./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/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 71a59a3596571aa79fb44a527a9b6a33b40c9acdae164ed96a4388ebcdf2e0df --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:45:49,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:45:49,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:45:49,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:45:49,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:45:49,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:45:49,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:45:49,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:45:49,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:45:49,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:45:49,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:45:49,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:45:49,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:45:49,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:45:49,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:45:49,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:45:49,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:45:49,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:45:49,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:45:49,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:45:49,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:45:49,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:45:49,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:45:49,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:45:49,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:45:49,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:45:49,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:45:49,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:45:49,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:45:49,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:45:49,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:45:49,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:45:49,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:45:49,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:45:49,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:45:49,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:45:49,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:45:49,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:45:49,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:45:49,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:45:49,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:45:49,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:45:49,605 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:45:49,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:45:49,606 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:45:49,607 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:45:49,607 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:45:49,607 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:45:49,607 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:45:49,607 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:45:49,608 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:45:49,608 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:45:49,608 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:45:49,608 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:45:49,608 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:45:49,609 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:45:49,609 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:45:49,609 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:45:49,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:45:49,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:45:49,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:45:49,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:45:49,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:45:49,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:45:49,611 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:45:49,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:45:49,612 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:45:49,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:45:49,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:45:49,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:45:49,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:45:49,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:45:49,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:45:49,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:45:49,614 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:45:49,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:45:49,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:45:49,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:45:49,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:45:49,615 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71a59a3596571aa79fb44a527a9b6a33b40c9acdae164ed96a4388ebcdf2e0df [2021-11-19 14:45:49,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:45:49,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:45:49,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:45:49,910 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:45:49,911 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:45:49,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2021-11-19 14:45:50,035 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/data/9f13221ad/29e76395d56b4683adec2b0f2e151d5b/FLAG175a47d96 [2021-11-19 14:45:50,985 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:45:50,986 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2021-11-19 14:45:51,044 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/data/9f13221ad/29e76395d56b4683adec2b0f2e151d5b/FLAG175a47d96 [2021-11-19 14:45:51,364 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/data/9f13221ad/29e76395d56b4683adec2b0f2e151d5b [2021-11-19 14:45:51,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:45:51,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:45:51,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:45:51,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:45:51,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:45:51,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:45:51" (1/1) ... [2021-11-19 14:45:51,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1624b18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:51, skipping insertion in model container [2021-11-19 14:45:51,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:45:51" (1/1) ... [2021-11-19 14:45:51,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:45:51,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:45:52,730 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:45:52,854 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:45:52,865 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:45:52,919 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:45:52,925 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:45:52,944 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:45:52,947 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:45:52,962 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:45:52,963 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:45:52,964 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:45:52,970 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:45:52,976 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:45:52,977 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:45:53,801 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311030,311043] [2021-11-19 14:45:53,804 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311196,311209] [2021-11-19 14:45:53,804 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311360,311373] [2021-11-19 14:45:53,805 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311525,311538] [2021-11-19 14:45:53,814 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:45:53,886 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:45:53,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@152146f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:53, skipping insertion in model container [2021-11-19 14:45:53,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:45:53,888 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:45:53,890 INFO L158 Benchmark]: Toolchain (without parser) took 2520.65ms. Allocated memory was 92.3MB in the beginning and 127.9MB in the end (delta: 35.7MB). Free memory was 62.7MB in the beginning and 85.6MB in the end (delta: -22.8MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2021-11-19 14:45:53,895 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory was 63.4MB in the beginning and 63.3MB in the end (delta: 29.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:45:53,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2518.14ms. Allocated memory was 92.3MB in the beginning and 127.9MB in the end (delta: 35.7MB). Free memory was 62.5MB in the beginning and 85.6MB in the end (delta: -23.1MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2021-11-19 14:45:53,901 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory was 63.4MB in the beginning and 63.3MB in the end (delta: 29.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2518.14ms. Allocated memory was 92.3MB in the beginning and 127.9MB in the end (delta: 35.7MB). Free memory was 62.5MB in the beginning and 85.6MB in the end (delta: -23.1MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5469]: 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/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 71a59a3596571aa79fb44a527a9b6a33b40c9acdae164ed96a4388ebcdf2e0df --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:45:56,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:45:56,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:45:56,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:45:56,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:45:56,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:45:56,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:45:56,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:45:56,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:45:56,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:45:56,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:45:56,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:45:56,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:45:56,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:45:56,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:45:56,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:45:56,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:45:56,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:45:56,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:45:56,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:45:56,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:45:56,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:45:56,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:45:56,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:45:56,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:45:56,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:45:56,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:45:56,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:45:56,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:45:56,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:45:56,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:45:56,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:45:56,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:45:56,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:45:56,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:45:56,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:45:56,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:45:56,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:45:56,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:45:56,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:45:56,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:45:56,333 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:45:56,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:45:56,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:45:56,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:45:56,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:45:56,362 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:45:56,362 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:45:56,362 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:45:56,363 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:45:56,363 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:45:56,363 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:45:56,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:45:56,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:45:56,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:45:56,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:45:56,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:45:56,365 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:45:56,365 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:45:56,366 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:45:56,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:45:56,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:45:56,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:45:56,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:45:56,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:45:56,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:45:56,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:45:56,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:45:56,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:45:56,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:45:56,368 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:45:56,369 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:45:56,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:45:56,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:45:56,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:45:56,370 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71a59a3596571aa79fb44a527a9b6a33b40c9acdae164ed96a4388ebcdf2e0df [2021-11-19 14:45:56,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:45:56,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:45:56,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:45:56,778 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:45:56,779 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:45:56,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2021-11-19 14:45:56,855 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/data/9ea495e9f/f3bc79022e8247859e633106264798d1/FLAG7adbc3c3b [2021-11-19 14:45:57,870 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:45:57,871 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2021-11-19 14:45:57,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/data/9ea495e9f/f3bc79022e8247859e633106264798d1/FLAG7adbc3c3b [2021-11-19 14:45:58,367 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/data/9ea495e9f/f3bc79022e8247859e633106264798d1 [2021-11-19 14:45:58,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:45:58,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:45:58,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:45:58,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:45:58,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:45:58,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:45:58" (1/1) ... [2021-11-19 14:45:58,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669d191f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:58, skipping insertion in model container [2021-11-19 14:45:58,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:45:58" (1/1) ... [2021-11-19 14:45:58,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:45:58,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:46:00,775 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311030,311043] [2021-11-19 14:46:00,779 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311196,311209] [2021-11-19 14:46:00,779 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311360,311373] [2021-11-19 14:46:00,780 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311525,311538] [2021-11-19 14:46:00,790 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:46:00,830 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:46:00,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:46:01,188 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311030,311043] [2021-11-19 14:46:01,188 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311196,311209] [2021-11-19 14:46:01,189 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311360,311373] [2021-11-19 14:46:01,190 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311525,311538] [2021-11-19 14:46:01,193 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:46:01,211 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:46:01,660 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311030,311043] [2021-11-19 14:46:01,661 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311196,311209] [2021-11-19 14:46:01,661 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311360,311373] [2021-11-19 14:46:01,662 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_ad6d9c5a-5986-4ba6-a804-f800e57f4124/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311525,311538] [2021-11-19 14:46:01,665 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:46:01,811 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:46:01,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:01 WrapperNode [2021-11-19 14:46:01,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:46:01,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:46:01,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:46:01,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:46:01,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:01" (1/1) ... [2021-11-19 14:46:01,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:01" (1/1) ... [2021-11-19 14:46:02,119 INFO L137 Inliner]: procedures = 304, calls = 1070, calls flagged for inlining = 163, calls inlined = 153, statements flattened = 3316 [2021-11-19 14:46:02,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:46:02,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:46:02,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:46:02,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:46:02,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:01" (1/1) ... [2021-11-19 14:46:02,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:01" (1/1) ... [2021-11-19 14:46:02,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:01" (1/1) ... [2021-11-19 14:46:02,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:01" (1/1) ... [2021-11-19 14:46:02,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:01" (1/1) ... [2021-11-19 14:46:02,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:01" (1/1) ... [2021-11-19 14:46:02,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:01" (1/1) ... [2021-11-19 14:46:02,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:46:02,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:46:02,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:46:02,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:46:02,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:01" (1/1) ... [2021-11-19 14:46:02,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:46:02,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:46:02,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:46:02,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:46:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure show_enabled [2021-11-19 14:46:02,541 INFO L138 BoogieDeclarations]: Found implementation of procedure show_enabled [2021-11-19 14:46:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdevice_notifier [2021-11-19 14:46:02,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdevice_notifier [2021-11-19 14:46:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:46:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:46:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:46:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:46:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:46:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:46:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 14:46:02,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 14:46:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 14:46:02,543 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 14:46:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_mac [2021-11-19 14:46:02,543 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_mac [2021-11-19 14:46:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_put [2021-11-19 14:46:02,544 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_put [2021-11-19 14:46:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_ip [2021-11-19 14:46:02,544 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_ip [2021-11-19 14:46:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:46:02,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:46:02,545 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-19 14:46:02,545 INFO L130 BoogieDeclarations]: Found specification of procedure show_dev_name [2021-11-19 14:46:02,545 INFO L138 BoogieDeclarations]: Found implementation of procedure show_dev_name [2021-11-19 14:46:02,545 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice_notifier [2021-11-19 14:46:02,545 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice_notifier [2021-11-19 14:46:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure drop_netconsole_target [2021-11-19 14:46:02,546 INFO L138 BoogieDeclarations]: Found implementation of procedure drop_netconsole_target [2021-11-19 14:46:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure free_param_target [2021-11-19 14:46:02,546 INFO L138 BoogieDeclarations]: Found implementation of procedure free_param_target [2021-11-19 14:46:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:46:02,547 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:46:02,547 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_get [2021-11-19 14:46:02,547 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_get [2021-11-19 14:46:02,547 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_mac [2021-11-19 14:46:02,547 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_mac [2021-11-19 14:46:02,547 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_ip [2021-11-19 14:46:02,548 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_ip [2021-11-19 14:46:02,548 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-19 14:46:02,548 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-19 14:46:02,548 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-19 14:46:02,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-19 14:46:02,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_netconsole_target [2021-11-19 14:46:02,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_netconsole_target [2021-11-19 14:46:02,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:46:02,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:46:02,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 14:46:02,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 14:46:02,550 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-19 14:46:02,550 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-19 14:46:02,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 14:46:02,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 14:46:02,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-19 14:46:02,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-19 14:46:02,551 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-19 14:46:02,551 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-19 14:46:02,551 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_release [2021-11-19 14:46:02,551 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_release [2021-11-19 14:46:02,552 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_attr_show [2021-11-19 14:46:02,552 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_attr_show [2021-11-19 14:46:02,552 INFO L130 BoogieDeclarations]: Found specification of procedure make_netconsole_target [2021-11-19 14:46:02,552 INFO L138 BoogieDeclarations]: Found implementation of procedure make_netconsole_target [2021-11-19 14:46:02,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:46:02,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:46:02,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:46:02,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:46:02,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:46:02,553 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_cleanup [2021-11-19 14:46:02,553 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_cleanup [2021-11-19 14:46:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_setup [2021-11-19 14:46:02,554 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_setup [2021-11-19 14:46:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 14:46:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:46:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:46:02,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:46:02,555 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-19 14:46:02,555 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-19 14:46:02,555 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-19 14:46:02,555 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-19 14:46:02,555 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-19 14:46:02,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-19 14:46:02,556 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-19 14:46:02,556 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-19 14:46:02,556 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_port [2021-11-19 14:46:02,556 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_port [2021-11-19 14:46:02,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 14:46:02,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 14:46:02,557 INFO L130 BoogieDeclarations]: Found specification of procedure strnchr [2021-11-19 14:46:02,557 INFO L138 BoogieDeclarations]: Found implementation of procedure strnchr [2021-11-19 14:46:02,557 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtou16 [2021-11-19 14:46:02,557 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtou16 [2021-11-19 14:46:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-19 14:46:02,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-19 14:46:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 14:46:02,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 14:46:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-19 14:46:02,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-19 14:46:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure store_enabled [2021-11-19 14:46:02,559 INFO L138 BoogieDeclarations]: Found implementation of procedure store_enabled [2021-11-19 14:46:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_ip [2021-11-19 14:46:02,559 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_ip [2021-11-19 14:46:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-19 14:46:02,560 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2021-11-19 14:46:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cleanup_netconsole_14_2 [2021-11-19 14:46:02,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cleanup_netconsole_14_2 [2021-11-19 14:46:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 14:46:02,560 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 14:46:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure to_target [2021-11-19 14:46:02,561 INFO L138 BoogieDeclarations]: Found implementation of procedure to_target [2021-11-19 14:46:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-19 14:46:02,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-19 14:46:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure config_item_put [2021-11-19 14:46:02,562 INFO L138 BoogieDeclarations]: Found implementation of procedure config_item_put [2021-11-19 14:46:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:46:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:46:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_mac [2021-11-19 14:46:02,562 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_mac [2021-11-19 14:46:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:46:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:46:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure in6_pton [2021-11-19 14:46:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure in6_pton [2021-11-19 14:46:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:46:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 14:46:02,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 14:46:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:46:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 14:46:02,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 14:46:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:46:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-19 14:46:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure store_local_ip [2021-11-19 14:46:02,565 INFO L138 BoogieDeclarations]: Found implementation of procedure store_local_ip [2021-11-19 14:46:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:46:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:46:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:46:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure in_aton [2021-11-19 14:46:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure in_aton [2021-11-19 14:46:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 14:46:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 14:46:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-19 14:46:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-19 14:46:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure store_dev_name [2021-11-19 14:46:02,567 INFO L138 BoogieDeclarations]: Found implementation of procedure store_dev_name [2021-11-19 14:46:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_port [2021-11-19 14:46:02,567 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_port [2021-11-19 14:46:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_attr_store [2021-11-19 14:46:02,567 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_attr_store [2021-11-19 14:46:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:46:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure store_local_port [2021-11-19 14:46:02,568 INFO L138 BoogieDeclarations]: Found implementation of procedure store_local_port [2021-11-19 14:46:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 14:46:02,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 14:46:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure config_item_name [2021-11-19 14:46:02,569 INFO L138 BoogieDeclarations]: Found implementation of procedure config_item_name [2021-11-19 14:46:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_port [2021-11-19 14:46:02,569 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_port [2021-11-19 14:46:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:46:02,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:46:03,341 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:46:03,354 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:46:03,571 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 14:46:14,760 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 14:46:14,847 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:46:14,883 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:46:14,883 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-19 14:46:14,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:46:14 BoogieIcfgContainer [2021-11-19 14:46:14,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:46:14,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:46:14,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:46:14,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:46:14,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:45:58" (1/3) ... [2021-11-19 14:46:14,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ecdf5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:46:14, skipping insertion in model container [2021-11-19 14:46:14,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:01" (2/3) ... [2021-11-19 14:46:14,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ecdf5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:46:14, skipping insertion in model container [2021-11-19 14:46:14,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:46:14" (3/3) ... [2021-11-19 14:46:14,897 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2021-11-19 14:46:14,903 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:46:14,903 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 14:46:14,987 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:46:14,994 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:46:14,995 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 14:46:15,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 1379 states, 922 states have (on average 1.262472885032538) internal successors, (1164), 931 states have internal predecessors, (1164), 392 states have call successors, (392), 63 states have call predecessors, (392), 62 states have return successors, (387), 387 states have call predecessors, (387), 387 states have call successors, (387) [2021-11-19 14:46:15,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 843 [2021-11-19 14:46:15,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:15,216 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:15,216 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:46:15,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:15,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1919231487, now seen corresponding path program 1 times [2021-11-19 14:46:15,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:15,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256723118] [2021-11-19 14:46:15,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:15,255 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:15,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:15,260 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:15,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:46:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:17,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 2571 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:46:17,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 24309 trivial. 0 not checked. [2021-11-19 14:46:19,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24531 trivial. 0 not checked. [2021-11-19 14:46:21,436 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:21,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256723118] [2021-11-19 14:46:21,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256723118] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:21,443 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:21,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:46:21,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131271511] [2021-11-19 14:46:21,448 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:21,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:46:21,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:21,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:46:21,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:46:21,509 INFO L87 Difference]: Start difference. First operand has 1379 states, 922 states have (on average 1.262472885032538) internal successors, (1164), 931 states have internal predecessors, (1164), 392 states have call successors, (392), 63 states have call predecessors, (392), 62 states have return successors, (387), 387 states have call predecessors, (387), 387 states have call successors, (387) Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (79), 4 states have call predecessors, (79), 4 states have call successors, (79) [2021-11-19 14:46:23,675 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 14:46:28,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:28,741 INFO L93 Difference]: Finished difference Result 4642 states and 6562 transitions. [2021-11-19 14:46:28,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:46:28,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (79), 4 states have call predecessors, (79), 4 states have call successors, (79) Word has length 842 [2021-11-19 14:46:28,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:28,795 INFO L225 Difference]: With dead ends: 4642 [2021-11-19 14:46:28,796 INFO L226 Difference]: Without dead ends: 3401 [2021-11-19 14:46:28,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1682 GetRequests, 1680 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:46:28,812 INFO L933 BasicCegarLoop]: 2447 mSDtfsCounter, 4246 mSDsluCounter, 2455 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 600 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4246 SdHoareTripleChecker+Valid, 4902 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:28,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4246 Valid, 4902 Invalid, 1362 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [600 Valid, 761 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2021-11-19 14:46:28,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2021-11-19 14:46:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 3383. [2021-11-19 14:46:29,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3383 states, 2294 states have (on average 1.2663469921534438) internal successors, (2905), 2315 states have internal predecessors, (2905), 912 states have call successors, (912), 175 states have call predecessors, (912), 174 states have return successors, (908), 908 states have call predecessors, (908), 908 states have call successors, (908) [2021-11-19 14:46:29,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3383 states to 3383 states and 4725 transitions. [2021-11-19 14:46:29,189 INFO L78 Accepts]: Start accepts. Automaton has 3383 states and 4725 transitions. Word has length 842 [2021-11-19 14:46:29,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:29,196 INFO L470 AbstractCegarLoop]: Abstraction has 3383 states and 4725 transitions. [2021-11-19 14:46:29,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (79), 4 states have call predecessors, (79), 4 states have call successors, (79) [2021-11-19 14:46:29,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3383 states and 4725 transitions. [2021-11-19 14:46:29,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2021-11-19 14:46:29,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:29,240 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 74, 74, 74, 74, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:29,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:29,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:29,455 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:46:29,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:29,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1754222456, now seen corresponding path program 1 times [2021-11-19 14:46:29,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:29,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442059293] [2021-11-19 14:46:29,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:29,460 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:29,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:29,464 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:29,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:46:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:31,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:46:31,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:33,216 INFO L134 CoverageAnalysis]: Checked inductivity of 24535 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 24313 trivial. 0 not checked. [2021-11-19 14:46:33,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 24535 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24535 trivial. 0 not checked. [2021-11-19 14:46:34,961 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:34,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442059293] [2021-11-19 14:46:34,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442059293] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:34,964 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:34,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:46:34,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806996283] [2021-11-19 14:46:34,965 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:34,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:46:34,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:34,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:46:34,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:46:34,972 INFO L87 Difference]: Start difference. First operand 3383 states and 4725 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2021-11-19 14:46:37,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:37,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:37,572 INFO L93 Difference]: Finished difference Result 8751 states and 12146 transitions. [2021-11-19 14:46:37,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:46:37,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) Word has length 876 [2021-11-19 14:46:37,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:37,629 INFO L225 Difference]: With dead ends: 8751 [2021-11-19 14:46:37,629 INFO L226 Difference]: Without dead ends: 5521 [2021-11-19 14:46:37,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1750 GetRequests, 1749 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:46:37,652 INFO L933 BasicCegarLoop]: 2183 mSDtfsCounter, 1547 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 4019 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:37,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 4019 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 14:46:37,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5521 states. [2021-11-19 14:46:37,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5521 to 5500. [2021-11-19 14:46:37,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5500 states, 3750 states have (on average 1.2656) internal successors, (4746), 3787 states have internal predecessors, (4746), 1435 states have call successors, (1435), 313 states have call predecessors, (1435), 312 states have return successors, (1431), 1426 states have call predecessors, (1431), 1431 states have call successors, (1431) [2021-11-19 14:46:38,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5500 states to 5500 states and 7612 transitions. [2021-11-19 14:46:38,017 INFO L78 Accepts]: Start accepts. Automaton has 5500 states and 7612 transitions. Word has length 876 [2021-11-19 14:46:38,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:38,020 INFO L470 AbstractCegarLoop]: Abstraction has 5500 states and 7612 transitions. [2021-11-19 14:46:38,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2021-11-19 14:46:38,021 INFO L276 IsEmpty]: Start isEmpty. Operand 5500 states and 7612 transitions. [2021-11-19 14:46:38,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2021-11-19 14:46:38,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:38,061 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 74, 74, 74, 74, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:38,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:38,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:38,292 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:46:38,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:38,292 INFO L85 PathProgramCache]: Analyzing trace with hash 895039550, now seen corresponding path program 1 times [2021-11-19 14:46:38,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:38,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404505101] [2021-11-19 14:46:38,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:38,295 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:38,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:38,303 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:38,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:46:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:40,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:46:40,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 24535 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 24313 trivial. 0 not checked. [2021-11-19 14:46:41,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:43,548 INFO L134 CoverageAnalysis]: Checked inductivity of 24535 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24535 trivial. 0 not checked. [2021-11-19 14:46:43,549 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:43,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404505101] [2021-11-19 14:46:43,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404505101] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:43,550 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:43,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:46:43,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527019449] [2021-11-19 14:46:43,551 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:43,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:46:43,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:43,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:46:43,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:46:43,555 INFO L87 Difference]: Start difference. First operand 5500 states and 7612 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2021-11-19 14:46:45,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:46,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:46,253 INFO L93 Difference]: Finished difference Result 15059 states and 20744 transitions. [2021-11-19 14:46:46,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:46:46,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) Word has length 880 [2021-11-19 14:46:46,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:46,343 INFO L225 Difference]: With dead ends: 15059 [2021-11-19 14:46:46,343 INFO L226 Difference]: Without dead ends: 9712 [2021-11-19 14:46:46,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1758 GetRequests, 1757 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:46:46,381 INFO L933 BasicCegarLoop]: 2215 mSDtfsCounter, 1547 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 4055 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:46,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 4055 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:46:46,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9712 states. [2021-11-19 14:46:47,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9712 to 9683. [2021-11-19 14:46:47,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9683 states, 6630 states have (on average 1.2647058823529411) internal successors, (8385), 6699 states have internal predecessors, (8385), 2462 states have call successors, (2462), 589 states have call predecessors, (2462), 588 states have return successors, (2458), 2443 states have call predecessors, (2458), 2458 states have call successors, (2458) [2021-11-19 14:46:47,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9683 states to 9683 states and 13305 transitions. [2021-11-19 14:46:47,198 INFO L78 Accepts]: Start accepts. Automaton has 9683 states and 13305 transitions. Word has length 880 [2021-11-19 14:46:47,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:47,200 INFO L470 AbstractCegarLoop]: Abstraction has 9683 states and 13305 transitions. [2021-11-19 14:46:47,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2021-11-19 14:46:47,201 INFO L276 IsEmpty]: Start isEmpty. Operand 9683 states and 13305 transitions. [2021-11-19 14:46:47,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2021-11-19 14:46:47,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:47,215 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 74, 74, 74, 74, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:47,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:47,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:47,439 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:46:47,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:47,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1569509987, now seen corresponding path program 1 times [2021-11-19 14:46:47,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:47,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983044551] [2021-11-19 14:46:47,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:47,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:47,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:47,446 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:47,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:46:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:49,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:46:49,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 24535 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 24313 trivial. 0 not checked. [2021-11-19 14:46:50,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 24535 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24535 trivial. 0 not checked. [2021-11-19 14:46:52,567 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:52,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983044551] [2021-11-19 14:46:52,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983044551] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:52,567 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:52,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:46:52,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246475006] [2021-11-19 14:46:52,568 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:52,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:46:52,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:52,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:46:52,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:46:52,572 INFO L87 Difference]: Start difference. First operand 9683 states and 13305 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2021-11-19 14:46:54,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:55,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:55,644 INFO L93 Difference]: Finished difference Result 27451 states and 37596 transitions. [2021-11-19 14:46:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:46:55,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) Word has length 878 [2021-11-19 14:46:55,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:55,796 INFO L225 Difference]: With dead ends: 27451 [2021-11-19 14:46:55,796 INFO L226 Difference]: Without dead ends: 17921 [2021-11-19 14:46:55,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1754 GetRequests, 1753 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:46:55,857 INFO L933 BasicCegarLoop]: 2277 mSDtfsCounter, 1547 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 4115 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:55,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 4115 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:46:56,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17921 states. [2021-11-19 14:46:57,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17921 to 17896. [2021-11-19 14:46:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17896 states, 12294 states have (on average 1.2635431918008784) internal successors, (15534), 12427 states have internal predecessors, (15534), 4459 states have call successors, (4459), 1141 states have call predecessors, (4459), 1140 states have return successors, (4455), 4420 states have call predecessors, (4455), 4455 states have call successors, (4455) [2021-11-19 14:46:57,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17896 states to 17896 states and 24448 transitions. [2021-11-19 14:46:57,344 INFO L78 Accepts]: Start accepts. Automaton has 17896 states and 24448 transitions. Word has length 878 [2021-11-19 14:46:57,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:57,346 INFO L470 AbstractCegarLoop]: Abstraction has 17896 states and 24448 transitions. [2021-11-19 14:46:57,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2021-11-19 14:46:57,347 INFO L276 IsEmpty]: Start isEmpty. Operand 17896 states and 24448 transitions. [2021-11-19 14:46:57,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2021-11-19 14:46:57,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:57,360 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 74, 74, 74, 74, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:57,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:57,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:57,583 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:46:57,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:57,584 INFO L85 PathProgramCache]: Analyzing trace with hash 192711533, now seen corresponding path program 1 times [2021-11-19 14:46:57,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:57,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558021772] [2021-11-19 14:46:57,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:57,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:57,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:57,588 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:57,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:46:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:59,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 2696 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:46:59,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 24535 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 24313 trivial. 0 not checked. [2021-11-19 14:47:00,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 24535 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24535 trivial. 0 not checked. [2021-11-19 14:47:02,428 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:02,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558021772] [2021-11-19 14:47:02,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558021772] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:02,429 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:02,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:47:02,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491741699] [2021-11-19 14:47:02,430 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:02,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:47:02,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:02,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:47:02,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:47:02,431 INFO L87 Difference]: Start difference. First operand 17896 states and 24448 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2021-11-19 14:47:04,528 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:05,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:05,970 INFO L93 Difference]: Finished difference Result 51731 states and 70496 transitions. [2021-11-19 14:47:05,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:47:05,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) Word has length 877 [2021-11-19 14:47:05,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:06,167 INFO L225 Difference]: With dead ends: 51731 [2021-11-19 14:47:06,167 INFO L226 Difference]: Without dead ends: 33988 [2021-11-19 14:47:06,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1752 GetRequests, 1751 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:47:06,244 INFO L933 BasicCegarLoop]: 2339 mSDtfsCounter, 1547 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 4176 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:06,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 4176 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 14:47:06,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33988 states. [2021-11-19 14:47:08,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33988 to 33965. [2021-11-19 14:47:08,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33965 states, 23398 states have (on average 1.2621164202068553) internal successors, (29531), 23659 states have internal predecessors, (29531), 8320 states have call successors, (8320), 2245 states have call predecessors, (8320), 2244 states have return successors, (8316), 8241 states have call predecessors, (8316), 8316 states have call successors, (8316) [2021-11-19 14:47:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33965 states to 33965 states and 46167 transitions. [2021-11-19 14:47:08,603 INFO L78 Accepts]: Start accepts. Automaton has 33965 states and 46167 transitions. Word has length 877 [2021-11-19 14:47:08,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:08,605 INFO L470 AbstractCegarLoop]: Abstraction has 33965 states and 46167 transitions. [2021-11-19 14:47:08,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2021-11-19 14:47:08,606 INFO L276 IsEmpty]: Start isEmpty. Operand 33965 states and 46167 transitions. [2021-11-19 14:47:08,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2021-11-19 14:47:08,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:08,623 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 74, 74, 74, 74, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:08,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:08,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:08,843 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:47:08,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:08,844 INFO L85 PathProgramCache]: Analyzing trace with hash 436872050, now seen corresponding path program 1 times [2021-11-19 14:47:08,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:08,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237669949] [2021-11-19 14:47:08,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:08,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:08,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:08,848 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:08,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:47:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:10,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 2694 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:47:10,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:12,205 INFO L134 CoverageAnalysis]: Checked inductivity of 24535 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 24313 trivial. 0 not checked. [2021-11-19 14:47:12,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 24535 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24535 trivial. 0 not checked. [2021-11-19 14:47:13,685 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:13,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237669949] [2021-11-19 14:47:13,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237669949] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:13,686 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:13,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:47:13,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444660277] [2021-11-19 14:47:13,687 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:13,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:47:13,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:13,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:47:13,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:47:13,688 INFO L87 Difference]: Start difference. First operand 33965 states and 46167 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2021-11-19 14:47:15,801 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:18,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:18,441 INFO L93 Difference]: Finished difference Result 99169 states and 134514 transitions. [2021-11-19 14:47:18,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:47:18,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) Word has length 875 [2021-11-19 14:47:18,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:19,033 INFO L225 Difference]: With dead ends: 99169 [2021-11-19 14:47:19,033 INFO L226 Difference]: Without dead ends: 65357 [2021-11-19 14:47:19,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1748 GetRequests, 1747 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:47:19,157 INFO L933 BasicCegarLoop]: 2308 mSDtfsCounter, 1547 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 4143 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:19,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 4143 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 14:47:19,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65357 states. [2021-11-19 14:47:22,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65357 to 65338. [2021-11-19 14:47:22,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65338 states, 45126 states have (on average 1.2604706820901477) internal successors, (56880), 45643 states have internal predecessors, (56880), 15757 states have call successors, (15757), 4453 states have call predecessors, (15757), 4452 states have return successors, (15753), 15598 states have call predecessors, (15753), 15753 states have call successors, (15753) [2021-11-19 14:47:23,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65338 states to 65338 states and 88390 transitions. [2021-11-19 14:47:23,476 INFO L78 Accepts]: Start accepts. Automaton has 65338 states and 88390 transitions. Word has length 875 [2021-11-19 14:47:23,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:23,478 INFO L470 AbstractCegarLoop]: Abstraction has 65338 states and 88390 transitions. [2021-11-19 14:47:23,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2021-11-19 14:47:23,483 INFO L276 IsEmpty]: Start isEmpty. Operand 65338 states and 88390 transitions. [2021-11-19 14:47:23,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2021-11-19 14:47:23,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:23,512 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 74, 74, 74, 74, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:23,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:23,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:23,739 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:47:23,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:23,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1842991256, now seen corresponding path program 1 times [2021-11-19 14:47:23,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:23,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815828000] [2021-11-19 14:47:23,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:23,742 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:23,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:23,743 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:23,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:47:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:25,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 2698 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:47:25,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 24535 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 24313 trivial. 0 not checked. [2021-11-19 14:47:26,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 24535 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24535 trivial. 0 not checked. [2021-11-19 14:47:28,593 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:28,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815828000] [2021-11-19 14:47:28,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815828000] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:28,594 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:28,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:47:28,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012470536] [2021-11-19 14:47:28,594 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:28,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:47:28,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:28,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:47:28,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:47:28,596 INFO L87 Difference]: Start difference. First operand 65338 states and 88390 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2021-11-19 14:47:30,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:35,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:35,462 INFO L93 Difference]: Finished difference Result 191715 states and 258840 transitions. [2021-11-19 14:47:35,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:47:35,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) Word has length 879 [2021-11-19 14:47:35,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:36,319 INFO L225 Difference]: With dead ends: 191715 [2021-11-19 14:47:36,319 INFO L226 Difference]: Without dead ends: 126530 [2021-11-19 14:47:36,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1756 GetRequests, 1755 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:47:36,587 INFO L933 BasicCegarLoop]: 2492 mSDtfsCounter, 1547 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 4331 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:36,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 4331 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 14:47:36,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126530 states. [2021-11-19 14:47:42,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126530 to 126503. [2021-11-19 14:47:43,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126503 states, 87590 states have (on average 1.25864824751684) internal successors, (110245), 88619 states have internal predecessors, (110245), 30042 states have call successors, (30042), 8869 states have call predecessors, (30042), 8868 states have return successors, (30038), 29723 states have call predecessors, (30038), 30038 states have call successors, (30038) [2021-11-19 14:47:43,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126503 states to 126503 states and 170325 transitions. [2021-11-19 14:47:43,798 INFO L78 Accepts]: Start accepts. Automaton has 126503 states and 170325 transitions. Word has length 879 [2021-11-19 14:47:43,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:43,799 INFO L470 AbstractCegarLoop]: Abstraction has 126503 states and 170325 transitions. [2021-11-19 14:47:43,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2021-11-19 14:47:43,800 INFO L276 IsEmpty]: Start isEmpty. Operand 126503 states and 170325 transitions. [2021-11-19 14:47:43,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2021-11-19 14:47:43,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:43,816 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 74, 74, 74, 74, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:43,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:44,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:44,032 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:47:44,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:44,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1943331353, now seen corresponding path program 1 times [2021-11-19 14:47:44,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:44,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734452057] [2021-11-19 14:47:44,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:44,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:44,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:44,038 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:44,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6d9c5a-5986-4ba6-a804-f800e57f4124/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:47:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:45,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:47:46,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 24535 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 24313 trivial. 0 not checked. [2021-11-19 14:47:47,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:49,652 INFO L134 CoverageAnalysis]: Checked inductivity of 24535 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24535 trivial. 0 not checked. [2021-11-19 14:47:49,652 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:49,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734452057] [2021-11-19 14:47:49,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734452057] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:49,653 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:49,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:47:49,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456092447] [2021-11-19 14:47:49,654 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:49,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:47:49,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:49,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:47:49,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:47:49,657 INFO L87 Difference]: Start difference. First operand 126503 states and 170325 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2021-11-19 14:47:51,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:00,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:48:00,415 INFO L93 Difference]: Finished difference Result 372003 states and 499868 transitions. [2021-11-19 14:48:00,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:48:00,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) Word has length 882 [2021-11-19 14:48:00,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:48:01,861 INFO L225 Difference]: With dead ends: 372003 [2021-11-19 14:48:01,861 INFO L226 Difference]: Without dead ends: 245653 [2021-11-19 14:48:02,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1762 GetRequests, 1761 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:48:02,338 INFO L933 BasicCegarLoop]: 2555 mSDtfsCounter, 1547 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 4397 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:48:02,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 4397 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:48:02,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245653 states.