./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.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_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/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_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/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_31f202cc-ca65-4661-8d79-e2b13052ffe4/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 9fae230e52bc983f4c0251cc946bfbc52943e9b9d698b0f694e42af65a9c74e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:41:11,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:41:11,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:41:11,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:41:11,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:41:11,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:41:11,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:41:11,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:41:11,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:41:11,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:41:11,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:41:11,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:41:11,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:41:11,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:41:11,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:41:11,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:41:11,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:41:11,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:41:11,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:41:11,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:41:11,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:41:11,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:41:11,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:41:11,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:41:11,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:41:11,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:41:11,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:41:11,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:41:11,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:41:11,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:41:11,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:41:11,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:41:11,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:41:11,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:41:11,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:41:11,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:41:11,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:41:11,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:41:11,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:41:11,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:41:11,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:41:11,928 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:41:11,971 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:41:11,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:41:11,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:41:11,974 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:41:11,974 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:41:11,975 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:41:11,975 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:41:11,975 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:41:11,982 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:41:11,982 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:41:11,983 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:41:11,984 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:41:11,984 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:41:11,985 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:41:11,985 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:41:11,985 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:41:11,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:41:11,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:41:11,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:41:11,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:41:11,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:41:11,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:41:11,988 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:41:11,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:41:11,989 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:41:11,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:41:11,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:41:11,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:41:11,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:41:11,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:41:11,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:41:11,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:41:11,992 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:41:11,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:41:11,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:41:11,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:41:11,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:41:11,993 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fae230e52bc983f4c0251cc946bfbc52943e9b9d698b0f694e42af65a9c74e9 [2021-11-19 13:41:12,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:41:12,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:41:12,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:41:12,341 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:41:12,342 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:41:12,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-19 13:41:12,412 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/data/0b34d264c/db1ff119a978472c848da3cd744c9dc1/FLAGe8825c612 [2021-11-19 13:41:13,406 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:41:13,407 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-19 13:41:13,478 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/data/0b34d264c/db1ff119a978472c848da3cd744c9dc1/FLAGe8825c612 [2021-11-19 13:41:13,776 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/data/0b34d264c/db1ff119a978472c848da3cd744c9dc1 [2021-11-19 13:41:13,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:41:13,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:41:13,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:41:13,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:41:13,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:41:13,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:41:13" (1/1) ... [2021-11-19 13:41:13,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f38e115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:13, skipping insertion in model container [2021-11-19 13:41:13,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:41:13" (1/1) ... [2021-11-19 13:41:13,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:41:14,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:41:15,725 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 13:41:15,731 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 13:41:16,026 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 13:41:16,722 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292221,292234] [2021-11-19 13:41:16,727 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292387,292400] [2021-11-19 13:41:16,727 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292551,292564] [2021-11-19 13:41:16,728 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292716,292729] [2021-11-19 13:41:16,764 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:41:16,815 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 13:41:16,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78260f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:16, skipping insertion in model container [2021-11-19 13:41:16,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:41:16,816 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:41:16,818 INFO L158 Benchmark]: Toolchain (without parser) took 3035.51ms. Allocated memory was 111.1MB in the beginning and 151.0MB in the end (delta: 39.8MB). Free memory was 65.9MB in the beginning and 77.5MB in the end (delta: -11.6MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2021-11-19 13:41:16,819 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 66.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:41:16,820 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3030.21ms. Allocated memory was 111.1MB in the beginning and 151.0MB in the end (delta: 39.8MB). Free memory was 65.9MB in the beginning and 77.5MB in the end (delta: -11.6MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2021-11-19 13:41:16,822 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 66.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3030.21ms. Allocated memory was 111.1MB in the beginning and 151.0MB in the end (delta: 39.8MB). Free memory was 65.9MB in the beginning and 77.5MB in the end (delta: -11.6MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6045]: 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/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_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/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_31f202cc-ca65-4661-8d79-e2b13052ffe4/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 9fae230e52bc983f4c0251cc946bfbc52943e9b9d698b0f694e42af65a9c74e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:41:19,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:41:19,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:41:19,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:41:19,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:41:19,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:41:19,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:41:19,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:41:19,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:41:19,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:41:19,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:41:19,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:41:19,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:41:19,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:41:19,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:41:19,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:41:19,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:41:19,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:41:19,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:41:19,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:41:19,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:41:19,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:41:19,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:41:19,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:41:19,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:41:19,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:41:19,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:41:19,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:41:19,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:41:19,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:41:19,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:41:19,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:41:19,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:41:19,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:41:19,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:41:19,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:41:19,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:41:19,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:41:19,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:41:19,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:41:19,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:41:19,131 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:41:19,176 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:41:19,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:41:19,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:41:19,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:41:19,179 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:41:19,179 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:41:19,179 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:41:19,180 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:41:19,180 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:41:19,180 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:41:19,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:41:19,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:41:19,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:41:19,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:41:19,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:41:19,184 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:41:19,185 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:41:19,185 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:41:19,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:41:19,186 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:41:19,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:41:19,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:41:19,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:41:19,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:41:19,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:41:19,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:41:19,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:41:19,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:41:19,188 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:41:19,188 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:41:19,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:41:19,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:41:19,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:41:19,190 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fae230e52bc983f4c0251cc946bfbc52943e9b9d698b0f694e42af65a9c74e9 [2021-11-19 13:41:19,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:41:19,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:41:19,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:41:19,610 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:41:19,611 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:41:19,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-19 13:41:19,692 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/data/5b54841b2/c5ee2225ab3d4bd7a5a532b056e908ac/FLAGa591d0e5b [2021-11-19 13:41:20,724 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:41:20,725 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-19 13:41:20,791 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/data/5b54841b2/c5ee2225ab3d4bd7a5a532b056e908ac/FLAGa591d0e5b [2021-11-19 13:41:21,094 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/data/5b54841b2/c5ee2225ab3d4bd7a5a532b056e908ac [2021-11-19 13:41:21,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:41:21,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:41:21,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:41:21,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:41:21,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:41:21,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:41:21" (1/1) ... [2021-11-19 13:41:21,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b3e0fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:21, skipping insertion in model container [2021-11-19 13:41:21,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:41:21" (1/1) ... [2021-11-19 13:41:21,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:41:21,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:41:23,765 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292221,292234] [2021-11-19 13:41:23,767 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292387,292400] [2021-11-19 13:41:23,768 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292551,292564] [2021-11-19 13:41:23,768 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292716,292729] [2021-11-19 13:41:23,804 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:41:23,882 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:41:23,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:41:24,325 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292221,292234] [2021-11-19 13:41:24,326 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292387,292400] [2021-11-19 13:41:24,327 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292551,292564] [2021-11-19 13:41:24,327 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292716,292729] [2021-11-19 13:41:24,334 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:41:24,369 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:41:24,740 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292221,292234] [2021-11-19 13:41:24,741 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292387,292400] [2021-11-19 13:41:24,741 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292551,292564] [2021-11-19 13:41:24,742 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_31f202cc-ca65-4661-8d79-e2b13052ffe4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292716,292729] [2021-11-19 13:41:24,756 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:41:24,964 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:41:24,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:24 WrapperNode [2021-11-19 13:41:24,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:41:24,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:41:24,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:41:24,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:41:24,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:24" (1/1) ... [2021-11-19 13:41:25,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:24" (1/1) ... [2021-11-19 13:41:25,225 INFO L137 Inliner]: procedures = 372, calls = 1559, calls flagged for inlining = 197, calls inlined = 186, statements flattened = 3947 [2021-11-19 13:41:25,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:41:25,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:41:25,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:41:25,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:41:25,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:24" (1/1) ... [2021-11-19 13:41:25,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:24" (1/1) ... [2021-11-19 13:41:25,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:24" (1/1) ... [2021-11-19 13:41:25,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:24" (1/1) ... [2021-11-19 13:41:25,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:24" (1/1) ... [2021-11-19 13:41:25,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:24" (1/1) ... [2021-11-19 13:41:25,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:24" (1/1) ... [2021-11-19 13:41:25,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:41:25,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:41:25,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:41:25,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:41:25,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:24" (1/1) ... [2021-11-19 13:41:25,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:41:25,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:41:25,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:41:25,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:41:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_txfree [2021-11-19 13:41:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_txfree [2021-11-19 13:41:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:41:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:41:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-19 13:41:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-19 13:41:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:41:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 13:41:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 13:41:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 13:41:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 13:41:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 13:41:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-19 13:41:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-19 13:41:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_timeout [2021-11-19 13:41:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_timeout [2021-11-19 13:41:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 13:41:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 13:41:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 13:41:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 13:41:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 13:41:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 13:41:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mii_mutex_of_ipg_nic_private [2021-11-19 13:41:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mii_mutex_of_ipg_nic_private [2021-11-19 13:41:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-19 13:41:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-19 13:41:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-19 13:41:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-19 13:41:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure init_tfdlist [2021-11-19 13:41:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tfdlist [2021-11-19 13:41:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-19 13:41:25,659 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-19 13:41:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 13:41:25,659 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 13:41:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-19 13:41:25,660 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-19 13:41:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_set_multicast_list [2021-11-19 13:41:25,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_set_multicast_list [2021-11-19 13:41:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-19 13:41:25,660 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-19 13:41:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-19 13:41:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-19 13:41:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 13:41:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 13:41:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-19 13:41:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-19 13:41:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-19 13:41:25,662 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-19 13:41:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_clear [2021-11-19 13:41:25,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_clear [2021-11-19 13:41:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_rx_clear [2021-11-19 13:41:25,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_rx_clear [2021-11-19 13:41:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 13:41:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 13:41:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2021-11-19 13:41:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2021-11-19 13:41:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:41:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-19 13:41:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-19 13:41:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2021-11-19 13:41:25,664 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2021-11-19 13:41:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:41:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 13:41:25,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 13:41:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-19 13:41:25,665 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-19 13:41:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-19 13:41:25,665 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-19 13:41:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-19 13:41:25,665 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-19 13:41:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 13:41:25,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 13:41:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-19 13:41:25,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-19 13:41:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_free_skb [2021-11-19 13:41:25,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_free_skb [2021-11-19 13:41:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-19 13:41:25,667 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-19 13:41:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:41:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure send_three_state [2021-11-19 13:41:25,667 INFO L138 BoogieDeclarations]: Found implementation of procedure send_three_state [2021-11-19 13:41:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 13:41:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 13:41:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:41:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:41:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:41:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 13:41:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:41:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:41:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 13:41:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure read_phy_bit [2021-11-19 13:41:25,669 INFO L138 BoogieDeclarations]: Found implementation of procedure read_phy_bit [2021-11-19 13:41:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 13:41:25,669 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 13:41:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_remove [2021-11-19 13:41:25,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_remove [2021-11-19 13:41:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 13:41:25,670 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 13:41:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 13:41:25,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 13:41:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-19 13:41:25,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-19 13:41:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-19 13:41:25,671 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-19 13:41:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 13:41:25,671 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 13:41:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_io_config [2021-11-19 13:41:25,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_io_config [2021-11-19 13:41:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure init_rfdlist [2021-11-19 13:41:25,672 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rfdlist [2021-11-19 13:41:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_open [2021-11-19 13:41:25,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_open [2021-11-19 13:41:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 13:41:25,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 13:41:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-19 13:41:25,673 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-19 13:41:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-19 13:41:25,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-19 13:41:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 13:41:25,674 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 13:41:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 13:41:25,674 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 13:41:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 13:41:25,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 13:41:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 13:41:25,674 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 13:41:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-19 13:41:25,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-19 13:41:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 13:41:25,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 13:41:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 13:41:25,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 13:41:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 13:41:25,676 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 13:41:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 13:41:25,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 13:41:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-19 13:41:25,676 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-19 13:41:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-19 13:41:25,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-19 13:41:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-19 13:41:25,677 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-19 13:41:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-19 13:41:25,677 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-19 13:41:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 13:41:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 13:41:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 13:41:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 13:41:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-19 13:41:25,678 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-19 13:41:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 13:41:25,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 13:41:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_get_stats [2021-11-19 13:41:25,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_get_stats [2021-11-19 13:41:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nway_reset [2021-11-19 13:41:25,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nway_reset [2021-11-19 13:41:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mii_mutex_of_ipg_nic_private [2021-11-19 13:41:25,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mii_mutex_of_ipg_nic_private [2021-11-19 13:41:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rxrestore [2021-11-19 13:41:25,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rxrestore [2021-11-19 13:41:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:41:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_stop [2021-11-19 13:41:25,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_stop [2021-11-19 13:41:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 13:41:25,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 13:41:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 13:41:25,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 13:41:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_config_autoneg [2021-11-19 13:41:25,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_config_autoneg [2021-11-19 13:41:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:41:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 13:41:25,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 13:41:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 13:41:25,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 13:41:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:41:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 13:41:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ipg_pci_driver_exit_13_2 [2021-11-19 13:41:25,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ipg_pci_driver_exit_13_2 [2021-11-19 13:41:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 13:41:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-19 13:41:25,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-19 13:41:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 13:41:25,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 13:41:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 13:41:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioaddr [2021-11-19 13:41:25,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioaddr [2021-11-19 13:41:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-19 13:41:25,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-19 13:41:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 13:41:25,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 13:41:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset [2021-11-19 13:41:25,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset [2021-11-19 13:41:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-19 13:41:25,685 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-19 13:41:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 13:41:25,685 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 13:41:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-19 13:41:25,686 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-19 13:41:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-19 13:41:25,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-19 13:41:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_get_rxbuff [2021-11-19 13:41:25,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_get_rxbuff [2021-11-19 13:41:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_write_phy_ctl [2021-11-19 13:41:25,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_write_phy_ctl [2021-11-19 13:41:25,687 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-19 13:41:25,687 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-19 13:41:25,687 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-19 13:41:25,687 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-19 13:41:25,687 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-19 13:41:25,687 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-19 13:41:25,687 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-19 13:41:25,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 13:41:25,688 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_check_error [2021-11-19 13:41:25,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_check_error [2021-11-19 13:41:25,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 13:41:25,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 13:41:25,688 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_drive_phy_ctl_low_high [2021-11-19 13:41:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_drive_phy_ctl_low_high [2021-11-19 13:41:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-19 13:41:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-19 13:41:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:41:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:41:26,528 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:41:26,536 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:41:32,501 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 13:42:07,784 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 13:42:07,830 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:42:07,867 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:42:07,867 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 13:42:07,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:42:07 BoogieIcfgContainer [2021-11-19 13:42:07,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:42:07,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:42:07,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:42:07,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:42:07,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:41:21" (1/3) ... [2021-11-19 13:42:07,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7446464f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:42:07, skipping insertion in model container [2021-11-19 13:42:07,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:24" (2/3) ... [2021-11-19 13:42:07,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7446464f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:42:07, skipping insertion in model container [2021-11-19 13:42:07,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:42:07" (3/3) ... [2021-11-19 13:42:07,881 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-19 13:42:07,886 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:42:07,887 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 13:42:07,960 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:42:07,972 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 13:42:07,973 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 13:42:08,037 INFO L276 IsEmpty]: Start isEmpty. Operand has 1656 states, 1118 states have (on average 1.2531305903398926) internal successors, (1401), 1153 states have internal predecessors, (1401), 443 states have call successors, (443), 95 states have call predecessors, (443), 94 states have return successors, (437), 434 states have call predecessors, (437), 437 states have call successors, (437) [2021-11-19 13:42:08,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 13:42:08,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:08,057 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:42:08,058 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:42:08,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:08,064 INFO L85 PathProgramCache]: Analyzing trace with hash 979223461, now seen corresponding path program 1 times [2021-11-19 13:42:08,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:42:08,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451834044] [2021-11-19 13:42:08,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:08,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:42:08,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:42:08,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:42:08,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:42:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:09,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:42:09,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:42:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-11-19 13:42:09,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-19 13:42:10,426 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:42:10,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451834044] [2021-11-19 13:42:10,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451834044] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:10,430 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:10,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:42:10,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243208372] [2021-11-19 13:42:10,434 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:10,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:42:10,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:42:10,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:42:10,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:42:10,483 INFO L87 Difference]: Start difference. First operand has 1656 states, 1118 states have (on average 1.2531305903398926) internal successors, (1401), 1153 states have internal predecessors, (1401), 443 states have call successors, (443), 95 states have call predecessors, (443), 94 states have return successors, (437), 434 states have call predecessors, (437), 437 states have call successors, (437) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:42:12,652 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:42:20,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:20,171 INFO L93 Difference]: Finished difference Result 6393 states and 9018 transitions. [2021-11-19 13:42:20,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:42:20,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2021-11-19 13:42:20,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:20,242 INFO L225 Difference]: With dead ends: 6393 [2021-11-19 13:42:20,242 INFO L226 Difference]: Without dead ends: 4741 [2021-11-19 13:42:20,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:42:20,264 INFO L933 BasicCegarLoop]: 3076 mSDtfsCounter, 4324 mSDsluCounter, 3963 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4324 SdHoareTripleChecker+Valid, 7039 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:20,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4324 Valid, 7039 Invalid, 900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 880 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2021-11-19 13:42:20,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4741 states. [2021-11-19 13:42:20,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4741 to 4723. [2021-11-19 13:42:20,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4723 states, 3204 states have (on average 1.2484394506866416) internal successors, (4000), 3302 states have internal predecessors, (4000), 1241 states have call successors, (1241), 276 states have call predecessors, (1241), 275 states have return successors, (1237), 1228 states have call predecessors, (1237), 1237 states have call successors, (1237) [2021-11-19 13:42:20,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4723 states to 4723 states and 6478 transitions. [2021-11-19 13:42:20,746 INFO L78 Accepts]: Start accepts. Automaton has 4723 states and 6478 transitions. Word has length 116 [2021-11-19 13:42:20,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:20,749 INFO L470 AbstractCegarLoop]: Abstraction has 4723 states and 6478 transitions. [2021-11-19 13:42:20,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:42:20,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4723 states and 6478 transitions. [2021-11-19 13:42:20,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 13:42:20,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:20,762 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:42:20,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:42:20,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:42:20,980 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:42:20,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:20,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1385221388, now seen corresponding path program 1 times [2021-11-19 13:42:20,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:42:20,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133119374] [2021-11-19 13:42:20,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:20,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:42:20,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:42:20,991 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:42:21,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:42:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:22,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:42:22,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:42:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-11-19 13:42:22,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:23,004 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-19 13:42:23,005 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:42:23,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133119374] [2021-11-19 13:42:23,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133119374] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:23,005 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:23,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:42:23,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632543035] [2021-11-19 13:42:23,006 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:23,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:42:23,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:42:23,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:42:23,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:42:23,009 INFO L87 Difference]: Start difference. First operand 4723 states and 6478 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:42:25,150 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:42:33,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:33,587 INFO L93 Difference]: Finished difference Result 17917 states and 24559 transitions. [2021-11-19 13:42:33,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:42:33,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2021-11-19 13:42:33,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:33,715 INFO L225 Difference]: With dead ends: 17917 [2021-11-19 13:42:33,716 INFO L226 Difference]: Without dead ends: 13215 [2021-11-19 13:42:33,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:42:33,748 INFO L933 BasicCegarLoop]: 3014 mSDtfsCounter, 4190 mSDsluCounter, 4012 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4190 SdHoareTripleChecker+Valid, 7026 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:33,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4190 Valid, 7026 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 925 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2021-11-19 13:42:33,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13215 states. [2021-11-19 13:42:34,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13215 to 13169. [2021-11-19 13:42:34,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13169 states, 8854 states have (on average 1.2471199457872149) internal successors, (11042), 9138 states have internal predecessors, (11042), 3501 states have call successors, (3501), 818 states have call predecessors, (3501), 811 states have return successors, (3503), 3446 states have call predecessors, (3503), 3497 states have call successors, (3503) [2021-11-19 13:42:34,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13169 states to 13169 states and 18046 transitions. [2021-11-19 13:42:34,628 INFO L78 Accepts]: Start accepts. Automaton has 13169 states and 18046 transitions. Word has length 117 [2021-11-19 13:42:34,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:34,629 INFO L470 AbstractCegarLoop]: Abstraction has 13169 states and 18046 transitions. [2021-11-19 13:42:34,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:42:34,630 INFO L276 IsEmpty]: Start isEmpty. Operand 13169 states and 18046 transitions. [2021-11-19 13:42:34,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-19 13:42:34,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:34,639 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:42:34,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:42:34,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:42:34,856 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:42:34,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:34,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1129808871, now seen corresponding path program 1 times [2021-11-19 13:42:34,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:42:34,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453880119] [2021-11-19 13:42:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:34,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:42:34,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:42:34,858 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:42:34,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:42:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:35,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:42:35,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:42:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-11-19 13:42:36,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:36,944 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-19 13:42:36,945 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:42:36,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453880119] [2021-11-19 13:42:36,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453880119] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:36,948 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:36,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:42:36,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885035260] [2021-11-19 13:42:36,949 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:36,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:42:36,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:42:36,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:42:36,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:42:36,951 INFO L87 Difference]: Start difference. First operand 13169 states and 18046 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:42:39,046 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 13:42:47,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:47,727 INFO L93 Difference]: Finished difference Result 34312 states and 47086 transitions. [2021-11-19 13:42:47,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:42:47,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 128 [2021-11-19 13:42:47,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:47,964 INFO L225 Difference]: With dead ends: 34312 [2021-11-19 13:42:47,964 INFO L226 Difference]: Without dead ends: 21164 [2021-11-19 13:42:48,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:42:48,037 INFO L933 BasicCegarLoop]: 3346 mSDtfsCounter, 4385 mSDsluCounter, 2921 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 525 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4385 SdHoareTripleChecker+Valid, 6267 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:48,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4385 Valid, 6267 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 945 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2021-11-19 13:42:48,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21164 states. [2021-11-19 13:42:49,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21164 to 21122. [2021-11-19 13:42:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21122 states, 14342 states have (on average 1.2549853576906986) internal successors, (17999), 14789 states have internal predecessors, (17999), 5455 states have call successors, (5455), 1333 states have call predecessors, (5455), 1322 states have return successors, (5455), 5385 states have call predecessors, (5455), 5451 states have call successors, (5455) [2021-11-19 13:42:49,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21122 states to 21122 states and 28909 transitions. [2021-11-19 13:42:49,768 INFO L78 Accepts]: Start accepts. Automaton has 21122 states and 28909 transitions. Word has length 128 [2021-11-19 13:42:49,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:49,768 INFO L470 AbstractCegarLoop]: Abstraction has 21122 states and 28909 transitions. [2021-11-19 13:42:49,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:42:49,768 INFO L276 IsEmpty]: Start isEmpty. Operand 21122 states and 28909 transitions. [2021-11-19 13:42:49,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-19 13:42:49,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:49,774 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:49,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 13:42:49,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:42:49,975 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:42:49,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:49,976 INFO L85 PathProgramCache]: Analyzing trace with hash 2124354506, now seen corresponding path program 1 times [2021-11-19 13:42:49,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:42:49,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047905378] [2021-11-19 13:42:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:49,978 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:42:49,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:42:49,978 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:42:49,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:42:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:50,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:42:50,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:42:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-19 13:42:53,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-19 13:42:54,457 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:42:54,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047905378] [2021-11-19 13:42:54,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047905378] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:54,457 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:54,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 13:42:54,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861002215] [2021-11-19 13:42:54,458 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:54,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:42:54,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:42:54,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:42:54,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:42:54,460 INFO L87 Difference]: Start difference. First operand 21122 states and 28909 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-19 13:42:55,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:55,937 INFO L93 Difference]: Finished difference Result 21128 states and 28914 transitions. [2021-11-19 13:42:55,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:42:55,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 172 [2021-11-19 13:42:55,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:56,045 INFO L225 Difference]: With dead ends: 21128 [2021-11-19 13:42:56,046 INFO L226 Difference]: Without dead ends: 21126 [2021-11-19 13:42:56,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:42:56,062 INFO L933 BasicCegarLoop]: 2238 mSDtfsCounter, 2164 mSDsluCounter, 6707 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2167 SdHoareTripleChecker+Valid, 8945 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:56,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2167 Valid, 8945 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:42:56,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21126 states. [2021-11-19 13:42:57,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21126 to 21126. [2021-11-19 13:42:57,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21126 states, 14345 states have (on average 1.2549320320669222) internal successors, (18002), 14792 states have internal predecessors, (18002), 5455 states have call successors, (5455), 1334 states have call predecessors, (5455), 1323 states have return successors, (5455), 5385 states have call predecessors, (5455), 5451 states have call successors, (5455) [2021-11-19 13:42:57,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21126 states to 21126 states and 28912 transitions. [2021-11-19 13:42:57,382 INFO L78 Accepts]: Start accepts. Automaton has 21126 states and 28912 transitions. Word has length 172 [2021-11-19 13:42:57,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:57,383 INFO L470 AbstractCegarLoop]: Abstraction has 21126 states and 28912 transitions. [2021-11-19 13:42:57,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-19 13:42:57,383 INFO L276 IsEmpty]: Start isEmpty. Operand 21126 states and 28912 transitions. [2021-11-19 13:42:57,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-19 13:42:57,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:57,391 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:57,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:42:57,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:42:57,604 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:42:57,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:57,605 INFO L85 PathProgramCache]: Analyzing trace with hash 977899430, now seen corresponding path program 1 times [2021-11-19 13:42:57,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:42:57,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073733443] [2021-11-19 13:42:57,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:57,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:42:57,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:42:57,608 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:42:57,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:42:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:58,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:42:58,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:00,872 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-19 13:43:00,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-19 13:43:01,972 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:43:01,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073733443] [2021-11-19 13:43:01,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073733443] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:43:01,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:43:01,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-19 13:43:01,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137321331] [2021-11-19 13:43:01,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:01,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:43:01,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:43:01,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:43:01,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:01,975 INFO L87 Difference]: Start difference. First operand 21126 states and 28912 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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 13:43:02,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:02,986 INFO L93 Difference]: Finished difference Result 21132 states and 28917 transitions. [2021-11-19 13:43:02,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:43:02,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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 177 [2021-11-19 13:43:02,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:03,127 INFO L225 Difference]: With dead ends: 21132 [2021-11-19 13:43:03,128 INFO L226 Difference]: Without dead ends: 21130 [2021-11-19 13:43:03,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:03,139 INFO L933 BasicCegarLoop]: 2241 mSDtfsCounter, 2188 mSDsluCounter, 4471 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2190 SdHoareTripleChecker+Valid, 6712 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:03,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2190 Valid, 6712 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:03,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21130 states. [2021-11-19 13:43:04,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21130 to 21130. [2021-11-19 13:43:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21130 states, 14348 states have (on average 1.254878728742682) internal successors, (18005), 14795 states have internal predecessors, (18005), 5455 states have call successors, (5455), 1335 states have call predecessors, (5455), 1324 states have return successors, (5455), 5385 states have call predecessors, (5455), 5451 states have call successors, (5455) [2021-11-19 13:43:04,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21130 states to 21130 states and 28915 transitions. [2021-11-19 13:43:04,639 INFO L78 Accepts]: Start accepts. Automaton has 21130 states and 28915 transitions. Word has length 177 [2021-11-19 13:43:04,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:04,640 INFO L470 AbstractCegarLoop]: Abstraction has 21130 states and 28915 transitions. [2021-11-19 13:43:04,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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 13:43:04,640 INFO L276 IsEmpty]: Start isEmpty. Operand 21130 states and 28915 transitions. [2021-11-19 13:43:04,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-19 13:43:04,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:04,650 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:04,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:43:04,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:43:04,872 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:43:04,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:04,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1803864822, now seen corresponding path program 1 times [2021-11-19 13:43:04,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:43:04,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386945912] [2021-11-19 13:43:04,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:04,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:43:04,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:43:04,877 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:43:04,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:43:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:05,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:43:05,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2021-11-19 13:43:08,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:09,191 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2021-11-19 13:43:09,191 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:43:09,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386945912] [2021-11-19 13:43:09,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386945912] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:43:09,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:43:09,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-19 13:43:09,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381443034] [2021-11-19 13:43:09,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:09,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:43:09,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:43:09,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:43:09,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:09,195 INFO L87 Difference]: Start difference. First operand 21130 states and 28915 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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 13:43:10,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:10,255 INFO L93 Difference]: Finished difference Result 21136 states and 28920 transitions. [2021-11-19 13:43:10,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:43:10,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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 182 [2021-11-19 13:43:10,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:10,363 INFO L225 Difference]: With dead ends: 21136 [2021-11-19 13:43:10,363 INFO L226 Difference]: Without dead ends: 21132 [2021-11-19 13:43:10,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:10,378 INFO L933 BasicCegarLoop]: 2241 mSDtfsCounter, 2160 mSDsluCounter, 4497 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 6738 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:10,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2161 Valid, 6738 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:10,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21132 states. [2021-11-19 13:43:11,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21132 to 21132. [2021-11-19 13:43:11,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21132 states, 14350 states have (on average 1.254773519163763) internal successors, (18006), 14796 states have internal predecessors, (18006), 5455 states have call successors, (5455), 1336 states have call predecessors, (5455), 1324 states have return successors, (5455), 5385 states have call predecessors, (5455), 5451 states have call successors, (5455) [2021-11-19 13:43:11,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21132 states to 21132 states and 28916 transitions. [2021-11-19 13:43:11,626 INFO L78 Accepts]: Start accepts. Automaton has 21132 states and 28916 transitions. Word has length 182 [2021-11-19 13:43:11,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:11,627 INFO L470 AbstractCegarLoop]: Abstraction has 21132 states and 28916 transitions. [2021-11-19 13:43:11,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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 13:43:11,627 INFO L276 IsEmpty]: Start isEmpty. Operand 21132 states and 28916 transitions. [2021-11-19 13:43:11,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-19 13:43:11,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:11,635 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:11,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:43:11,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:43:11,848 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:43:11,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:11,849 INFO L85 PathProgramCache]: Analyzing trace with hash 726296038, now seen corresponding path program 1 times [2021-11-19 13:43:11,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:43:11,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572522574] [2021-11-19 13:43:11,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:11,851 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:43:11,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:43:11,852 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:43:11,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:43:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:12,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:43:12,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:14,902 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2021-11-19 13:43:14,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2021-11-19 13:43:15,963 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:43:15,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572522574] [2021-11-19 13:43:15,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572522574] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:43:15,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:43:15,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-19 13:43:15,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653713276] [2021-11-19 13:43:15,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:15,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:43:15,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:43:15,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:43:15,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:15,964 INFO L87 Difference]: Start difference. First operand 21132 states and 28916 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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 13:43:17,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:17,022 INFO L93 Difference]: Finished difference Result 21132 states and 28916 transitions. [2021-11-19 13:43:17,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:43:17,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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 187 [2021-11-19 13:43:17,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:17,124 INFO L225 Difference]: With dead ends: 21132 [2021-11-19 13:43:17,124 INFO L226 Difference]: Without dead ends: 21013 [2021-11-19 13:43:17,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:17,136 INFO L933 BasicCegarLoop]: 2239 mSDtfsCounter, 2184 mSDsluCounter, 4470 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 6709 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:17,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2184 Valid, 6709 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:43:17,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21013 states. [2021-11-19 13:43:18,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21013 to 20950. [2021-11-19 13:43:18,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20950 states, 14236 states have (on average 1.25175611126721) internal successors, (17820), 14655 states have internal predecessors, (17820), 5394 states have call successors, (5394), 1322 states have call predecessors, (5394), 1318 states have return successors, (5398), 5358 states have call predecessors, (5398), 5394 states have call successors, (5398) [2021-11-19 13:43:18,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20950 states to 20950 states and 28612 transitions. [2021-11-19 13:43:18,686 INFO L78 Accepts]: Start accepts. Automaton has 20950 states and 28612 transitions. Word has length 187 [2021-11-19 13:43:18,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:18,687 INFO L470 AbstractCegarLoop]: Abstraction has 20950 states and 28612 transitions. [2021-11-19 13:43:18,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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 13:43:18,687 INFO L276 IsEmpty]: Start isEmpty. Operand 20950 states and 28612 transitions. [2021-11-19 13:43:18,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-19 13:43:18,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:18,696 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:18,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-19 13:43:18,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:43:18,920 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:43:18,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:18,921 INFO L85 PathProgramCache]: Analyzing trace with hash -673030977, now seen corresponding path program 1 times [2021-11-19 13:43:18,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:43:18,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611625488] [2021-11-19 13:43:18,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:18,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:43:18,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:43:18,923 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:43:18,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:43:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:19,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:43:19,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2021-11-19 13:43:20,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-19 13:43:21,369 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:43:21,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611625488] [2021-11-19 13:43:21,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611625488] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:21,370 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:21,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:43:21,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824384226] [2021-11-19 13:43:21,370 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:21,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:43:21,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:43:21,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:43:21,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:43:21,372 INFO L87 Difference]: Start difference. First operand 20950 states and 28612 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-19 13:43:23,457 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:31,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:31,133 INFO L93 Difference]: Finished difference Result 57669 states and 78871 transitions. [2021-11-19 13:43:31,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:43:31,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 193 [2021-11-19 13:43:31,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:31,298 INFO L225 Difference]: With dead ends: 57669 [2021-11-19 13:43:31,299 INFO L226 Difference]: Without dead ends: 37453 [2021-11-19 13:43:31,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:43:31,391 INFO L933 BasicCegarLoop]: 4027 mSDtfsCounter, 3689 mSDsluCounter, 3202 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3689 SdHoareTripleChecker+Valid, 7229 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:31,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3689 Valid, 7229 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 943 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2021-11-19 13:43:31,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37453 states. [2021-11-19 13:43:33,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37453 to 37439. [2021-11-19 13:43:33,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37439 states, 25518 states have (on average 1.2556234814640646) internal successors, (32041), 26260 states have internal predecessors, (32041), 9560 states have call successors, (9560), 2363 states have call predecessors, (9560), 2359 states have return successors, (9564), 9515 states have call predecessors, (9564), 9560 states have call successors, (9564) [2021-11-19 13:43:33,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37439 states to 37439 states and 51165 transitions. [2021-11-19 13:43:33,651 INFO L78 Accepts]: Start accepts. Automaton has 37439 states and 51165 transitions. Word has length 193 [2021-11-19 13:43:33,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:33,653 INFO L470 AbstractCegarLoop]: Abstraction has 37439 states and 51165 transitions. [2021-11-19 13:43:33,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-19 13:43:33,654 INFO L276 IsEmpty]: Start isEmpty. Operand 37439 states and 51165 transitions. [2021-11-19 13:43:33,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-19 13:43:33,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:33,682 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 13:43:33,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:43:33,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:43:33,904 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:43:33,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:33,905 INFO L85 PathProgramCache]: Analyzing trace with hash 426839448, now seen corresponding path program 1 times [2021-11-19 13:43:33,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:43:33,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600723139] [2021-11-19 13:43:33,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:33,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:43:33,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:43:33,907 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:43:33,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:43:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:34,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:43:35,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:35,835 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2021-11-19 13:43:35,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:36,641 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2021-11-19 13:43:36,642 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:43:36,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600723139] [2021-11-19 13:43:36,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600723139] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:36,642 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:36,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:43:36,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650077970] [2021-11-19 13:43:36,642 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:36,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:43:36,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:43:36,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:43:36,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:43:36,644 INFO L87 Difference]: Start difference. First operand 37439 states and 51165 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-19 13:43:38,734 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 13:43:48,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:48,290 INFO L93 Difference]: Finished difference Result 84646 states and 115710 transitions. [2021-11-19 13:43:48,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:43:48,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) Word has length 293 [2021-11-19 13:43:48,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:48,491 INFO L225 Difference]: With dead ends: 84646 [2021-11-19 13:43:48,491 INFO L226 Difference]: Without dead ends: 47941 [2021-11-19 13:43:48,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:43:48,597 INFO L933 BasicCegarLoop]: 4015 mSDtfsCounter, 3724 mSDsluCounter, 2875 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 322 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3724 SdHoareTripleChecker+Valid, 6890 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:48,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3724 Valid, 6890 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 932 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2021-11-19 13:43:48,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47941 states. [2021-11-19 13:43:51,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47941 to 47927. [2021-11-19 13:43:51,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47927 states, 32714 states have (on average 1.2563734181084552) internal successors, (41101), 33658 states have internal predecessors, (41101), 12182 states have call successors, (12182), 3033 states have call predecessors, (12182), 3029 states have return successors, (12186), 12131 states have call predecessors, (12186), 12182 states have call successors, (12186) [2021-11-19 13:43:51,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47927 states to 47927 states and 65469 transitions. [2021-11-19 13:43:51,498 INFO L78 Accepts]: Start accepts. Automaton has 47927 states and 65469 transitions. Word has length 293 [2021-11-19 13:43:51,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:51,499 INFO L470 AbstractCegarLoop]: Abstraction has 47927 states and 65469 transitions. [2021-11-19 13:43:51,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-19 13:43:51,500 INFO L276 IsEmpty]: Start isEmpty. Operand 47927 states and 65469 transitions. [2021-11-19 13:43:51,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-11-19 13:43:51,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:51,527 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:43:51,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:43:51,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:43:51,741 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:43:51,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:51,741 INFO L85 PathProgramCache]: Analyzing trace with hash 839433899, now seen corresponding path program 1 times [2021-11-19 13:43:51,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:43:51,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390171204] [2021-11-19 13:43:51,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:51,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:43:51,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:43:51,745 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:43:51,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:43:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:52,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:43:52,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:53,717 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2021-11-19 13:43:53,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:54,645 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2021-11-19 13:43:54,645 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:43:54,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390171204] [2021-11-19 13:43:54,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390171204] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:54,647 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:54,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:43:54,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200692365] [2021-11-19 13:43:54,647 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:54,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:43:54,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:43:54,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:43:54,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:43:54,649 INFO L87 Difference]: Start difference. First operand 47927 states and 65469 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-19 13:43:56,798 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 13:44:06,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:06,344 INFO L93 Difference]: Finished difference Result 106034 states and 144832 transitions. [2021-11-19 13:44:06,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:44:06,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) Word has length 298 [2021-11-19 13:44:06,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:06,597 INFO L225 Difference]: With dead ends: 106034 [2021-11-19 13:44:06,597 INFO L226 Difference]: Without dead ends: 58841 [2021-11-19 13:44:06,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 592 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:44:06,728 INFO L933 BasicCegarLoop]: 4044 mSDtfsCounter, 3941 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 490 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3941 SdHoareTripleChecker+Valid, 6724 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:06,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3941 Valid, 6724 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 787 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2021-11-19 13:44:06,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58841 states. [2021-11-19 13:44:10,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58841 to 58827. [2021-11-19 13:44:10,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58827 states, 40210 states have (on average 1.2566774434220342) internal successors, (50531), 41360 states have internal predecessors, (50531), 14876 states have call successors, (14876), 3743 states have call predecessors, (14876), 3739 states have return successors, (14880), 14819 states have call predecessors, (14880), 14876 states have call successors, (14880) [2021-11-19 13:44:10,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58827 states to 58827 states and 80287 transitions. [2021-11-19 13:44:10,315 INFO L78 Accepts]: Start accepts. Automaton has 58827 states and 80287 transitions. Word has length 298 [2021-11-19 13:44:10,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:10,315 INFO L470 AbstractCegarLoop]: Abstraction has 58827 states and 80287 transitions. [2021-11-19 13:44:10,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-19 13:44:10,316 INFO L276 IsEmpty]: Start isEmpty. Operand 58827 states and 80287 transitions. [2021-11-19 13:44:10,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-11-19 13:44:10,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:10,345 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 11, 11, 11, 8, 8, 8, 8, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:10,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:44:10,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:44:10,560 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:44:10,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:10,561 INFO L85 PathProgramCache]: Analyzing trace with hash -665013715, now seen corresponding path program 1 times [2021-11-19 13:44:10,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:44:10,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403321169] [2021-11-19 13:44:10,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:10,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:44:10,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:44:10,564 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:44:10,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f202cc-ca65-4661-8d79-e2b13052ffe4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:44:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:11,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1535 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:44:11,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:44:12,993 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked. [2021-11-19 13:44:12,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:44:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2021-11-19 13:44:13,926 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:44:13,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403321169] [2021-11-19 13:44:13,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403321169] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:13,926 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:13,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:44:13,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283962865] [2021-11-19 13:44:13,927 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:13,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:44:13,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:44:13,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:44:13,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:44:13,928 INFO L87 Difference]: Start difference. First operand 58827 states and 80287 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) [2021-11-19 13:44:16,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:44:26,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:26,807 INFO L93 Difference]: Finished difference Result 127446 states and 173966 transitions. [2021-11-19 13:44:26,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:44:26,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) Word has length 358 [2021-11-19 13:44:26,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:27,303 INFO L225 Difference]: With dead ends: 127446 [2021-11-19 13:44:27,303 INFO L226 Difference]: Without dead ends: 69353 [2021-11-19 13:44:27,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:44:27,447 INFO L933 BasicCegarLoop]: 3866 mSDtfsCounter, 3703 mSDsluCounter, 3168 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3703 SdHoareTripleChecker+Valid, 7034 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:27,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3703 Valid, 7034 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 944 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2021-11-19 13:44:27,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69353 states.