./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/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 ebed12b86dce507000a7a0630996a9595573172c73db75fed69855441af252c1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:22:25,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:22:25,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:22:26,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:22:26,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:22:26,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:22:26,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:22:26,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:22:26,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:22:26,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:22:26,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:22:26,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:22:26,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:22:26,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:22:26,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:22:26,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:22:26,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:22:26,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:22:26,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:22:26,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:22:26,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:22:26,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:22:26,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:22:26,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:22:26,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:22:26,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:22:26,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:22:26,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:22:26,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:22:26,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:22:26,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:22:26,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:22:26,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:22:26,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:22:26,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:22:26,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:22:26,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:22:26,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:22:26,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:22:26,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:22:26,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:22:26,076 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:22:26,125 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:22:26,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:22:26,127 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:22:26,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:22:26,127 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:22:26,128 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:22:26,128 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:22:26,128 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:22:26,128 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:22:26,128 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:22:26,129 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:22:26,130 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:22:26,130 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:22:26,130 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:22:26,130 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:22:26,131 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:22:26,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:22:26,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:22:26,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:22:26,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:22:26,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:22:26,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:22:26,133 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:22:26,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:22:26,133 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:22:26,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:22:26,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:22:26,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:22:26,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:22:26,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:22:26,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:22:26,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:22:26,136 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:22:26,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:22:26,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:22:26,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:22:26,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:22:26,137 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebed12b86dce507000a7a0630996a9595573172c73db75fed69855441af252c1 [2021-11-19 13:22:26,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:22:26,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:22:26,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:22:26,421 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:22:26,422 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:22:26,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2021-11-19 13:22:26,507 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/data/1120097f6/1e6e171d861d4844af4af8e3a2f60bdd/FLAG3961b6bfe [2021-11-19 13:22:27,519 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:22:27,521 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2021-11-19 13:22:27,592 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/data/1120097f6/1e6e171d861d4844af4af8e3a2f60bdd/FLAG3961b6bfe [2021-11-19 13:22:27,887 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/data/1120097f6/1e6e171d861d4844af4af8e3a2f60bdd [2021-11-19 13:22:27,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:22:27,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:22:27,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:22:27,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:22:27,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:22:27,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:22:27" (1/1) ... [2021-11-19 13:22:27,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635601a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:27, skipping insertion in model container [2021-11-19 13:22:27,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:22:27" (1/1) ... [2021-11-19 13:22:27,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:22:28,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:22:30,536 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 13:22:30,547 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 13:22:31,429 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 13:22:31,438 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 13:22:32,426 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402143,402156] [2021-11-19 13:22:32,429 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402312,402325] [2021-11-19 13:22:32,430 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402479,402492] [2021-11-19 13:22:32,430 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402647,402660] [2021-11-19 13:22:32,457 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:22:32,519 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 13:22:32,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@61cbddb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:32, skipping insertion in model container [2021-11-19 13:22:32,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:22:32,523 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:22:32,525 INFO L158 Benchmark]: Toolchain (without parser) took 4633.47ms. Allocated memory was 86.0MB in the beginning and 146.8MB in the end (delta: 60.8MB). Free memory was 51.7MB in the beginning and 50.8MB in the end (delta: 865.4kB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. [2021-11-19 13:22:32,527 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 86.0MB. Free memory was 57.8MB in the beginning and 57.7MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:22:32,528 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4631.01ms. Allocated memory was 86.0MB in the beginning and 146.8MB in the end (delta: 60.8MB). Free memory was 51.7MB in the beginning and 51.8MB in the end (delta: -181.1kB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. [2021-11-19 13:22:32,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 86.0MB. Free memory was 57.8MB in the beginning and 57.7MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4631.01ms. Allocated memory was 86.0MB in the beginning and 146.8MB in the end (delta: 60.8MB). Free memory was 51.7MB in the beginning and 51.8MB in the end (delta: -181.1kB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4819]: 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/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 ebed12b86dce507000a7a0630996a9595573172c73db75fed69855441af252c1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:22:34,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:22:34,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:22:34,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:22:34,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:22:34,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:22:34,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:22:34,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:22:34,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:22:34,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:22:34,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:22:34,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:22:34,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:22:34,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:22:34,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:22:34,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:22:34,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:22:34,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:22:34,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:22:34,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:22:34,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:22:34,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:22:34,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:22:34,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:22:34,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:22:34,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:22:34,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:22:34,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:22:34,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:22:34,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:22:34,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:22:34,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:22:34,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:22:34,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:22:34,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:22:34,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:22:34,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:22:34,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:22:34,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:22:34,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:22:34,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:22:34,933 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:22:34,966 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:22:34,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:22:34,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:22:34,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:22:34,967 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:22:34,968 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:22:34,968 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:22:34,968 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:22:34,968 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:22:34,968 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:22:34,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:22:34,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:22:34,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:22:34,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:22:34,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:22:34,970 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:22:34,971 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:22:34,971 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:22:34,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:22:34,971 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:22:34,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:22:34,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:22:34,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:22:34,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:22:34,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:22:34,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:22:34,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:22:34,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:22:34,973 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:22:34,973 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:34,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:22:34,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:22:34,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:22:34,974 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebed12b86dce507000a7a0630996a9595573172c73db75fed69855441af252c1 [2021-11-19 13:22:35,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:22:35,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:22:35,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:22:35,426 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:22:35,427 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:22:35,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2021-11-19 13:22:35,508 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/data/e4e615d2a/210e23f9898f4c32bb56015038bab038/FLAG6fdf12ca4 [2021-11-19 13:22:36,613 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:22:36,614 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2021-11-19 13:22:36,683 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/data/e4e615d2a/210e23f9898f4c32bb56015038bab038/FLAG6fdf12ca4 [2021-11-19 13:22:36,871 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/data/e4e615d2a/210e23f9898f4c32bb56015038bab038 [2021-11-19 13:22:36,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:22:36,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:22:36,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:22:36,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:22:36,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:22:36,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:22:36" (1/1) ... [2021-11-19 13:22:36,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60e4b0c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:36, skipping insertion in model container [2021-11-19 13:22:36,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:22:36" (1/1) ... [2021-11-19 13:22:36,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:22:37,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:22:41,205 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402143,402156] [2021-11-19 13:22:41,208 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402312,402325] [2021-11-19 13:22:41,208 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402479,402492] [2021-11-19 13:22:41,209 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402647,402660] [2021-11-19 13:22:41,234 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:22:41,274 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:22:41,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:22:41,849 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402143,402156] [2021-11-19 13:22:41,850 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402312,402325] [2021-11-19 13:22:41,850 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402479,402492] [2021-11-19 13:22:41,852 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402647,402660] [2021-11-19 13:22:41,867 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:22:41,903 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:22:42,373 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402143,402156] [2021-11-19 13:22:42,374 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402312,402325] [2021-11-19 13:22:42,374 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402479,402492] [2021-11-19 13:22:42,375 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_b61c8f2a-a33d-48d8-bc43-babc858f58ae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402647,402660] [2021-11-19 13:22:42,382 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:22:42,599 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:22:42,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:42 WrapperNode [2021-11-19 13:22:42,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:22:42,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:22:42,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:22:42,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:22:42,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:42" (1/1) ... [2021-11-19 13:22:42,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:42" (1/1) ... [2021-11-19 13:22:43,078 INFO L137 Inliner]: procedures = 567, calls = 3557, calls flagged for inlining = 272, calls inlined = 248, statements flattened = 8561 [2021-11-19 13:22:43,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:22:43,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:22:43,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:22:43,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:22:43,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:42" (1/1) ... [2021-11-19 13:22:43,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:42" (1/1) ... [2021-11-19 13:22:43,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:42" (1/1) ... [2021-11-19 13:22:43,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:42" (1/1) ... [2021-11-19 13:22:43,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:42" (1/1) ... [2021-11-19 13:22:43,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:42" (1/1) ... [2021-11-19 13:22:43,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:42" (1/1) ... [2021-11-19 13:22:43,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:22:43,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:22:43,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:22:43,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:22:43,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:42" (1/1) ... [2021-11-19 13:22:43,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:22:43,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:22:43,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:22:43,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:22:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_evict_inode [2021-11-19 13:22:43,732 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_evict_inode [2021-11-19 13:22:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure dput [2021-11-19 13:22:43,733 INFO L138 BoogieDeclarations]: Found implementation of procedure dput [2021-11-19 13:22:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 13:22:43,733 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 13:22:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_unlink [2021-11-19 13:22:43,733 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_unlink [2021-11-19 13:22:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_get_inode [2021-11-19 13:22:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_get_inode [2021-11-19 13:22:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-19 13:22:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-19 13:22:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 13:22:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 13:22:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_lseek [2021-11-19 13:22:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_lseek [2021-11-19 13:22:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure do_expire_wait [2021-11-19 13:22:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure do_expire_wait [2021-11-19 13:22:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 13:22:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 13:22:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-19 13:22:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-19 13:22:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure dget [2021-11-19 13:22:43,736 INFO L138 BoogieDeclarations]: Found implementation of procedure dget [2021-11-19 13:22:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2021-11-19 13:22:43,736 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_release [2021-11-19 13:22:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure current_kernel_time [2021-11-19 13:22:43,736 INFO L138 BoogieDeclarations]: Found implementation of procedure current_kernel_time [2021-11-19 13:22:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_indirect [2021-11-19 13:22:43,737 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_indirect [2021-11-19 13:22:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure new_encode_dev [2021-11-19 13:22:43,737 INFO L138 BoogieDeclarations]: Found implementation of procedure new_encode_dev [2021-11-19 13:22:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_clear_managed [2021-11-19 13:22:43,737 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_clear_managed [2021-11-19 13:22:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure from_kgid_munged [2021-11-19 13:22:43,738 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kgid_munged [2021-11-19 13:22:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure follow_down_one [2021-11-19 13:22:43,738 INFO L138 BoogieDeclarations]: Found implementation of procedure follow_down_one [2021-11-19 13:22:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_show_options [2021-11-19 13:22:43,738 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_show_options [2021-11-19 13:22:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_48 [2021-11-19 13:22:43,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_48 [2021-11-19 13:22:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_57 [2021-11-19 13:22:43,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_57 [2021-11-19 13:22:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure __autofs4_add_expiring [2021-11-19 13:22:43,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __autofs4_add_expiring [2021-11-19 13:22:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 13:22:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_wait [2021-11-19 13:22:43,740 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_wait [2021-11-19 13:22:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl [2021-11-19 13:22:43,740 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl [2021-11-19 13:22:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 13:22:43,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 13:22:43,741 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-11-19 13:22:43,741 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-11-19 13:22:43,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 13:22:43,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 13:22:43,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:22:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure d_count [2021-11-19 13:22:43,742 INFO L138 BoogieDeclarations]: Found implementation of procedure d_count [2021-11-19 13:22:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 13:22:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:22:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-19 13:22:43,742 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-19 13:22:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:22:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure from_kuid_munged [2021-11-19 13:22:43,743 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kuid_munged [2021-11-19 13:22:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-19 13:22:43,743 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-19 13:22:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-19 13:22:43,743 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-19 13:22:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-19 13:22:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-19 13:22:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_oz_mode [2021-11-19 13:22:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_oz_mode [2021-11-19 13:22:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_do_expire_multi [2021-11-19 13:22:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_do_expire_multi [2021-11-19 13:22:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2021-11-19 13:22:43,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2021-11-19 13:22:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure __task_pid_nr_ns [2021-11-19 13:22:43,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __task_pid_nr_ns [2021-11-19 13:22:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-19 13:22:43,745 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-19 13:22:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_54 [2021-11-19 13:22:43,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_54 [2021-11-19 13:22:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_sbi [2021-11-19 13:22:43,746 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_sbi [2021-11-19 13:22:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-19 13:22:43,746 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-19 13:22:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_siglock_of_sighand_struct [2021-11-19 13:22:43,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_siglock_of_sighand_struct [2021-11-19 13:22:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_new_ino [2021-11-19 13:22:43,747 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_new_ino [2021-11-19 13:22:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure simple_empty [2021-11-19 13:22:43,747 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_empty [2021-11-19 13:22:43,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 13:22:43,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 13:22:43,748 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_can_expire [2021-11-19 13:22:43,748 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_can_expire [2021-11-19 13:22:43,748 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_ino [2021-11-19 13:22:43,749 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_ino [2021-11-19 13:22:43,749 INFO L130 BoogieDeclarations]: Found specification of procedure fget [2021-11-19 13:22:43,749 INFO L138 BoogieDeclarations]: Found implementation of procedure fget [2021-11-19 13:22:43,749 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_open [2021-11-19 13:22:43,749 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_open [2021-11-19 13:22:43,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 13:22:43,749 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 13:22:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_rmdir [2021-11-19 13:22:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_rmdir [2021-11-19 13:22:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount [2021-11-19 13:22:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount [2021-11-19 13:22:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl_exit [2021-11-19 13:22:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl_exit [2021-11-19 13:22:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-19 13:22:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-19 13:22:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 13:22:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 13:22:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_open [2021-11-19 13:22:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_open [2021-11-19 13:22:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-19 13:22:43,752 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-19 13:22:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure clear_nlink [2021-11-19 13:22:43,752 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_nlink [2021-11-19 13:22:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-19 13:22:43,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-19 13:22:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_trigger [2021-11-19 13:22:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_trigger [2021-11-19 13:22:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 13:22:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 13:22:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:22:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-11-19 13:22:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-11-19 13:22:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 13:22:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 13:22:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 13:22:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 13:22:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-19 13:22:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-19 13:22:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-19 13:22:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-19 13:22:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-19 13:22:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-19 13:22:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-19 13:22:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:22:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 13:22:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 13:22:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:22:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-19 13:22:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure simple_positive [2021-11-19 13:22:43,757 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_positive [2021-11-19 13:22:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 13:22:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 13:22:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 13:22:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-19 13:22:43,757 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-19 13:22:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure path_get [2021-11-19 13:22:43,758 INFO L138 BoogieDeclarations]: Found implementation of procedure path_get [2021-11-19 13:22:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure dget_dlock [2021-11-19 13:22:43,758 INFO L138 BoogieDeclarations]: Found implementation of procedure dget_dlock [2021-11-19 13:22:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure d_lookup [2021-11-19 13:22:43,758 INFO L138 BoogieDeclarations]: Found implementation of procedure d_lookup [2021-11-19 13:22:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-19 13:22:43,759 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-19 13:22:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-19 13:22:43,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-19 13:22:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure recalc_sigpending [2021-11-19 13:22:43,759 INFO L138 BoogieDeclarations]: Found implementation of procedure recalc_sigpending [2021-11-19 13:22:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-19 13:22:43,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-19 13:22:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure d_drop [2021-11-19 13:22:43,760 INFO L138 BoogieDeclarations]: Found implementation of procedure d_drop [2021-11-19 13:22:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 13:22:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_mount [2021-11-19 13:22:43,760 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_mount [2021-11-19 13:22:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_indirect [2021-11-19 13:22:43,761 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_indirect [2021-11-19 13:22:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:22:43,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:22:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_wait [2021-11-19 13:22:43,761 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_wait [2021-11-19 13:22:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-19 13:22:43,762 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-19 13:22:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl [2021-11-19 13:22:43,762 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl [2021-11-19 13:22:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:22:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure complete_all [2021-11-19 13:22:43,762 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_all [2021-11-19 13:22:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2021-11-19 13:22:43,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2021-11-19 13:22:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:22:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:22:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 13:22:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 13:22:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 13:22:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait_release [2021-11-19 13:22:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait_release [2021-11-19 13:22:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 13:22:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 13:22:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl_unlocked [2021-11-19 13:22:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl_unlocked [2021-11-19 13:22:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 13:22:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 13:22:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2021-11-19 13:22:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2021-11-19 13:22:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-19 13:22:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-19 13:22:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-19 13:22:43,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-19 13:22:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_compat_ioctl [2021-11-19 13:22:43,766 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_compat_ioctl [2021-11-19 13:22:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure read_seqretry [2021-11-19 13:22:43,766 INFO L138 BoogieDeclarations]: Found implementation of procedure read_seqretry [2021-11-19 13:22:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-19 13:22:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-19 13:22:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-19 13:22:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-19 13:22:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_readdir [2021-11-19 13:22:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_readdir [2021-11-19 13:22:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure d_instantiate [2021-11-19 13:22:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure d_instantiate [2021-11-19 13:22:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-19 13:22:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-19 13:22:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount_tree [2021-11-19 13:22:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount_tree [2021-11-19 13:22:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-19 13:22:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-19 13:22:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure simple_statfs [2021-11-19 13:22:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_statfs [2021-11-19 13:22:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 13:22:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 13:22:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure get_task_pid [2021-11-19 13:22:43,770 INFO L138 BoogieDeclarations]: Found implementation of procedure get_task_pid [2021-11-19 13:22:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure path_put [2021-11-19 13:22:43,770 INFO L138 BoogieDeclarations]: Found implementation of procedure path_put [2021-11-19 13:22:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_busy [2021-11-19 13:22:43,770 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_busy [2021-11-19 13:22:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure d_unhashed [2021-11-19 13:22:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure d_unhashed [2021-11-19 13:22:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-19 13:22:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-19 13:22:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_kill_sb [2021-11-19 13:22:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_kill_sb [2021-11-19 13:22:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:22:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-19 13:22:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-19 13:22:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure generic_read_dir [2021-11-19 13:22:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_read_dir [2021-11-19 13:22:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-19 13:22:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-19 13:22:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_set_managed [2021-11-19 13:22:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_set_managed [2021-11-19 13:22:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:22:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2021-11-19 13:22:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2021-11-19 13:22:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2021-11-19 13:22:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2021-11-19 13:22:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:22:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 13:22:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 13:22:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:22:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:22:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-19 13:22:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-19 13:22:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-19 13:22:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-19 13:22:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure find_autofs_mount [2021-11-19 13:22:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure find_autofs_mount [2021-11-19 13:22:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-19 13:22:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-19 13:22:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 13:22:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 13:22:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_close [2021-11-19 13:22:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_close [2021-11-19 13:22:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure ns_of_pid [2021-11-19 13:22:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_of_pid [2021-11-19 13:22:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-19 13:22:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-19 13:22:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_55 [2021-11-19 13:22:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_55 [2021-11-19 13:22:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-19 13:22:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-19 13:22:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_clean_ino [2021-11-19 13:22:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_clean_ino [2021-11-19 13:22:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_49 [2021-11-19 13:22:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_49 [2021-11-19 13:22:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_LONG [2021-11-19 13:22:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_LONG [2021-11-19 13:22:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_77 [2021-11-19 13:22:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_77 [2021-11-19 13:22:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure kern_path_mountpoint [2021-11-19 13:22:43,779 INFO L138 BoogieDeclarations]: Found implementation of procedure kern_path_mountpoint [2021-11-19 13:22:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure get_next_positive_dentry [2021-11-19 13:22:43,779 INFO L138 BoogieDeclarations]: Found implementation of procedure get_next_positive_dentry [2021-11-19 13:22:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 13:22:43,779 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 13:22:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure __managed_dentry_set_managed [2021-11-19 13:22:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __managed_dentry_set_managed [2021-11-19 13:22:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait [2021-11-19 13:22:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait [2021-11-19 13:22:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-11-19 13:22:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-11-19 13:22:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_find_wait [2021-11-19 13:22:43,781 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_find_wait [2021-11-19 13:22:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-19 13:22:43,781 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-19 13:22:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2021-11-19 13:22:43,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2021-11-19 13:22:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_release [2021-11-19 13:22:43,781 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_release [2021-11-19 13:22:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure task_pgrp_nr [2021-11-19 13:22:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pgrp_nr [2021-11-19 13:22:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 13:22:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 13:22:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 13:22:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 13:22:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 13:22:43,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 13:22:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure uid_eq [2021-11-19 13:22:43,783 INFO L138 BoogieDeclarations]: Found implementation of procedure uid_eq [2021-11-19 13:22:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_symlink [2021-11-19 13:22:43,783 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_symlink [2021-11-19 13:22:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2021-11-19 13:22:43,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2021-11-19 13:22:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_78 [2021-11-19 13:22:43,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_78 [2021-11-19 13:22:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2021-11-19 13:22:43,784 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_acquire [2021-11-19 13:22:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-19 13:22:43,784 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-19 13:22:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure d_mountpoint [2021-11-19 13:22:43,785 INFO L138 BoogieDeclarations]: Found implementation of procedure d_mountpoint [2021-11-19 13:22:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-19 13:22:43,785 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-19 13:22:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure have_submounts [2021-11-19 13:22:43,785 INFO L138 BoogieDeclarations]: Found implementation of procedure have_submounts [2021-11-19 13:22:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-19 13:22:43,786 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-19 13:22:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-19 13:22:43,786 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-19 13:22:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-19 13:22:43,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-19 13:22:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-19 13:22:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-19 13:22:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_prepare_pipe [2021-11-19 13:22:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_prepare_pipe [2021-11-19 13:22:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 13:22:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 13:22:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_del_active [2021-11-19 13:22:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_del_active [2021-11-19 13:22:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-19 13:22:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-19 13:22:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-11-19 13:22:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-11-19 13:22:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure d_add [2021-11-19 13:22:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure d_add [2021-11-19 13:22:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_catatonic_mode [2021-11-19 13:22:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_catatonic_mode [2021-11-19 13:22:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure gid_eq [2021-11-19 13:22:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure gid_eq [2021-11-19 13:22:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 13:22:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 13:22:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-19 13:22:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2021-11-19 13:22:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2021-11-19 13:22:44,964 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:22:44,969 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:22:45,255 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 13:22:52,406 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint switch_break: call ULTIMATE.dealloc(~#descriptor~12#1.base, ~#descriptor~12#1.offset);havoc ~#descriptor~12#1.base, ~#descriptor~12#1.offset; [2021-11-19 13:24:09,509 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 13:24:10,587 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:24:10,612 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:24:10,613 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-19 13:24:10,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:24:10 BoogieIcfgContainer [2021-11-19 13:24:10,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:24:10,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:24:10,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:24:10,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:24:10,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:22:36" (1/3) ... [2021-11-19 13:24:10,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e97d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:24:10, skipping insertion in model container [2021-11-19 13:24:10,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:42" (2/3) ... [2021-11-19 13:24:10,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e97d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:24:10, skipping insertion in model container [2021-11-19 13:24:10,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:24:10" (3/3) ... [2021-11-19 13:24:10,628 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2021-11-19 13:24:10,634 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:24:10,634 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-19 13:24:10,706 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:24:10,713 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 13:24:10,713 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 13:24:10,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 3206 states, 2121 states have (on average 1.297972654408298) internal successors, (2753), 2174 states have internal predecessors, (2753), 917 states have call successors, (917), 165 states have call predecessors, (917), 164 states have return successors, (906), 900 states have call predecessors, (906), 906 states have call successors, (906) [2021-11-19 13:24:10,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2021-11-19 13:24:10,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:24:10,836 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:24:10,837 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:24:10,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:24:10,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1177531109, now seen corresponding path program 1 times [2021-11-19 13:24:10,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:24:10,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35317037] [2021-11-19 13:24:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:10,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:24:10,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:24:10,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:24:10,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:24:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:12,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 2358 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:24:12,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8514 trivial. 0 not checked. [2021-11-19 13:24:14,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:16,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2021-11-19 13:24:16,201 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:24:16,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35317037] [2021-11-19 13:24:16,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35317037] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:24:16,203 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:24:16,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:24:16,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252154996] [2021-11-19 13:24:16,206 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:24:16,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:24:16,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:24:16,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:24:16,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:24:16,275 INFO L87 Difference]: Start difference. First operand has 3206 states, 2121 states have (on average 1.297972654408298) internal successors, (2753), 2174 states have internal predecessors, (2753), 917 states have call successors, (917), 165 states have call predecessors, (917), 164 states have return successors, (906), 900 states have call predecessors, (906), 906 states have call successors, (906) Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2021-11-19 13:24:18,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:24:33,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:24:33,458 INFO L93 Difference]: Finished difference Result 12220 states and 18190 transitions. [2021-11-19 13:24:33,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:24:33,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) Word has length 516 [2021-11-19 13:24:33,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:24:33,574 INFO L225 Difference]: With dead ends: 12220 [2021-11-19 13:24:33,575 INFO L226 Difference]: Without dead ends: 9081 [2021-11-19 13:24:33,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 1028 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 13:24:33,637 INFO L933 BasicCegarLoop]: 6162 mSDtfsCounter, 8610 mSDsluCounter, 10887 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8610 SdHoareTripleChecker+Valid, 17049 SdHoareTripleChecker+Invalid, 1910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:24:33,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8610 Valid, 17049 Invalid, 1910 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 1877 Invalid, 1 Unknown, 0 Unchecked, 16.3s Time] [2021-11-19 13:24:33,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9081 states. [2021-11-19 13:24:34,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9081 to 9054. [2021-11-19 13:24:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9054 states, 6013 states have (on average 1.275735905538001) internal successors, (7671), 6158 states have internal predecessors, (7671), 2553 states have call successors, (2553), 485 states have call predecessors, (2553), 484 states have return successors, (2549), 2531 states have call predecessors, (2549), 2549 states have call successors, (2549) [2021-11-19 13:24:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9054 states to 9054 states and 12773 transitions. [2021-11-19 13:24:34,581 INFO L78 Accepts]: Start accepts. Automaton has 9054 states and 12773 transitions. Word has length 516 [2021-11-19 13:24:34,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:24:34,585 INFO L470 AbstractCegarLoop]: Abstraction has 9054 states and 12773 transitions. [2021-11-19 13:24:34,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2021-11-19 13:24:34,585 INFO L276 IsEmpty]: Start isEmpty. Operand 9054 states and 12773 transitions. [2021-11-19 13:24:34,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2021-11-19 13:24:34,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:24:34,620 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:24:34,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 13:24:34,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:24:34,849 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:24:34,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:24:34,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1683860730, now seen corresponding path program 1 times [2021-11-19 13:24:34,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:24:34,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809844486] [2021-11-19 13:24:34,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:34,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:24:34,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:24:34,860 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:24:34,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:24:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:37,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 2448 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:24:37,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8514 trivial. 0 not checked. [2021-11-19 13:24:38,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:39,979 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2021-11-19 13:24:39,979 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:24:39,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809844486] [2021-11-19 13:24:39,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809844486] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:24:39,980 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:24:39,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:24:39,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801458212] [2021-11-19 13:24:39,980 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:24:39,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:24:39,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:24:39,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:24:39,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:24:39,985 INFO L87 Difference]: Start difference. First operand 9054 states and 12773 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (53), 4 states have call predecessors, (53), 4 states have call successors, (53) [2021-11-19 13:24:42,154 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 13:25:00,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:00,681 INFO L93 Difference]: Finished difference Result 29526 states and 41573 transitions. [2021-11-19 13:25:00,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:25:00,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (53), 4 states have call predecessors, (53), 4 states have call successors, (53) Word has length 534 [2021-11-19 13:25:00,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:00,906 INFO L225 Difference]: With dead ends: 29526 [2021-11-19 13:25:00,906 INFO L226 Difference]: Without dead ends: 20565 [2021-11-19 13:25:00,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1066 GetRequests, 1064 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 13:25:00,975 INFO L933 BasicCegarLoop]: 6076 mSDtfsCounter, 11006 mSDsluCounter, 6717 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 1676 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11006 SdHoareTripleChecker+Valid, 12793 SdHoareTripleChecker+Invalid, 3575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1676 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:00,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11006 Valid, 12793 Invalid, 3575 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1676 Valid, 1898 Invalid, 1 Unknown, 0 Unchecked, 19.5s Time] [2021-11-19 13:25:01,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20565 states. [2021-11-19 13:25:02,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20565 to 20511. [2021-11-19 13:25:02,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20511 states, 13681 states have (on average 1.275710839850888) internal successors, (17453), 14018 states have internal predecessors, (17453), 5693 states have call successors, (5693), 1134 states have call predecessors, (5693), 1133 states have return successors, (5697), 5641 states have call predecessors, (5697), 5689 states have call successors, (5697) [2021-11-19 13:25:02,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20511 states to 20511 states and 28843 transitions. [2021-11-19 13:25:02,618 INFO L78 Accepts]: Start accepts. Automaton has 20511 states and 28843 transitions. Word has length 534 [2021-11-19 13:25:02,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:02,624 INFO L470 AbstractCegarLoop]: Abstraction has 20511 states and 28843 transitions. [2021-11-19 13:25:02,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (53), 4 states have call predecessors, (53), 4 states have call successors, (53) [2021-11-19 13:25:02,626 INFO L276 IsEmpty]: Start isEmpty. Operand 20511 states and 28843 transitions. [2021-11-19 13:25:02,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2021-11-19 13:25:02,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:02,649 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:25:02,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:02,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:25:02,876 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:25:02,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:02,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1900306485, now seen corresponding path program 1 times [2021-11-19 13:25:02,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:02,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760797860] [2021-11-19 13:25:02,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:02,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:02,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:02,883 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:02,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:25:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:05,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:25:05,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:06,934 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8514 trivial. 0 not checked. [2021-11-19 13:25:06,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2021-11-19 13:25:08,039 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:08,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760797860] [2021-11-19 13:25:08,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760797860] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:25:08,040 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:25:08,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:25:08,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819549588] [2021-11-19 13:25:08,041 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:25:08,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:25:08,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:08,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:25:08,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:25:08,043 INFO L87 Difference]: Start difference. First operand 20511 states and 28843 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (53), 4 states have call predecessors, (53), 4 states have call successors, (53) [2021-11-19 13:25:10,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:23,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:23,809 INFO L93 Difference]: Finished difference Result 70358 states and 98452 transitions. [2021-11-19 13:25:23,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:25:23,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (53), 4 states have call predecessors, (53), 4 states have call successors, (53) Word has length 535 [2021-11-19 13:25:23,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:24,138 INFO L225 Difference]: With dead ends: 70358 [2021-11-19 13:25:24,139 INFO L226 Difference]: Without dead ends: 49940 [2021-11-19 13:25:24,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1068 GetRequests, 1066 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 13:25:24,254 INFO L933 BasicCegarLoop]: 5978 mSDtfsCounter, 8053 mSDsluCounter, 7748 mSDsCounter, 0 mSdLazyCounter, 1900 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8053 SdHoareTripleChecker+Valid, 13726 SdHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1900 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:24,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8053 Valid, 13726 Invalid, 1938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1900 Invalid, 1 Unknown, 0 Unchecked, 14.1s Time] [2021-11-19 13:25:24,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49940 states. [2021-11-19 13:25:27,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49940 to 49874. [2021-11-19 13:25:27,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49874 states, 33178 states have (on average 1.2684308879377901) internal successors, (42084), 33995 states have internal predecessors, (42084), 13734 states have call successors, (13734), 2959 states have call predecessors, (13734), 2958 states have return successors, (13778), 13605 states have call predecessors, (13778), 13730 states have call successors, (13778) [2021-11-19 13:25:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49874 states to 49874 states and 69596 transitions. [2021-11-19 13:25:28,049 INFO L78 Accepts]: Start accepts. Automaton has 49874 states and 69596 transitions. Word has length 535 [2021-11-19 13:25:28,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:28,053 INFO L470 AbstractCegarLoop]: Abstraction has 49874 states and 69596 transitions. [2021-11-19 13:25:28,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (53), 4 states have call predecessors, (53), 4 states have call successors, (53) [2021-11-19 13:25:28,053 INFO L276 IsEmpty]: Start isEmpty. Operand 49874 states and 69596 transitions. [2021-11-19 13:25:28,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2021-11-19 13:25:28,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:28,072 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:25:28,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 13:25:28,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:25:28,499 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:25:28,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:28,500 INFO L85 PathProgramCache]: Analyzing trace with hash -220593585, now seen corresponding path program 1 times [2021-11-19 13:25:28,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:28,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579138576] [2021-11-19 13:25:28,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:28,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:28,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:28,507 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:28,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:25:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:30,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 2440 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:25:30,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:31,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8514 trivial. 0 not checked. [2021-11-19 13:25:31,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:32,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2021-11-19 13:25:32,937 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:32,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579138576] [2021-11-19 13:25:32,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579138576] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:25:32,938 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:25:32,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:25:32,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279703733] [2021-11-19 13:25:32,939 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:25:32,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:25:32,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:32,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:25:32,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:25:32,941 INFO L87 Difference]: Start difference. First operand 49874 states and 69596 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-19 13:25:35,112 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:38,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:38,363 INFO L93 Difference]: Finished difference Result 142175 states and 197721 transitions. [2021-11-19 13:25:38,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:25:38,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 534 [2021-11-19 13:25:38,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:39,318 INFO L225 Difference]: With dead ends: 142175 [2021-11-19 13:25:39,318 INFO L226 Difference]: Without dead ends: 92394 [2021-11-19 13:25:39,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1066 GetRequests, 1065 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:25:39,536 INFO L933 BasicCegarLoop]: 5289 mSDtfsCounter, 3928 mSDsluCounter, 4430 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3928 SdHoareTripleChecker+Valid, 9719 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:39,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3928 Valid, 9719 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 13:25:39,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92394 states. [2021-11-19 13:25:44,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92394 to 92352. [2021-11-19 13:25:45,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92352 states, 61596 states have (on average 1.2638970062991104) internal successors, (77851), 63036 states have internal predecessors, (77851), 25089 states have call successors, (25089), 5664 states have call predecessors, (25089), 5663 states have return successors, (25181), 24876 states have call predecessors, (25181), 25085 states have call successors, (25181) [2021-11-19 13:25:45,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92352 states to 92352 states and 128121 transitions. [2021-11-19 13:25:45,953 INFO L78 Accepts]: Start accepts. Automaton has 92352 states and 128121 transitions. Word has length 534 [2021-11-19 13:25:45,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:45,955 INFO L470 AbstractCegarLoop]: Abstraction has 92352 states and 128121 transitions. [2021-11-19 13:25:45,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-19 13:25:45,956 INFO L276 IsEmpty]: Start isEmpty. Operand 92352 states and 128121 transitions. [2021-11-19 13:25:45,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2021-11-19 13:25:45,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:45,977 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 44, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:25:46,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:46,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:25:46,204 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:25:46,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:46,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1175065575, now seen corresponding path program 1 times [2021-11-19 13:25:46,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:46,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101869750] [2021-11-19 13:25:46,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:46,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:46,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:46,211 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:46,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:25:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:48,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 2477 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:25:48,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:49,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8652 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8520 trivial. 0 not checked. [2021-11-19 13:25:49,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 8652 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8652 trivial. 0 not checked. [2021-11-19 13:25:51,075 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:51,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101869750] [2021-11-19 13:25:51,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101869750] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:25:51,075 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:25:51,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:25:51,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305457856] [2021-11-19 13:25:51,076 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:25:51,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:25:51,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:51,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:25:51,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:25:51,078 INFO L87 Difference]: Start difference. First operand 92352 states and 128121 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-19 13:25:53,240 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 13:25:59,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:59,378 INFO L93 Difference]: Finished difference Result 261936 states and 362766 transitions. [2021-11-19 13:25:59,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:25:59,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 539 [2021-11-19 13:25:59,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:26:01,178 INFO L225 Difference]: With dead ends: 261936 [2021-11-19 13:26:01,179 INFO L226 Difference]: Without dead ends: 169677 [2021-11-19 13:26:01,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1076 GetRequests, 1075 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:26:01,492 INFO L933 BasicCegarLoop]: 5428 mSDtfsCounter, 3947 mSDsluCounter, 4418 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3947 SdHoareTripleChecker+Valid, 9846 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:26:01,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3947 Valid, 9846 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 13:26:01,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169677 states. [2021-11-19 13:26:09,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169677 to 169617. [2021-11-19 13:26:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169617 states, 113300 states have (on average 1.2623212709620477) internal successors, (143021), 115847 states have internal predecessors, (143021), 45662 states have call successors, (45662), 10652 states have call predecessors, (45662), 10651 states have return successors, (45850), 45203 states have call predecessors, (45850), 45658 states have call successors, (45850) [2021-11-19 13:26:10,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169617 states to 169617 states and 234533 transitions. [2021-11-19 13:26:11,026 INFO L78 Accepts]: Start accepts. Automaton has 169617 states and 234533 transitions. Word has length 539 [2021-11-19 13:26:11,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:26:11,028 INFO L470 AbstractCegarLoop]: Abstraction has 169617 states and 234533 transitions. [2021-11-19 13:26:11,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-19 13:26:11,029 INFO L276 IsEmpty]: Start isEmpty. Operand 169617 states and 234533 transitions. [2021-11-19 13:26:11,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2021-11-19 13:26:11,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:26:11,044 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 44, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:26:11,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:26:11,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:26:11,272 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:26:11,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:26:11,272 INFO L85 PathProgramCache]: Analyzing trace with hash -2127696344, now seen corresponding path program 1 times [2021-11-19 13:26:11,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:26:11,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074348133] [2021-11-19 13:26:11,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:26:11,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:26:11,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:26:11,277 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:26:11,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b61c8f2a-a33d-48d8-bc43-babc858f58ae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:26:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:26:14,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 2644 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:26:14,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:26:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8517 trivial. 0 not checked. [2021-11-19 13:26:15,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:16,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8649 trivial. 0 not checked. [2021-11-19 13:26:16,878 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:26:16,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074348133] [2021-11-19 13:26:16,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074348133] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:26:16,879 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:26:16,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:26:16,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633725983] [2021-11-19 13:26:16,880 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:26:16,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:26:16,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:26:16,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:26:16,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:26:16,881 INFO L87 Difference]: Start difference. First operand 169617 states and 234533 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 4 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) [2021-11-19 13:26:19,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []