./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/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_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/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_4ffa6588-410b-4909-8fff-a83ba1f62b54/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 91f73b42c8fe3db55fbb7a7497120df3b9b2fa6084f78fe538d2c182c8caed17 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:27:26,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:27:26,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:27:26,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:27:26,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:27:26,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:27:26,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:27:26,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:27:26,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:27:26,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:27:26,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:27:26,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:27:26,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:27:26,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:27:26,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:27:26,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:27:26,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:27:26,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:27:26,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:27:26,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:27:26,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:27:26,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:27:26,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:27:26,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:27:26,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:27:26,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:27:26,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:27:26,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:27:26,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:27:26,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:27:26,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:27:26,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:27:26,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:27:26,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:27:26,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:27:26,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:27:26,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:27:26,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:27:26,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:27:26,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:27:26,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:27:26,129 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:27:26,157 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:27:26,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:27:26,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:27:26,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:27:26,159 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:27:26,159 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:27:26,159 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:27:26,159 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:27:26,160 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:27:26,160 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:27:26,160 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:27:26,160 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:27:26,160 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:27:26,161 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:27:26,161 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:27:26,161 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:27:26,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:27:26,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:27:26,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:27:26,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:27:26,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:27:26,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:27:26,163 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:27:26,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:27:26,164 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:27:26,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:27:26,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:27:26,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:27:26,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:27:26,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:27:26,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:27:26,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:27:26,165 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:27:26,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:27:26,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:27:26,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:27:26,166 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:27:26,166 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_4ffa6588-410b-4909-8fff-a83ba1f62b54/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91f73b42c8fe3db55fbb7a7497120df3b9b2fa6084f78fe538d2c182c8caed17 [2021-11-19 13:27:26,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:27:26,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:27:26,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:27:26,441 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:27:26,442 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:27:26,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i [2021-11-19 13:27:26,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/data/c46072ebd/e61c66324ff34b4b845dbcce1fac117d/FLAG37d2625b5 [2021-11-19 13:27:27,815 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:27:27,817 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i [2021-11-19 13:27:27,904 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/data/c46072ebd/e61c66324ff34b4b845dbcce1fac117d/FLAG37d2625b5 [2021-11-19 13:27:28,364 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/data/c46072ebd/e61c66324ff34b4b845dbcce1fac117d [2021-11-19 13:27:28,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:27:28,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:27:28,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:27:28,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:27:28,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:27:28,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:27:28" (1/1) ... [2021-11-19 13:27:28,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c9f39c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:28, skipping insertion in model container [2021-11-19 13:27:28,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:27:28" (1/1) ... [2021-11-19 13:27:28,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:27:28,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:27:33,560 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 13:27:33,689 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 13:27:33,854 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 13:27:33,855 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 13:27:34,253 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 13:27:34,266 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 13:27:36,567 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_4ffa6588-410b-4909-8fff-a83ba1f62b54/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583669,583682] [2021-11-19 13:27:36,579 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_4ffa6588-410b-4909-8fff-a83ba1f62b54/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583838,583851] [2021-11-19 13:27:36,582 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_4ffa6588-410b-4909-8fff-a83ba1f62b54/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584005,584018] [2021-11-19 13:27:36,583 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_4ffa6588-410b-4909-8fff-a83ba1f62b54/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584173,584186] [2021-11-19 13:27:36,641 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:27:36,810 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 13:27:36,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@52c7bb63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:36, skipping insertion in model container [2021-11-19 13:27:36,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:27:36,811 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:27:36,814 INFO L158 Benchmark]: Toolchain (without parser) took 8444.05ms. Allocated memory was 138.4MB in the beginning and 260.0MB in the end (delta: 121.6MB). Free memory was 103.4MB in the beginning and 187.9MB in the end (delta: -84.5MB). Peak memory consumption was 136.1MB. Max. memory is 16.1GB. [2021-11-19 13:27:36,815 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 113.2MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:27:36,817 INFO L158 Benchmark]: CACSL2BoogieTranslator took 8440.90ms. Allocated memory was 138.4MB in the beginning and 260.0MB in the end (delta: 121.6MB). Free memory was 103.4MB in the beginning and 187.9MB in the end (delta: -84.5MB). Peak memory consumption was 136.1MB. Max. memory is 16.1GB. [2021-11-19 13:27:36,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 113.2MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 8440.90ms. Allocated memory was 138.4MB in the beginning and 260.0MB in the end (delta: 121.6MB). Free memory was 103.4MB in the beginning and 187.9MB in the end (delta: -84.5MB). Peak memory consumption was 136.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7159]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/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_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/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_4ffa6588-410b-4909-8fff-a83ba1f62b54/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 91f73b42c8fe3db55fbb7a7497120df3b9b2fa6084f78fe538d2c182c8caed17 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:27:39,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:27:39,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:27:39,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:27:39,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:27:39,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:27:39,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:27:39,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:27:39,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:27:39,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:27:39,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:27:39,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:27:39,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:27:39,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:27:39,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:27:39,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:27:39,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:27:39,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:27:39,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:27:39,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:27:39,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:27:39,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:27:39,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:27:39,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:27:39,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:27:39,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:27:39,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:27:39,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:27:39,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:27:39,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:27:39,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:27:39,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:27:39,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:27:39,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:27:39,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:27:39,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:27:39,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:27:39,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:27:39,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:27:39,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:27:39,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:27:39,478 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:27:39,530 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:27:39,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:27:39,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:27:39,533 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:27:39,533 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:27:39,533 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:27:39,534 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:27:39,534 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:27:39,535 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:27:39,535 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:27:39,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:27:39,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:27:39,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:27:39,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:27:39,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:27:39,538 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:27:39,539 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:27:39,539 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:27:39,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:27:39,540 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:27:39,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:27:39,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:27:39,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:27:39,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:27:39,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:27:39,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:27:39,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:27:39,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:27:39,543 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:27:39,543 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:27:39,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:27:39,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:27:39,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:27:39,544 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_4ffa6588-410b-4909-8fff-a83ba1f62b54/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91f73b42c8fe3db55fbb7a7497120df3b9b2fa6084f78fe538d2c182c8caed17 [2021-11-19 13:27:39,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:27:40,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:27:40,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:27:40,032 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:27:40,035 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:27:40,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i [2021-11-19 13:27:40,139 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/data/543e85f10/36001f6d79f345e990c45d5b87c6554f/FLAG9f125d8a5 [2021-11-19 13:27:41,566 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:27:41,567 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i [2021-11-19 13:27:41,677 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/data/543e85f10/36001f6d79f345e990c45d5b87c6554f/FLAG9f125d8a5 [2021-11-19 13:27:42,158 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/data/543e85f10/36001f6d79f345e990c45d5b87c6554f [2021-11-19 13:27:42,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:27:42,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:27:42,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:27:42,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:27:42,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:27:42,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:27:42" (1/1) ... [2021-11-19 13:27:42,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f2590d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:42, skipping insertion in model container [2021-11-19 13:27:42,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:27:42" (1/1) ... [2021-11-19 13:27:42,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:27:42,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:27:50,410 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_4ffa6588-410b-4909-8fff-a83ba1f62b54/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583669,583682] [2021-11-19 13:27:50,414 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_4ffa6588-410b-4909-8fff-a83ba1f62b54/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583838,583851] [2021-11-19 13:27:50,415 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_4ffa6588-410b-4909-8fff-a83ba1f62b54/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584005,584018] [2021-11-19 13:27:50,415 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_4ffa6588-410b-4909-8fff-a83ba1f62b54/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584173,584186] [2021-11-19 13:27:50,467 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:27:50,547 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:27:50,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:27:51,324 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_4ffa6588-410b-4909-8fff-a83ba1f62b54/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583669,583682] [2021-11-19 13:27:51,325 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_4ffa6588-410b-4909-8fff-a83ba1f62b54/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583838,583851] [2021-11-19 13:27:51,325 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_4ffa6588-410b-4909-8fff-a83ba1f62b54/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584005,584018] [2021-11-19 13:27:51,326 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_4ffa6588-410b-4909-8fff-a83ba1f62b54/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584173,584186] [2021-11-19 13:27:51,335 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:27:51,371 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:27:52,633 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_4ffa6588-410b-4909-8fff-a83ba1f62b54/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583669,583682] [2021-11-19 13:27:52,634 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_4ffa6588-410b-4909-8fff-a83ba1f62b54/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583838,583851] [2021-11-19 13:27:52,635 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_4ffa6588-410b-4909-8fff-a83ba1f62b54/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584005,584018] [2021-11-19 13:27:52,636 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_4ffa6588-410b-4909-8fff-a83ba1f62b54/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584173,584186] [2021-11-19 13:27:52,654 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:27:53,297 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:27:53,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:53 WrapperNode [2021-11-19 13:27:53,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:27:53,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:27:53,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:27:53,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:27:53,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:53" (1/1) ... [2021-11-19 13:27:53,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:53" (1/1) ... [2021-11-19 13:27:53,934 INFO L137 Inliner]: procedures = 813, calls = 5626, calls flagged for inlining = 404, calls inlined = 343, statements flattened = 10835 [2021-11-19 13:27:53,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:27:53,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:27:53,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:27:53,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:27:53,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:53" (1/1) ... [2021-11-19 13:27:53,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:53" (1/1) ... [2021-11-19 13:27:54,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:53" (1/1) ... [2021-11-19 13:27:54,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:53" (1/1) ... [2021-11-19 13:27:54,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:53" (1/1) ... [2021-11-19 13:27:54,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:53" (1/1) ... [2021-11-19 13:27:54,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:53" (1/1) ... [2021-11-19 13:27:54,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:27:54,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:27:54,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:27:54,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:27:54,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:53" (1/1) ... [2021-11-19 13:27:54,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:27:54,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:27:54,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:27:54,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:27:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 13:27:54,794 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 13:27:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_remove [2021-11-19 13:27:54,794 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_remove [2021-11-19 13:27:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_led [2021-11-19 13:27:54,795 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_led [2021-11-19 13:27:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_alloc_rx_skbs [2021-11-19 13:27:54,795 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_alloc_rx_skbs [2021-11-19 13:27:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 13:27:54,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 13:27:54,796 INFO L130 BoogieDeclarations]: Found specification of procedure rx_set_rss [2021-11-19 13:27:54,796 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_set_rss [2021-11-19 13:27:54,796 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_power_aux [2021-11-19 13:27:54,796 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_power_aux [2021-11-19 13:27:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 13:27:54,797 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 13:27:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2021-11-19 13:27:54,797 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2021-11-19 13:27:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-19 13:27:54,798 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-19 13:27:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_add_filter [2021-11-19 13:27:54,798 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_add_filter [2021-11-19 13:27:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-19 13:27:54,798 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-19 13:27:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure PageTail [2021-11-19 13:27:54,799 INFO L138 BoogieDeclarations]: Found implementation of procedure PageTail [2021-11-19 13:27:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size_set [2021-11-19 13:27:54,799 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size_set [2021-11-19 13:27:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-19 13:27:54,800 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-19 13:27:54,800 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-19 13:27:54,800 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-19 13:27:54,800 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_init_netdev [2021-11-19 13:27:54,800 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_init_netdev [2021-11-19 13:27:54,801 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-19 13:27:54,801 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-19 13:27:54,801 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-19 13:27:54,801 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-19 13:27:54,801 INFO L130 BoogieDeclarations]: Found specification of procedure netif_schedule_queue [2021-11-19 13:27:54,802 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_schedule_queue [2021-11-19 13:27:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_get_regs_len [2021-11-19 13:27:54,802 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_get_regs_len [2021-11-19 13:27:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-19 13:27:54,802 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-19 13:27:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_update [2021-11-19 13:27:54,803 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_update [2021-11-19 13:27:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 13:27:54,803 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 13:27:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 13:27:54,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 13:27:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_ramset [2021-11-19 13:27:54,804 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_ramset [2021-11-19 13:27:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-19 13:27:54,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-19 13:27:54,805 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_update_features [2021-11-19 13:27:54,805 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_update_features [2021-11-19 13:27:54,805 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_netpoll [2021-11-19 13:27:54,805 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_netpoll [2021-11-19 13:27:54,805 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-19 13:27:54,806 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-19 13:27:54,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 13:27:54,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 13:27:54,806 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2021-11-19 13:27:54,806 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2021-11-19 13:27:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-19 13:27:54,807 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-19 13:27:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-19 13:27:54,807 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-19 13:27:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-19 13:27:54,808 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-19 13:27:54,808 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_tx_lock [2021-11-19 13:27:54,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_tx_lock [2021-11-19 13:27:54,808 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-19 13:27:54,808 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-19 13:27:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 13:27:54,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 13:27:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:27:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_add [2021-11-19 13:27:54,809 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_add [2021-11-19 13:27:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev [2021-11-19 13:27:54,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev [2021-11-19 13:27:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:27:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_map_skb [2021-11-19 13:27:54,810 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_map_skb [2021-11-19 13:27:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_resume [2021-11-19 13:27:54,811 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_resume [2021-11-19 13:27:54,811 INFO L130 BoogieDeclarations]: Found specification of procedure roundup_ring_size [2021-11-19 13:27:54,811 INFO L138 BoogieDeclarations]: Found implementation of procedure roundup_ring_size [2021-11-19 13:27:54,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 13:27:54,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 13:27:54,812 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 13:27:54,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 13:27:54,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:27:54,812 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-19 13:27:54,812 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_pci_read32 [2021-11-19 13:27:54,813 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_pci_read32 [2021-11-19 13:27:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2021-11-19 13:27:54,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2021-11-19 13:27:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_disable [2021-11-19 13:27:54,813 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_disable [2021-11-19 13:27:54,814 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_clean [2021-11-19 13:27:54,814 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_clean [2021-11-19 13:27:54,814 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-19 13:27:54,814 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-19 13:27:54,814 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 13:27:54,815 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 13:27:54,815 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_hw_down [2021-11-19 13:27:54,815 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_hw_down [2021-11-19 13:27:54,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-19 13:27:54,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-19 13:27:54,816 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_phy_reinit [2021-11-19 13:27:54,816 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_phy_reinit [2021-11-19 13:27:54,816 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-19 13:27:54,816 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-19 13:27:54,816 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_pci_read16 [2021-11-19 13:27:54,817 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_pci_read16 [2021-11-19 13:27:54,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:27:54,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:27:54,817 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_pci_write16 [2021-11-19 13:27:54,817 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_pci_write16 [2021-11-19 13:27:54,818 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-19 13:27:54,818 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-19 13:27:54,818 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_free_buffers [2021-11-19 13:27:54,818 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_free_buffers [2021-11-19 13:27:54,818 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-19 13:27:54,818 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-19 13:27:54,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 13:27:54,819 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-19 13:27:54,819 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-19 13:27:54,819 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2021-11-19 13:27:54,819 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2021-11-19 13:27:54,820 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-19 13:27:54,820 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-19 13:27:54,820 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_read32 [2021-11-19 13:27:54,820 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_read32 [2021-11-19 13:27:54,820 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-19 13:27:54,821 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_set_multicast [2021-11-19 13:27:54,821 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_set_multicast [2021-11-19 13:27:54,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-19 13:27:54,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-19 13:27:54,821 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_prefetch_init [2021-11-19 13:27:54,821 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_prefetch_init [2021-11-19 13:27:54,822 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_reset [2021-11-19 13:27:54,822 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_reset [2021-11-19 13:27:54,822 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-19 13:27:54,822 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-19 13:27:54,823 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-19 13:27:54,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-19 13:27:54,823 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-19 13:27:54,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-19 13:27:54,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_phy_lock_of_sky2_port [2021-11-19 13:27:54,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_phy_lock_of_sky2_port [2021-11-19 13:27:54,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 13:27:54,824 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 13:27:54,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-19 13:27:54,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-19 13:27:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-19 13:27:54,825 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-19 13:27:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_vpd_wait [2021-11-19 13:27:54,825 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_vpd_wait [2021-11-19 13:27:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-19 13:27:54,825 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-19 13:27:54,826 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_shutdown [2021-11-19 13:27:54,826 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_shutdown [2021-11-19 13:27:54,826 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_read16 [2021-11-19 13:27:54,826 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_read16 [2021-11-19 13:27:54,826 INFO L130 BoogieDeclarations]: Found specification of procedure get_tx_le [2021-11-19 13:27:54,827 INFO L138 BoogieDeclarations]: Found implementation of procedure get_tx_le [2021-11-19 13:27:54,827 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_stop [2021-11-19 13:27:54,827 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_stop [2021-11-19 13:27:54,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:27:54,827 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-19 13:27:54,827 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-19 13:27:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:27:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_all_down [2021-11-19 13:27:54,828 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_all_down [2021-11-19 13:27:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-19 13:27:54,828 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-19 13:27:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure __gm_phy_read [2021-11-19 13:27:54,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __gm_phy_read [2021-11-19 13:27:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 13:27:54,829 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 13:27:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure pci_find_capability [2021-11-19 13:27:54,829 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_find_capability [2021-11-19 13:27:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-19 13:27:54,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-19 13:27:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure gma_write16 [2021-11-19 13:27:54,830 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_write16 [2021-11-19 13:27:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-19 13:27:54,831 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-19 13:27:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_next_rx [2021-11-19 13:27:54,831 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_next_rx [2021-11-19 13:27:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-19 13:27:54,831 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-19 13:27:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_irq [2021-11-19 13:27:54,832 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_irq [2021-11-19 13:27:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_get_eeprom_len [2021-11-19 13:27:54,832 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_get_eeprom_len [2021-11-19 13:27:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 13:27:54,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 13:27:54,833 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 13:27:54,833 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 13:27:54,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_79 [2021-11-19 13:27:54,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_79 [2021-11-19 13:27:54,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 13:27:54,833 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_us2clk [2021-11-19 13:27:54,834 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_us2clk [2021-11-19 13:27:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 13:27:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 13:27:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 13:27:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 13:27:54,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 13:27:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2021-11-19 13:27:54,835 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2021-11-19 13:27:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-11-19 13:27:54,835 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-11-19 13:27:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure device_may_wakeup [2021-11-19 13:27:54,836 INFO L138 BoogieDeclarations]: Found implementation of procedure device_may_wakeup [2021-11-19 13:27:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-19 13:27:54,836 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-19 13:27:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_qset [2021-11-19 13:27:54,836 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_qset [2021-11-19 13:27:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_mhz [2021-11-19 13:27:54,837 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_mhz [2021-11-19 13:27:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-19 13:27:54,837 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-19 13:27:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 13:27:54,837 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 13:27:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-19 13:27:54,838 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-19 13:27:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats32 [2021-11-19 13:27:54,838 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats32 [2021-11-19 13:27:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 13:27:54,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 13:27:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-19 13:27:54,839 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-19 13:27:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_supported_modes [2021-11-19 13:27:54,839 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_supported_modes [2021-11-19 13:27:54,840 INFO L130 BoogieDeclarations]: Found specification of procedure gm_phy_read [2021-11-19 13:27:54,840 INFO L138 BoogieDeclarations]: Found implementation of procedure gm_phy_read [2021-11-19 13:27:54,840 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_alloc [2021-11-19 13:27:54,840 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_alloc [2021-11-19 13:27:54,840 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 13:27:54,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 13:27:54,841 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2021-11-19 13:27:54,841 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2021-11-19 13:27:54,841 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_tx_unlock [2021-11-19 13:27:54,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_tx_unlock [2021-11-19 13:27:54,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 13:27:54,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 13:27:54,842 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_show_addr [2021-11-19 13:27:54,842 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_show_addr [2021-11-19 13:27:54,842 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-19 13:27:54,842 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-19 13:27:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_close [2021-11-19 13:27:54,843 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_close [2021-11-19 13:27:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-19 13:27:54,843 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-19 13:27:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 13:27:54,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 13:27:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_start [2021-11-19 13:27:54,844 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_start [2021-11-19 13:27:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:27:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 13:27:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:27:54,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:27:54,845 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2021-11-19 13:27:54,845 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2021-11-19 13:27:54,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 13:27:54,845 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats64 [2021-11-19 13:27:54,845 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats64 [2021-11-19 13:27:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-19 13:27:54,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-19 13:27:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-19 13:27:54,846 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-19 13:27:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 13:27:54,846 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 13:27:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure pci_is_pcie [2021-11-19 13:27:54,847 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_is_pcie [2021-11-19 13:27:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-19 13:27:54,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-19 13:27:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 13:27:54,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 13:27:54,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_80 [2021-11-19 13:27:54,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_80 [2021-11-19 13:27:54,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 13:27:54,848 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 13:27:54,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-19 13:27:54,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-19 13:27:54,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 13:27:54,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 13:27:54,849 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_hw_up [2021-11-19 13:27:54,849 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_hw_up [2021-11-19 13:27:54,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interrupt_interrupt_instance_1 [2021-11-19 13:27:54,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interrupt_interrupt_instance_1 [2021-11-19 13:27:54,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interrupt_interrupt_instance_2 [2021-11-19 13:27:54,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interrupt_interrupt_instance_2 [2021-11-19 13:27:54,850 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-11-19 13:27:54,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-11-19 13:27:54,851 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_tx_unmap [2021-11-19 13:27:54,851 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_tx_unmap [2021-11-19 13:27:54,851 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_put_idx [2021-11-19 13:27:54,851 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_put_idx [2021-11-19 13:27:54,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 13:27:54,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 13:27:54,852 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 13:27:54,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 13:27:54,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 13:27:54,852 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_dma_map [2021-11-19 13:27:54,852 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_dma_map [2021-11-19 13:27:54,852 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2021-11-19 13:27:54,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2021-11-19 13:27:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_phy_power_up [2021-11-19 13:27:54,853 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_phy_power_up [2021-11-19 13:27:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_phy_init [2021-11-19 13:27:54,853 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_phy_init [2021-11-19 13:27:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-19 13:27:54,854 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-19 13:27:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_tx_complete [2021-11-19 13:27:54,854 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_tx_complete [2021-11-19 13:27:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2021-11-19 13:27:54,854 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2021-11-19 13:27:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-19 13:27:54,855 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-19 13:27:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 13:27:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure gma_read16 [2021-11-19 13:27:54,855 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_read16 [2021-11-19 13:27:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:27:54,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:27:54,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:27:54,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 13:27:54,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 13:27:54,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 13:27:54,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 13:27:54,857 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_all_up [2021-11-19 13:27:54,857 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_all_up [2021-11-19 13:27:54,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 13:27:54,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 13:27:54,857 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_tx_timeout [2021-11-19 13:27:54,858 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_tx_timeout [2021-11-19 13:27:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-19 13:27:54,858 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-19 13:27:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_wol_supported [2021-11-19 13:27:54,858 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_wol_supported [2021-11-19 13:27:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_pci_write32 [2021-11-19 13:27:54,859 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_pci_write32 [2021-11-19 13:27:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2021-11-19 13:27:54,859 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2021-11-19 13:27:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_submit [2021-11-19 13:27:54,859 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_submit [2021-11-19 13:27:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-19 13:27:54,860 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-19 13:27:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-19 13:27:54,860 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-19 13:27:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_vlan_mode [2021-11-19 13:27:54,860 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_vlan_mode [2021-11-19 13:27:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_read8 [2021-11-19 13:27:54,861 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_read8 [2021-11-19 13:27:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2021-11-19 13:27:54,861 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2021-11-19 13:27:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure gma_read32 [2021-11-19 13:27:54,862 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_read32 [2021-11-19 13:27:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_phy_lock_of_sky2_port [2021-11-19 13:27:54,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_phy_lock_of_sky2_port [2021-11-19 13:27:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure gma_set_addr [2021-11-19 13:27:54,862 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_set_addr [2021-11-19 13:27:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-19 13:27:54,863 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-19 13:27:54,863 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2021-11-19 13:27:54,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2021-11-19 13:27:54,863 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-19 13:27:54,863 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-19 13:27:54,864 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-19 13:27:54,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-19 13:27:54,864 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-19 13:27:54,864 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-19 13:27:54,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:27:54,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 13:27:54,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 13:27:54,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:27:54,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:27:54,865 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_nway_reset [2021-11-19 13:27:54,865 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_nway_reset [2021-11-19 13:27:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-19 13:27:54,866 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-19 13:27:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-19 13:27:54,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-19 13:27:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-19 13:27:54,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-19 13:27:54,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-19 13:27:54,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-19 13:27:54,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 13:27:54,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 13:27:54,867 INFO L130 BoogieDeclarations]: Found specification of procedure tx_avail [2021-11-19 13:27:54,868 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_avail [2021-11-19 13:27:54,868 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_unmap_skb [2021-11-19 13:27:54,868 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_unmap_skb [2021-11-19 13:27:54,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-19 13:27:54,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-19 13:27:54,868 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_clk2us [2021-11-19 13:27:54,869 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_clk2us [2021-11-19 13:27:54,869 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_set_tx_stfwd [2021-11-19 13:27:54,869 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_set_tx_stfwd [2021-11-19 13:27:54,869 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_enable_rx_tx [2021-11-19 13:27:54,869 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_enable_rx_tx [2021-11-19 13:27:54,869 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 13:27:54,870 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 13:27:54,870 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-19 13:27:54,870 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-19 13:27:54,870 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-19 13:27:54,870 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-19 13:27:54,871 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_setup_irq [2021-11-19 13:27:54,871 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_setup_irq [2021-11-19 13:27:54,871 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 13:27:54,871 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 13:27:54,871 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-11-19 13:27:54,871 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-11-19 13:27:54,872 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_is_copper [2021-11-19 13:27:54,872 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_is_copper [2021-11-19 13:27:54,872 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-19 13:27:54,872 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-19 13:27:54,872 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_suspend [2021-11-19 13:27:54,873 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_suspend [2021-11-19 13:27:54,873 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-19 13:27:54,873 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-19 13:27:54,873 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_write16 [2021-11-19 13:27:54,873 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_write16 [2021-11-19 13:27:54,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 13:27:54,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 13:27:54,874 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-19 13:27:54,874 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-19 13:27:54,874 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_write8 [2021-11-19 13:27:54,874 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_write8 [2021-11-19 13:27:54,875 INFO L130 BoogieDeclarations]: Found specification of procedure gm_phy_write [2021-11-19 13:27:54,875 INFO L138 BoogieDeclarations]: Found implementation of procedure gm_phy_write [2021-11-19 13:27:54,875 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2021-11-19 13:27:54,875 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2021-11-19 13:27:54,875 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-19 13:27:54,875 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-19 13:27:54,876 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_write32 [2021-11-19 13:27:54,876 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_write32 [2021-11-19 13:27:54,876 INFO L130 BoogieDeclarations]: Found specification of procedure gma_read64 [2021-11-19 13:27:54,876 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_read64 [2021-11-19 13:27:54,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 13:27:54,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 13:27:54,877 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-19 13:27:54,877 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-19 13:27:54,877 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_open [2021-11-19 13:27:54,877 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_open [2021-11-19 13:27:54,877 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-19 13:27:56,260 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:27:56,265 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:27:56,449 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 13:28:54,918 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:28:54,944 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:28:54,944 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-19 13:28:54,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:28:54 BoogieIcfgContainer [2021-11-19 13:28:54,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:28:54,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:28:54,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:28:54,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:28:54,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:27:42" (1/3) ... [2021-11-19 13:28:54,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d947a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:28:54, skipping insertion in model container [2021-11-19 13:28:54,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:53" (2/3) ... [2021-11-19 13:28:54,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d947a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:28:54, skipping insertion in model container [2021-11-19 13:28:54,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:28:54" (3/3) ... [2021-11-19 13:28:54,961 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i [2021-11-19 13:28:54,966 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:28:54,967 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 13:28:55,031 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:28:55,037 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 13:28:55,037 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 13:28:55,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 3880 states, 2516 states have (on average 1.273449920508744) internal successors, (3204), 2622 states have internal predecessors, (3204), 1154 states have call successors, (1154), 208 states have call predecessors, (1154), 207 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-19 13:28:55,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 13:28:55,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:28:55,133 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:28:55,133 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 13:28:55,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:28:55,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1734111632, now seen corresponding path program 1 times [2021-11-19 13:28:55,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:28:55,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108892883] [2021-11-19 13:28:55,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:28:55,160 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:28:55,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:28:55,165 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:28:55,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:29:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:29:01,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 3975 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:29:01,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:29:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 13:29:03,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:29:04,201 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 13:29:04,202 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:29:04,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108892883] [2021-11-19 13:29:04,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108892883] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:29:04,203 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:29:04,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-19 13:29:04,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354374935] [2021-11-19 13:29:04,206 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:29:04,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:29:04,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:29:04,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:29:04,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:29:04,254 INFO L87 Difference]: Start difference. First operand has 3880 states, 2516 states have (on average 1.273449920508744) internal successors, (3204), 2622 states have internal predecessors, (3204), 1154 states have call successors, (1154), 208 states have call predecessors, (1154), 207 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 13:29:05,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:29:05,373 INFO L93 Difference]: Finished difference Result 7661 states and 11000 transitions. [2021-11-19 13:29:05,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:29:05,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 62 [2021-11-19 13:29:05,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:29:05,479 INFO L225 Difference]: With dead ends: 7661 [2021-11-19 13:29:05,480 INFO L226 Difference]: Without dead ends: 3852 [2021-11-19 13:29:05,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:29:05,522 INFO L933 BasicCegarLoop]: 5417 mSDtfsCounter, 5327 mSDsluCounter, 10872 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5342 SdHoareTripleChecker+Valid, 16289 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:29:05,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5342 Valid, 16289 Invalid, 26 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:29:05,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2021-11-19 13:29:05,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 3850. [2021-11-19 13:29:05,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3850 states, 2484 states have (on average 1.2536231884057971) internal successors, (3114), 2587 states have internal predecessors, (3114), 1149 states have call successors, (1149), 215 states have call predecessors, (1149), 214 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-19 13:29:05,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 5409 transitions. [2021-11-19 13:29:05,957 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 5409 transitions. Word has length 62 [2021-11-19 13:29:05,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:29:05,960 INFO L470 AbstractCegarLoop]: Abstraction has 3850 states and 5409 transitions. [2021-11-19 13:29:05,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 13:29:05,963 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 5409 transitions. [2021-11-19 13:29:05,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 13:29:05,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:29:05,979 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:29:06,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:29:06,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:29:06,196 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:29:06,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:29:06,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2059272523, now seen corresponding path program 1 times [2021-11-19 13:29:06,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:29:06,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053423435] [2021-11-19 13:29:06,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:29:06,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:29:06,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:29:06,213 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:29:06,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:29:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:29:12,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 3982 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:29:12,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:29:14,252 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 13:29:14,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:29:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 13:29:15,058 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:29:15,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053423435] [2021-11-19 13:29:15,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053423435] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:29:15,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:29:15,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:29:15,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469998865] [2021-11-19 13:29:15,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:29:15,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:29:15,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:29:15,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:29:15,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:29:15,062 INFO L87 Difference]: Start difference. First operand 3850 states and 5409 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 13:29:15,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:29:15,907 INFO L93 Difference]: Finished difference Result 3856 states and 5414 transitions. [2021-11-19 13:29:15,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:29:15,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67 [2021-11-19 13:29:15,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:29:15,950 INFO L225 Difference]: With dead ends: 3856 [2021-11-19 13:29:15,950 INFO L226 Difference]: Without dead ends: 3854 [2021-11-19 13:29:15,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:29:15,956 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5351 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:29:15,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5351 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:29:15,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2021-11-19 13:29:16,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 3854. [2021-11-19 13:29:16,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3854 states, 2487 states have (on average 1.253317249698432) internal successors, (3117), 2590 states have internal predecessors, (3117), 1149 states have call successors, (1149), 216 states have call predecessors, (1149), 215 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-19 13:29:16,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3854 states to 3854 states and 5412 transitions. [2021-11-19 13:29:16,265 INFO L78 Accepts]: Start accepts. Automaton has 3854 states and 5412 transitions. Word has length 67 [2021-11-19 13:29:16,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:29:16,267 INFO L470 AbstractCegarLoop]: Abstraction has 3854 states and 5412 transitions. [2021-11-19 13:29:16,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 13:29:16,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3854 states and 5412 transitions. [2021-11-19 13:29:16,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-19 13:29:16,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:29:16,270 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:29:16,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:29:16,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:29:16,492 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:29:16,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:29:16,492 INFO L85 PathProgramCache]: Analyzing trace with hash 688715888, now seen corresponding path program 1 times [2021-11-19 13:29:16,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:29:16,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211592350] [2021-11-19 13:29:16,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:29:16,506 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:29:16,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:29:16,507 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:29:16,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:29:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:29:22,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 3989 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:29:22,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:29:23,891 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-19 13:29:23,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:29:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-19 13:29:24,768 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:29:24,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211592350] [2021-11-19 13:29:24,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211592350] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:29:24,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:29:24,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:29:24,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118765275] [2021-11-19 13:29:24,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:29:24,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:29:24,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:29:24,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:29:24,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:29:24,770 INFO L87 Difference]: Start difference. First operand 3854 states and 5412 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 13:29:25,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:29:25,576 INFO L93 Difference]: Finished difference Result 3860 states and 5417 transitions. [2021-11-19 13:29:25,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:29:25,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2021-11-19 13:29:25,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:29:25,612 INFO L225 Difference]: With dead ends: 3860 [2021-11-19 13:29:25,612 INFO L226 Difference]: Without dead ends: 3858 [2021-11-19 13:29:25,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:29:25,621 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5350 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:29:25,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5350 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:29:25,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2021-11-19 13:29:25,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3858. [2021-11-19 13:29:25,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 2490 states have (on average 1.2530120481927711) internal successors, (3120), 2593 states have internal predecessors, (3120), 1149 states have call successors, (1149), 217 states have call predecessors, (1149), 216 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-19 13:29:25,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 5415 transitions. [2021-11-19 13:29:25,931 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 5415 transitions. Word has length 72 [2021-11-19 13:29:25,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:29:25,932 INFO L470 AbstractCegarLoop]: Abstraction has 3858 states and 5415 transitions. [2021-11-19 13:29:25,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 13:29:25,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 5415 transitions. [2021-11-19 13:29:25,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 13:29:25,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:29:25,935 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:29:26,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:29:26,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:29:26,136 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:29:26,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:29:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash 2037183317, now seen corresponding path program 1 times [2021-11-19 13:29:26,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:29:26,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67293803] [2021-11-19 13:29:26,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:29:26,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:29:26,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:29:26,147 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:29:26,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:29:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:29:32,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 3996 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:29:32,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:29:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-19 13:29:33,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:29:34,397 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-19 13:29:34,397 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:29:34,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67293803] [2021-11-19 13:29:34,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67293803] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:29:34,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:29:34,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:29:34,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816706236] [2021-11-19 13:29:34,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:29:34,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:29:34,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:29:34,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:29:34,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:29:34,400 INFO L87 Difference]: Start difference. First operand 3858 states and 5415 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 13:29:35,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:29:35,204 INFO L93 Difference]: Finished difference Result 3864 states and 5420 transitions. [2021-11-19 13:29:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:29:35,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 77 [2021-11-19 13:29:35,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:29:35,243 INFO L225 Difference]: With dead ends: 3864 [2021-11-19 13:29:35,243 INFO L226 Difference]: Without dead ends: 3862 [2021-11-19 13:29:35,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:29:35,252 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5349 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:29:35,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5349 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:29:35,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3862 states. [2021-11-19 13:29:35,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3862 to 3862. [2021-11-19 13:29:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 2493 states have (on average 1.2527075812274369) internal successors, (3123), 2596 states have internal predecessors, (3123), 1149 states have call successors, (1149), 218 states have call predecessors, (1149), 217 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-19 13:29:35,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 5418 transitions. [2021-11-19 13:29:35,611 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 5418 transitions. Word has length 77 [2021-11-19 13:29:35,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:29:35,613 INFO L470 AbstractCegarLoop]: Abstraction has 3862 states and 5418 transitions. [2021-11-19 13:29:35,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 13:29:35,613 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 5418 transitions. [2021-11-19 13:29:35,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-19 13:29:35,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:29:35,615 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:29:35,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:29:35,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:29:35,832 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 13:29:35,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:29:35,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1361307824, now seen corresponding path program 1 times [2021-11-19 13:29:35,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:29:35,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807817426] [2021-11-19 13:29:35,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:29:35,839 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:29:35,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:29:35,840 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:29:35,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:29:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:29:42,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 4003 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:29:42,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:29:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-19 13:29:43,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:29:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-19 13:29:44,370 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:29:44,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807817426] [2021-11-19 13:29:44,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807817426] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:29:44,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:29:44,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:29:44,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151921066] [2021-11-19 13:29:44,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:29:44,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:29:44,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:29:44,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:29:44,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:29:44,372 INFO L87 Difference]: Start difference. First operand 3862 states and 5418 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:29:45,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:29:45,135 INFO L93 Difference]: Finished difference Result 3868 states and 5423 transitions. [2021-11-19 13:29:45,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:29:45,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 82 [2021-11-19 13:29:45,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:29:45,173 INFO L225 Difference]: With dead ends: 3868 [2021-11-19 13:29:45,173 INFO L226 Difference]: Without dead ends: 3866 [2021-11-19 13:29:45,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:29:45,178 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5348 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:29:45,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5348 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:29:45,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2021-11-19 13:29:45,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3866. [2021-11-19 13:29:45,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3866 states, 2496 states have (on average 1.2524038461538463) internal successors, (3126), 2599 states have internal predecessors, (3126), 1149 states have call successors, (1149), 219 states have call predecessors, (1149), 218 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-19 13:29:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3866 states to 3866 states and 5421 transitions. [2021-11-19 13:29:45,471 INFO L78 Accepts]: Start accepts. Automaton has 3866 states and 5421 transitions. Word has length 82 [2021-11-19 13:29:45,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:29:45,472 INFO L470 AbstractCegarLoop]: Abstraction has 3866 states and 5421 transitions. [2021-11-19 13:29:45,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:29:45,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3866 states and 5421 transitions. [2021-11-19 13:29:45,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-19 13:29:45,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:29:45,477 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:29:45,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:29:45,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:29:45,700 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 13:29:45,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:29:45,700 INFO L85 PathProgramCache]: Analyzing trace with hash -744546637, now seen corresponding path program 1 times [2021-11-19 13:29:45,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:29:45,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684724682] [2021-11-19 13:29:45,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:29:45,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:29:45,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:29:45,710 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:29:45,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:29:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:29:52,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 4052 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:29:52,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:29:55,098 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-19 13:29:55,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:29:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-19 13:29:57,533 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:29:57,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684724682] [2021-11-19 13:29:57,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684724682] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:29:57,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1277970989] [2021-11-19 13:29:57,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:29:57,534 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:29:57,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:29:57,536 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:29:57,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-19 13:29:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:29:59,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 4052 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:29:59,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:02,343 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-19 13:30:02,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:03,740 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-19 13:30:03,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1277970989] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:30:03,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:30:03,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 4] total 23 [2021-11-19 13:30:03,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280667785] [2021-11-19 13:30:03,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:03,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:30:03,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:03,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:30:03,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:30:03,743 INFO L87 Difference]: Start difference. First operand 3866 states and 5421 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:30:04,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:04,872 INFO L93 Difference]: Finished difference Result 3872 states and 5426 transitions. [2021-11-19 13:30:04,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:30:04,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 102 [2021-11-19 13:30:04,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:04,903 INFO L225 Difference]: With dead ends: 3872 [2021-11-19 13:30:04,904 INFO L226 Difference]: Without dead ends: 3870 [2021-11-19 13:30:04,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:30:04,909 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5326 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5335 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:04,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5335 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:30:04,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3870 states. [2021-11-19 13:30:05,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3870 to 3870. [2021-11-19 13:30:05,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3870 states, 2499 states have (on average 1.2521008403361344) internal successors, (3129), 2602 states have internal predecessors, (3129), 1149 states have call successors, (1149), 220 states have call predecessors, (1149), 219 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-19 13:30:05,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 5424 transitions. [2021-11-19 13:30:05,177 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 5424 transitions. Word has length 102 [2021-11-19 13:30:05,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:05,177 INFO L470 AbstractCegarLoop]: Abstraction has 3870 states and 5424 transitions. [2021-11-19 13:30:05,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:30:05,178 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 5424 transitions. [2021-11-19 13:30:05,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-19 13:30:05,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:05,180 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:05,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:05,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:05,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:30:05,601 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 13:30:05,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:05,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1251226064, now seen corresponding path program 1 times [2021-11-19 13:30:05,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:05,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875548823] [2021-11-19 13:30:05,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:05,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:05,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:05,613 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:05,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:30:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:12,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 4017 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:30:12,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:13,700 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-19 13:30:13,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-19 13:30:14,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:14,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875548823] [2021-11-19 13:30:14,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875548823] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:30:14,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:30:14,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:30:14,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507409762] [2021-11-19 13:30:14,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:14,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:30:14,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:14,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:30:14,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:30:14,604 INFO L87 Difference]: Start difference. First operand 3870 states and 5424 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:30:15,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:15,390 INFO L93 Difference]: Finished difference Result 3876 states and 5429 transitions. [2021-11-19 13:30:15,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:30:15,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 92 [2021-11-19 13:30:15,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:15,425 INFO L225 Difference]: With dead ends: 3876 [2021-11-19 13:30:15,425 INFO L226 Difference]: Without dead ends: 3874 [2021-11-19 13:30:15,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:30:15,430 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5346 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:15,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5346 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:30:15,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3874 states. [2021-11-19 13:30:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3874 to 3874. [2021-11-19 13:30:15,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3874 states, 2502 states have (on average 1.2517985611510791) internal successors, (3132), 2605 states have internal predecessors, (3132), 1149 states have call successors, (1149), 221 states have call predecessors, (1149), 220 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-19 13:30:15,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 5427 transitions. [2021-11-19 13:30:15,782 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 5427 transitions. Word has length 92 [2021-11-19 13:30:15,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:15,783 INFO L470 AbstractCegarLoop]: Abstraction has 3874 states and 5427 transitions. [2021-11-19 13:30:15,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:30:15,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 5427 transitions. [2021-11-19 13:30:15,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 13:30:15,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:15,787 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:15,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:16,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:16,004 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 13:30:16,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:16,004 INFO L85 PathProgramCache]: Analyzing trace with hash -386134573, now seen corresponding path program 1 times [2021-11-19 13:30:16,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:16,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231702260] [2021-11-19 13:30:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:16,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:16,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:16,009 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:16,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:30:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:22,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 4066 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:30:22,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-19 13:30:24,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:27,279 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-19 13:30:27,279 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:27,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231702260] [2021-11-19 13:30:27,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231702260] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:30:27,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1093429626] [2021-11-19 13:30:27,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:27,280 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:30:27,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:30:27,283 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:30:27,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-19 13:30:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:29,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 4066 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:30:29,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 13:30:32,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:33,534 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 13:30:33,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1093429626] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:30:33,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:30:33,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 4] total 23 [2021-11-19 13:30:33,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981280682] [2021-11-19 13:30:33,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:33,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:30:33,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:33,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:30:33,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:30:33,537 INFO L87 Difference]: Start difference. First operand 3874 states and 5427 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 13:30:34,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:34,587 INFO L93 Difference]: Finished difference Result 3880 states and 5432 transitions. [2021-11-19 13:30:34,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:30:34,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2021-11-19 13:30:34,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:34,615 INFO L225 Difference]: With dead ends: 3880 [2021-11-19 13:30:34,616 INFO L226 Difference]: Without dead ends: 3878 [2021-11-19 13:30:34,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:30:34,621 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5326 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5333 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:34,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5333 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:30:34,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2021-11-19 13:30:34,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3878. [2021-11-19 13:30:34,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 2505 states have (on average 1.251497005988024) internal successors, (3135), 2608 states have internal predecessors, (3135), 1149 states have call successors, (1149), 222 states have call predecessors, (1149), 221 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-19 13:30:34,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 5430 transitions. [2021-11-19 13:30:34,972 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 5430 transitions. Word has length 112 [2021-11-19 13:30:34,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:34,973 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 5430 transitions. [2021-11-19 13:30:34,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 13:30:34,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 5430 transitions. [2021-11-19 13:30:34,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-19 13:30:34,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:34,976 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:35,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:35,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:35,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:30:35,392 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 13:30:35,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:35,392 INFO L85 PathProgramCache]: Analyzing trace with hash 383655184, now seen corresponding path program 1 times [2021-11-19 13:30:35,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:35,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074581705] [2021-11-19 13:30:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:35,398 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:35,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:35,399 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:35,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:30:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:41,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 4031 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:30:41,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-11-19 13:30:43,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-11-19 13:30:44,079 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:44,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074581705] [2021-11-19 13:30:44,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074581705] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:30:44,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:30:44,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:30:44,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397664076] [2021-11-19 13:30:44,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:44,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:30:44,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:44,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:30:44,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:30:44,082 INFO L87 Difference]: Start difference. First operand 3878 states and 5430 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 13:30:44,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:44,968 INFO L93 Difference]: Finished difference Result 3884 states and 5435 transitions. [2021-11-19 13:30:44,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:30:44,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 102 [2021-11-19 13:30:44,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:44,994 INFO L225 Difference]: With dead ends: 3884 [2021-11-19 13:30:44,994 INFO L226 Difference]: Without dead ends: 3882 [2021-11-19 13:30:44,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:30:45,000 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5344 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:45,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5344 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:30:45,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2021-11-19 13:30:45,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3882. [2021-11-19 13:30:45,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 2508 states have (on average 1.2511961722488039) internal successors, (3138), 2611 states have internal predecessors, (3138), 1149 states have call successors, (1149), 223 states have call predecessors, (1149), 222 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2021-11-19 13:30:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5433 transitions. [2021-11-19 13:30:45,316 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5433 transitions. Word has length 102 [2021-11-19 13:30:45,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:45,317 INFO L470 AbstractCegarLoop]: Abstraction has 3882 states and 5433 transitions. [2021-11-19 13:30:45,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 13:30:45,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5433 transitions. [2021-11-19 13:30:45,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-19 13:30:45,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:45,322 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:45,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:45,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:45,535 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 13:30:45,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:45,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1027753203, now seen corresponding path program 1 times [2021-11-19 13:30:45,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:45,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247456468] [2021-11-19 13:30:45,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:45,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:45,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:45,541 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:45,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:30:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:52,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 4080 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:30:52,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:54,896 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-11-19 13:30:54,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-19 13:30:57,536 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:57,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247456468] [2021-11-19 13:30:57,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247456468] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:30:57,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [610021608] [2021-11-19 13:30:57,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:57,537 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:30:57,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:30:57,538 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:30:57,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 13:31:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:00,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 4080 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:31:00,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-19 13:31:03,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-19 13:31:05,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [610021608] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:31:05,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:31:05,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 4] total 23 [2021-11-19 13:31:05,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209998080] [2021-11-19 13:31:05,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:05,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:31:05,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:31:05,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:31:05,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:31:05,353 INFO L87 Difference]: Start difference. First operand 3882 states and 5433 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 13:31:06,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:06,673 INFO L93 Difference]: Finished difference Result 3969 states and 5514 transitions. [2021-11-19 13:31:06,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:31:06,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 122 [2021-11-19 13:31:06,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:06,698 INFO L225 Difference]: With dead ends: 3969 [2021-11-19 13:31:06,698 INFO L226 Difference]: Without dead ends: 3967 [2021-11-19 13:31:06,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:31:06,705 INFO L933 BasicCegarLoop]: 5419 mSDtfsCounter, 4802 mSDsluCounter, 11414 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4807 SdHoareTripleChecker+Valid, 16833 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:06,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4807 Valid, 16833 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:31:06,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3967 states. [2021-11-19 13:31:07,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3967 to 3965. [2021-11-19 13:31:07,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3965 states, 2564 states have (on average 1.2472698907956319) internal successors, (3198), 2667 states have internal predecessors, (3198), 1158 states have call successors, (1158), 241 states have call predecessors, (1158), 240 states have return successors, (1155), 1123 states have call predecessors, (1155), 1155 states have call successors, (1155) [2021-11-19 13:31:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 5511 transitions. [2021-11-19 13:31:07,203 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 5511 transitions. Word has length 122 [2021-11-19 13:31:07,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:07,204 INFO L470 AbstractCegarLoop]: Abstraction has 3965 states and 5511 transitions. [2021-11-19 13:31:07,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 13:31:07,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 5511 transitions. [2021-11-19 13:31:07,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 13:31:07,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:07,209 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:07,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:07,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-19 13:31:07,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:31:07,623 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 13:31:07,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:07,624 INFO L85 PathProgramCache]: Analyzing trace with hash -355138576, now seen corresponding path program 1 times [2021-11-19 13:31:07,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:31:07,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362112114] [2021-11-19 13:31:07,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:07,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:31:07,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:31:07,630 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:31:07,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 13:31:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:14,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 4045 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:31:14,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:16,716 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-11-19 13:31:16,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:17,635 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-11-19 13:31:17,635 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:31:17,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362112114] [2021-11-19 13:31:17,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362112114] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:31:17,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:31:17,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:31:17,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767298147] [2021-11-19 13:31:17,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:17,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:31:17,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:31:17,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:31:17,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:31:17,638 INFO L87 Difference]: Start difference. First operand 3965 states and 5511 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 13:31:18,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:18,457 INFO L93 Difference]: Finished difference Result 3971 states and 5516 transitions. [2021-11-19 13:31:18,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:31:18,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 112 [2021-11-19 13:31:18,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:18,477 INFO L225 Difference]: With dead ends: 3971 [2021-11-19 13:31:18,477 INFO L226 Difference]: Without dead ends: 3969 [2021-11-19 13:31:18,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:31:18,482 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5342 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:18,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5342 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:31:18,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2021-11-19 13:31:18,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 3969. [2021-11-19 13:31:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3969 states, 2567 states have (on average 1.246980911569926) internal successors, (3201), 2670 states have internal predecessors, (3201), 1158 states have call successors, (1158), 242 states have call predecessors, (1158), 241 states have return successors, (1155), 1123 states have call predecessors, (1155), 1155 states have call successors, (1155) [2021-11-19 13:31:18,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3969 states to 3969 states and 5514 transitions. [2021-11-19 13:31:18,830 INFO L78 Accepts]: Start accepts. Automaton has 3969 states and 5514 transitions. Word has length 112 [2021-11-19 13:31:18,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:18,830 INFO L470 AbstractCegarLoop]: Abstraction has 3969 states and 5514 transitions. [2021-11-19 13:31:18,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 13:31:18,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3969 states and 5514 transitions. [2021-11-19 13:31:18,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 13:31:18,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:18,834 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:18,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-19 13:31:19,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:31:19,043 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 13:31:19,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:19,043 INFO L85 PathProgramCache]: Analyzing trace with hash 893965781, now seen corresponding path program 1 times [2021-11-19 13:31:19,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:31:19,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781082349] [2021-11-19 13:31:19,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:19,047 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:31:19,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:31:19,048 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:31:19,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:31:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:25,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 4052 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:31:25,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:26,996 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2021-11-19 13:31:26,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2021-11-19 13:31:27,845 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:31:27,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781082349] [2021-11-19 13:31:27,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781082349] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:31:27,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:31:27,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:31:27,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285090626] [2021-11-19 13:31:27,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:27,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:31:27,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:31:27,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:31:27,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:31:27,846 INFO L87 Difference]: Start difference. First operand 3969 states and 5514 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 13:31:28,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:28,561 INFO L93 Difference]: Finished difference Result 3975 states and 5519 transitions. [2021-11-19 13:31:28,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:31:28,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 117 [2021-11-19 13:31:28,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:28,579 INFO L225 Difference]: With dead ends: 3975 [2021-11-19 13:31:28,580 INFO L226 Difference]: Without dead ends: 3973 [2021-11-19 13:31:28,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:31:28,584 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5341 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:28,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5341 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:31:28,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3973 states. [2021-11-19 13:31:28,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3973 to 3973. [2021-11-19 13:31:28,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3973 states, 2570 states have (on average 1.246692607003891) internal successors, (3204), 2673 states have internal predecessors, (3204), 1158 states have call successors, (1158), 243 states have call predecessors, (1158), 242 states have return successors, (1155), 1123 states have call predecessors, (1155), 1155 states have call successors, (1155) [2021-11-19 13:31:29,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3973 states to 3973 states and 5517 transitions. [2021-11-19 13:31:29,007 INFO L78 Accepts]: Start accepts. Automaton has 3973 states and 5517 transitions. Word has length 117 [2021-11-19 13:31:29,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:29,007 INFO L470 AbstractCegarLoop]: Abstraction has 3973 states and 5517 transitions. [2021-11-19 13:31:29,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 13:31:29,008 INFO L276 IsEmpty]: Start isEmpty. Operand 3973 states and 5517 transitions. [2021-11-19 13:31:29,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-19 13:31:29,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:29,011 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:29,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:29,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:31:29,236 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 13:31:29,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:29,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1502444848, now seen corresponding path program 1 times [2021-11-19 13:31:29,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:31:29,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156712282] [2021-11-19 13:31:29,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:29,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:31:29,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:31:29,241 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:31:29,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 13:31:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:35,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 4059 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:31:35,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-19 13:31:37,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:37,923 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-19 13:31:37,923 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:31:37,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156712282] [2021-11-19 13:31:37,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156712282] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:31:37,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:31:37,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:31:37,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353250537] [2021-11-19 13:31:37,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:37,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:31:37,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:31:37,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:31:37,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:31:37,925 INFO L87 Difference]: Start difference. First operand 3973 states and 5517 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 13:31:38,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:38,618 INFO L93 Difference]: Finished difference Result 3979 states and 5522 transitions. [2021-11-19 13:31:38,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:31:38,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 122 [2021-11-19 13:31:38,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:38,634 INFO L225 Difference]: With dead ends: 3979 [2021-11-19 13:31:38,634 INFO L226 Difference]: Without dead ends: 3977 [2021-11-19 13:31:38,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:31:38,638 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5340 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:38,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5340 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:31:38,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2021-11-19 13:31:39,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3977. [2021-11-19 13:31:39,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3977 states, 2573 states have (on average 1.2464049747376602) internal successors, (3207), 2676 states have internal predecessors, (3207), 1158 states have call successors, (1158), 244 states have call predecessors, (1158), 243 states have return successors, (1155), 1123 states have call predecessors, (1155), 1155 states have call successors, (1155) [2021-11-19 13:31:39,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3977 states to 3977 states and 5520 transitions. [2021-11-19 13:31:39,085 INFO L78 Accepts]: Start accepts. Automaton has 3977 states and 5520 transitions. Word has length 122 [2021-11-19 13:31:39,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:39,085 INFO L470 AbstractCegarLoop]: Abstraction has 3977 states and 5520 transitions. [2021-11-19 13:31:39,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 13:31:39,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3977 states and 5520 transitions. [2021-11-19 13:31:39,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-19 13:31:39,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:39,089 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:39,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-19 13:31:39,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:31:39,311 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 13:31:39,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:39,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1260268939, now seen corresponding path program 1 times [2021-11-19 13:31:39,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:31:39,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048611892] [2021-11-19 13:31:39,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:39,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:31:39,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:31:39,316 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:31:39,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 13:31:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:45,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 4066 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:31:45,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:47,588 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-11-19 13:31:47,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:48,560 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-11-19 13:31:48,561 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:31:48,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048611892] [2021-11-19 13:31:48,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048611892] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:31:48,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:31:48,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:31:48,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616259805] [2021-11-19 13:31:48,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:48,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:31:48,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:31:48,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:31:48,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:31:48,563 INFO L87 Difference]: Start difference. First operand 3977 states and 5520 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 13:31:49,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:49,262 INFO L93 Difference]: Finished difference Result 3983 states and 5525 transitions. [2021-11-19 13:31:49,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:31:49,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 127 [2021-11-19 13:31:49,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:49,281 INFO L225 Difference]: With dead ends: 3983 [2021-11-19 13:31:49,281 INFO L226 Difference]: Without dead ends: 3979 [2021-11-19 13:31:49,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:31:49,285 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5338 mSDsluCounter, 10726 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5339 SdHoareTripleChecker+Valid, 16100 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:49,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5339 Valid, 16100 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:31:49,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2021-11-19 13:31:49,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3979. [2021-11-19 13:31:49,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3979 states, 2575 states have (on average 1.2458252427184466) internal successors, (3208), 2677 states have internal predecessors, (3208), 1158 states have call successors, (1158), 245 states have call predecessors, (1158), 243 states have return successors, (1155), 1123 states have call predecessors, (1155), 1155 states have call successors, (1155) [2021-11-19 13:31:49,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5521 transitions. [2021-11-19 13:31:49,742 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5521 transitions. Word has length 127 [2021-11-19 13:31:49,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:49,742 INFO L470 AbstractCegarLoop]: Abstraction has 3979 states and 5521 transitions. [2021-11-19 13:31:49,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 13:31:49,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5521 transitions. [2021-11-19 13:31:49,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-19 13:31:49,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:49,746 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:49,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:49,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:31:49,968 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 13:31:49,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:49,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1012439472, now seen corresponding path program 1 times [2021-11-19 13:31:49,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:31:49,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90595388] [2021-11-19 13:31:49,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:49,972 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:31:49,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:31:49,973 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:31:49,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 13:31:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:55,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 4073 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:31:55,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2021-11-19 13:31:58,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2021-11-19 13:31:59,064 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:31:59,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90595388] [2021-11-19 13:31:59,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90595388] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:31:59,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:31:59,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:31:59,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236822083] [2021-11-19 13:31:59,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:59,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:31:59,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:31:59,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:31:59,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:31:59,067 INFO L87 Difference]: Start difference. First operand 3979 states and 5521 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 13:31:59,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:59,736 INFO L93 Difference]: Finished difference Result 4043 states and 5580 transitions. [2021-11-19 13:31:59,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:31:59,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 132 [2021-11-19 13:31:59,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:59,747 INFO L225 Difference]: With dead ends: 4043 [2021-11-19 13:31:59,748 INFO L226 Difference]: Without dead ends: 3883 [2021-11-19 13:31:59,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:31:59,751 INFO L933 BasicCegarLoop]: 5379 mSDtfsCounter, 5291 mSDsluCounter, 10836 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5291 SdHoareTripleChecker+Valid, 16215 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:59,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5291 Valid, 16215 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:31:59,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3883 states. [2021-11-19 13:32:00,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3883 to 3879. [2021-11-19 13:32:00,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3879 states, 2514 states have (on average 1.249005568814638) internal successors, (3140), 2610 states have internal predecessors, (3140), 1122 states have call successors, (1122), 241 states have call predecessors, (1122), 241 states have return successors, (1122), 1092 states have call predecessors, (1122), 1122 states have call successors, (1122) [2021-11-19 13:32:00,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3879 states to 3879 states and 5384 transitions. [2021-11-19 13:32:00,209 INFO L78 Accepts]: Start accepts. Automaton has 3879 states and 5384 transitions. Word has length 132 [2021-11-19 13:32:00,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:00,210 INFO L470 AbstractCegarLoop]: Abstraction has 3879 states and 5384 transitions. [2021-11-19 13:32:00,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 13:32:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3879 states and 5384 transitions. [2021-11-19 13:32:00,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-19 13:32:00,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:00,213 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:00,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-19 13:32:00,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:32:00,424 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:32:00,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:00,424 INFO L85 PathProgramCache]: Analyzing trace with hash 186369763, now seen corresponding path program 1 times [2021-11-19 13:32:00,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:32:00,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985044323] [2021-11-19 13:32:00,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:00,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:32:00,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:32:00,429 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:32:00,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 13:32:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:06,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 4218 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:32:06,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:32:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 69 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-19 13:32:09,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:32:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-19 13:32:11,608 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:32:11,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985044323] [2021-11-19 13:32:11,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985044323] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:32:11,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2134055541] [2021-11-19 13:32:11,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:11,609 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:32:11,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:32:11,624 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:32:11,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-19 13:32:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:14,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 4218 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:32:14,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:32:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-19 13:32:14,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:32:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-19 13:32:15,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2134055541] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:15,089 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:32:15,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [15, 15] total 19 [2021-11-19 13:32:15,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512863846] [2021-11-19 13:32:15,091 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:15,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:32:15,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:32:15,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:32:15,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:32:15,095 INFO L87 Difference]: Start difference. First operand 3879 states and 5384 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-19 13:32:15,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:15,622 INFO L93 Difference]: Finished difference Result 7676 states and 10676 transitions. [2021-11-19 13:32:15,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:32:15,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 155 [2021-11-19 13:32:15,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:15,642 INFO L225 Difference]: With dead ends: 7676 [2021-11-19 13:32:15,642 INFO L226 Difference]: Without dead ends: 3880 [2021-11-19 13:32:15,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 599 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:32:15,671 INFO L933 BasicCegarLoop]: 5219 mSDtfsCounter, 0 mSDsluCounter, 5215 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10434 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:15,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10434 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:32:15,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3880 states. [2021-11-19 13:32:16,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3880 to 3880. [2021-11-19 13:32:16,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3880 states, 2515 states have (on average 1.2489065606361829) internal successors, (3141), 2611 states have internal predecessors, (3141), 1122 states have call successors, (1122), 241 states have call predecessors, (1122), 241 states have return successors, (1122), 1092 states have call predecessors, (1122), 1122 states have call successors, (1122) [2021-11-19 13:32:16,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 5385 transitions. [2021-11-19 13:32:16,126 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 5385 transitions. Word has length 155 [2021-11-19 13:32:16,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:16,127 INFO L470 AbstractCegarLoop]: Abstraction has 3880 states and 5385 transitions. [2021-11-19 13:32:16,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-19 13:32:16,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 5385 transitions. [2021-11-19 13:32:16,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-19 13:32:16,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:16,132 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:16,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 13:32:16,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-19 13:32:16,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:32:16,556 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:32:16,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:16,557 INFO L85 PathProgramCache]: Analyzing trace with hash 887434341, now seen corresponding path program 1 times [2021-11-19 13:32:16,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:32:16,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091905235] [2021-11-19 13:32:16,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:16,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:32:16,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:32:16,564 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:32:16,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 13:32:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:23,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 4220 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:32:23,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:32:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 69 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-19 13:32:26,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:32:29,071 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-19 13:32:29,071 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:32:29,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091905235] [2021-11-19 13:32:29,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091905235] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:32:29,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [780436493] [2021-11-19 13:32:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:29,072 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:32:29,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:32:29,074 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:32:29,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-19 13:32:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:32,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 4220 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:32:32,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:32:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-19 13:32:32,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:32:33,602 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-19 13:32:33,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [780436493] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:33,602 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:32:33,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [15, 15] total 21 [2021-11-19 13:32:33,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27781969] [2021-11-19 13:32:33,603 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:33,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:32:33,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:32:33,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:32:33,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:32:33,606 INFO L87 Difference]: Start difference. First operand 3880 states and 5385 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-19 13:32:34,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:34,342 INFO L93 Difference]: Finished difference Result 7682 states and 10683 transitions. [2021-11-19 13:32:34,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:32:34,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 155 [2021-11-19 13:32:34,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:34,375 INFO L225 Difference]: With dead ends: 7682 [2021-11-19 13:32:34,375 INFO L226 Difference]: Without dead ends: 3885 [2021-11-19 13:32:34,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2021-11-19 13:32:34,401 INFO L933 BasicCegarLoop]: 5217 mSDtfsCounter, 7 mSDsluCounter, 10430 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 15647 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:34,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 15647 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:32:34,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2021-11-19 13:32:34,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3882. [2021-11-19 13:32:34,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 2517 states have (on average 1.248708780294001) internal successors, (3143), 2613 states have internal predecessors, (3143), 1122 states have call successors, (1122), 241 states have call predecessors, (1122), 241 states have return successors, (1122), 1092 states have call predecessors, (1122), 1122 states have call successors, (1122) [2021-11-19 13:32:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5387 transitions. [2021-11-19 13:32:34,959 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5387 transitions. Word has length 155 [2021-11-19 13:32:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:34,960 INFO L470 AbstractCegarLoop]: Abstraction has 3882 states and 5387 transitions. [2021-11-19 13:32:34,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-19 13:32:34,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5387 transitions. [2021-11-19 13:32:34,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-19 13:32:34,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:34,964 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:35,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 13:32:35,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2021-11-19 13:32:35,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:32:35,388 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:32:35,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:35,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1474240355, now seen corresponding path program 1 times [2021-11-19 13:32:35,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:32:35,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055274042] [2021-11-19 13:32:35,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:35,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:32:35,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:32:35,395 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:32:35,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 13:32:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:42,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 4220 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:32:42,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:32:45,548 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 69 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-19 13:32:45,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:32:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-19 13:32:48,417 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:32:48,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055274042] [2021-11-19 13:32:48,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055274042] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:32:48,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [377017156] [2021-11-19 13:32:48,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:48,418 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:32:48,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:32:48,420 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:32:48,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-19 13:33:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:21,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 4220 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 13:33:21,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:24,405 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-19 13:33:24,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:26,390 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-19 13:33:26,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [377017156] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:26,390 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:33:26,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [15, 15] total 23 [2021-11-19 13:33:26,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306232459] [2021-11-19 13:33:26,391 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:26,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:33:26,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:26,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:33:26,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:33:26,394 INFO L87 Difference]: Start difference. First operand 3882 states and 5387 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-19 13:33:27,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:27,514 INFO L93 Difference]: Finished difference Result 3890 states and 5393 transitions. [2021-11-19 13:33:27,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:33:27,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 155 [2021-11-19 13:33:27,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:27,525 INFO L225 Difference]: With dead ends: 3890 [2021-11-19 13:33:27,525 INFO L226 Difference]: Without dead ends: 3888 [2021-11-19 13:33:27,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:33:27,527 INFO L933 BasicCegarLoop]: 5262 mSDtfsCounter, 4589 mSDsluCounter, 21639 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4592 SdHoareTripleChecker+Valid, 26901 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:27,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4592 Valid, 26901 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:33:27,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-11-19 13:33:27,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3886. [2021-11-19 13:33:27,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3886 states, 2520 states have (on average 1.2484126984126984) internal successors, (3146), 2616 states have internal predecessors, (3146), 1122 states have call successors, (1122), 242 states have call predecessors, (1122), 242 states have return successors, (1122), 1092 states have call predecessors, (1122), 1122 states have call successors, (1122) [2021-11-19 13:33:27,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3886 states to 3886 states and 5390 transitions. [2021-11-19 13:33:27,937 INFO L78 Accepts]: Start accepts. Automaton has 3886 states and 5390 transitions. Word has length 155 [2021-11-19 13:33:27,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:27,938 INFO L470 AbstractCegarLoop]: Abstraction has 3886 states and 5390 transitions. [2021-11-19 13:33:27,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-19 13:33:27,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3886 states and 5390 transitions. [2021-11-19 13:33:27,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-19 13:33:27,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:27,945 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:28,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:28,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2021-11-19 13:33:28,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:33:28,372 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 13:33:28,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:28,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1506475053, now seen corresponding path program 1 times [2021-11-19 13:33:28,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:28,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911493210] [2021-11-19 13:33:28,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:28,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:28,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:28,377 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:28,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 13:33:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:34,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 4377 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:33:34,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 69 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-19 13:33:38,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:41,117 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-19 13:33:41,117 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:41,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911493210] [2021-11-19 13:33:41,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911493210] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:33:41,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [119321127] [2021-11-19 13:33:41,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:41,118 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:33:41,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:33:41,123 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:33:41,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-19 13:34:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:13,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 4377 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 13:34:13,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-19 13:34:17,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-19 13:34:19,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [119321127] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:19,920 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:34:19,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [15, 15] total 23 [2021-11-19 13:34:19,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112956474] [2021-11-19 13:34:19,921 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:19,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:34:19,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:19,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:34:19,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:34:19,923 INFO L87 Difference]: Start difference. First operand 3886 states and 5390 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (59), 4 states have call predecessors, (59), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-19 13:34:20,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:20,875 INFO L93 Difference]: Finished difference Result 3894 states and 5396 transitions. [2021-11-19 13:34:20,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:34:20,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (59), 4 states have call predecessors, (59), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 204 [2021-11-19 13:34:20,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:20,892 INFO L225 Difference]: With dead ends: 3894 [2021-11-19 13:34:20,893 INFO L226 Difference]: Without dead ends: 3892 [2021-11-19 13:34:20,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:34:20,896 INFO L933 BasicCegarLoop]: 5244 mSDtfsCounter, 5044 mSDsluCounter, 15769 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5047 SdHoareTripleChecker+Valid, 21013 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:20,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5047 Valid, 21013 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:34:20,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2021-11-19 13:34:21,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 3890. [2021-11-19 13:34:21,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3890 states, 2523 states have (on average 1.2477209671026557) internal successors, (3148), 2619 states have internal predecessors, (3148), 1122 states have call successors, (1122), 243 states have call predecessors, (1122), 243 states have return successors, (1122), 1092 states have call predecessors, (1122), 1122 states have call successors, (1122) [2021-11-19 13:34:21,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3890 states to 3890 states and 5392 transitions. [2021-11-19 13:34:21,378 INFO L78 Accepts]: Start accepts. Automaton has 3890 states and 5392 transitions. Word has length 204 [2021-11-19 13:34:21,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:21,379 INFO L470 AbstractCegarLoop]: Abstraction has 3890 states and 5392 transitions. [2021-11-19 13:34:21,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (59), 4 states have call predecessors, (59), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-19 13:34:21,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3890 states and 5392 transitions. [2021-11-19 13:34:21,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-19 13:34:21,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:21,389 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:21,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2021-11-19 13:34:21,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:21,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:21,816 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:34:21,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:21,816 INFO L85 PathProgramCache]: Analyzing trace with hash -610629608, now seen corresponding path program 1 times [2021-11-19 13:34:21,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:21,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53727450] [2021-11-19 13:34:21,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:21,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:21,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:21,821 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:21,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 13:34:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:28,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 4461 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:34:28,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:32,530 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-19 13:34:32,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-19 13:34:35,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:35,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53727450] [2021-11-19 13:34:35,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53727450] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:34:35,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1814010704] [2021-11-19 13:34:35,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:35,364 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:34:35,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:34:35,367 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:34:35,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-19 13:34:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:37,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 4461 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 13:34:37,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-19 13:34:40,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:44,061 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-11-19 13:34:44,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1814010704] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:44,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:34:44,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15, 15, 9] total 28 [2021-11-19 13:34:44,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86493938] [2021-11-19 13:34:44,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:44,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:34:44,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:44,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:34:44,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2021-11-19 13:34:44,063 INFO L87 Difference]: Start difference. First operand 3890 states and 5392 transitions. Second operand has 8 states, 7 states have (on average 18.142857142857142) internal successors, (127), 6 states have internal predecessors, (127), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-19 13:34:47,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:47,592 INFO L93 Difference]: Finished difference Result 7713 states and 10724 transitions. [2021-11-19 13:34:47,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:34:47,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 18.142857142857142) internal successors, (127), 6 states have internal predecessors, (127), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) Word has length 242 [2021-11-19 13:34:47,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:47,607 INFO L225 Difference]: With dead ends: 7713 [2021-11-19 13:34:47,607 INFO L226 Difference]: Without dead ends: 3906 [2021-11-19 13:34:47,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 937 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=91, Invalid=901, Unknown=0, NotChecked=0, Total=992 [2021-11-19 13:34:47,634 INFO L933 BasicCegarLoop]: 5200 mSDtfsCounter, 11 mSDsluCounter, 31156 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 36356 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:47,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 36356 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 13:34:47,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3906 states. [2021-11-19 13:34:48,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3906 to 3896. [2021-11-19 13:34:48,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3896 states, 2527 states have (on average 1.2473288484368816) internal successors, (3152), 2621 states have internal predecessors, (3152), 1124 states have call successors, (1124), 243 states have call predecessors, (1124), 243 states have return successors, (1124), 1094 states have call predecessors, (1124), 1124 states have call successors, (1124) [2021-11-19 13:34:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 5400 transitions. [2021-11-19 13:34:48,097 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 5400 transitions. Word has length 242 [2021-11-19 13:34:48,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:48,098 INFO L470 AbstractCegarLoop]: Abstraction has 3896 states and 5400 transitions. [2021-11-19 13:34:48,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 18.142857142857142) internal successors, (127), 6 states have internal predecessors, (127), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-19 13:34:48,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 5400 transitions. [2021-11-19 13:34:48,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-19 13:34:48,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:48,112 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:48,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-11-19 13:34:48,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:48,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:34:48,536 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:34:48,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:48,537 INFO L85 PathProgramCache]: Analyzing trace with hash -201724075, now seen corresponding path program 1 times [2021-11-19 13:34:48,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:48,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524731676] [2021-11-19 13:34:48,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:48,544 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:48,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:48,545 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:48,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-19 13:34:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:55,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 4471 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:34:55,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-19 13:34:59,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:01,990 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-19 13:35:01,990 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:35:01,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524731676] [2021-11-19 13:35:01,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524731676] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:01,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1425341346] [2021-11-19 13:35:01,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:01,991 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:35:01,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:35:02,008 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:35:02,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-19 13:35:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:34,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 4471 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:35:34,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:35,755 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-19 13:35:35,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-19 13:35:36,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1425341346] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:36,900 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:35:36,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [15, 15] total 23 [2021-11-19 13:35:36,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882551658] [2021-11-19 13:35:36,900 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:36,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:35:36,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:35:36,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:35:36,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:35:36,902 INFO L87 Difference]: Start difference. First operand 3896 states and 5400 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 5 states have internal predecessors, (144), 2 states have call successors, (46), 4 states have call predecessors, (46), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 13:35:38,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:35:38,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:38,921 INFO L93 Difference]: Finished difference Result 3898 states and 5401 transitions. [2021-11-19 13:35:38,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:35:38,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 5 states have internal predecessors, (144), 2 states have call successors, (46), 4 states have call predecessors, (46), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 246 [2021-11-19 13:35:38,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:38,939 INFO L225 Difference]: With dead ends: 3898 [2021-11-19 13:35:38,939 INFO L226 Difference]: Without dead ends: 3896 [2021-11-19 13:35:38,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 959 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-11-19 13:35:38,943 INFO L933 BasicCegarLoop]: 5230 mSDtfsCounter, 25 mSDsluCounter, 26112 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 31342 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:38,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 31342 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 13:35:38,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-11-19 13:35:39,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3896. [2021-11-19 13:35:39,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3896 states, 2527 states have (on average 1.2465373961218837) internal successors, (3150), 2621 states have internal predecessors, (3150), 1124 states have call successors, (1124), 243 states have call predecessors, (1124), 243 states have return successors, (1124), 1094 states have call predecessors, (1124), 1124 states have call successors, (1124) [2021-11-19 13:35:39,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 5398 transitions. [2021-11-19 13:35:39,440 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 5398 transitions. Word has length 246 [2021-11-19 13:35:39,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:39,441 INFO L470 AbstractCegarLoop]: Abstraction has 3896 states and 5398 transitions. [2021-11-19 13:35:39,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 5 states have internal predecessors, (144), 2 states have call successors, (46), 4 states have call predecessors, (46), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 13:35:39,442 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 5398 transitions. [2021-11-19 13:35:39,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2021-11-19 13:35:39,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:39,458 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 12, 12, 12, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:39,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:39,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:39,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:35:39,884 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:35:39,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:39,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1543755929, now seen corresponding path program 1 times [2021-11-19 13:35:39,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:35:39,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601527005] [2021-11-19 13:35:39,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:39,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:35:39,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:35:39,890 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:35:39,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-19 13:35:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:47,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 5650 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:35:47,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:55,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 170 proven. 3 refuted. 0 times theorem prover too weak. 1675 trivial. 0 not checked. [2021-11-19 13:35:55,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:00,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 3 proven. 61 refuted. 0 times theorem prover too weak. 1784 trivial. 0 not checked. [2021-11-19 13:36:00,368 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:36:00,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601527005] [2021-11-19 13:36:00,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601527005] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:36:00,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [362905879] [2021-11-19 13:36:00,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:00,368 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:36:00,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:36:00,369 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:36:00,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-19 13:36:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:03,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 5650 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:36:03,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 660 proven. 0 refuted. 0 times theorem prover too weak. 1188 trivial. 0 not checked. [2021-11-19 13:36:05,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:07,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1848 trivial. 0 not checked. [2021-11-19 13:36:07,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [362905879] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:36:07,756 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:36:07,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [15, 15] total 19 [2021-11-19 13:36:07,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701406722] [2021-11-19 13:36:07,757 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:36:07,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:36:07,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:36:07,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:36:07,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:36:07,759 INFO L87 Difference]: Start difference. First operand 3896 states and 5398 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2021-11-19 13:36:08,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:36:08,162 INFO L93 Difference]: Finished difference Result 7710 states and 10729 transitions. [2021-11-19 13:36:08,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:36:08,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) Word has length 614 [2021-11-19 13:36:08,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:36:08,184 INFO L225 Difference]: With dead ends: 7710 [2021-11-19 13:36:08,184 INFO L226 Difference]: Without dead ends: 3897 [2021-11-19 13:36:08,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2452 GetRequests, 2435 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:36:08,211 INFO L933 BasicCegarLoop]: 5219 mSDtfsCounter, 0 mSDsluCounter, 5215 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10434 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:36:08,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10434 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:36:08,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2021-11-19 13:36:08,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3897. [2021-11-19 13:36:08,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3897 states, 2528 states have (on average 1.2464398734177216) internal successors, (3151), 2622 states have internal predecessors, (3151), 1124 states have call successors, (1124), 243 states have call predecessors, (1124), 243 states have return successors, (1124), 1094 states have call predecessors, (1124), 1124 states have call successors, (1124) [2021-11-19 13:36:08,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 5399 transitions. [2021-11-19 13:36:08,873 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 5399 transitions. Word has length 614 [2021-11-19 13:36:08,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:36:08,875 INFO L470 AbstractCegarLoop]: Abstraction has 3897 states and 5399 transitions. [2021-11-19 13:36:08,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2021-11-19 13:36:08,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 5399 transitions. [2021-11-19 13:36:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2021-11-19 13:36:08,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:36:08,896 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:36:09,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-19 13:36:09,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-19 13:36:09,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:36:09,312 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:36:09,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:36:09,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1639913259, now seen corresponding path program 1 times [2021-11-19 13:36:09,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:36:09,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972406151] [2021-11-19 13:36:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:09,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:36:09,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:36:09,322 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:36:09,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-19 13:36:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:18,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 5539 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:36:18,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 1507 trivial. 0 not checked. [2021-11-19 13:36:25,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:29,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 1555 trivial. 0 not checked. [2021-11-19 13:36:29,699 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:36:29,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972406151] [2021-11-19 13:36:29,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972406151] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:36:29,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1631229679] [2021-11-19 13:36:29,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:29,700 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:36:29,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:36:29,701 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:36:29,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-19 13:36:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:33,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 5539 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:36:33,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:40,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2021-11-19 13:36:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 933 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2021-11-19 13:36:42,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:46,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1591 trivial. 0 not checked. [2021-11-19 13:36:46,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1631229679] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:36:46,142 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:36:46,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [15, 15] total 25 [2021-11-19 13:36:46,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126876024] [2021-11-19 13:36:46,144 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:36:46,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:36:46,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:36:46,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:36:46,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=543, Unknown=0, NotChecked=0, Total=600 [2021-11-19 13:36:46,146 INFO L87 Difference]: Start difference. First operand 3897 states and 5399 transitions. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 5 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (75), 5 states have call predecessors, (75), 5 states have call successors, (75) [2021-11-19 13:36:47,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:36:52,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:36:54,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:36:56,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:36:58,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:11,468 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:15,547 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:20,453 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:22,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:23,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:29,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:31,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:33,556 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:37,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:39,581 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:41,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:45,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:47,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:49,236 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:50,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:52,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:55,900 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:58,457 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:00,771 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:02,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:05,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:07,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:09,251 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:15,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:29,500 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:32,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:34,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:36,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:40,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:42,664 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:44,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:51,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:53,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:55,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:57,949 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:59,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:39:01,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:39:05,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:05,862 INFO L93 Difference]: Finished difference Result 7937 states and 11077 transitions. [2021-11-19 13:39:05,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:39:05,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 5 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (75), 5 states have call predecessors, (75), 5 states have call successors, (75) Word has length 538 [2021-11-19 13:39:05,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:05,887 INFO L225 Difference]: With dead ends: 7937 [2021-11-19 13:39:05,887 INFO L226 Difference]: Without dead ends: 4123 [2021-11-19 13:39:05,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2150 GetRequests, 2118 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-11-19 13:39:05,910 INFO L933 BasicCegarLoop]: 5303 mSDtfsCounter, 318 mSDsluCounter, 24041 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 32 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 133.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 29344 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 676 IncrementalHoareTripleChecker+Unchecked, 138.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:05,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 29344 Invalid, 2681 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 1946 Invalid, 27 Unknown, 676 Unchecked, 138.5s Time] [2021-11-19 13:39:05,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4123 states. [2021-11-19 13:39:06,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4123 to 3997. [2021-11-19 13:39:06,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3997 states, 2600 states have (on average 1.2496153846153846) internal successors, (3249), 2699 states have internal predecessors, (3249), 1145 states have call successors, (1145), 250 states have call predecessors, (1145), 250 states have return successors, (1145), 1112 states have call predecessors, (1145), 1145 states have call successors, (1145) [2021-11-19 13:39:06,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 5539 transitions. [2021-11-19 13:39:06,575 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 5539 transitions. Word has length 538 [2021-11-19 13:39:06,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:06,576 INFO L470 AbstractCegarLoop]: Abstraction has 3997 states and 5539 transitions. [2021-11-19 13:39:06,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 5 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (75), 5 states have call predecessors, (75), 5 states have call successors, (75) [2021-11-19 13:39:06,577 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 5539 transitions. [2021-11-19 13:39:06,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2021-11-19 13:39:06,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:06,599 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:39:06,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:07,012 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Forcibly destroying the process [2021-11-19 13:39:07,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:07,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:07,035 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:39:07,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:07,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1067806088, now seen corresponding path program 1 times [2021-11-19 13:39:07,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:07,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408287117] [2021-11-19 13:39:07,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:07,045 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:07,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:07,046 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:07,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-19 13:39:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:16,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 5648 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-19 13:39:16,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2021-11-19 13:39:29,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:39,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2021-11-19 13:39:39,386 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:39,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408287117] [2021-11-19 13:39:39,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408287117] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:39:39,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:39:39,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [10] total 22 [2021-11-19 13:39:39,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132022901] [2021-11-19 13:39:39,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:39,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 13:39:39,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:39,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 13:39:39,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-11-19 13:39:39,390 INFO L87 Difference]: Start difference. First operand 3997 states and 5539 transitions. Second operand has 15 states, 13 states have (on average 15.076923076923077) internal successors, (196), 11 states have internal predecessors, (196), 4 states have call successors, (68), 2 states have call predecessors, (68), 6 states have return successors, (63), 7 states have call predecessors, (63), 4 states have call successors, (63) [2021-11-19 13:39:54,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:54,378 INFO L93 Difference]: Finished difference Result 8772 states and 12234 transitions. [2021-11-19 13:39:54,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 13:39:54,380 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 15.076923076923077) internal successors, (196), 11 states have internal predecessors, (196), 4 states have call successors, (68), 2 states have call predecessors, (68), 6 states have return successors, (63), 7 states have call predecessors, (63), 4 states have call successors, (63) Word has length 565 [2021-11-19 13:39:54,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:54,408 INFO L225 Difference]: With dead ends: 8772 [2021-11-19 13:39:54,408 INFO L226 Difference]: Without dead ends: 4854 [2021-11-19 13:39:54,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1133 GetRequests, 1108 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2021-11-19 13:39:54,429 INFO L933 BasicCegarLoop]: 5867 mSDtfsCounter, 1064 mSDsluCounter, 63198 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 69065 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:54,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 69065 Invalid, 1086 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [252 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2021-11-19 13:39:54,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4854 states. [2021-11-19 13:39:54,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4854 to 3997. [2021-11-19 13:39:54,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3997 states, 2600 states have (on average 1.2492307692307691) internal successors, (3248), 2698 states have internal predecessors, (3248), 1145 states have call successors, (1145), 250 states have call predecessors, (1145), 250 states have return successors, (1145), 1112 states have call predecessors, (1145), 1145 states have call successors, (1145) [2021-11-19 13:39:54,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 5538 transitions. [2021-11-19 13:39:54,972 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 5538 transitions. Word has length 565 [2021-11-19 13:39:54,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:54,973 INFO L470 AbstractCegarLoop]: Abstraction has 3997 states and 5538 transitions. [2021-11-19 13:39:54,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 15.076923076923077) internal successors, (196), 11 states have internal predecessors, (196), 4 states have call successors, (68), 2 states have call predecessors, (68), 6 states have return successors, (63), 7 states have call predecessors, (63), 4 states have call successors, (63) [2021-11-19 13:39:54,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 5538 transitions. [2021-11-19 13:39:54,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2021-11-19 13:39:54,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:54,989 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 12, 12, 12, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:55,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:55,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:55,190 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:39:55,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:55,190 INFO L85 PathProgramCache]: Analyzing trace with hash -931013483, now seen corresponding path program 1 times [2021-11-19 13:39:55,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:55,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41737622] [2021-11-19 13:39:55,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:55,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:55,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:55,200 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:55,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ffa6588-410b-4909-8fff-a83ba1f62b54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-19 13:40:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:04,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 5650 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:40:04,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 170 proven. 3 refuted. 0 times theorem prover too weak. 1675 trivial. 0 not checked. [2021-11-19 13:40:15,699 INFO L328 TraceCheckSpWp]: Computing backward predicates...