./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:43:44,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:43:44,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:43:44,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:43:44,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:43:44,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:43:44,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:43:44,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:43:44,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:43:44,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:43:44,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:43:44,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:43:44,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:43:44,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:43:44,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:43:44,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:43:44,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:43:44,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:43:44,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:43:44,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:43:44,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:43:44,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:43:44,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:43:44,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:43:44,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:43:44,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:43:44,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:43:44,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:43:44,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:43:44,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:43:44,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:43:44,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:43:44,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:43:44,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:43:44,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:43:44,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:43:44,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:43:44,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:43:44,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:43:44,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:43:44,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:43:44,586 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:43:44,613 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:43:44,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:43:44,614 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:43:44,614 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:43:44,614 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:43:44,615 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:43:44,615 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:43:44,615 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:43:44,615 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:43:44,616 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:43:44,616 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:43:44,616 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:43:44,616 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:43:44,616 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:43:44,617 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:43:44,617 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:43:44,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:43:44,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:43:44,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:43:44,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:43:44,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:43:44,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:43:44,619 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:43:44,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:43:44,619 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:43:44,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:43:44,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:43:44,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:43:44,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:43:44,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:43:44,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:43:44,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:43:44,621 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:43:44,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:43:44,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:43:44,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:43:44,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:43:44,622 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_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 [2021-11-19 14:43:45,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:43:45,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:43:45,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:43:45,100 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:43:45,101 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:43:45,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-19 14:43:45,204 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/data/b2e0c8554/3f80b8e396c54a5b897a1a5dc2240940/FLAG057ad093d [2021-11-19 14:43:46,577 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:43:46,577 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-19 14:43:46,636 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/data/b2e0c8554/3f80b8e396c54a5b897a1a5dc2240940/FLAG057ad093d [2021-11-19 14:43:46,720 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/data/b2e0c8554/3f80b8e396c54a5b897a1a5dc2240940 [2021-11-19 14:43:46,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:43:46,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:43:46,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:43:46,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:43:46,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:43:46,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:43:46" (1/1) ... [2021-11-19 14:43:46,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f03f5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:43:46, skipping insertion in model container [2021-11-19 14:43:46,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:43:46" (1/1) ... [2021-11-19 14:43:46,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:43:47,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:43:49,335 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:43:49,337 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:43:50,533 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2021-11-19 14:43:50,536 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2021-11-19 14:43:50,537 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2021-11-19 14:43:50,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2021-11-19 14:43:50,574 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:43:50,679 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:43:50,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4f2de3a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:43:50, skipping insertion in model container [2021-11-19 14:43:50,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:43:50,680 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:43:50,682 INFO L158 Benchmark]: Toolchain (without parser) took 3955.56ms. Allocated memory was 94.4MB in the beginning and 144.7MB in the end (delta: 50.3MB). Free memory was 44.7MB in the beginning and 95.9MB in the end (delta: -51.2MB). Peak memory consumption was 52.2MB. Max. memory is 16.1GB. [2021-11-19 14:43:50,683 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 94.4MB. Free memory was 64.7MB in the beginning and 64.6MB in the end (delta: 21.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:43:50,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3949.97ms. Allocated memory was 94.4MB in the beginning and 144.7MB in the end (delta: 50.3MB). Free memory was 44.4MB in the beginning and 96.7MB in the end (delta: -52.3MB). Peak memory consumption was 52.2MB. Max. memory is 16.1GB. [2021-11-19 14:43:50,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 94.4MB. Free memory was 64.7MB in the beginning and 64.6MB in the end (delta: 21.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3949.97ms. Allocated memory was 94.4MB in the beginning and 144.7MB in the end (delta: 50.3MB). Free memory was 44.4MB in the beginning and 96.7MB in the end (delta: -52.3MB). Peak memory consumption was 52.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6377]: 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_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:43:53,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:43:53,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:43:53,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:43:53,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:43:53,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:43:53,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:43:53,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:43:53,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:43:53,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:43:53,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:43:53,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:43:53,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:43:53,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:43:53,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:43:53,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:43:53,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:43:53,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:43:53,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:43:53,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:43:53,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:43:53,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:43:53,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:43:53,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:43:53,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:43:53,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:43:53,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:43:53,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:43:53,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:43:53,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:43:53,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:43:53,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:43:53,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:43:53,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:43:53,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:43:53,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:43:53,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:43:53,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:43:53,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:43:53,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:43:53,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:43:53,593 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:43:53,652 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:43:53,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:43:53,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:43:53,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:43:53,655 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:43:53,656 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:43:53,656 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:43:53,656 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:43:53,657 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:43:53,657 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:43:53,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:43:53,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:43:53,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:43:53,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:43:53,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:43:53,662 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:43:53,662 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:43:53,662 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:43:53,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:43:53,663 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:43:53,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:43:53,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:43:53,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:43:53,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:43:53,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:43:53,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:43:53,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:43:53,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:43:53,666 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:43:53,666 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:43:53,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:43:53,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:43:53,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:43:53,667 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_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 [2021-11-19 14:43:54,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:43:54,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:43:54,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:43:54,143 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:43:54,144 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:43:54,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-19 14:43:54,226 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/data/42905e304/924ea276860a498da0c9d2cfbb8ff651/FLAG4aea3bbc5 [2021-11-19 14:43:55,570 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:43:55,571 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-19 14:43:55,648 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/data/42905e304/924ea276860a498da0c9d2cfbb8ff651/FLAG4aea3bbc5 [2021-11-19 14:43:55,672 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/data/42905e304/924ea276860a498da0c9d2cfbb8ff651 [2021-11-19 14:43:55,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:43:55,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:43:55,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:43:55,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:43:55,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:43:55,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:43:55" (1/1) ... [2021-11-19 14:43:55,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c5aa2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:43:55, skipping insertion in model container [2021-11-19 14:43:55,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:43:55" (1/1) ... [2021-11-19 14:43:55,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:43:55,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:43:59,490 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2021-11-19 14:43:59,494 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2021-11-19 14:43:59,495 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2021-11-19 14:43:59,496 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2021-11-19 14:43:59,528 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:43:59,626 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:43:59,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:44:00,259 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2021-11-19 14:44:00,260 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2021-11-19 14:44:00,261 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2021-11-19 14:44:00,261 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2021-11-19 14:44:00,272 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:00,339 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:44:00,878 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2021-11-19 14:44:00,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2021-11-19 14:44:00,880 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2021-11-19 14:44:00,882 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2021-11-19 14:44:00,893 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:01,213 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:44:01,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:01 WrapperNode [2021-11-19 14:44:01,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:01,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:44:01,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:44:01,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:44:01,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:01" (1/1) ... [2021-11-19 14:44:01,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:01" (1/1) ... [2021-11-19 14:44:01,799 INFO L137 Inliner]: procedures = 416, calls = 2544, calls flagged for inlining = 197, calls inlined = 171, statements flattened = 4799 [2021-11-19 14:44:01,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:44:01,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:44:01,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:44:01,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:44:01,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:01" (1/1) ... [2021-11-19 14:44:01,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:01" (1/1) ... [2021-11-19 14:44:01,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:01" (1/1) ... [2021-11-19 14:44:01,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:01" (1/1) ... [2021-11-19 14:44:02,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:01" (1/1) ... [2021-11-19 14:44:02,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:01" (1/1) ... [2021-11-19 14:44:02,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:01" (1/1) ... [2021-11-19 14:44:02,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:44:02,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:44:02,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:44:02,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:44:02,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:01" (1/1) ... [2021-11-19 14:44:02,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:44:02,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:44:02,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:44:02,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:44:02,250 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-19 14:44:02,250 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-19 14:44:02,250 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_detach [2021-11-19 14:44:02,251 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_detach [2021-11-19 14:44:02,251 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-11-19 14:44:02,251 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-11-19 14:44:02,252 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 14:44:02,252 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 14:44:02,252 INFO L130 BoogieDeclarations]: Found specification of procedure mhz_3288_power [2021-11-19 14:44:02,252 INFO L138 BoogieDeclarations]: Found implementation of procedure mhz_3288_power [2021-11-19 14:44:02,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:44:02,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:44:02,253 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_request_io [2021-11-19 14:44:02,253 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_request_io [2021-11-19 14:44:02,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_70 [2021-11-19 14:44:02,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_70 [2021-11-19 14:44:02,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:44:02,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:44:02,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 14:44:02,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 14:44:02,254 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-19 14:44:02,254 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-19 14:44:02,255 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_resume [2021-11-19 14:44:02,255 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_resume [2021-11-19 14:44:02,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 14:44:02,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 14:44:02,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:44:02,256 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_suspend [2021-11-19 14:44:02,256 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_suspend [2021-11-19 14:44:02,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 14:44:02,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:44:02,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:44:02,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:44:02,257 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 14:44:02,257 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 14:44:02,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-19 14:44:02,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-19 14:44:02,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 14:44:02,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 14:44:02,259 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-19 14:44:02,259 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-19 14:44:02,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-19 14:44:02,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-19 14:44:02,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 14:44:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 14:44:02,262 INFO L130 BoogieDeclarations]: Found specification of procedure cvt_ascii_address [2021-11-19 14:44:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure cvt_ascii_address [2021-11-19 14:44:02,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:44:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:44:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:44:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 14:44:02,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 14:44:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 14:44:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 14:44:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_smc91c92_cs_driver_exit_13_2 [2021-11-19 14:44:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_smc91c92_cs_driver_exit_13_2 [2021-11-19 14:44:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:44:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 14:44:02,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 14:44:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 14:44:02,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 14:44:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:44:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-19 14:44:02,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-19 14:44:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure smc_tx_timeout [2021-11-19 14:44:02,268 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_tx_timeout [2021-11-19 14:44:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-19 14:44:02,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-19 14:44:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure smc_reset [2021-11-19 14:44:02,268 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_reset [2021-11-19 14:44:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-11-19 14:44:02,269 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-11-19 14:44:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-19 14:44:02,269 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-19 14:44:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:44:02,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:44:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:44:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:44:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:44:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:44:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 14:44:02,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 14:44:02,273 INFO L130 BoogieDeclarations]: Found specification of procedure smc_hardware_send_packet [2021-11-19 14:44:02,273 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_hardware_send_packet [2021-11-19 14:44:02,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:44:02,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:44:02,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-19 14:44:02,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-19 14:44:02,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_smc_private [2021-11-19 14:44:02,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_smc_private [2021-11-19 14:44:02,274 INFO L130 BoogieDeclarations]: Found specification of procedure osi_load_firmware [2021-11-19 14:44:02,274 INFO L138 BoogieDeclarations]: Found implementation of procedure osi_load_firmware [2021-11-19 14:44:02,275 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 14:44:02,275 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 14:44:02,275 INFO L130 BoogieDeclarations]: Found specification of procedure smc_set_xcvr [2021-11-19 14:44:02,275 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_set_xcvr [2021-11-19 14:44:02,275 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-19 14:44:02,276 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-19 14:44:02,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:44:02,276 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-19 14:44:02,276 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-19 14:44:02,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:44:02,277 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-19 14:44:02,279 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-19 14:44:02,282 INFO L130 BoogieDeclarations]: Found specification of procedure mot_config [2021-11-19 14:44:02,283 INFO L138 BoogieDeclarations]: Found implementation of procedure mot_config [2021-11-19 14:44:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:44:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:44:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:44:02,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:44:02,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:44:02,285 INFO L130 BoogieDeclarations]: Found specification of procedure check_sig [2021-11-19 14:44:02,286 INFO L138 BoogieDeclarations]: Found implementation of procedure check_sig [2021-11-19 14:44:02,290 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-11-19 14:44:02,291 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-11-19 14:44:02,291 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 14:44:02,291 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 14:44:02,291 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-19 14:44:02,291 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-19 14:44:02,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 14:44:02,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 14:44:02,292 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-19 14:44:02,292 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-19 14:44:02,292 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2021-11-19 14:44:02,292 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2021-11-19 14:44:02,292 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 14:44:02,293 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 14:44:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 14:44:02,293 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 14:44:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 14:44:02,293 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 14:44:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_loop_tuple [2021-11-19 14:44:02,294 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_loop_tuple [2021-11-19 14:44:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_release [2021-11-19 14:44:02,294 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_release [2021-11-19 14:44:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:44:02,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:44:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_smc_private [2021-11-19 14:44:02,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_smc_private [2021-11-19 14:44:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_loop_config [2021-11-19 14:44:02,295 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_loop_config [2021-11-19 14:44:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 14:44:02,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 14:44:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure smc_interrupt [2021-11-19 14:44:02,296 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_interrupt [2021-11-19 14:44:02,296 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-19 14:44:02,296 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-19 14:44:02,296 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2021-11-19 14:44:02,296 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2021-11-19 14:44:02,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 14:44:02,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 14:44:02,297 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-19 14:44:02,297 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-19 14:44:02,297 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2021-11-19 14:44:02,297 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2021-11-19 14:44:03,448 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:44:03,454 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:44:05,424 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 14:44:55,017 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 14:44:55,136 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:44:55,169 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:44:55,169 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:44:55,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:44:55 BoogieIcfgContainer [2021-11-19 14:44:55,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:44:55,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:44:55,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:44:55,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:44:55,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:43:55" (1/3) ... [2021-11-19 14:44:55,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82561b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:44:55, skipping insertion in model container [2021-11-19 14:44:55,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:01" (2/3) ... [2021-11-19 14:44:55,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82561b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:44:55, skipping insertion in model container [2021-11-19 14:44:55,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:44:55" (3/3) ... [2021-11-19 14:44:55,187 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-19 14:44:55,195 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:44:55,195 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 14:44:55,314 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:44:55,323 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:44:55,323 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 14:44:55,457 INFO L276 IsEmpty]: Start isEmpty. Operand has 1580 states, 1047 states have (on average 1.2865329512893984) internal successors, (1347), 1068 states have internal predecessors, (1347), 464 states have call successors, (464), 67 states have call predecessors, (464), 66 states have return successors, (458), 456 states have call predecessors, (458), 458 states have call successors, (458) [2021-11-19 14:44:55,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-19 14:44:55,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:55,512 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:55,513 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:44:55,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:55,526 INFO L85 PathProgramCache]: Analyzing trace with hash -722600174, now seen corresponding path program 1 times [2021-11-19 14:44:55,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:55,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249608414] [2021-11-19 14:44:55,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:55,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:55,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:55,568 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:55,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:44:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:57,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 2389 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:44:57,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2021-11-19 14:44:58,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-11-19 14:44:59,130 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:59,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249608414] [2021-11-19 14:44:59,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249608414] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:59,131 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:59,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:44:59,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421079117] [2021-11-19 14:44:59,135 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:59,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:44:59,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:59,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:44:59,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:44:59,201 INFO L87 Difference]: Start difference. First operand has 1580 states, 1047 states have (on average 1.2865329512893984) internal successors, (1347), 1068 states have internal predecessors, (1347), 464 states have call successors, (464), 67 states have call predecessors, (464), 66 states have return successors, (458), 456 states have call predecessors, (458), 458 states have call successors, (458) Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-19 14:45:06,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:06,362 INFO L93 Difference]: Finished difference Result 6075 states and 8868 transitions. [2021-11-19 14:45:06,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:45:06,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 160 [2021-11-19 14:45:06,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:06,548 INFO L225 Difference]: With dead ends: 6075 [2021-11-19 14:45:06,550 INFO L226 Difference]: Without dead ends: 4507 [2021-11-19 14:45:06,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:06,577 INFO L933 BasicCegarLoop]: 3131 mSDtfsCounter, 5586 mSDsluCounter, 3431 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 859 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5586 SdHoareTripleChecker+Valid, 6562 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 859 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:06,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5586 Valid, 6562 Invalid, 1806 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [859 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-19 14:45:06,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2021-11-19 14:45:07,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 4481. [2021-11-19 14:45:07,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4481 states, 3001 states have (on average 1.287237587470843) internal successors, (3863), 3060 states have internal predecessors, (3863), 1286 states have call successors, (1286), 192 states have call predecessors, (1286), 191 states have return successors, (1282), 1276 states have call predecessors, (1282), 1282 states have call successors, (1282) [2021-11-19 14:45:07,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4481 states to 4481 states and 6431 transitions. [2021-11-19 14:45:07,157 INFO L78 Accepts]: Start accepts. Automaton has 4481 states and 6431 transitions. Word has length 160 [2021-11-19 14:45:07,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:07,159 INFO L470 AbstractCegarLoop]: Abstraction has 4481 states and 6431 transitions. [2021-11-19 14:45:07,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-19 14:45:07,159 INFO L276 IsEmpty]: Start isEmpty. Operand 4481 states and 6431 transitions. [2021-11-19 14:45:07,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-19 14:45:07,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:07,166 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:07,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:07,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:07,390 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:45:07,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:07,391 INFO L85 PathProgramCache]: Analyzing trace with hash 364420555, now seen corresponding path program 1 times [2021-11-19 14:45:07,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:07,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229233534] [2021-11-19 14:45:07,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:07,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:07,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:07,407 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:07,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:45:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:08,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 2427 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:08,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:09,418 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2021-11-19 14:45:09,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-11-19 14:45:09,890 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:09,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229233534] [2021-11-19 14:45:09,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229233534] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:09,890 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:09,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:45:09,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441123073] [2021-11-19 14:45:09,891 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:09,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:45:09,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:09,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:45:09,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:09,895 INFO L87 Difference]: Start difference. First operand 4481 states and 6431 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 14:45:11,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:11,021 INFO L93 Difference]: Finished difference Result 12527 states and 17969 transitions. [2021-11-19 14:45:11,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:11,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 170 [2021-11-19 14:45:11,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:11,108 INFO L225 Difference]: With dead ends: 12527 [2021-11-19 14:45:11,108 INFO L226 Difference]: Without dead ends: 8075 [2021-11-19 14:45:11,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:11,143 INFO L933 BasicCegarLoop]: 2618 mSDtfsCounter, 1786 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 4788 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:11,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1786 Valid, 4788 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:45:11,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8075 states. [2021-11-19 14:45:11,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8075 to 8044. [2021-11-19 14:45:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8044 states, 5376 states have (on average 1.2881324404761905) internal successors, (6925), 5492 states have internal predecessors, (6925), 2302 states have call successors, (2302), 370 states have call predecessors, (2302), 363 states have return successors, (2298), 2271 states have call predecessors, (2298), 2298 states have call successors, (2298) [2021-11-19 14:45:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8044 states to 8044 states and 11525 transitions. [2021-11-19 14:45:11,765 INFO L78 Accepts]: Start accepts. Automaton has 8044 states and 11525 transitions. Word has length 170 [2021-11-19 14:45:11,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:11,769 INFO L470 AbstractCegarLoop]: Abstraction has 8044 states and 11525 transitions. [2021-11-19 14:45:11,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 14:45:11,769 INFO L276 IsEmpty]: Start isEmpty. Operand 8044 states and 11525 transitions. [2021-11-19 14:45:11,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-19 14:45:11,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:11,778 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:11,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:12,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:12,000 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:45:12,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:12,001 INFO L85 PathProgramCache]: Analyzing trace with hash 675623852, now seen corresponding path program 1 times [2021-11-19 14:45:12,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:12,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459931748] [2021-11-19 14:45:12,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:12,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:12,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:12,008 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:12,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:45:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:13,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 2506 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:13,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:14,133 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2021-11-19 14:45:14,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-11-19 14:45:14,668 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:14,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459931748] [2021-11-19 14:45:14,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459931748] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:14,668 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:14,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:45:14,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076657448] [2021-11-19 14:45:14,669 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:14,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:45:14,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:14,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:45:14,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:14,671 INFO L87 Difference]: Start difference. First operand 8044 states and 11525 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-19 14:45:15,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:15,626 INFO L93 Difference]: Finished difference Result 15984 states and 22887 transitions. [2021-11-19 14:45:15,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:45:15,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 184 [2021-11-19 14:45:15,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:15,709 INFO L225 Difference]: With dead ends: 15984 [2021-11-19 14:45:15,710 INFO L226 Difference]: Without dead ends: 7969 [2021-11-19 14:45:15,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:15,765 INFO L933 BasicCegarLoop]: 2234 mSDtfsCounter, 2225 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:15,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2225 Valid, 2263 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:45:15,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7969 states. [2021-11-19 14:45:16,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7969 to 7969. [2021-11-19 14:45:16,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7969 states, 5335 states have (on average 1.2849109653233364) internal successors, (6855), 5451 states have internal predecessors, (6855), 2264 states have call successors, (2264), 374 states have call predecessors, (2264), 367 states have return successors, (2260), 2233 states have call predecessors, (2260), 2260 states have call successors, (2260) [2021-11-19 14:45:16,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7969 states to 7969 states and 11379 transitions. [2021-11-19 14:45:16,540 INFO L78 Accepts]: Start accepts. Automaton has 7969 states and 11379 transitions. Word has length 184 [2021-11-19 14:45:16,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:16,542 INFO L470 AbstractCegarLoop]: Abstraction has 7969 states and 11379 transitions. [2021-11-19 14:45:16,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-19 14:45:16,543 INFO L276 IsEmpty]: Start isEmpty. Operand 7969 states and 11379 transitions. [2021-11-19 14:45:16,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-19 14:45:16,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:16,547 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:16,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:16,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:16,772 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:45:16,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:16,772 INFO L85 PathProgramCache]: Analyzing trace with hash -184758672, now seen corresponding path program 1 times [2021-11-19 14:45:16,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:16,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849673862] [2021-11-19 14:45:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:16,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:16,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:16,781 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:16,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:45:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:18,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 2506 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:18,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:18,751 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2021-11-19 14:45:18,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-11-19 14:45:19,362 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:19,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849673862] [2021-11-19 14:45:19,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849673862] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:19,362 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:19,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:45:19,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396597159] [2021-11-19 14:45:19,366 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:19,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:45:19,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:19,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:45:19,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:19,368 INFO L87 Difference]: Start difference. First operand 7969 states and 11379 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-19 14:45:20,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:20,311 INFO L93 Difference]: Finished difference Result 14454 states and 20508 transitions. [2021-11-19 14:45:20,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:45:20,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 184 [2021-11-19 14:45:20,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:20,393 INFO L225 Difference]: With dead ends: 14454 [2021-11-19 14:45:20,393 INFO L226 Difference]: Without dead ends: 6535 [2021-11-19 14:45:20,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:20,439 INFO L933 BasicCegarLoop]: 1902 mSDtfsCounter, 1895 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:20,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1895 Valid, 1931 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:45:20,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6535 states. [2021-11-19 14:45:20,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6535 to 6535. [2021-11-19 14:45:20,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6535 states, 4444 states have (on average 1.2785778577857785) internal successors, (5682), 4527 states have internal predecessors, (5682), 1745 states have call successors, (1745), 350 states have call predecessors, (1745), 343 states have return successors, (1741), 1714 states have call predecessors, (1741), 1741 states have call successors, (1741) [2021-11-19 14:45:20,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6535 states to 6535 states and 9168 transitions. [2021-11-19 14:45:21,002 INFO L78 Accepts]: Start accepts. Automaton has 6535 states and 9168 transitions. Word has length 184 [2021-11-19 14:45:21,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:21,003 INFO L470 AbstractCegarLoop]: Abstraction has 6535 states and 9168 transitions. [2021-11-19 14:45:21,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-19 14:45:21,003 INFO L276 IsEmpty]: Start isEmpty. Operand 6535 states and 9168 transitions. [2021-11-19 14:45:21,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-19 14:45:21,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:21,010 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:21,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:21,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:21,224 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:45:21,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:21,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1046098172, now seen corresponding path program 1 times [2021-11-19 14:45:21,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:21,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107554961] [2021-11-19 14:45:21,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:21,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:21,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:21,232 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:21,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:45:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:22,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 2490 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:45:22,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:24,112 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2021-11-19 14:45:24,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:24,964 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2021-11-19 14:45:24,964 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:24,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107554961] [2021-11-19 14:45:24,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107554961] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:24,964 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:24,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-19 14:45:24,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318574117] [2021-11-19 14:45:24,965 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:24,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:45:24,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:24,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:45:24,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:45:24,966 INFO L87 Difference]: Start difference. First operand 6535 states and 9168 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-19 14:45:25,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:25,575 INFO L93 Difference]: Finished difference Result 6541 states and 9173 transitions. [2021-11-19 14:45:25,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:45:25,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 216 [2021-11-19 14:45:25,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:25,612 INFO L225 Difference]: With dead ends: 6541 [2021-11-19 14:45:25,613 INFO L226 Difference]: Without dead ends: 6539 [2021-11-19 14:45:25,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:45:25,618 INFO L933 BasicCegarLoop]: 1881 mSDtfsCounter, 1785 mSDsluCounter, 7499 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 9380 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:25,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1796 Valid, 9380 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:45:25,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2021-11-19 14:45:26,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 6539. [2021-11-19 14:45:26,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6539 states, 4447 states have (on average 1.2783899257926692) internal successors, (5685), 4530 states have internal predecessors, (5685), 1745 states have call successors, (1745), 351 states have call predecessors, (1745), 344 states have return successors, (1741), 1714 states have call predecessors, (1741), 1741 states have call successors, (1741) [2021-11-19 14:45:26,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6539 states to 6539 states and 9171 transitions. [2021-11-19 14:45:26,163 INFO L78 Accepts]: Start accepts. Automaton has 6539 states and 9171 transitions. Word has length 216 [2021-11-19 14:45:26,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:26,164 INFO L470 AbstractCegarLoop]: Abstraction has 6539 states and 9171 transitions. [2021-11-19 14:45:26,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-19 14:45:26,165 INFO L276 IsEmpty]: Start isEmpty. Operand 6539 states and 9171 transitions. [2021-11-19 14:45:26,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-19 14:45:26,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:26,173 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:26,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:26,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:26,388 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:45:26,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:26,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1736223341, now seen corresponding path program 1 times [2021-11-19 14:45:26,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:26,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968627778] [2021-11-19 14:45:26,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:26,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:26,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:26,399 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:26,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:45:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:28,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 2497 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:45:28,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2021-11-19 14:45:29,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2021-11-19 14:45:30,298 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:30,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968627778] [2021-11-19 14:45:30,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968627778] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:45:30,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:45:30,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:45:30,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305663109] [2021-11-19 14:45:30,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:30,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:45:30,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:30,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:45:30,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:45:30,301 INFO L87 Difference]: Start difference. First operand 6539 states and 9171 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 14:45:30,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:30,835 INFO L93 Difference]: Finished difference Result 6545 states and 9176 transitions. [2021-11-19 14:45:30,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:45:30,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (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 221 [2021-11-19 14:45:30,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:30,874 INFO L225 Difference]: With dead ends: 6545 [2021-11-19 14:45:30,874 INFO L226 Difference]: Without dead ends: 6543 [2021-11-19 14:45:30,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:45:30,881 INFO L933 BasicCegarLoop]: 1884 mSDtfsCounter, 1815 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 5633 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:30,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1825 Valid, 5633 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:45:30,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6543 states. [2021-11-19 14:45:31,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6543 to 6543. [2021-11-19 14:45:31,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6543 states, 4450 states have (on average 1.2782022471910113) internal successors, (5688), 4533 states have internal predecessors, (5688), 1745 states have call successors, (1745), 352 states have call predecessors, (1745), 345 states have return successors, (1741), 1714 states have call predecessors, (1741), 1741 states have call successors, (1741) [2021-11-19 14:45:31,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6543 states to 6543 states and 9174 transitions. [2021-11-19 14:45:31,474 INFO L78 Accepts]: Start accepts. Automaton has 6543 states and 9174 transitions. Word has length 221 [2021-11-19 14:45:31,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:31,479 INFO L470 AbstractCegarLoop]: Abstraction has 6543 states and 9174 transitions. [2021-11-19 14:45:31,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 14:45:31,480 INFO L276 IsEmpty]: Start isEmpty. Operand 6543 states and 9174 transitions. [2021-11-19 14:45:31,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-19 14:45:31,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:31,488 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:31,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:31,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:31,710 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:45:31,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:31,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1610653796, now seen corresponding path program 1 times [2021-11-19 14:45:31,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:31,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645223348] [2021-11-19 14:45:31,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:31,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:31,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:31,720 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:31,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:45:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:33,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:45:33,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 794 trivial. 0 not checked. [2021-11-19 14:45:34,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:35,503 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 794 trivial. 0 not checked. [2021-11-19 14:45:35,503 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:35,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645223348] [2021-11-19 14:45:35,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645223348] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:45:35,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:45:35,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:45:35,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453486299] [2021-11-19 14:45:35,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:35,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:45:35,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:35,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:45:35,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:45:35,505 INFO L87 Difference]: Start difference. First operand 6543 states and 9174 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 14:45:36,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:36,128 INFO L93 Difference]: Finished difference Result 6549 states and 9179 transitions. [2021-11-19 14:45:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:45:36,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 226 [2021-11-19 14:45:36,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:36,162 INFO L225 Difference]: With dead ends: 6549 [2021-11-19 14:45:36,162 INFO L226 Difference]: Without dead ends: 6547 [2021-11-19 14:45:36,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:45:36,168 INFO L933 BasicCegarLoop]: 1884 mSDtfsCounter, 1815 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1824 SdHoareTripleChecker+Valid, 5633 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:36,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1824 Valid, 5633 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:36,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6547 states. [2021-11-19 14:45:36,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6547 to 6547. [2021-11-19 14:45:36,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6547 states, 4453 states have (on average 1.2780148214686728) internal successors, (5691), 4536 states have internal predecessors, (5691), 1745 states have call successors, (1745), 353 states have call predecessors, (1745), 346 states have return successors, (1741), 1714 states have call predecessors, (1741), 1741 states have call successors, (1741) [2021-11-19 14:45:36,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6547 states to 6547 states and 9177 transitions. [2021-11-19 14:45:36,743 INFO L78 Accepts]: Start accepts. Automaton has 6547 states and 9177 transitions. Word has length 226 [2021-11-19 14:45:36,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:36,744 INFO L470 AbstractCegarLoop]: Abstraction has 6547 states and 9177 transitions. [2021-11-19 14:45:36,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 14:45:36,745 INFO L276 IsEmpty]: Start isEmpty. Operand 6547 states and 9177 transitions. [2021-11-19 14:45:36,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-19 14:45:36,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:36,752 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:36,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:36,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:36,976 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:45:36,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:36,976 INFO L85 PathProgramCache]: Analyzing trace with hash -95951731, now seen corresponding path program 1 times [2021-11-19 14:45:36,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:36,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697004058] [2021-11-19 14:45:36,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:36,979 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:36,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:36,980 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:36,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:45:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:38,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 2511 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:45:38,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2021-11-19 14:45:39,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2021-11-19 14:45:40,213 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:40,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697004058] [2021-11-19 14:45:40,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697004058] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:45:40,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:45:40,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:45:40,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178391865] [2021-11-19 14:45:40,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:40,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:45:40,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:40,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:45:40,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:45:40,215 INFO L87 Difference]: Start difference. First operand 6547 states and 9177 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-19 14:45:40,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:40,791 INFO L93 Difference]: Finished difference Result 6553 states and 9182 transitions. [2021-11-19 14:45:40,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:45:40,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 231 [2021-11-19 14:45:40,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:40,819 INFO L225 Difference]: With dead ends: 6553 [2021-11-19 14:45:40,819 INFO L226 Difference]: Without dead ends: 6551 [2021-11-19 14:45:40,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:45:40,822 INFO L933 BasicCegarLoop]: 1884 mSDtfsCounter, 1815 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 5633 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:40,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1823 Valid, 5633 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:45:40,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6551 states. [2021-11-19 14:45:41,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6551 to 6551. [2021-11-19 14:45:41,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6551 states, 4456 states have (on average 1.2778276481149013) internal successors, (5694), 4539 states have internal predecessors, (5694), 1745 states have call successors, (1745), 354 states have call predecessors, (1745), 347 states have return successors, (1741), 1714 states have call predecessors, (1741), 1741 states have call successors, (1741) [2021-11-19 14:45:41,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6551 states to 6551 states and 9180 transitions. [2021-11-19 14:45:41,367 INFO L78 Accepts]: Start accepts. Automaton has 6551 states and 9180 transitions. Word has length 231 [2021-11-19 14:45:41,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:41,368 INFO L470 AbstractCegarLoop]: Abstraction has 6551 states and 9180 transitions. [2021-11-19 14:45:41,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-19 14:45:41,368 INFO L276 IsEmpty]: Start isEmpty. Operand 6551 states and 9180 transitions. [2021-11-19 14:45:41,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-19 14:45:41,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:41,378 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:41,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:41,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:41,604 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:45:41,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:41,604 INFO L85 PathProgramCache]: Analyzing trace with hash 472309834, now seen corresponding path program 1 times [2021-11-19 14:45:41,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:41,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938835395] [2021-11-19 14:45:41,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:41,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:41,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:41,611 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:41,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:45:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:42,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 2566 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:42,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:43,395 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2021-11-19 14:45:43,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:43,909 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2021-11-19 14:45:43,909 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:43,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938835395] [2021-11-19 14:45:43,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938835395] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:43,910 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:43,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:45:43,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407577379] [2021-11-19 14:45:43,910 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:43,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:45:43,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:43,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:45:43,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:43,912 INFO L87 Difference]: Start difference. First operand 6551 states and 9180 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 4 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2021-11-19 14:45:47,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:47,678 INFO L93 Difference]: Finished difference Result 15248 states and 21355 transitions. [2021-11-19 14:45:47,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:45:47,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 4 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) Word has length 248 [2021-11-19 14:45:47,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:47,728 INFO L225 Difference]: With dead ends: 15248 [2021-11-19 14:45:47,729 INFO L226 Difference]: Without dead ends: 10841 [2021-11-19 14:45:47,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:47,748 INFO L933 BasicCegarLoop]: 3938 mSDtfsCounter, 3586 mSDsluCounter, 3236 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3586 SdHoareTripleChecker+Valid, 7174 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:47,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3586 Valid, 7174 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-19 14:45:47,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10841 states. [2021-11-19 14:45:48,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10841 to 10799. [2021-11-19 14:45:48,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10799 states, 7356 states have (on average 1.2775965198477433) internal successors, (9398), 7489 states have internal predecessors, (9398), 2867 states have call successors, (2867), 584 states have call predecessors, (2867), 573 states have return successors, (2863), 2820 states have call predecessors, (2863), 2863 states have call successors, (2863) [2021-11-19 14:45:48,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10799 states to 10799 states and 15128 transitions. [2021-11-19 14:45:48,848 INFO L78 Accepts]: Start accepts. Automaton has 10799 states and 15128 transitions. Word has length 248 [2021-11-19 14:45:48,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:48,849 INFO L470 AbstractCegarLoop]: Abstraction has 10799 states and 15128 transitions. [2021-11-19 14:45:48,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 4 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2021-11-19 14:45:48,850 INFO L276 IsEmpty]: Start isEmpty. Operand 10799 states and 15128 transitions. [2021-11-19 14:45:48,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-19 14:45:48,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:48,860 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 4, 4, 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] [2021-11-19 14:45:48,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:49,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:49,084 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:45:49,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:49,084 INFO L85 PathProgramCache]: Analyzing trace with hash -153909869, now seen corresponding path program 1 times [2021-11-19 14:45:49,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:49,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555062898] [2021-11-19 14:45:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:49,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:49,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:49,088 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:49,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:45:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:50,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 2565 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:50,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2021-11-19 14:45:50,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2021-11-19 14:45:51,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:51,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555062898] [2021-11-19 14:45:51,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555062898] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:51,342 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:51,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:45:51,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274806959] [2021-11-19 14:45:51,342 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:51,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:45:51,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:51,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:45:51,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:51,344 INFO L87 Difference]: Start difference. First operand 10799 states and 15128 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 4 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2021-11-19 14:45:55,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:55,976 INFO L93 Difference]: Finished difference Result 21638 states and 30289 transitions. [2021-11-19 14:45:55,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:45:55,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 4 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) Word has length 247 [2021-11-19 14:45:55,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:56,047 INFO L225 Difference]: With dead ends: 21638 [2021-11-19 14:45:56,047 INFO L226 Difference]: Without dead ends: 12983 [2021-11-19 14:45:56,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:56,076 INFO L933 BasicCegarLoop]: 3950 mSDtfsCounter, 3623 mSDsluCounter, 2891 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3623 SdHoareTripleChecker+Valid, 6841 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:56,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3623 Valid, 6841 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-19 14:45:56,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2021-11-19 14:45:57,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 12907. [2021-11-19 14:45:57,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12907 states, 8792 states have (on average 1.2766151046405823) internal successors, (11224), 8950 states have internal predecessors, (11224), 3427 states have call successors, (3427), 698 states have call predecessors, (3427), 685 states have return successors, (3423), 3372 states have call predecessors, (3423), 3423 states have call successors, (3423) [2021-11-19 14:45:57,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12907 states to 12907 states and 18074 transitions. [2021-11-19 14:45:57,644 INFO L78 Accepts]: Start accepts. Automaton has 12907 states and 18074 transitions. Word has length 247 [2021-11-19 14:45:57,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:57,645 INFO L470 AbstractCegarLoop]: Abstraction has 12907 states and 18074 transitions. [2021-11-19 14:45:57,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 4 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2021-11-19 14:45:57,646 INFO L276 IsEmpty]: Start isEmpty. Operand 12907 states and 18074 transitions. [2021-11-19 14:45:57,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-19 14:45:57,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:57,657 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:57,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:57,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:57,884 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:45:57,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:57,885 INFO L85 PathProgramCache]: Analyzing trace with hash 67037636, now seen corresponding path program 1 times [2021-11-19 14:45:57,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:57,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840891035] [2021-11-19 14:45:57,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:57,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:57,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:57,891 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:57,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:45:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:59,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 2518 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:45:59,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:00,889 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 814 trivial. 0 not checked. [2021-11-19 14:46:00,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 814 trivial. 0 not checked. [2021-11-19 14:46:01,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:01,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840891035] [2021-11-19 14:46:01,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840891035] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:46:01,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:46:01,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:46:01,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426451937] [2021-11-19 14:46:01,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:01,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:46:01,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:01,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:46:01,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:46:01,641 INFO L87 Difference]: Start difference. First operand 12907 states and 18074 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-19 14:46:02,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:02,644 INFO L93 Difference]: Finished difference Result 12913 states and 18079 transitions. [2021-11-19 14:46:02,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:46:02,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 236 [2021-11-19 14:46:02,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:02,708 INFO L225 Difference]: With dead ends: 12913 [2021-11-19 14:46:02,708 INFO L226 Difference]: Without dead ends: 12911 [2021-11-19 14:46:02,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:46:02,719 INFO L933 BasicCegarLoop]: 1884 mSDtfsCounter, 1815 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1822 SdHoareTripleChecker+Valid, 5633 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:02,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1822 Valid, 5633 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:46:02,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12911 states. [2021-11-19 14:46:04,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12911 to 12911. [2021-11-19 14:46:04,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12911 states, 8795 states have (on average 1.2765207504263787) internal successors, (11227), 8953 states have internal predecessors, (11227), 3427 states have call successors, (3427), 699 states have call predecessors, (3427), 686 states have return successors, (3423), 3372 states have call predecessors, (3423), 3423 states have call successors, (3423) [2021-11-19 14:46:04,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12911 states to 12911 states and 18077 transitions. [2021-11-19 14:46:04,280 INFO L78 Accepts]: Start accepts. Automaton has 12911 states and 18077 transitions. Word has length 236 [2021-11-19 14:46:04,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:04,281 INFO L470 AbstractCegarLoop]: Abstraction has 12911 states and 18077 transitions. [2021-11-19 14:46:04,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-19 14:46:04,282 INFO L276 IsEmpty]: Start isEmpty. Operand 12911 states and 18077 transitions. [2021-11-19 14:46:04,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-19 14:46:04,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:04,291 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:04,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:04,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:04,516 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:46:04,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:04,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1524278957, now seen corresponding path program 1 times [2021-11-19 14:46:04,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:04,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602801716] [2021-11-19 14:46:04,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:04,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:04,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:04,522 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:04,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:46:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:06,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 2525 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:46:06,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2021-11-19 14:46:07,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2021-11-19 14:46:08,638 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:08,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602801716] [2021-11-19 14:46:08,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602801716] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:46:08,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:46:08,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:46:08,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365337805] [2021-11-19 14:46:08,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:08,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:46:08,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:08,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:46:08,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:46:08,641 INFO L87 Difference]: Start difference. First operand 12911 states and 18077 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-19 14:46:10,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:10,006 INFO L93 Difference]: Finished difference Result 12917 states and 18082 transitions. [2021-11-19 14:46:10,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:46:10,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 241 [2021-11-19 14:46:10,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:10,066 INFO L225 Difference]: With dead ends: 12917 [2021-11-19 14:46:10,067 INFO L226 Difference]: Without dead ends: 12915 [2021-11-19 14:46:10,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:46:10,078 INFO L933 BasicCegarLoop]: 1884 mSDtfsCounter, 1815 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1821 SdHoareTripleChecker+Valid, 5633 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:10,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1821 Valid, 5633 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:46:10,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12915 states. [2021-11-19 14:46:12,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12915 to 12915. [2021-11-19 14:46:12,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12915 states, 8798 states have (on average 1.276426460559218) internal successors, (11230), 8956 states have internal predecessors, (11230), 3427 states have call successors, (3427), 700 states have call predecessors, (3427), 687 states have return successors, (3423), 3372 states have call predecessors, (3423), 3423 states have call successors, (3423) [2021-11-19 14:46:12,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12915 states to 12915 states and 18080 transitions. [2021-11-19 14:46:12,179 INFO L78 Accepts]: Start accepts. Automaton has 12915 states and 18080 transitions. Word has length 241 [2021-11-19 14:46:12,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:12,180 INFO L470 AbstractCegarLoop]: Abstraction has 12915 states and 18080 transitions. [2021-11-19 14:46:12,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-19 14:46:12,180 INFO L276 IsEmpty]: Start isEmpty. Operand 12915 states and 18080 transitions. [2021-11-19 14:46:12,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-19 14:46:12,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:12,189 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:12,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:12,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:12,405 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:46:12,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:12,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1907010340, now seen corresponding path program 1 times [2021-11-19 14:46:12,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:12,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635455913] [2021-11-19 14:46:12,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:12,410 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:12,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:12,411 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:12,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:46:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:13,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 2532 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:46:13,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2021-11-19 14:46:15,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2021-11-19 14:46:16,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:16,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635455913] [2021-11-19 14:46:16,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635455913] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:46:16,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:46:16,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:46:16,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419382213] [2021-11-19 14:46:16,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:16,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:46:16,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:16,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:46:16,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:46:16,106 INFO L87 Difference]: Start difference. First operand 12915 states and 18080 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-19 14:46:17,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:17,141 INFO L93 Difference]: Finished difference Result 13353 states and 18553 transitions. [2021-11-19 14:46:17,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:46:17,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 246 [2021-11-19 14:46:17,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:17,190 INFO L225 Difference]: With dead ends: 13353 [2021-11-19 14:46:17,190 INFO L226 Difference]: Without dead ends: 13351 [2021-11-19 14:46:17,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:46:17,199 INFO L933 BasicCegarLoop]: 1896 mSDtfsCounter, 1588 mSDsluCounter, 4069 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 5965 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:17,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1593 Valid, 5965 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:46:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13351 states. [2021-11-19 14:46:18,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13351 to 13351. [2021-11-19 14:46:18,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13351 states, 9083 states have (on average 1.272376967962127) internal successors, (11557), 9253 states have internal predecessors, (11557), 3499 states have call successors, (3499), 779 states have call predecessors, (3499), 766 states have return successors, (3495), 3444 states have call predecessors, (3495), 3495 states have call successors, (3495) [2021-11-19 14:46:18,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13351 states to 13351 states and 18551 transitions. [2021-11-19 14:46:18,756 INFO L78 Accepts]: Start accepts. Automaton has 13351 states and 18551 transitions. Word has length 246 [2021-11-19 14:46:18,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:18,758 INFO L470 AbstractCegarLoop]: Abstraction has 13351 states and 18551 transitions. [2021-11-19 14:46:18,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-19 14:46:18,758 INFO L276 IsEmpty]: Start isEmpty. Operand 13351 states and 18551 transitions. [2021-11-19 14:46:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-19 14:46:18,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:18,771 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:18,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:18,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:18,996 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:46:18,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:18,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1150619443, now seen corresponding path program 1 times [2021-11-19 14:46:19,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:19,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614590701] [2021-11-19 14:46:19,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:19,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:19,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:19,002 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:19,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:46:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:20,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2539 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:46:20,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2021-11-19 14:46:22,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2021-11-19 14:46:23,063 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:23,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614590701] [2021-11-19 14:46:23,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614590701] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:46:23,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:46:23,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:46:23,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622921998] [2021-11-19 14:46:23,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:23,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:46:23,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:23,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:46:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:46:23,067 INFO L87 Difference]: Start difference. First operand 13351 states and 18551 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 14:46:24,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:24,337 INFO L93 Difference]: Finished difference Result 13357 states and 18556 transitions. [2021-11-19 14:46:24,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:46:24,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 251 [2021-11-19 14:46:24,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:24,378 INFO L225 Difference]: With dead ends: 13357 [2021-11-19 14:46:24,378 INFO L226 Difference]: Without dead ends: 13355 [2021-11-19 14:46:24,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:46:24,386 INFO L933 BasicCegarLoop]: 1884 mSDtfsCounter, 1815 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 5633 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:24,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1819 Valid, 5633 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:46:24,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13355 states. [2021-11-19 14:46:25,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13355 to 13355. [2021-11-19 14:46:25,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13355 states, 9086 states have (on average 1.2722870349988995) internal successors, (11560), 9256 states have internal predecessors, (11560), 3499 states have call successors, (3499), 780 states have call predecessors, (3499), 767 states have return successors, (3495), 3444 states have call predecessors, (3495), 3495 states have call successors, (3495) [2021-11-19 14:46:25,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13355 states to 13355 states and 18554 transitions. [2021-11-19 14:46:25,578 INFO L78 Accepts]: Start accepts. Automaton has 13355 states and 18554 transitions. Word has length 251 [2021-11-19 14:46:25,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:25,580 INFO L470 AbstractCegarLoop]: Abstraction has 13355 states and 18554 transitions. [2021-11-19 14:46:25,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 14:46:25,580 INFO L276 IsEmpty]: Start isEmpty. Operand 13355 states and 18554 transitions. [2021-11-19 14:46:25,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-19 14:46:25,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:25,591 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:25,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:25,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:25,804 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)] === [2021-11-19 14:46:25,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:25,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1754129540, now seen corresponding path program 1 times [2021-11-19 14:46:25,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:25,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895621747] [2021-11-19 14:46:25,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:25,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:25,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:25,808 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:25,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:46:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:27,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 2546 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:46:27,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2021-11-19 14:46:28,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:29,508 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2021-11-19 14:46:29,509 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:29,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895621747] [2021-11-19 14:46:29,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895621747] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:46:29,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:46:29,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:46:29,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431648394] [2021-11-19 14:46:29,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:29,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:46:29,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:29,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:46:29,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:46:29,512 INFO L87 Difference]: Start difference. First operand 13355 states and 18554 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 14:46:30,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:30,595 INFO L93 Difference]: Finished difference Result 13361 states and 18559 transitions. [2021-11-19 14:46:30,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:46:30,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 256 [2021-11-19 14:46:30,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:30,635 INFO L225 Difference]: With dead ends: 13361 [2021-11-19 14:46:30,636 INFO L226 Difference]: Without dead ends: 13359 [2021-11-19 14:46:30,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:46:30,645 INFO L933 BasicCegarLoop]: 1884 mSDtfsCounter, 1815 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 5633 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:30,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1818 Valid, 5633 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:46:30,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13359 states. [2021-11-19 14:46:31,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13359 to 13359. [2021-11-19 14:46:32,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13359 states, 9089 states have (on average 1.2721971614038947) internal successors, (11563), 9259 states have internal predecessors, (11563), 3499 states have call successors, (3499), 781 states have call predecessors, (3499), 768 states have return successors, (3495), 3444 states have call predecessors, (3495), 3495 states have call successors, (3495) [2021-11-19 14:46:32,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13359 states to 13359 states and 18557 transitions. [2021-11-19 14:46:32,066 INFO L78 Accepts]: Start accepts. Automaton has 13359 states and 18557 transitions. Word has length 256 [2021-11-19 14:46:32,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:32,067 INFO L470 AbstractCegarLoop]: Abstraction has 13359 states and 18557 transitions. [2021-11-19 14:46:32,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 14:46:32,068 INFO L276 IsEmpty]: Start isEmpty. Operand 13359 states and 18557 transitions. [2021-11-19 14:46:32,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-19 14:46:32,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:32,083 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 10, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:32,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:32,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:32,308 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:46:32,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:32,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2102476051, now seen corresponding path program 1 times [2021-11-19 14:46:32,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:32,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010007150] [2021-11-19 14:46:32,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:32,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:32,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:32,315 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:32,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:46:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:34,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 2553 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:46:34,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:35,576 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2021-11-19 14:46:35,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:36,484 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2021-11-19 14:46:36,485 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:36,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010007150] [2021-11-19 14:46:36,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010007150] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:46:36,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:46:36,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:46:36,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797080436] [2021-11-19 14:46:36,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:36,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:46:36,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:36,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:46:36,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:46:36,489 INFO L87 Difference]: Start difference. First operand 13359 states and 18557 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-19 14:46:37,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:37,726 INFO L93 Difference]: Finished difference Result 13365 states and 18562 transitions. [2021-11-19 14:46:37,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:46:37,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 261 [2021-11-19 14:46:37,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:37,777 INFO L225 Difference]: With dead ends: 13365 [2021-11-19 14:46:37,777 INFO L226 Difference]: Without dead ends: 13363 [2021-11-19 14:46:37,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:46:37,787 INFO L933 BasicCegarLoop]: 1884 mSDtfsCounter, 1815 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 5633 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:37,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1817 Valid, 5633 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:46:37,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13363 states. [2021-11-19 14:46:39,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13363 to 13363. [2021-11-19 14:46:39,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13363 states, 9092 states have (on average 1.2721073471183457) internal successors, (11566), 9262 states have internal predecessors, (11566), 3499 states have call successors, (3499), 782 states have call predecessors, (3499), 769 states have return successors, (3495), 3444 states have call predecessors, (3495), 3495 states have call successors, (3495) [2021-11-19 14:46:39,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 18560 transitions. [2021-11-19 14:46:39,192 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 18560 transitions. Word has length 261 [2021-11-19 14:46:39,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:39,194 INFO L470 AbstractCegarLoop]: Abstraction has 13363 states and 18560 transitions. [2021-11-19 14:46:39,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-19 14:46:39,194 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 18560 transitions. [2021-11-19 14:46:39,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-19 14:46:39,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:39,207 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 12, 12, 12, 12, 12, 12, 11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 14:46:39,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:39,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:39,408 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:46:39,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:39,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1447361199, now seen corresponding path program 1 times [2021-11-19 14:46:39,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:39,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451734056] [2021-11-19 14:46:39,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:39,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:39,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:39,415 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:39,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:46:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:41,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 2644 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 14:46:41,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:42,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 249 proven. 3 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2021-11-19 14:46:42,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 51 proven. 18 refuted. 0 times theorem prover too weak. 1068 trivial. 0 not checked. [2021-11-19 14:46:44,167 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:44,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451734056] [2021-11-19 14:46:44,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451734056] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:46:44,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [487907762] [2021-11-19 14:46:44,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:44,169 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:46:44,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:46:44,175 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:46:44,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 14:46:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:45,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 2644 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:46:45,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1117 trivial. 0 not checked. [2021-11-19 14:46:47,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1117 trivial. 0 not checked. [2021-11-19 14:46:48,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [487907762] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:46:48,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:46:48,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 17, 4] total 27 [2021-11-19 14:46:48,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536137336] [2021-11-19 14:46:48,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:48,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:46:48,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:48,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:46:48,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-11-19 14:46:48,662 INFO L87 Difference]: Start difference. First operand 13363 states and 18560 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-19 14:46:49,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:49,921 INFO L93 Difference]: Finished difference Result 13369 states and 18565 transitions. [2021-11-19 14:46:49,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:46:49,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 302 [2021-11-19 14:46:49,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:49,964 INFO L225 Difference]: With dead ends: 13369 [2021-11-19 14:46:49,964 INFO L226 Difference]: Without dead ends: 13365 [2021-11-19 14:46:49,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1207 GetRequests, 1179 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2021-11-19 14:46:49,973 INFO L933 BasicCegarLoop]: 1884 mSDtfsCounter, 1809 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 5633 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:49,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1810 Valid, 5633 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:46:49,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13365 states. [2021-11-19 14:46:51,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13365 to 13365. [2021-11-19 14:46:51,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13365 states, 9094 states have (on average 1.2719375412359797) internal successors, (11567), 9263 states have internal predecessors, (11567), 3499 states have call successors, (3499), 783 states have call predecessors, (3499), 769 states have return successors, (3495), 3444 states have call predecessors, (3495), 3495 states have call successors, (3495) [2021-11-19 14:46:51,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13365 states to 13365 states and 18561 transitions. [2021-11-19 14:46:51,396 INFO L78 Accepts]: Start accepts. Automaton has 13365 states and 18561 transitions. Word has length 302 [2021-11-19 14:46:51,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:51,397 INFO L470 AbstractCegarLoop]: Abstraction has 13365 states and 18561 transitions. [2021-11-19 14:46:51,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-19 14:46:51,398 INFO L276 IsEmpty]: Start isEmpty. Operand 13365 states and 18561 transitions. [2021-11-19 14:46:51,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-19 14:46:51,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:51,408 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 12, 12, 12, 12, 12, 12, 12, 11, 11, 6, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 14:46:51,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:51,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:51,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:51,810 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:46:51,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:51,811 INFO L85 PathProgramCache]: Analyzing trace with hash -289322560, now seen corresponding path program 1 times [2021-11-19 14:46:51,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:51,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173860431] [2021-11-19 14:46:51,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:51,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:51,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:51,823 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:51,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 14:46:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:53,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 2651 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 14:46:53,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:55,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 249 proven. 3 refuted. 0 times theorem prover too weak. 927 trivial. 0 not checked. [2021-11-19 14:46:55,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 53 proven. 18 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2021-11-19 14:46:56,907 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:56,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173860431] [2021-11-19 14:46:56,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173860431] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:46:56,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1147103266] [2021-11-19 14:46:56,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:56,908 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:46:56,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:46:56,910 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:46:56,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-19 14:46:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:58,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 2651 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:46:58,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2021-11-19 14:47:00,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2021-11-19 14:47:01,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1147103266] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:47:01,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:47:01,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 17, 4] total 27 [2021-11-19 14:47:01,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60849594] [2021-11-19 14:47:01,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:01,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:47:01,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:01,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:47:01,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-11-19 14:47:01,902 INFO L87 Difference]: Start difference. First operand 13365 states and 18561 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-19 14:47:03,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:03,282 INFO L93 Difference]: Finished difference Result 13365 states and 18561 transitions. [2021-11-19 14:47:03,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:47:03,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 307 [2021-11-19 14:47:03,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:03,328 INFO L225 Difference]: With dead ends: 13365 [2021-11-19 14:47:03,328 INFO L226 Difference]: Without dead ends: 13234 [2021-11-19 14:47:03,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1227 GetRequests, 1199 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2021-11-19 14:47:03,337 INFO L933 BasicCegarLoop]: 1882 mSDtfsCounter, 1805 mSDsluCounter, 3748 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 5630 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:03,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1805 Valid, 5630 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:47:03,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13234 states. [2021-11-19 14:47:04,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13234 to 11048. [2021-11-19 14:47:04,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11048 states, 7519 states have (on average 1.2737066099215322) internal successors, (9577), 7655 states have internal predecessors, (9577), 2898 states have call successors, (2898), 639 states have call predecessors, (2898), 629 states have return successors, (2898), 2858 states have call predecessors, (2898), 2898 states have call successors, (2898) [2021-11-19 14:47:04,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11048 states to 11048 states and 15373 transitions. [2021-11-19 14:47:04,777 INFO L78 Accepts]: Start accepts. Automaton has 11048 states and 15373 transitions. Word has length 307 [2021-11-19 14:47:04,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:04,777 INFO L470 AbstractCegarLoop]: Abstraction has 11048 states and 15373 transitions. [2021-11-19 14:47:04,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-19 14:47:04,778 INFO L276 IsEmpty]: Start isEmpty. Operand 11048 states and 15373 transitions. [2021-11-19 14:47:04,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-19 14:47:04,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:04,790 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 12, 12, 12, 12, 12, 12, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:04,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:05,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:05,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:05,191 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)] === [2021-11-19 14:47:05,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:05,191 INFO L85 PathProgramCache]: Analyzing trace with hash -171434849, now seen corresponding path program 1 times [2021-11-19 14:47:05,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:05,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614729824] [2021-11-19 14:47:05,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:05,195 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:05,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:05,196 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:05,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 14:47:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:07,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 2747 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:47:07,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:07,931 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2021-11-19 14:47:07,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:08,766 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2021-11-19 14:47:08,766 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:08,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614729824] [2021-11-19 14:47:08,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614729824] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:08,767 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:08,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:47:08,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831589177] [2021-11-19 14:47:08,767 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:08,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:47:08,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:08,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:47:08,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:47:08,769 INFO L87 Difference]: Start difference. First operand 11048 states and 15373 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 4 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) [2021-11-19 14:47:13,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:13,833 INFO L93 Difference]: Finished difference Result 27601 states and 38146 transitions. [2021-11-19 14:47:13,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:47:13,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 4 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) Word has length 297 [2021-11-19 14:47:13,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:13,904 INFO L225 Difference]: With dead ends: 27601 [2021-11-19 14:47:13,905 INFO L226 Difference]: Without dead ends: 16524 [2021-11-19 14:47:13,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 590 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:47:13,942 INFO L933 BasicCegarLoop]: 2912 mSDtfsCounter, 2682 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2682 SdHoareTripleChecker+Valid, 5628 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:13,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2682 Valid, 5628 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-19 14:47:13,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16524 states. [2021-11-19 14:47:15,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16524 to 16512. [2021-11-19 14:47:15,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16512 states, 11275 states have (on average 1.2559645232815964) internal successors, (14161), 11476 states have internal predecessors, (14161), 4219 states have call successors, (4219), 1024 states have call predecessors, (4219), 1016 states have return successors, (4219), 4175 states have call predecessors, (4219), 4219 states have call successors, (4219) [2021-11-19 14:47:15,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16512 states to 16512 states and 22599 transitions. [2021-11-19 14:47:15,871 INFO L78 Accepts]: Start accepts. Automaton has 16512 states and 22599 transitions. Word has length 297 [2021-11-19 14:47:15,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:15,872 INFO L470 AbstractCegarLoop]: Abstraction has 16512 states and 22599 transitions. [2021-11-19 14:47:15,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 4 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) [2021-11-19 14:47:15,872 INFO L276 IsEmpty]: Start isEmpty. Operand 16512 states and 22599 transitions. [2021-11-19 14:47:15,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-11-19 14:47:15,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:15,887 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 12, 12, 12, 12, 12, 12, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:15,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:16,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:16,088 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:47:16,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:16,089 INFO L85 PathProgramCache]: Analyzing trace with hash 927968766, now seen corresponding path program 1 times [2021-11-19 14:47:16,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:16,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273040964] [2021-11-19 14:47:16,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:16,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:16,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:16,094 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:16,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 14:47:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:18,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 2903 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:47:18,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2021-11-19 14:47:19,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1186 trivial. 0 not checked. [2021-11-19 14:47:20,375 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:20,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273040964] [2021-11-19 14:47:20,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273040964] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:20,376 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:20,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:47:20,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985300429] [2021-11-19 14:47:20,377 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:20,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:47:20,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:20,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:47:20,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:47:20,379 INFO L87 Difference]: Start difference. First operand 16512 states and 22599 transitions. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 4 states have call successors, (83), 3 states have call predecessors, (83), 3 states have return successors, (78), 4 states have call predecessors, (78), 4 states have call successors, (78) [2021-11-19 14:47:26,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:26,315 INFO L93 Difference]: Finished difference Result 42175 states and 57599 transitions. [2021-11-19 14:47:26,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:47:26,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 4 states have call successors, (83), 3 states have call predecessors, (83), 3 states have return successors, (78), 4 states have call predecessors, (78), 4 states have call successors, (78) Word has length 388 [2021-11-19 14:47:26,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:26,401 INFO L225 Difference]: With dead ends: 42175 [2021-11-19 14:47:26,401 INFO L226 Difference]: Without dead ends: 25790 [2021-11-19 14:47:26,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 772 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:47:26,448 INFO L933 BasicCegarLoop]: 2855 mSDtfsCounter, 2688 mSDsluCounter, 1982 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2688 SdHoareTripleChecker+Valid, 4837 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:26,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2688 Valid, 4837 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 14:47:26,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25790 states. [2021-11-19 14:47:29,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25790 to 25778. [2021-11-19 14:47:29,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25778 states, 17743 states have (on average 1.2505776926111707) internal successors, (22189), 18034 states have internal predecessors, (22189), 6423 states have call successors, (6423), 1618 states have call predecessors, (6423), 1610 states have return successors, (6423), 6361 states have call predecessors, (6423), 6423 states have call successors, (6423) [2021-11-19 14:47:29,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25778 states to 25778 states and 35035 transitions. [2021-11-19 14:47:29,613 INFO L78 Accepts]: Start accepts. Automaton has 25778 states and 35035 transitions. Word has length 388 [2021-11-19 14:47:29,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:29,614 INFO L470 AbstractCegarLoop]: Abstraction has 25778 states and 35035 transitions. [2021-11-19 14:47:29,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 4 states have call successors, (83), 3 states have call predecessors, (83), 3 states have return successors, (78), 4 states have call predecessors, (78), 4 states have call successors, (78) [2021-11-19 14:47:29,614 INFO L276 IsEmpty]: Start isEmpty. Operand 25778 states and 35035 transitions. [2021-11-19 14:47:29,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-11-19 14:47:29,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:29,632 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 14, 14, 12, 12, 12, 12, 12, 12, 8, 8, 8, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:29,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-19 14:47:29,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:29,833 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:47:29,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:29,834 INFO L85 PathProgramCache]: Analyzing trace with hash -970542172, now seen corresponding path program 1 times [2021-11-19 14:47:29,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:29,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992661239] [2021-11-19 14:47:29,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:29,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:29,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:29,838 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:29,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 14:47:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:31,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 2999 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:47:31,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:33,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2021-11-19 14:47:33,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:34,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 1372 trivial. 0 not checked. [2021-11-19 14:47:34,385 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:34,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992661239] [2021-11-19 14:47:34,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992661239] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:34,385 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:34,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:47:34,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440450487] [2021-11-19 14:47:34,386 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:34,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:47:34,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:34,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:47:34,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:47:34,390 INFO L87 Difference]: Start difference. First operand 25778 states and 35035 transitions. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 4 states have call successors, (87), 3 states have call predecessors, (87), 3 states have return successors, (82), 4 states have call predecessors, (82), 4 states have call successors, (82) [2021-11-19 14:47:41,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:41,838 INFO L93 Difference]: Finished difference Result 57626 states and 78281 transitions. [2021-11-19 14:47:41,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:47:41,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 4 states have call successors, (87), 3 states have call predecessors, (87), 3 states have return successors, (82), 4 states have call predecessors, (82), 4 states have call successors, (82) Word has length 446 [2021-11-19 14:47:41,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:42,027 INFO L225 Difference]: With dead ends: 57626 [2021-11-19 14:47:42,027 INFO L226 Difference]: Without dead ends: 31903 [2021-11-19 14:47:42,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 888 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:47:42,118 INFO L933 BasicCegarLoop]: 2873 mSDtfsCounter, 2680 mSDsluCounter, 2166 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2680 SdHoareTripleChecker+Valid, 5039 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:42,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2680 Valid, 5039 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-19 14:47:42,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31903 states. [2021-11-19 14:47:46,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31903 to 31891. [2021-11-19 14:47:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31891 states, 22013 states have (on average 1.2484895289147322) internal successors, (27483), 22364 states have internal predecessors, (27483), 7875 states have call successors, (7875), 2009 states have call predecessors, (7875), 2001 states have return successors, (7875), 7801 states have call predecessors, (7875), 7875 states have call successors, (7875) [2021-11-19 14:47:46,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31891 states to 31891 states and 43233 transitions. [2021-11-19 14:47:46,906 INFO L78 Accepts]: Start accepts. Automaton has 31891 states and 43233 transitions. Word has length 446 [2021-11-19 14:47:46,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:46,908 INFO L470 AbstractCegarLoop]: Abstraction has 31891 states and 43233 transitions. [2021-11-19 14:47:46,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 4 states have call successors, (87), 3 states have call predecessors, (87), 3 states have return successors, (82), 4 states have call predecessors, (82), 4 states have call successors, (82) [2021-11-19 14:47:46,908 INFO L276 IsEmpty]: Start isEmpty. Operand 31891 states and 43233 transitions. [2021-11-19 14:47:46,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2021-11-19 14:47:46,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:46,932 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 14, 14, 12, 12, 12, 12, 12, 12, 7, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 14:47:46,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:47,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:47,134 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:47:47,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:47,134 INFO L85 PathProgramCache]: Analyzing trace with hash 298140524, now seen corresponding path program 1 times [2021-11-19 14:47:47,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:47,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810546256] [2021-11-19 14:47:47,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:47,139 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:47,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:47,140 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:47,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 14:47:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:49,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:47:49,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:50,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 1161 trivial. 0 not checked. [2021-11-19 14:47:50,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:51,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1344 trivial. 0 not checked. [2021-11-19 14:47:51,345 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:51,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810546256] [2021-11-19 14:47:51,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810546256] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:51,345 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:51,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:47:51,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835444130] [2021-11-19 14:47:51,346 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:51,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:47:51,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:51,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:47:51,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:47:51,347 INFO L87 Difference]: Start difference. First operand 31891 states and 43233 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 4 states have call successors, (85), 3 states have call predecessors, (85), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2021-11-19 14:47:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:58,370 INFO L93 Difference]: Finished difference Result 70523 states and 95503 transitions. [2021-11-19 14:47:58,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:47:58,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 4 states have call successors, (85), 3 states have call predecessors, (85), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 444 [2021-11-19 14:47:58,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:58,498 INFO L225 Difference]: With dead ends: 70523 [2021-11-19 14:47:58,498 INFO L226 Difference]: Without dead ends: 38759 [2021-11-19 14:47:58,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 884 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:47:58,558 INFO L933 BasicCegarLoop]: 3010 mSDtfsCounter, 2919 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2919 SdHoareTripleChecker+Valid, 4858 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:58,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2919 Valid, 4858 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 14:47:58,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38759 states. [2021-11-19 14:48:03,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38759 to 38747. [2021-11-19 14:48:03,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38747 states, 26781 states have (on average 1.244875098017251) internal successors, (33339), 27192 states have internal predecessors, (33339), 9499 states have call successors, (9499), 2477 states have call predecessors, (9499), 2465 states have return successors, (9499), 9409 states have call predecessors, (9499), 9499 states have call successors, (9499) [2021-11-19 14:48:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38747 states to 38747 states and 52337 transitions. [2021-11-19 14:48:03,414 INFO L78 Accepts]: Start accepts. Automaton has 38747 states and 52337 transitions. Word has length 444 [2021-11-19 14:48:03,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:48:03,415 INFO L470 AbstractCegarLoop]: Abstraction has 38747 states and 52337 transitions. [2021-11-19 14:48:03,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 4 states have call successors, (85), 3 states have call predecessors, (85), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2021-11-19 14:48:03,415 INFO L276 IsEmpty]: Start isEmpty. Operand 38747 states and 52337 transitions. [2021-11-19 14:48:03,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2021-11-19 14:48:03,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:48:03,437 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 14, 14, 14, 14, 14, 14, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:48:03,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:03,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:48:03,638 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:48:03,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:48:03,638 INFO L85 PathProgramCache]: Analyzing trace with hash 881103459, now seen corresponding path program 1 times [2021-11-19 14:48:03,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:48:03,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467952013] [2021-11-19 14:48:03,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:03,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:48:03,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:48:03,643 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:48:03,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb6ea32-ffae-44e0-8d3d-6b0efb6863ab/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 14:48:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:06,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 3297 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:48:06,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1758 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 1241 trivial. 0 not checked. [2021-11-19 14:48:07,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:09,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1758 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1742 trivial. 0 not checked. [2021-11-19 14:48:09,357 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:48:09,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467952013] [2021-11-19 14:48:09,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467952013] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:48:09,358 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:48:09,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 14:48:09,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287075025] [2021-11-19 14:48:09,359 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:48:09,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:48:09,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:48:09,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:48:09,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:48:09,362 INFO L87 Difference]: Start difference. First operand 38747 states and 52337 transitions. Second operand has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 2 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2021-11-19 14:48:11,574 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 []