 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/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 91f73b42c8fe3db55fbb7a7497120df3b9b2fa6084f78fe538d2c182c8caed17 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:53:40,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:53:40,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:53:40,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:53:40,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:53:40,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:53:40,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:53:40,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:53:40,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:53:40,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:53:40,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:53:40,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:53:40,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:53:40,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:53:40,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:53:40,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:53:40,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:53:40,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:53:40,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:53:40,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:53:40,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:53:40,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:53:40,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:53:40,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:53:40,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:53:40,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:53:40,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:53:40,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:53:40,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:53:40,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:53:40,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:53:40,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:53:40,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:53:40,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:53:40,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:53:40,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:53:40,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:53:40,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:53:40,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:53:40,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:53:40,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:53:40,883 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:53:40,924 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:53:40,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:53:40,926 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:53:40,926 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:53:40,926 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:53:40,927 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:53:40,927 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:53:40,927 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:53:40,927 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:53:40,928 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:53:40,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:53:40,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:53:40,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:53:40,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:53:40,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:53:40,932 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:53:40,932 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:53:40,932 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:53:40,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:53:40,933 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:53:40,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:53:40,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:53:40,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:53:40,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:53:40,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:53:40,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:53:40,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:53:40,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:53:40,935 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:53:40,935 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:53:40,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:53:40,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:53:40,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:53:40,936 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91f73b42c8fe3db55fbb7a7497120df3b9b2fa6084f78fe538d2c182c8caed17 [2021-11-12 23:53:41,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:53:41,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:53:41,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:53:41,361 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:53:41,362 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:53:41,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i [2021-11-12 23:53:41,430 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/data/af2cfd2f8/07c22583de6c4932abef3c040d40df0b/FLAG7ab52246c [2021-11-12 23:53:42,769 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:53:42,771 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i [2021-11-12 23:53:42,888 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/data/af2cfd2f8/07c22583de6c4932abef3c040d40df0b/FLAG7ab52246c [2021-11-12 23:53:43,343 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/data/af2cfd2f8/07c22583de6c4932abef3c040d40df0b [2021-11-12 23:53:43,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:53:43,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:53:43,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:53:43,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:53:43,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:53:43,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:53:43" (1/1) ... [2021-11-12 23:53:43,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b505072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:43, skipping insertion in model container [2021-11-12 23:53:43,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:53:43" (1/1) ... [2021-11-12 23:53:43,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:53:43,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:53:50,586 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583669,583682] [2021-11-12 23:53:50,589 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583838,583851] [2021-11-12 23:53:50,589 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584005,584018] [2021-11-12 23:53:50,590 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584173,584186] [2021-11-12 23:53:50,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:53:50,792 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:53:50,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:53:51,592 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583669,583682] [2021-11-12 23:53:51,592 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583838,583851] [2021-11-12 23:53:51,593 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584005,584018] [2021-11-12 23:53:51,593 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584173,584186] [2021-11-12 23:53:51,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:53:51,644 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:53:52,620 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583669,583682] [2021-11-12 23:53:52,620 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583838,583851] [2021-11-12 23:53:52,621 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584005,584018] [2021-11-12 23:53:52,621 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_4cf75dfc-ea88-43bd-9aca-110f67718e7f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584173,584186] [2021-11-12 23:53:52,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:53:53,204 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:53:53,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:53 WrapperNode [2021-11-12 23:53:53,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:53:53,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:53:53,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:53:53,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:53:53,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:53" (1/1) ... [2021-11-12 23:53:53,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:53" (1/1) ... [2021-11-12 23:53:53,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:53:53,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:53:53,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:53:53,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:53:53,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:53" (1/1) ... [2021-11-12 23:53:53,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:53" (1/1) ... [2021-11-12 23:53:53,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:53" (1/1) ... [2021-11-12 23:53:53,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:53" (1/1) ... [2021-11-12 23:53:54,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:53" (1/1) ... [2021-11-12 23:53:54,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:53" (1/1) ... [2021-11-12 23:53:54,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:53" (1/1) ... [2021-11-12 23:53:54,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:53:54,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:53:54,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:53:54,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:53:54,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:53" (1/1) ... [2021-11-12 23:53:54,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:53:54,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:53:54,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:53:54,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:53:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-12 23:53:54,353 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-12 23:53:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_remove [2021-11-12 23:53:54,353 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_remove [2021-11-12 23:53:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_led [2021-11-12 23:53:54,354 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_led [2021-11-12 23:53:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_alloc_rx_skbs [2021-11-12 23:53:54,354 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_alloc_rx_skbs [2021-11-12 23:53:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 23:53:54,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 23:53:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure rx_set_rss [2021-11-12 23:53:54,355 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_set_rss [2021-11-12 23:53:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_power_aux [2021-11-12 23:53:54,355 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_power_aux [2021-11-12 23:53:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-12 23:53:54,355 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-12 23:53:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2021-11-12 23:53:54,356 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2021-11-12 23:53:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-12 23:53:54,356 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-12 23:53:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_add_filter [2021-11-12 23:53:54,356 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_add_filter [2021-11-12 23:53:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-12 23:53:54,357 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-12 23:53:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure PageTail [2021-11-12 23:53:54,357 INFO L138 BoogieDeclarations]: Found implementation of procedure PageTail [2021-11-12 23:53:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size_set [2021-11-12 23:53:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size_set [2021-11-12 23:53:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-12 23:53:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-12 23:53:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-12 23:53:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-12 23:53:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_init_netdev [2021-11-12 23:53:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_init_netdev [2021-11-12 23:53:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-12 23:53:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-12 23:53:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-12 23:53:54,360 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-12 23:53:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure netif_schedule_queue [2021-11-12 23:53:54,360 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_schedule_queue [2021-11-12 23:53:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_get_regs_len [2021-11-12 23:53:54,361 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_get_regs_len [2021-11-12 23:53:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-12 23:53:54,362 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-12 23:53:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_update [2021-11-12 23:53:54,363 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_update [2021-11-12 23:53:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-12 23:53:54,363 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-12 23:53:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 23:53:54,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 23:53:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_ramset [2021-11-12 23:53:54,364 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_ramset [2021-11-12 23:53:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-12 23:53:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-12 23:53:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_update_features [2021-11-12 23:53:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_update_features [2021-11-12 23:53:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_netpoll [2021-11-12 23:53:54,366 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_netpoll [2021-11-12 23:53:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-12 23:53:54,366 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-12 23:53:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-12 23:53:54,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-12 23:53:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2021-11-12 23:53:54,368 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2021-11-12 23:53:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-12 23:53:54,368 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-12 23:53:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-12 23:53:54,368 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-12 23:53:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-12 23:53:54,369 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-12 23:53:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_tx_lock [2021-11-12 23:53:54,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_tx_lock [2021-11-12 23:53:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-12 23:53:54,369 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-12 23:53:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 23:53:54,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 23:53:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:53:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_add [2021-11-12 23:53:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_add [2021-11-12 23:53:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev [2021-11-12 23:53:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev [2021-11-12 23:53:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_map_skb [2021-11-12 23:53:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_map_skb [2021-11-12 23:53:54,372 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_resume [2021-11-12 23:53:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_resume [2021-11-12 23:53:54,373 INFO L130 BoogieDeclarations]: Found specification of procedure roundup_ring_size [2021-11-12 23:53:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure roundup_ring_size [2021-11-12 23:53:54,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 23:53:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 23:53:54,373 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-12 23:53:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-12 23:53:54,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:53:54,374 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-12 23:53:54,374 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_pci_read32 [2021-11-12 23:53:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_pci_read32 [2021-11-12 23:53:54,375 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2021-11-12 23:53:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2021-11-12 23:53:54,375 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_disable [2021-11-12 23:53:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_disable [2021-11-12 23:53:54,376 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_clean [2021-11-12 23:53:54,376 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_clean [2021-11-12 23:53:54,376 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-12 23:53:54,376 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-12 23:53:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 23:53:54,377 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 23:53:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_hw_down [2021-11-12 23:53:54,380 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_hw_down [2021-11-12 23:53:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-12 23:53:54,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-12 23:53:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_phy_reinit [2021-11-12 23:53:54,381 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_phy_reinit [2021-11-12 23:53:54,382 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-12 23:53:54,383 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-12 23:53:54,383 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_pci_read16 [2021-11-12 23:53:54,389 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_pci_read16 [2021-11-12 23:53:54,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:53:54,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:53:54,390 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_pci_write16 [2021-11-12 23:53:54,390 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_pci_write16 [2021-11-12 23:53:54,390 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-12 23:53:54,390 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-12 23:53:54,390 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_free_buffers [2021-11-12 23:53:54,390 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_free_buffers [2021-11-12 23:53:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-12 23:53:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-12 23:53:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:53:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-12 23:53:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-12 23:53:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2021-11-12 23:53:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2021-11-12 23:53:54,392 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-12 23:53:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-12 23:53:54,392 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_read32 [2021-11-12 23:53:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_read32 [2021-11-12 23:53:54,392 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-12 23:53:54,393 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_set_multicast [2021-11-12 23:53:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_set_multicast [2021-11-12 23:53:54,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-12 23:53:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-12 23:53:54,393 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_prefetch_init [2021-11-12 23:53:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_prefetch_init [2021-11-12 23:53:54,393 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_reset [2021-11-12 23:53:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_reset [2021-11-12 23:53:54,394 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-12 23:53:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-12 23:53:54,394 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-12 23:53:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-12 23:53:54,394 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-12 23:53:54,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-12 23:53:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_phy_lock_of_sky2_port [2021-11-12 23:53:54,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_phy_lock_of_sky2_port [2021-11-12 23:53:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:53:54,395 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:53:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-12 23:53:54,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-12 23:53:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-12 23:53:54,396 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-12 23:53:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_vpd_wait [2021-11-12 23:53:54,396 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_vpd_wait [2021-11-12 23:53:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-12 23:53:54,396 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-12 23:53:54,397 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_shutdown [2021-11-12 23:53:54,397 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_shutdown [2021-11-12 23:53:54,397 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_read16 [2021-11-12 23:53:54,397 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_read16 [2021-11-12 23:53:54,397 INFO L130 BoogieDeclarations]: Found specification of procedure get_tx_le [2021-11-12 23:53:54,397 INFO L138 BoogieDeclarations]: Found implementation of procedure get_tx_le [2021-11-12 23:53:54,397 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_stop [2021-11-12 23:53:54,398 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_stop [2021-11-12 23:53:54,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:53:54,398 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-12 23:53:54,398 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-12 23:53:54,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:53:54,398 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_all_down [2021-11-12 23:53:54,399 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_all_down [2021-11-12 23:53:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-12 23:53:54,399 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-12 23:53:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure __gm_phy_read [2021-11-12 23:53:54,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __gm_phy_read [2021-11-12 23:53:54,401 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-12 23:53:54,401 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-12 23:53:54,401 INFO L130 BoogieDeclarations]: Found specification of procedure pci_find_capability [2021-11-12 23:53:54,401 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_find_capability [2021-11-12 23:53:54,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-12 23:53:54,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-12 23:53:54,402 INFO L130 BoogieDeclarations]: Found specification of procedure gma_write16 [2021-11-12 23:53:54,402 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_write16 [2021-11-12 23:53:54,402 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-12 23:53:54,402 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-12 23:53:54,402 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_next_rx [2021-11-12 23:53:54,403 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_next_rx [2021-11-12 23:53:54,403 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-12 23:53:54,403 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-12 23:53:54,403 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_irq [2021-11-12 23:53:54,403 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_irq [2021-11-12 23:53:54,403 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_get_eeprom_len [2021-11-12 23:53:54,404 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_get_eeprom_len [2021-11-12 23:53:54,404 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 23:53:54,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 23:53:54,404 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-12 23:53:54,404 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-12 23:53:54,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_79 [2021-11-12 23:53:54,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_79 [2021-11-12 23:53:54,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 23:53:54,405 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_us2clk [2021-11-12 23:53:54,405 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_us2clk [2021-11-12 23:53:54,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 23:53:54,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 23:53:54,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 23:53:54,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:53:54,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:53:54,406 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2021-11-12 23:53:54,406 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2021-11-12 23:53:54,406 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-11-12 23:53:54,406 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-11-12 23:53:54,406 INFO L130 BoogieDeclarations]: Found specification of procedure device_may_wakeup [2021-11-12 23:53:54,407 INFO L138 BoogieDeclarations]: Found implementation of procedure device_may_wakeup [2021-11-12 23:53:54,407 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-12 23:53:54,407 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-12 23:53:54,407 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_qset [2021-11-12 23:53:54,407 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_qset [2021-11-12 23:53:54,407 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_mhz [2021-11-12 23:53:54,408 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_mhz [2021-11-12 23:53:54,408 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-12 23:53:54,408 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-12 23:53:54,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 23:53:54,408 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 23:53:54,408 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-12 23:53:54,408 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-12 23:53:54,409 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats32 [2021-11-12 23:53:54,409 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats32 [2021-11-12 23:53:54,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:53:54,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:53:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-12 23:53:54,414 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-12 23:53:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_supported_modes [2021-11-12 23:53:54,414 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_supported_modes [2021-11-12 23:53:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure gm_phy_read [2021-11-12 23:53:54,414 INFO L138 BoogieDeclarations]: Found implementation of procedure gm_phy_read [2021-11-12 23:53:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_alloc [2021-11-12 23:53:54,415 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_alloc [2021-11-12 23:53:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-12 23:53:54,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-12 23:53:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2021-11-12 23:53:54,416 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2021-11-12 23:53:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_tx_unlock [2021-11-12 23:53:54,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_tx_unlock [2021-11-12 23:53:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 23:53:54,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 23:53:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_show_addr [2021-11-12 23:53:54,417 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_show_addr [2021-11-12 23:53:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-12 23:53:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-12 23:53:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_close [2021-11-12 23:53:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_close [2021-11-12 23:53:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-12 23:53:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-12 23:53:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 23:53:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 23:53:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_start [2021-11-12 23:53:54,419 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_start [2021-11-12 23:53:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:53:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-12 23:53:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:53:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:53:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2021-11-12 23:53:54,420 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2021-11-12 23:53:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:53:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats64 [2021-11-12 23:53:54,420 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats64 [2021-11-12 23:53:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-12 23:53:54,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-12 23:53:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-12 23:53:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-12 23:53:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-12 23:53:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-12 23:53:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure pci_is_pcie [2021-11-12 23:53:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_is_pcie [2021-11-12 23:53:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-12 23:53:54,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-12 23:53:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-12 23:53:54,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-12 23:53:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_80 [2021-11-12 23:53:54,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_80 [2021-11-12 23:53:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 23:53:54,422 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 23:53:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-12 23:53:54,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-12 23:53:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-12 23:53:54,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-12 23:53:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_hw_up [2021-11-12 23:53:54,423 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_hw_up [2021-11-12 23:53:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interrupt_interrupt_instance_1 [2021-11-12 23:53:54,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interrupt_interrupt_instance_1 [2021-11-12 23:53:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interrupt_interrupt_instance_2 [2021-11-12 23:53:54,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interrupt_interrupt_instance_2 [2021-11-12 23:53:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-11-12 23:53:54,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-11-12 23:53:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_tx_unmap [2021-11-12 23:53:54,424 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_tx_unmap [2021-11-12 23:53:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_put_idx [2021-11-12 23:53:54,425 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_put_idx [2021-11-12 23:53:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 23:53:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 23:53:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:53:54,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:53:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 23:53:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_dma_map [2021-11-12 23:53:54,426 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_dma_map [2021-11-12 23:53:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2021-11-12 23:53:54,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2021-11-12 23:53:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_phy_power_up [2021-11-12 23:53:54,426 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_phy_power_up [2021-11-12 23:53:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_phy_init [2021-11-12 23:53:54,426 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_phy_init [2021-11-12 23:53:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-12 23:53:54,427 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-12 23:53:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_tx_complete [2021-11-12 23:53:54,427 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_tx_complete [2021-11-12 23:53:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2021-11-12 23:53:54,427 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2021-11-12 23:53:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-12 23:53:54,428 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-12 23:53:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 23:53:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure gma_read16 [2021-11-12 23:53:54,428 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_read16 [2021-11-12 23:53:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:53:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:53:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:53:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 23:53:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:53:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 23:53:54,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 23:53:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_all_up [2021-11-12 23:53:54,429 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_all_up [2021-11-12 23:53:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 23:53:54,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 23:53:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_tx_timeout [2021-11-12 23:53:54,430 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_tx_timeout [2021-11-12 23:53:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-12 23:53:54,430 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-12 23:53:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_wol_supported [2021-11-12 23:53:54,430 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_wol_supported [2021-11-12 23:53:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_pci_write32 [2021-11-12 23:53:54,431 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_pci_write32 [2021-11-12 23:53:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2021-11-12 23:53:54,431 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2021-11-12 23:53:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_submit [2021-11-12 23:53:54,431 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_submit [2021-11-12 23:53:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-12 23:53:54,432 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-12 23:53:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-12 23:53:54,432 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-12 23:53:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_vlan_mode [2021-11-12 23:53:54,432 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_vlan_mode [2021-11-12 23:53:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_read8 [2021-11-12 23:53:54,432 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_read8 [2021-11-12 23:53:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2021-11-12 23:53:54,433 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2021-11-12 23:53:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure gma_read32 [2021-11-12 23:53:54,433 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_read32 [2021-11-12 23:53:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_phy_lock_of_sky2_port [2021-11-12 23:53:54,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_phy_lock_of_sky2_port [2021-11-12 23:53:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure gma_set_addr [2021-11-12 23:53:54,434 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_set_addr [2021-11-12 23:53:54,434 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-12 23:53:54,434 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-12 23:53:54,434 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2021-11-12 23:53:54,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2021-11-12 23:53:54,434 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-12 23:53:54,434 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-12 23:53:54,435 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-12 23:53:54,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-12 23:53:54,435 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-12 23:53:54,438 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-12 23:53:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:53:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:53:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:53:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:53:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:53:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_nway_reset [2021-11-12 23:53:54,440 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_nway_reset [2021-11-12 23:53:54,440 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-12 23:53:54,440 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-12 23:53:54,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-12 23:53:54,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-12 23:53:54,440 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-12 23:53:54,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-12 23:53:54,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-12 23:53:54,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-12 23:53:54,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 23:53:54,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 23:53:54,441 INFO L130 BoogieDeclarations]: Found specification of procedure tx_avail [2021-11-12 23:53:54,441 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_avail [2021-11-12 23:53:54,441 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_unmap_skb [2021-11-12 23:53:54,441 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_unmap_skb [2021-11-12 23:53:54,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-12 23:53:54,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-12 23:53:54,442 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_clk2us [2021-11-12 23:53:54,442 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_clk2us [2021-11-12 23:53:54,442 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_set_tx_stfwd [2021-11-12 23:53:54,442 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_set_tx_stfwd [2021-11-12 23:53:54,442 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_enable_rx_tx [2021-11-12 23:53:54,443 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_enable_rx_tx [2021-11-12 23:53:54,443 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-12 23:53:54,443 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-12 23:53:54,443 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-12 23:53:54,443 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-12 23:53:54,443 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-12 23:53:54,443 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-12 23:53:54,444 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_setup_irq [2021-11-12 23:53:54,444 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_setup_irq [2021-11-12 23:53:54,444 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-12 23:53:54,444 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-12 23:53:54,444 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-11-12 23:53:54,444 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-11-12 23:53:54,444 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_is_copper [2021-11-12 23:53:54,445 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_is_copper [2021-11-12 23:53:54,445 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-12 23:53:54,445 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-12 23:53:54,445 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_suspend [2021-11-12 23:53:54,445 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_suspend [2021-11-12 23:53:54,445 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-12 23:53:54,445 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-12 23:53:54,446 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_write16 [2021-11-12 23:53:54,446 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_write16 [2021-11-12 23:53:54,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 23:53:54,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 23:53:54,446 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-12 23:53:54,446 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-12 23:53:54,446 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_write8 [2021-11-12 23:53:54,447 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_write8 [2021-11-12 23:53:54,447 INFO L130 BoogieDeclarations]: Found specification of procedure gm_phy_write [2021-11-12 23:53:54,447 INFO L138 BoogieDeclarations]: Found implementation of procedure gm_phy_write [2021-11-12 23:53:54,447 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2021-11-12 23:53:54,447 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2021-11-12 23:53:54,447 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-12 23:53:54,447 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-12 23:53:54,447 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_write32 [2021-11-12 23:53:54,448 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_write32 [2021-11-12 23:53:54,448 INFO L130 BoogieDeclarations]: Found specification of procedure gma_read64 [2021-11-12 23:53:54,448 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_read64 [2021-11-12 23:53:54,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 23:53:54,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 23:53:54,448 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-12 23:53:54,448 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-12 23:53:54,449 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_open [2021-11-12 23:53:54,449 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_open [2021-11-12 23:53:54,449 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-12 23:53:56,163 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:54:58,492 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:54:58,492 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-12 23:54:58,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:54:58 BoogieIcfgContainer [2021-11-12 23:54:58,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:54:58,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:54:58,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:54:58,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:54:58,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:53:43" (1/3) ... [2021-11-12 23:54:58,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676163bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:54:58, skipping insertion in model container [2021-11-12 23:54:58,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:53" (2/3) ... [2021-11-12 23:54:58,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676163bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:54:58, skipping insertion in model container [2021-11-12 23:54:58,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:54:58" (3/3) ... [2021-11-12 23:54:58,509 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i [2021-11-12 23:54:58,514 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:54:58,515 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-12 23:54:58,584 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:54:58,598 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 23:54:58,598 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 23:54:58,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 3880 states, 2516 states have (on average 1.273449920508744) internal successors, (3204), 2622 states have internal predecessors, (3204), 1154 states have call successors, (1154), 208 states have call predecessors, (1154), 207 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-12 23:54:58,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-12 23:54:58,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:58,702 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:58,702 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 23:54:58,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:58,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1734111632, now seen corresponding path program 1 times [2021-11-12 23:54:58,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:58,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183981487] [2021-11-12 23:54:58,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:58,734 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:58,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:58,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:58,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:55:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:09,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 4264 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:55:09,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:11,219 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-12 23:55:11,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-12 23:55:12,014 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:55:12,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183981487] [2021-11-12 23:55:12,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183981487] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:55:12,014 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:55:12,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-12 23:55:12,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106255186] [2021-11-12 23:55:12,017 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:55:12,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:55:12,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:55:12,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:55:12,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:55:12,057 INFO L87 Difference]: Start difference. First operand has 3880 states, 2516 states have (on average 1.273449920508744) internal successors, (3204), 2622 states have internal predecessors, (3204), 1154 states have call successors, (1154), 208 states have call predecessors, (1154), 207 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 23:55:13,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:55:13,081 INFO L93 Difference]: Finished difference Result 7661 states and 11000 transitions. [2021-11-12 23:55:13,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:55:13,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 62 [2021-11-12 23:55:13,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:55:13,141 INFO L225 Difference]: With dead ends: 7661 [2021-11-12 23:55:13,142 INFO L226 Difference]: Without dead ends: 3852 [2021-11-12 23:55:13,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:55:13,185 INFO L933 BasicCegarLoop]: 5417 mSDtfsCounter, 5327 mSDsluCounter, 10872 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 224.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5342 SdHoareTripleChecker+Valid, 16289 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 82.99ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 232.27ms IncrementalHoareTripleChecker+Time [2021-11-12 23:55:13,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5342 Valid, 16289 Invalid, 26 Unknown, 0 Unchecked, 82.99ms Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 232.27ms Time] [2021-11-12 23:55:13,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2021-11-12 23:55:13,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 3850. [2021-11-12 23:55:13,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3850 states, 2484 states have (on average 1.2536231884057971) internal successors, (3114), 2587 states have internal predecessors, (3114), 1149 states have call successors, (1149), 215 states have call predecessors, (1149), 214 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-12 23:55:13,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 5409 transitions. [2021-11-12 23:55:13,589 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 5409 transitions. Word has length 62 [2021-11-12 23:55:13,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:55:13,590 INFO L470 AbstractCegarLoop]: Abstraction has 3850 states and 5409 transitions. [2021-11-12 23:55:13,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 23:55:13,590 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 5409 transitions. [2021-11-12 23:55:13,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 23:55:13,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:55:13,598 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-11-12 23:55:13,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:13,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:55:13,802 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:55:13,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:55:13,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2059272523, now seen corresponding path program 1 times [2021-11-12 23:55:13,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:55:13,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643843196] [2021-11-12 23:55:13,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:13,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:55:13,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:55:13,815 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:55:13,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:55:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:24,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 4271 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:55:24,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:26,021 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-12 23:55:26,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-12 23:55:26,837 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:55:26,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643843196] [2021-11-12 23:55:26,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643843196] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:55:26,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:55:26,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:55:26,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165853934] [2021-11-12 23:55:26,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:55:26,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:55:26,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:55:26,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:55:26,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:55:26,841 INFO L87 Difference]: Start difference. First operand 3850 states and 5409 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:55:27,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:55:27,907 INFO L93 Difference]: Finished difference Result 3856 states and 5414 transitions. [2021-11-12 23:55:27,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:55:27,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67 [2021-11-12 23:55:27,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:55:27,948 INFO L225 Difference]: With dead ends: 3856 [2021-11-12 23:55:27,948 INFO L226 Difference]: Without dead ends: 3854 [2021-11-12 23:55:27,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:55:27,954 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 216.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5351 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.26ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 225.52ms IncrementalHoareTripleChecker+Time [2021-11-12 23:55:27,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5351 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 56.26ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 225.52ms Time] [2021-11-12 23:55:27,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2021-11-12 23:55:28,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 3854. [2021-11-12 23:55:28,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3854 states, 2487 states have (on average 1.253317249698432) internal successors, (3117), 2590 states have internal predecessors, (3117), 1149 states have call successors, (1149), 216 states have call predecessors, (1149), 215 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-12 23:55:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3854 states to 3854 states and 5412 transitions. [2021-11-12 23:55:28,267 INFO L78 Accepts]: Start accepts. Automaton has 3854 states and 5412 transitions. Word has length 67 [2021-11-12 23:55:28,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:55:28,270 INFO L470 AbstractCegarLoop]: Abstraction has 3854 states and 5412 transitions. [2021-11-12 23:55:28,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:55:28,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3854 states and 5412 transitions. [2021-11-12 23:55:28,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-12 23:55:28,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:55:28,277 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-12 23:55:28,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:28,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:55:28,490 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:55:28,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:55:28,491 INFO L85 PathProgramCache]: Analyzing trace with hash 688715888, now seen corresponding path program 1 times [2021-11-12 23:55:28,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:55:28,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554718541] [2021-11-12 23:55:28,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:28,499 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:55:28,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:55:28,500 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:55:28,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:55:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:39,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 4278 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:55:39,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-12 23:55:40,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:41,414 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-12 23:55:41,414 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:55:41,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554718541] [2021-11-12 23:55:41,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554718541] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:55:41,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:55:41,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:55:41,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628625118] [2021-11-12 23:55:41,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:55:41,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:55:41,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:55:41,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:55:41,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:55:41,417 INFO L87 Difference]: Start difference. First operand 3854 states and 5412 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-12 23:55:42,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:55:42,177 INFO L93 Difference]: Finished difference Result 3860 states and 5417 transitions. [2021-11-12 23:55:42,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:55:42,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2021-11-12 23:55:42,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:55:42,211 INFO L225 Difference]: With dead ends: 3860 [2021-11-12 23:55:42,211 INFO L226 Difference]: Without dead ends: 3858 [2021-11-12 23:55:42,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:55:42,216 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 203.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5350 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.56ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 209.65ms IncrementalHoareTripleChecker+Time [2021-11-12 23:55:42,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5350 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 51.56ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 209.65ms Time] [2021-11-12 23:55:42,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2021-11-12 23:55:42,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3858. [2021-11-12 23:55:42,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 2490 states have (on average 1.2530120481927711) internal successors, (3120), 2593 states have internal predecessors, (3120), 1149 states have call successors, (1149), 217 states have call predecessors, (1149), 216 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-12 23:55:42,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 5415 transitions. [2021-11-12 23:55:42,615 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 5415 transitions. Word has length 72 [2021-11-12 23:55:42,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:55:42,617 INFO L470 AbstractCegarLoop]: Abstraction has 3858 states and 5415 transitions. [2021-11-12 23:55:42,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-12 23:55:42,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 5415 transitions. [2021-11-12 23:55:42,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 23:55:42,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:55:42,621 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:55:42,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:42,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:55:42,842 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:55:42,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:55:42,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2037183317, now seen corresponding path program 1 times [2021-11-12 23:55:42,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:55:42,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98847040] [2021-11-12 23:55:42,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:42,851 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:55:42,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:55:42,852 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:55:42,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:55:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:53,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 4285 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:55:53,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:55:54,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:55,661 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:55:55,661 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:55:55,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98847040] [2021-11-12 23:55:55,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98847040] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:55:55,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:55:55,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:55:55,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408512762] [2021-11-12 23:55:55,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:55:55,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:55:55,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:55:55,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:55:55,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:55:55,664 INFO L87 Difference]: Start difference. First operand 3858 states and 5415 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-12 23:55:56,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:55:56,408 INFO L93 Difference]: Finished difference Result 3864 states and 5420 transitions. [2021-11-12 23:55:56,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:55:56,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 77 [2021-11-12 23:55:56,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:55:56,444 INFO L225 Difference]: With dead ends: 3864 [2021-11-12 23:55:56,444 INFO L226 Difference]: Without dead ends: 3862 [2021-11-12 23:55:56,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:55:56,450 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 202.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5349 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.91ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 208.62ms IncrementalHoareTripleChecker+Time [2021-11-12 23:55:56,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5349 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 33.91ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 208.62ms Time] [2021-11-12 23:55:56,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3862 states. [2021-11-12 23:55:56,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3862 to 3862. [2021-11-12 23:55:56,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 2493 states have (on average 1.2527075812274369) internal successors, (3123), 2596 states have internal predecessors, (3123), 1149 states have call successors, (1149), 218 states have call predecessors, (1149), 217 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-12 23:55:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 5418 transitions. [2021-11-12 23:55:56,739 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 5418 transitions. Word has length 77 [2021-11-12 23:55:56,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:55:56,740 INFO L470 AbstractCegarLoop]: Abstraction has 3862 states and 5418 transitions. [2021-11-12 23:55:56,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-12 23:55:56,740 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 5418 transitions. [2021-11-12 23:55:56,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-12 23:55:56,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:55:56,744 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:55:56,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:56,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:55:56,958 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 23:55:56,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:55:56,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1361307824, now seen corresponding path program 1 times [2021-11-12 23:55:56,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:55:56,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414025222] [2021-11-12 23:55:56,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:56,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:55:56,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:55:56,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:55:57,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:56:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:56:07,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 4292 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:56:07,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:56:09,189 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:56:09,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:56:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:56:10,024 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:56:10,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414025222] [2021-11-12 23:56:10,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414025222] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:56:10,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:56:10,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:56:10,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84895119] [2021-11-12 23:56:10,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:56:10,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:56:10,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:56:10,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:56:10,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:56:10,027 INFO L87 Difference]: Start difference. First operand 3862 states and 5418 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-12 23:56:10,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:56:10,867 INFO L93 Difference]: Finished difference Result 3868 states and 5423 transitions. [2021-11-12 23:56:10,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:56:10,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 82 [2021-11-12 23:56:10,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:56:10,905 INFO L225 Difference]: With dead ends: 3868 [2021-11-12 23:56:10,905 INFO L226 Difference]: Without dead ends: 3866 [2021-11-12 23:56:10,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:56:10,910 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 223.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5348 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.29ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 228.78ms IncrementalHoareTripleChecker+Time [2021-11-12 23:56:10,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5348 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 35.29ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 228.78ms Time] [2021-11-12 23:56:10,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2021-11-12 23:56:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3866. [2021-11-12 23:56:11,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3866 states, 2496 states have (on average 1.2524038461538463) internal successors, (3126), 2599 states have internal predecessors, (3126), 1149 states have call successors, (1149), 219 states have call predecessors, (1149), 218 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-12 23:56:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3866 states to 3866 states and 5421 transitions. [2021-11-12 23:56:11,191 INFO L78 Accepts]: Start accepts. Automaton has 3866 states and 5421 transitions. Word has length 82 [2021-11-12 23:56:11,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:56:11,192 INFO L470 AbstractCegarLoop]: Abstraction has 3866 states and 5421 transitions. [2021-11-12 23:56:11,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-12 23:56:11,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3866 states and 5421 transitions. [2021-11-12 23:56:11,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-12 23:56:11,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:56:11,199 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:56:11,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:56:11,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:56:11,414 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 23:56:11,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:56:11,415 INFO L85 PathProgramCache]: Analyzing trace with hash -744546637, now seen corresponding path program 1 times [2021-11-12 23:56:11,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:56:11,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806759012] [2021-11-12 23:56:11,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:56:11,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:56:11,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:56:11,422 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:56:11,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:56:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:56:22,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 4341 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:56:22,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:56:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-12 23:56:24,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:56:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-12 23:56:27,186 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:56:27,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806759012] [2021-11-12 23:56:27,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806759012] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:56:27,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2145900860] [2021-11-12 23:56:27,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:56:27,186 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:56:27,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:56:27,188 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:56:27,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-12 23:56:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:56:29,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 4341 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:56:29,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:56:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-12 23:56:32,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:56:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-12 23:56:34,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2145900860] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:56:34,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:56:34,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 4] total 23 [2021-11-12 23:56:34,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027363712] [2021-11-12 23:56:34,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:56:34,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:56:34,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:56:34,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:56:34,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:56:34,031 INFO L87 Difference]: Start difference. First operand 3866 states and 5421 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:56:35,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:56:35,177 INFO L93 Difference]: Finished difference Result 3872 states and 5426 transitions. [2021-11-12 23:56:35,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:56:35,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 102 [2021-11-12 23:56:35,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:56:35,210 INFO L225 Difference]: With dead ends: 3872 [2021-11-12 23:56:35,210 INFO L226 Difference]: Without dead ends: 3870 [2021-11-12 23:56:35,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:56:35,215 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5326 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 211.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5335 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.19ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 217.25ms IncrementalHoareTripleChecker+Time [2021-11-12 23:56:35,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5335 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 31.19ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 217.25ms Time] [2021-11-12 23:56:35,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3870 states. [2021-11-12 23:56:35,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3870 to 3870. [2021-11-12 23:56:35,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3870 states, 2499 states have (on average 1.2521008403361344) internal successors, (3129), 2602 states have internal predecessors, (3129), 1149 states have call successors, (1149), 220 states have call predecessors, (1149), 219 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-12 23:56:35,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 5424 transitions. [2021-11-12 23:56:35,521 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 5424 transitions. Word has length 102 [2021-11-12 23:56:35,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:56:35,522 INFO L470 AbstractCegarLoop]: Abstraction has 3870 states and 5424 transitions. [2021-11-12 23:56:35,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:56:35,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 5424 transitions. [2021-11-12 23:56:35,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-12 23:56:35,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:56:35,525 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:56:35,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:56:35,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:56:35,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:56:35,941 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 23:56:35,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:56:35,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1251226064, now seen corresponding path program 1 times [2021-11-12 23:56:35,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:56:35,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745760733] [2021-11-12 23:56:35,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:56:35,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:56:35,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:56:35,948 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:56:35,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:56:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:56:46,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 4306 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:56:46,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:56:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-12 23:56:48,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:56:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-12 23:56:49,093 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:56:49,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745760733] [2021-11-12 23:56:49,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745760733] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:56:49,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:56:49,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:56:49,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612891890] [2021-11-12 23:56:49,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:56:49,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:56:49,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:56:49,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:56:49,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:56:49,095 INFO L87 Difference]: Start difference. First operand 3870 states and 5424 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:56:49,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:56:49,835 INFO L93 Difference]: Finished difference Result 3876 states and 5429 transitions. [2021-11-12 23:56:49,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:56:49,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 92 [2021-11-12 23:56:49,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:56:49,868 INFO L225 Difference]: With dead ends: 3876 [2021-11-12 23:56:49,868 INFO L226 Difference]: Without dead ends: 3874 [2021-11-12 23:56:49,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:56:49,872 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 182.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5346 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.15ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 194.60ms IncrementalHoareTripleChecker+Time [2021-11-12 23:56:49,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5346 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 28.15ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 194.60ms Time] [2021-11-12 23:56:49,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3874 states. [2021-11-12 23:56:50,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3874 to 3874. [2021-11-12 23:56:50,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3874 states, 2502 states have (on average 1.2517985611510791) internal successors, (3132), 2605 states have internal predecessors, (3132), 1149 states have call successors, (1149), 221 states have call predecessors, (1149), 220 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-12 23:56:50,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 5427 transitions. [2021-11-12 23:56:50,170 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 5427 transitions. Word has length 92 [2021-11-12 23:56:50,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:56:50,171 INFO L470 AbstractCegarLoop]: Abstraction has 3874 states and 5427 transitions. [2021-11-12 23:56:50,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:56:50,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 5427 transitions. [2021-11-12 23:56:50,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-12 23:56:50,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:56:50,174 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:56:50,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:56:50,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:56:50,398 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 23:56:50,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:56:50,398 INFO L85 PathProgramCache]: Analyzing trace with hash -386134573, now seen corresponding path program 1 times [2021-11-12 23:56:50,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:56:50,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665882773] [2021-11-12 23:56:50,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:56:50,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:56:50,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:56:50,404 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:56:50,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:57:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:57:01,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 4355 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:57:01,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:57:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-12 23:57:03,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:57:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-12 23:57:06,212 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:57:06,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665882773] [2021-11-12 23:57:06,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665882773] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:57:06,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1550198146] [2021-11-12 23:57:06,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:57:06,213 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:57:06,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:57:06,214 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:57:06,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-12 23:57:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:57:08,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 4355 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:57:08,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:57:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-12 23:57:11,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:57:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-12 23:57:13,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1550198146] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:57:13,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:57:13,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 4] total 23 [2021-11-12 23:57:13,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695352264] [2021-11-12 23:57:13,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:57:13,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:57:13,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:57:13,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:57:13,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:57:13,297 INFO L87 Difference]: Start difference. First operand 3874 states and 5427 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 23:57:14,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:57:14,444 INFO L93 Difference]: Finished difference Result 3880 states and 5432 transitions. [2021-11-12 23:57:14,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:57:14,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2021-11-12 23:57:14,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:57:14,472 INFO L225 Difference]: With dead ends: 3880 [2021-11-12 23:57:14,472 INFO L226 Difference]: Without dead ends: 3878 [2021-11-12 23:57:14,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:57:14,475 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5326 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 183.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5333 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.79ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 198.10ms IncrementalHoareTripleChecker+Time [2021-11-12 23:57:14,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5333 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 28.79ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 198.10ms Time] [2021-11-12 23:57:14,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2021-11-12 23:57:14,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3878. [2021-11-12 23:57:14,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 2505 states have (on average 1.251497005988024) internal successors, (3135), 2608 states have internal predecessors, (3135), 1149 states have call successors, (1149), 222 states have call predecessors, (1149), 221 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-12 23:57:14,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 5430 transitions. [2021-11-12 23:57:14,822 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 5430 transitions. Word has length 112 [2021-11-12 23:57:14,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:57:14,822 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 5430 transitions. [2021-11-12 23:57:14,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 23:57:14,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 5430 transitions. [2021-11-12 23:57:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-12 23:57:14,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:57:14,825 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:57:14,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:57:15,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:57:15,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:57:15,238 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 23:57:15,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:57:15,239 INFO L85 PathProgramCache]: Analyzing trace with hash 383655184, now seen corresponding path program 1 times [2021-11-12 23:57:15,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:57:15,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924830729] [2021-11-12 23:57:15,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:57:15,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:57:15,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:57:15,244 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:57:15,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:57:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:57:25,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 4320 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:57:25,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:57:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-11-12 23:57:27,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:57:28,424 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-11-12 23:57:28,424 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:57:28,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924830729] [2021-11-12 23:57:28,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924830729] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:57:28,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:57:28,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:57:28,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770388431] [2021-11-12 23:57:28,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:57:28,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:57:28,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:57:28,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:57:28,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:57:28,426 INFO L87 Difference]: Start difference. First operand 3878 states and 5430 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 23:57:29,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:57:29,279 INFO L93 Difference]: Finished difference Result 3884 states and 5435 transitions. [2021-11-12 23:57:29,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:57:29,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 102 [2021-11-12 23:57:29,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:57:29,309 INFO L225 Difference]: With dead ends: 3884 [2021-11-12 23:57:29,309 INFO L226 Difference]: Without dead ends: 3882 [2021-11-12 23:57:29,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:57:29,314 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 215.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5344 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.54ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 221.42ms IncrementalHoareTripleChecker+Time [2021-11-12 23:57:29,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5344 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 28.54ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 221.42ms Time] [2021-11-12 23:57:29,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2021-11-12 23:57:29,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3882. [2021-11-12 23:57:29,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 2508 states have (on average 1.2511961722488039) internal successors, (3138), 2611 states have internal predecessors, (3138), 1149 states have call successors, (1149), 223 states have call predecessors, (1149), 222 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-12 23:57:29,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5433 transitions. [2021-11-12 23:57:29,671 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5433 transitions. Word has length 102 [2021-11-12 23:57:29,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:57:29,672 INFO L470 AbstractCegarLoop]: Abstraction has 3882 states and 5433 transitions. [2021-11-12 23:57:29,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 23:57:29,672 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5433 transitions. [2021-11-12 23:57:29,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-12 23:57:29,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:57:29,676 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:57:29,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:57:29,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:57:29,890 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 23:57:29,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:57:29,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1027753203, now seen corresponding path program 1 times [2021-11-12 23:57:29,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:57:29,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511870674] [2021-11-12 23:57:29,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:57:29,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:57:29,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:57:29,904 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:57:29,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:57:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:57:40,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 4369 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:57:40,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:57:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-11-12 23:57:43,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:57:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-12 23:57:45,679 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:57:45,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511870674] [2021-11-12 23:57:45,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511870674] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:57:45,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [951899361] [2021-11-12 23:57:45,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:57:45,680 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:57:45,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:57:45,680 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:57:45,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-12 23:57:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:57:48,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 4369 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:57:48,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:57:51,345 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-12 23:57:51,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:57:53,001 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-12 23:57:53,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [951899361] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:57:53,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:57:53,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 4] total 23 [2021-11-12 23:57:53,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674940972] [2021-11-12 23:57:53,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:57:53,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:57:53,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:57:53,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:57:53,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:57:53,003 INFO L87 Difference]: Start difference. First operand 3882 states and 5433 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 23:57:54,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:57:54,155 INFO L93 Difference]: Finished difference Result 3969 states and 5514 transitions. [2021-11-12 23:57:54,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:57:54,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 122 [2021-11-12 23:57:54,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:57:54,173 INFO L225 Difference]: With dead ends: 3969 [2021-11-12 23:57:54,173 INFO L226 Difference]: Without dead ends: 3967 [2021-11-12 23:57:54,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:57:54,177 INFO L933 BasicCegarLoop]: 5419 mSDtfsCounter, 4802 mSDsluCounter, 11414 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 189.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4807 SdHoareTripleChecker+Valid, 16833 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.87ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 195.16ms IncrementalHoareTripleChecker+Time [2021-11-12 23:57:54,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4807 Valid, 16833 Invalid, 25 Unknown, 0 Unchecked, 27.87ms Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 195.16ms Time] [2021-11-12 23:57:54,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3967 states. [2021-11-12 23:57:54,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3967 to 3965. [2021-11-12 23:57:54,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3965 states, 2564 states have (on average 1.2472698907956319) internal successors, (3198), 2667 states have internal predecessors, (3198), 1158 states have call successors, (1158), 241 states have call predecessors, (1158), 240 states have return successors, (1155), 1123 states have call predecessors, (1155), 1155 states have call successors, (1155) [2021-11-12 23:57:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 5511 transitions. [2021-11-12 23:57:54,524 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 5511 transitions. Word has length 122 [2021-11-12 23:57:54,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:57:54,525 INFO L470 AbstractCegarLoop]: Abstraction has 3965 states and 5511 transitions. [2021-11-12 23:57:54,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 23:57:54,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 5511 transitions. [2021-11-12 23:57:54,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-12 23:57:54,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:57:54,528 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:57:54,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:57:54,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:57:54,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:57:54,942 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:57:54,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:57:54,943 INFO L85 PathProgramCache]: Analyzing trace with hash -355138576, now seen corresponding path program 1 times [2021-11-12 23:57:54,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:57:54,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154983002] [2021-11-12 23:57:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:57:54,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:57:54,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:57:54,949 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:57:54,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:58:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:58:05,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 4334 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:58:05,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:58:07,473 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-11-12 23:58:07,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:58:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-11-12 23:58:08,420 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:58:08,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154983002] [2021-11-12 23:58:08,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154983002] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:58:08,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:58:08,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:58:08,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393697924] [2021-11-12 23:58:08,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:58:08,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:58:08,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:58:08,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:58:08,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:58:08,422 INFO L87 Difference]: Start difference. First operand 3965 states and 5511 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 23:58:09,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:58:09,155 INFO L93 Difference]: Finished difference Result 3971 states and 5516 transitions. [2021-11-12 23:58:09,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:58:09,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 112 [2021-11-12 23:58:09,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:58:09,175 INFO L225 Difference]: With dead ends: 3971 [2021-11-12 23:58:09,175 INFO L226 Difference]: Without dead ends: 3969 [2021-11-12 23:58:09,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:58:09,179 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 181.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5342 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.34ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 186.53ms IncrementalHoareTripleChecker+Time [2021-11-12 23:58:09,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5342 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 22.34ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 186.53ms Time] [2021-11-12 23:58:09,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2021-11-12 23:58:09,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 3969. [2021-11-12 23:58:09,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3969 states, 2567 states have (on average 1.246980911569926) internal successors, (3201), 2670 states have internal predecessors, (3201), 1158 states have call successors, (1158), 242 states have call predecessors, (1158), 241 states have return successors, (1155), 1123 states have call predecessors, (1155), 1155 states have call successors, (1155) [2021-11-12 23:58:09,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3969 states to 3969 states and 5514 transitions. [2021-11-12 23:58:09,589 INFO L78 Accepts]: Start accepts. Automaton has 3969 states and 5514 transitions. Word has length 112 [2021-11-12 23:58:09,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:58:09,589 INFO L470 AbstractCegarLoop]: Abstraction has 3969 states and 5514 transitions. [2021-11-12 23:58:09,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 23:58:09,590 INFO L276 IsEmpty]: Start isEmpty. Operand 3969 states and 5514 transitions. [2021-11-12 23:58:09,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-12 23:58:09,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:58:09,593 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:58:09,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:58:09,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:58:09,806 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:58:09,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:58:09,806 INFO L85 PathProgramCache]: Analyzing trace with hash 893965781, now seen corresponding path program 1 times [2021-11-12 23:58:09,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:58:09,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494036804] [2021-11-12 23:58:09,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:58:09,814 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:58:09,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:58:09,815 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:58:09,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:58:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:58:20,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 4341 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:58:20,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:58:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2021-11-12 23:58:22,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:58:23,409 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2021-11-12 23:58:23,409 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:58:23,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494036804] [2021-11-12 23:58:23,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494036804] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:58:23,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:58:23,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:58:23,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233924941] [2021-11-12 23:58:23,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:58:23,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:58:23,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:58:23,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:58:23,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:58:23,411 INFO L87 Difference]: Start difference. First operand 3969 states and 5514 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-12 23:58:24,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:58:24,140 INFO L93 Difference]: Finished difference Result 3975 states and 5519 transitions. [2021-11-12 23:58:24,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:58:24,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 117 [2021-11-12 23:58:24,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:58:24,157 INFO L225 Difference]: With dead ends: 3975 [2021-11-12 23:58:24,158 INFO L226 Difference]: Without dead ends: 3973 [2021-11-12 23:58:24,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:58:24,161 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 178.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5341 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.19ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 184.18ms IncrementalHoareTripleChecker+Time [2021-11-12 23:58:24,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5341 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 20.19ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 184.18ms Time] [2021-11-12 23:58:24,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3973 states. [2021-11-12 23:58:24,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3973 to 3973. [2021-11-12 23:58:24,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3973 states, 2570 states have (on average 1.246692607003891) internal successors, (3204), 2673 states have internal predecessors, (3204), 1158 states have call successors, (1158), 243 states have call predecessors, (1158), 242 states have return successors, (1155), 1123 states have call predecessors, (1155), 1155 states have call successors, (1155) [2021-11-12 23:58:24,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3973 states to 3973 states and 5517 transitions. [2021-11-12 23:58:24,588 INFO L78 Accepts]: Start accepts. Automaton has 3973 states and 5517 transitions. Word has length 117 [2021-11-12 23:58:24,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:58:24,588 INFO L470 AbstractCegarLoop]: Abstraction has 3973 states and 5517 transitions. [2021-11-12 23:58:24,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-12 23:58:24,589 INFO L276 IsEmpty]: Start isEmpty. Operand 3973 states and 5517 transitions. [2021-11-12 23:58:24,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-12 23:58:24,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:58:24,592 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:58:24,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:58:24,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:58:24,814 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:58:24,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:58:24,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1502444848, now seen corresponding path program 1 times [2021-11-12 23:58:24,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:58:24,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313304250] [2021-11-12 23:58:24,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:58:24,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:58:24,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:58:24,823 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:58:24,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 23:58:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:58:35,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 4348 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:58:35,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:58:37,595 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-12 23:58:37,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:58:38,580 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-12 23:58:38,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:58:38,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313304250] [2021-11-12 23:58:38,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313304250] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:58:38,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:58:38,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:58:38,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450089827] [2021-11-12 23:58:38,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:58:38,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:58:38,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:58:38,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:58:38,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:58:38,582 INFO L87 Difference]: Start difference. First operand 3973 states and 5517 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-12 23:58:39,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:58:39,386 INFO L93 Difference]: Finished difference Result 3979 states and 5522 transitions. [2021-11-12 23:58:39,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:58:39,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 122 [2021-11-12 23:58:39,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:58:39,403 INFO L225 Difference]: With dead ends: 3979 [2021-11-12 23:58:39,404 INFO L226 Difference]: Without dead ends: 3977 [2021-11-12 23:58:39,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:58:39,407 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 183.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5340 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.24ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 189.08ms IncrementalHoareTripleChecker+Time [2021-11-12 23:58:39,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5340 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 21.24ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 189.08ms Time] [2021-11-12 23:58:39,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2021-11-12 23:58:39,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3977. [2021-11-12 23:58:39,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3977 states, 2573 states have (on average 1.2464049747376602) internal successors, (3207), 2676 states have internal predecessors, (3207), 1158 states have call successors, (1158), 244 states have call predecessors, (1158), 243 states have return successors, (1155), 1123 states have call predecessors, (1155), 1155 states have call successors, (1155) [2021-11-12 23:58:39,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3977 states to 3977 states and 5520 transitions. [2021-11-12 23:58:39,807 INFO L78 Accepts]: Start accepts. Automaton has 3977 states and 5520 transitions. Word has length 122 [2021-11-12 23:58:39,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:58:39,809 INFO L470 AbstractCegarLoop]: Abstraction has 3977 states and 5520 transitions. [2021-11-12 23:58:39,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-12 23:58:39,809 INFO L276 IsEmpty]: Start isEmpty. Operand 3977 states and 5520 transitions. [2021-11-12 23:58:39,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-12 23:58:39,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:58:39,829 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:58:39,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:58:40,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:58:40,030 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:58:40,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:58:40,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1260268939, now seen corresponding path program 1 times [2021-11-12 23:58:40,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:58:40,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795508932] [2021-11-12 23:58:40,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:58:40,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:58:40,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:58:40,036 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:58:40,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 23:58:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:58:50,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 4355 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:58:50,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:58:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-11-12 23:58:52,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:58:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-11-12 23:58:53,724 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:58:53,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795508932] [2021-11-12 23:58:53,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795508932] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:58:53,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:58:53,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:58:53,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454547872] [2021-11-12 23:58:53,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:58:53,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:58:53,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:58:53,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:58:53,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:58:53,726 INFO L87 Difference]: Start difference. First operand 3977 states and 5520 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 23:58:54,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:58:54,429 INFO L93 Difference]: Finished difference Result 3983 states and 5525 transitions. [2021-11-12 23:58:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:58:54,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 127 [2021-11-12 23:58:54,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:58:54,446 INFO L225 Difference]: With dead ends: 3983 [2021-11-12 23:58:54,447 INFO L226 Difference]: Without dead ends: 3979 [2021-11-12 23:58:54,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:58:54,450 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 178.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5339 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.04ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 183.86ms IncrementalHoareTripleChecker+Time [2021-11-12 23:58:54,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5339 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 17.04ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 183.86ms Time] [2021-11-12 23:58:54,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2021-11-12 23:58:54,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3979. [2021-11-12 23:58:54,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3979 states, 2575 states have (on average 1.2458252427184466) internal successors, (3208), 2677 states have internal predecessors, (3208), 1158 states have call successors, (1158), 245 states have call predecessors, (1158), 243 states have return successors, (1155), 1123 states have call predecessors, (1155), 1155 states have call successors, (1155) [2021-11-12 23:58:54,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5521 transitions. [2021-11-12 23:58:54,932 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5521 transitions. Word has length 127 [2021-11-12 23:58:54,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:58:54,932 INFO L470 AbstractCegarLoop]: Abstraction has 3979 states and 5521 transitions. [2021-11-12 23:58:54,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 23:58:54,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5521 transitions. [2021-11-12 23:58:54,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-12 23:58:54,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:58:54,938 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:58:55,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-12 23:58:55,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:58:55,154 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:58:55,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:58:55,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1012439472, now seen corresponding path program 1 times [2021-11-12 23:58:55,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:58:55,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151004628] [2021-11-12 23:58:55,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:58:55,159 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:58:55,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:58:55,160 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:58:55,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 23:59:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:59:05,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 4362 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:59:05,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:59:08,114 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2021-11-12 23:59:08,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:59:09,185 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2021-11-12 23:59:09,185 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:59:09,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151004628] [2021-11-12 23:59:09,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151004628] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:59:09,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:59:09,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:59:09,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129160512] [2021-11-12 23:59:09,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:59:09,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:59:09,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:59:09,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:59:09,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:59:09,190 INFO L87 Difference]: Start difference. First operand 3979 states and 5521 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-12 23:59:09,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:59:09,956 INFO L93 Difference]: Finished difference Result 4043 states and 5580 transitions. [2021-11-12 23:59:09,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:59:09,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 132 [2021-11-12 23:59:09,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:59:09,969 INFO L225 Difference]: With dead ends: 4043 [2021-11-12 23:59:09,969 INFO L226 Difference]: Without dead ends: 3883 [2021-11-12 23:59:09,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:59:09,972 INFO L933 BasicCegarLoop]: 5379 mSDtfsCounter, 5291 mSDsluCounter, 10836 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 151.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5291 SdHoareTripleChecker+Valid, 16215 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.42ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 156.04ms IncrementalHoareTripleChecker+Time [2021-11-12 23:59:09,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5291 Valid, 16215 Invalid, 20 Unknown, 0 Unchecked, 17.42ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 156.04ms Time] [2021-11-12 23:59:09,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3883 states. [2021-11-12 23:59:10,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3883 to 3879. [2021-11-12 23:59:10,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3879 states, 2514 states have (on average 1.249005568814638) internal successors, (3140), 2610 states have internal predecessors, (3140), 1122 states have call successors, (1122), 241 states have call predecessors, (1122), 241 states have return successors, (1122), 1092 states have call predecessors, (1122), 1122 states have call successors, (1122) [2021-11-12 23:59:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3879 states to 3879 states and 5384 transitions. [2021-11-12 23:59:10,394 INFO L78 Accepts]: Start accepts. Automaton has 3879 states and 5384 transitions. Word has length 132 [2021-11-12 23:59:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:59:10,394 INFO L470 AbstractCegarLoop]: Abstraction has 3879 states and 5384 transitions. [2021-11-12 23:59:10,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-12 23:59:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 3879 states and 5384 transitions. [2021-11-12 23:59:10,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-12 23:59:10,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:59:10,399 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:59:10,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:59:10,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:59:10,601 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:59:10,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:59:10,602 INFO L85 PathProgramCache]: Analyzing trace with hash 186369763, now seen corresponding path program 1 times [2021-11-12 23:59:10,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:59:10,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852875613] [2021-11-12 23:59:10,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:59:10,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:59:10,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:59:10,607 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:59:10,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 23:59:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:59:21,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 4507 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:59:21,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:59:24,694 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 69 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-12 23:59:24,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:59:27,355 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-12 23:59:27,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:59:27,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852875613] [2021-11-12 23:59:27,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852875613] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:59:27,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [901774088] [2021-11-12 23:59:27,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:59:27,356 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:59:27,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:59:27,357 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:59:27,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-12 23:59:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:59:30,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 4507 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:59:30,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:59:30,831 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-12 23:59:30,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:59:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-12 23:59:31,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [901774088] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:59:31,230 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:59:31,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [15, 15] total 19 [2021-11-12 23:59:31,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695361359] [2021-11-12 23:59:31,231 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:59:31,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:59:31,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:59:31,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:59:31,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:59:31,232 INFO L87 Difference]: Start difference. First operand 3879 states and 5384 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-12 23:59:31,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:59:31,600 INFO L93 Difference]: Finished difference Result 7676 states and 10676 transitions. [2021-11-12 23:59:31,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:59:31,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 155 [2021-11-12 23:59:31,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:59:31,617 INFO L225 Difference]: With dead ends: 7676 [2021-11-12 23:59:31,617 INFO L226 Difference]: Without dead ends: 3880 [2021-11-12 23:59:31,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 599 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:59:31,647 INFO L933 BasicCegarLoop]: 5219 mSDtfsCounter, 0 mSDsluCounter, 5215 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10434 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.38ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.72ms IncrementalHoareTripleChecker+Time [2021-11-12 23:59:31,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10434 Invalid, 5 Unknown, 0 Unchecked, 11.38ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 54.72ms Time] [2021-11-12 23:59:31,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3880 states. [2021-11-12 23:59:32,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3880 to 3880. [2021-11-12 23:59:32,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3880 states, 2515 states have (on average 1.2489065606361829) internal successors, (3141), 2611 states have internal predecessors, (3141), 1122 states have call successors, (1122), 241 states have call predecessors, (1122), 241 states have return successors, (1122), 1092 states have call predecessors, (1122), 1122 states have call successors, (1122) [2021-11-12 23:59:32,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 5385 transitions. [2021-11-12 23:59:32,151 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 5385 transitions. Word has length 155 [2021-11-12 23:59:32,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:59:32,152 INFO L470 AbstractCegarLoop]: Abstraction has 3880 states and 5385 transitions. [2021-11-12 23:59:32,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-12 23:59:32,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 5385 transitions. [2021-11-12 23:59:32,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-12 23:59:32,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:59:32,156 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:59:32,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-12 23:59:32,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:59:32,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:59:32,562 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:59:32,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:59:32,562 INFO L85 PathProgramCache]: Analyzing trace with hash 887434341, now seen corresponding path program 1 times [2021-11-12 23:59:32,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:59:32,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935962106] [2021-11-12 23:59:32,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:59:32,567 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:59:32,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:59:32,569 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:59:32,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 23:59:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:59:43,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 4509 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:59:43,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:59:46,924 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 69 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-12 23:59:46,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:59:49,573 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-12 23:59:49,573 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:59:49,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935962106] [2021-11-12 23:59:49,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935962106] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:59:49,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [188997706] [2021-11-12 23:59:49,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:59:49,574 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:59:49,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:59:49,575 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:59:49,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-12 23:59:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:59:52,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 4509 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:59:52,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:59:53,394 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-12 23:59:53,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:59:54,091 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-12 23:59:54,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [188997706] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:59:54,092 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:59:54,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [15, 15] total 21 [2021-11-12 23:59:54,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282198962] [2021-11-12 23:59:54,092 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:59:54,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:59:54,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:59:54,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:59:54,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2021-11-12 23:59:54,094 INFO L87 Difference]: Start difference. First operand 3880 states and 5385 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-12 23:59:54,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:59:54,850 INFO L93 Difference]: Finished difference Result 7682 states and 10683 transitions. [2021-11-12 23:59:54,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:59:54,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 155 [2021-11-12 23:59:54,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:59:54,873 INFO L225 Difference]: With dead ends: 7682 [2021-11-12 23:59:54,873 INFO L226 Difference]: Without dead ends: 3885 [2021-11-12 23:59:54,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:59:54,896 INFO L933 BasicCegarLoop]: 5217 mSDtfsCounter, 7 mSDsluCounter, 10430 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 15647 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.18ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.62ms IncrementalHoareTripleChecker+Time [2021-11-12 23:59:54,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 15647 Invalid, 14 Unknown, 0 Unchecked, 19.18ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 112.62ms Time] [2021-11-12 23:59:54,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2021-11-12 23:59:55,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3882. [2021-11-12 23:59:55,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 2517 states have (on average 1.248708780294001) internal successors, (3143), 2613 states have internal predecessors, (3143), 1122 states have call successors, (1122), 241 states have call predecessors, (1122), 241 states have return successors, (1122), 1092 states have call predecessors, (1122), 1122 states have call successors, (1122) [2021-11-12 23:59:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5387 transitions. [2021-11-12 23:59:55,429 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5387 transitions. Word has length 155 [2021-11-12 23:59:55,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:59:55,430 INFO L470 AbstractCegarLoop]: Abstraction has 3882 states and 5387 transitions. [2021-11-12 23:59:55,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-12 23:59:55,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5387 transitions. [2021-11-12 23:59:55,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-12 23:59:55,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:59:55,433 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:59:55,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-12 23:59:55,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-12 23:59:55,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:59:55,846 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:59:55,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:59:55,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1474240355, now seen corresponding path program 1 times [2021-11-12 23:59:55,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:59:55,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256900903] [2021-11-12 23:59:55,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:59:55,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:59:55,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:59:55,853 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:59:55,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 00:00:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 00:00:06,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 4509 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-13 00:00:06,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 00:00:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 69 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-13 00:00:09,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 00:00:12,610 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 00:00:12,610 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 00:00:12,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256900903] [2021-11-13 00:00:12,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256900903] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 00:00:12,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [180762089] [2021-11-13 00:00:12,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 00:00:12,611 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 00:00:12,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 00:00:12,618 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 00:00:12,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-13 00:00:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 00:00:44,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 4509 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-13 00:00:44,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 00:00:48,248 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-13 00:00:48,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 00:00:50,405 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-13 00:00:50,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [180762089] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 00:00:50,406 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 00:00:50,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [15, 15] total 23 [2021-11-13 00:00:50,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20424949] [2021-11-13 00:00:50,407 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 00:00:50,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 00:00:50,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 00:00:50,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 00:00:50,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-13 00:00:50,409 INFO L87 Difference]: Start difference. First operand 3882 states and 5387 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-13 00:00:51,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 00:00:51,577 INFO L93 Difference]: Finished difference Result 3890 states and 5393 transitions. [2021-11-13 00:00:51,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 00:00:51,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 155 [2021-11-13 00:00:51,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 00:00:51,589 INFO L225 Difference]: With dead ends: 3890 [2021-11-13 00:00:51,589 INFO L226 Difference]: Without dead ends: 3888 [2021-11-13 00:00:51,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-11-13 00:00:51,593 INFO L933 BasicCegarLoop]: 5262 mSDtfsCounter, 4589 mSDsluCounter, 21639 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 162.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4592 SdHoareTripleChecker+Valid, 26901 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.05ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 165.89ms IncrementalHoareTripleChecker+Time [2021-11-13 00:00:51,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4592 Valid, 26901 Invalid, 21 Unknown, 0 Unchecked, 34.05ms Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 165.89ms Time] [2021-11-13 00:00:51,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-11-13 00:00:52,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3886. [2021-11-13 00:00:52,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3886 states, 2520 states have (on average 1.2484126984126984) internal successors, (3146), 2616 states have internal predecessors, (3146), 1122 states have call successors, (1122), 242 states have call predecessors, (1122), 242 states have return successors, (1122), 1092 states have call predecessors, (1122), 1122 states have call successors, (1122) [2021-11-13 00:00:52,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3886 states to 3886 states and 5390 transitions. [2021-11-13 00:00:52,107 INFO L78 Accepts]: Start accepts. Automaton has 3886 states and 5390 transitions. Word has length 155 [2021-11-13 00:00:52,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 00:00:52,108 INFO L470 AbstractCegarLoop]: Abstraction has 3886 states and 5390 transitions. [2021-11-13 00:00:52,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-13 00:00:52,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3886 states and 5390 transitions. [2021-11-13 00:00:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-13 00:00:52,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 00:00:52,117 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 00:00:52,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-13 00:00:52,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-13 00:00:52,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 00:00:52,531 INFO L402 AbstractCegarLoop]: === Iteration 19 === 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)] === [2021-11-13 00:00:52,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 00:00:52,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1506475053, now seen corresponding path program 1 times [2021-11-13 00:00:52,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 00:00:52,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636861080] [2021-11-13 00:00:52,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 00:00:52,543 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 00:00:52,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 00:00:52,545 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 00:00:52,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-13 00:01:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 00:01:04,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 4666 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-13 00:01:04,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 00:01:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 69 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-13 00:01:08,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 00:01:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 00:01:11,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 00:01:11,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636861080] [2021-11-13 00:01:11,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636861080] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 00:01:11,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [616134574] [2021-11-13 00:01:11,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 00:01:11,955 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 00:01:11,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 00:01:11,962 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 00:01:11,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-13 00:01:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 00:01:48,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 4666 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-13 00:01:48,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 00:01:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-13 00:01:53,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 00:01:56,106 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-13 00:01:56,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [616134574] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 00:01:56,107 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 00:01:56,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [15, 15] total 23 [2021-11-13 00:01:56,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540126422] [2021-11-13 00:01:56,107 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 00:01:56,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 00:01:56,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 00:01:56,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 00:01:56,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-13 00:01:56,110 INFO L87 Difference]: Start difference. First operand 3886 states and 5390 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (59), 4 states have call predecessors, (59), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-13 00:01:57,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 00:01:57,246 INFO L93 Difference]: Finished difference Result 3894 states and 5396 transitions. [2021-11-13 00:01:57,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 00:01:57,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (59), 4 states have call predecessors, (59), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 204 [2021-11-13 00:01:57,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 00:01:57,259 INFO L225 Difference]: With dead ends: 3894 [2021-11-13 00:01:57,259 INFO L226 Difference]: Without dead ends: 3892 [2021-11-13 00:01:57,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-11-13 00:01:57,262 INFO L933 BasicCegarLoop]: 5244 mSDtfsCounter, 5044 mSDsluCounter, 15769 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 130.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5047 SdHoareTripleChecker+Valid, 21013 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.54ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 133.58ms IncrementalHoareTripleChecker+Time [2021-11-13 00:01:57,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5047 Valid, 21013 Invalid, 17 Unknown, 0 Unchecked, 26.54ms Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 133.58ms Time] [2021-11-13 00:01:57,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2021-11-13 00:01:57,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 3890. [2021-11-13 00:01:57,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3890 states, 2523 states have (on average 1.2477209671026557) internal successors, (3148), 2619 states have internal predecessors, (3148), 1122 states have call successors, (1122), 243 states have call predecessors, (1122), 243 states have return successors, (1122), 1092 states have call predecessors, (1122), 1122 states have call successors, (1122) [2021-11-13 00:01:57,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3890 states to 3890 states and 5392 transitions. [2021-11-13 00:01:57,761 INFO L78 Accepts]: Start accepts. Automaton has 3890 states and 5392 transitions. Word has length 204 [2021-11-13 00:01:57,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 00:01:57,762 INFO L470 AbstractCegarLoop]: Abstraction has 3890 states and 5392 transitions. [2021-11-13 00:01:57,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (59), 4 states have call predecessors, (59), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-13 00:01:57,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3890 states and 5392 transitions. [2021-11-13 00:01:57,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-13 00:01:57,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 00:01:57,775 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 00:01:57,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-13 00:01:58,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-11-13 00:01:58,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 00:01:58,199 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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)] === [2021-11-13 00:01:58,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 00:01:58,199 INFO L85 PathProgramCache]: Analyzing trace with hash -610629608, now seen corresponding path program 1 times [2021-11-13 00:01:58,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 00:01:58,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723665606] [2021-11-13 00:01:58,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 00:01:58,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 00:01:58,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 00:01:58,207 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 00:01:58,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-13 00:02:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 00:02:11,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 4750 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-13 00:02:11,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 00:02:15,351 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-13 00:02:15,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 00:02:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-13 00:02:18,919 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 00:02:18,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723665606] [2021-11-13 00:02:18,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723665606] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 00:02:18,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [348700607] [2021-11-13 00:02:18,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 00:02:18,920 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 00:02:18,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 00:02:18,921 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 00:02:18,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-13 00:02:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 00:02:22,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 4750 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 00:02:22,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 00:02:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-13 00:02:25,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 00:02:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-11-13 00:02:30,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [348700607] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 00:02:30,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-13 00:02:30,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15, 15, 9] total 28 [2021-11-13 00:02:30,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631141044] [2021-11-13 00:02:30,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 00:02:30,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 00:02:30,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 00:02:30,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 00:02:30,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2021-11-13 00:02:30,250 INFO L87 Difference]: Start difference. First operand 3890 states and 5392 transitions. Second operand has 8 states, 7 states have (on average 18.142857142857142) internal successors, (127), 6 states have internal predecessors, (127), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-13 00:02:34,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 00:02:34,366 INFO L93 Difference]: Finished difference Result 7713 states and 10724 transitions. [2021-11-13 00:02:34,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 00:02:34,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 18.142857142857142) internal successors, (127), 6 states have internal predecessors, (127), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) Word has length 242 [2021-11-13 00:02:34,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 00:02:34,384 INFO L225 Difference]: With dead ends: 7713 [2021-11-13 00:02:34,384 INFO L226 Difference]: Without dead ends: 3906 [2021-11-13 00:02:34,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 937 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=91, Invalid=901, Unknown=0, NotChecked=0, Total=992 [2021-11-13 00:02:34,416 INFO L933 BasicCegarLoop]: 5200 mSDtfsCounter, 11 mSDsluCounter, 31156 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1959.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 36356 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.44ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2023.65ms IncrementalHoareTripleChecker+Time [2021-11-13 00:02:34,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 36356 Invalid, 216 Unknown, 0 Unchecked, 44.44ms Time], IncrementalHoareTripleChecker [10 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 2023.65ms Time] [2021-11-13 00:02:34,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3906 states. [2021-11-13 00:02:34,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3906 to 3896. [2021-11-13 00:02:34,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3896 states, 2527 states have (on average 1.2473288484368816) internal successors, (3152), 2621 states have internal predecessors, (3152), 1124 states have call successors, (1124), 243 states have call predecessors, (1124), 243 states have return successors, (1124), 1094 states have call predecessors, (1124), 1124 states have call successors, (1124) [2021-11-13 00:02:35,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 5400 transitions. [2021-11-13 00:02:35,009 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 5400 transitions. Word has length 242 [2021-11-13 00:02:35,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 00:02:35,010 INFO L470 AbstractCegarLoop]: Abstraction has 3896 states and 5400 transitions. [2021-11-13 00:02:35,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 18.142857142857142) internal successors, (127), 6 states have internal predecessors, (127), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-13 00:02:35,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 5400 transitions. [2021-11-13 00:02:35,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-13 00:02:35,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 00:02:35,026 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 00:02:35,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-13 00:02:35,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-13 00:02:35,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 00:02:35,442 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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)] === [2021-11-13 00:02:35,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 00:02:35,443 INFO L85 PathProgramCache]: Analyzing trace with hash -201724075, now seen corresponding path program 1 times [2021-11-13 00:02:35,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 00:02:35,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065233751] [2021-11-13 00:02:35,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 00:02:35,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 00:02:35,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 00:02:35,451 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 00:02:35,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-13 00:02:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 00:02:49,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 4760 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-13 00:02:49,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 00:02:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-13 00:02:54,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 00:02:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-13 00:02:57,671 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 00:02:57,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065233751] [2021-11-13 00:02:57,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065233751] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 00:02:57,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1650627403] [2021-11-13 00:02:57,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 00:02:57,673 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 00:02:57,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 00:02:57,686 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 00:02:57,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-13 00:03:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 00:03:34,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 4760 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 00:03:34,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 00:03:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-13 00:03:36,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 00:03:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-13 00:03:38,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1650627403] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 00:03:38,004 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 00:03:38,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [15, 15] total 23 [2021-11-13 00:03:38,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195314510] [2021-11-13 00:03:38,005 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 00:03:38,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 00:03:38,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 00:03:38,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 00:03:38,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-13 00:03:38,006 INFO L87 Difference]: Start difference. First operand 3896 states and 5400 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 5 states have internal predecessors, (144), 2 states have call successors, (46), 4 states have call predecessors, (46), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-13 00:03:40,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:03:41,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 00:03:41,998 INFO L93 Difference]: Finished difference Result 3898 states and 5401 transitions. [2021-11-13 00:03:41,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 00:03:41,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 5 states have internal predecessors, (144), 2 states have call successors, (46), 4 states have call predecessors, (46), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 246 [2021-11-13 00:03:41,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 00:03:42,011 INFO L225 Difference]: With dead ends: 3898 [2021-11-13 00:03:42,011 INFO L226 Difference]: Without dead ends: 3896 [2021-11-13 00:03:42,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 959 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-11-13 00:03:42,014 INFO L933 BasicCegarLoop]: 5230 mSDtfsCounter, 25 mSDsluCounter, 26112 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2824.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 31342 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.93ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2834.01ms IncrementalHoareTripleChecker+Time [2021-11-13 00:03:42,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 31342 Invalid, 21 Unknown, 0 Unchecked, 37.93ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2834.01ms Time] [2021-11-13 00:03:42,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-11-13 00:03:42,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3896. [2021-11-13 00:03:42,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3896 states, 2527 states have (on average 1.2465373961218837) internal successors, (3150), 2621 states have internal predecessors, (3150), 1124 states have call successors, (1124), 243 states have call predecessors, (1124), 243 states have return successors, (1124), 1094 states have call predecessors, (1124), 1124 states have call successors, (1124) [2021-11-13 00:03:42,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 5398 transitions. [2021-11-13 00:03:42,560 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 5398 transitions. Word has length 246 [2021-11-13 00:03:42,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 00:03:42,561 INFO L470 AbstractCegarLoop]: Abstraction has 3896 states and 5398 transitions. [2021-11-13 00:03:42,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 5 states have internal predecessors, (144), 2 states have call successors, (46), 4 states have call predecessors, (46), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-13 00:03:42,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 5398 transitions. [2021-11-13 00:03:42,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2021-11-13 00:03:42,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 00:03:42,588 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 12, 12, 12, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 00:03:42,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-11-13 00:03:42,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2021-11-13 00:03:43,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 00:03:43,003 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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)] === [2021-11-13 00:03:43,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 00:03:43,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1543755929, now seen corresponding path program 1 times [2021-11-13 00:03:43,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 00:03:43,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3513479] [2021-11-13 00:03:43,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 00:03:43,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 00:03:43,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 00:03:43,011 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 00:03:43,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-13 00:03:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 00:03:58,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 5939 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-13 00:03:58,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 00:04:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 170 proven. 3 refuted. 0 times theorem prover too weak. 1675 trivial. 0 not checked. [2021-11-13 00:04:07,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 00:04:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 3 proven. 61 refuted. 0 times theorem prover too weak. 1784 trivial. 0 not checked. [2021-11-13 00:04:12,819 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 00:04:12,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3513479] [2021-11-13 00:04:12,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3513479] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 00:04:12,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [348966370] [2021-11-13 00:04:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 00:04:12,820 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 00:04:12,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 00:04:12,821 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 00:04:12,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-13 00:04:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 00:04:16,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 5939 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 00:04:16,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 00:04:18,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 660 proven. 0 refuted. 0 times theorem prover too weak. 1188 trivial. 0 not checked. [2021-11-13 00:04:18,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 00:04:20,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1848 trivial. 0 not checked. [2021-11-13 00:04:20,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [348966370] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 00:04:20,603 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 00:04:20,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [15, 15] total 19 [2021-11-13 00:04:20,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055093867] [2021-11-13 00:04:20,604 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 00:04:20,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 00:04:20,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 00:04:20,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 00:04:20,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-11-13 00:04:20,607 INFO L87 Difference]: Start difference. First operand 3896 states and 5398 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2021-11-13 00:04:21,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 00:04:21,038 INFO L93 Difference]: Finished difference Result 7710 states and 10729 transitions. [2021-11-13 00:04:21,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 00:04:21,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) Word has length 614 [2021-11-13 00:04:21,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 00:04:21,052 INFO L225 Difference]: With dead ends: 7710 [2021-11-13 00:04:21,052 INFO L226 Difference]: Without dead ends: 3897 [2021-11-13 00:04:21,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2452 GetRequests, 2435 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-11-13 00:04:21,068 INFO L933 BasicCegarLoop]: 5219 mSDtfsCounter, 0 mSDsluCounter, 5215 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10434 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.58ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.03ms IncrementalHoareTripleChecker+Time [2021-11-13 00:04:21,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10434 Invalid, 5 Unknown, 0 Unchecked, 10.58ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 48.03ms Time] [2021-11-13 00:04:21,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2021-11-13 00:04:21,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3897. [2021-11-13 00:04:21,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3897 states, 2528 states have (on average 1.2464398734177216) internal successors, (3151), 2622 states have internal predecessors, (3151), 1124 states have call successors, (1124), 243 states have call predecessors, (1124), 243 states have return successors, (1124), 1094 states have call predecessors, (1124), 1124 states have call successors, (1124) [2021-11-13 00:04:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 5399 transitions. [2021-11-13 00:04:21,567 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 5399 transitions. Word has length 614 [2021-11-13 00:04:21,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 00:04:21,568 INFO L470 AbstractCegarLoop]: Abstraction has 3897 states and 5399 transitions. [2021-11-13 00:04:21,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2021-11-13 00:04:21,569 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 5399 transitions. [2021-11-13 00:04:21,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2021-11-13 00:04:21,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 00:04:21,592 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 00:04:21,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-13 00:04:21,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-13 00:04:21,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 00:04:21,993 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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)] === [2021-11-13 00:04:21,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 00:04:21,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1639913259, now seen corresponding path program 1 times [2021-11-13 00:04:22,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 00:04:22,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780136298] [2021-11-13 00:04:22,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 00:04:22,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 00:04:22,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 00:04:22,002 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 00:04:22,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-13 00:04:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 00:04:36,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 5828 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-13 00:04:36,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 00:04:43,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 1507 trivial. 0 not checked. [2021-11-13 00:04:43,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 00:04:47,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 1555 trivial. 0 not checked. [2021-11-13 00:04:47,896 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 00:04:47,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780136298] [2021-11-13 00:04:47,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780136298] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 00:04:47,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2014328108] [2021-11-13 00:04:47,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 00:04:47,897 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 00:04:47,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 00:04:47,898 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 00:04:47,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cf75dfc-ea88-43bd-9aca-110f67718e7f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-13 00:04:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 00:04:52,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 5828 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 00:04:52,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 00:04:59,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2021-11-13 00:05:01,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 933 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2021-11-13 00:05:01,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 00:05:04,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1591 trivial. 0 not checked. [2021-11-13 00:05:04,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2014328108] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 00:05:04,657 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 00:05:04,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [15, 15] total 25 [2021-11-13 00:05:04,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007689835] [2021-11-13 00:05:04,658 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 00:05:04,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 00:05:04,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 00:05:04,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 00:05:04,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=543, Unknown=0, NotChecked=0, Total=600 [2021-11-13 00:05:04,661 INFO L87 Difference]: Start difference. First operand 3897 states and 5399 transitions. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 5 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (75), 5 states have call predecessors, (75), 5 states have call successors, (75) [2021-11-13 00:05:07,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:05:09,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:05:11,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:05:14,920 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:05:16,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:05:18,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:05:20,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:05:22,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:05:34,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:05:37,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:05:39,598 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:05:40,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:05:44,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:05:47,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:05:53,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:05:55,012 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:05:57,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:06:00,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:06:02,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:06:04,890 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:06:08,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:06:10,450 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:06:12,465 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:06:14,539 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:06:17,313 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:06:18,967 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:06:20,131 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:06:23,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:06:27,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:06:28,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:06:31,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:06:33,110 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 00:06:35,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []