./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/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 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:01:23,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:01:23,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:01:23,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:01:23,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:01:23,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:01:23,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:01:23,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:01:23,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:01:23,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:01:23,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:01:23,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:01:23,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:01:23,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:01:23,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:01:23,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:01:23,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:01:23,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:01:23,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:01:23,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:01:23,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:01:23,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:01:23,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:01:23,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:01:23,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:01:23,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:01:23,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:01:23,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:01:23,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:01:23,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:01:23,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:01:23,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:01:23,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:01:23,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:01:23,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:01:23,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:01:23,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:01:23,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:01:23,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:01:23,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:01:23,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:01:23,835 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:01:23,887 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:01:23,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:01:23,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:01:23,888 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:01:23,889 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:01:23,889 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:01:23,889 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:01:23,889 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:01:23,890 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:01:23,890 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:01:23,890 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:01:23,890 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:01:23,891 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:01:23,891 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:01:23,891 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:01:23,891 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:01:23,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:01:23,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:01:23,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:01:23,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:01:23,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:01:23,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:01:23,904 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:01:23,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:01:23,904 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:01:23,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:01:23,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:01:23,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:01:23,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:01:23,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:01:23,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:01:23,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:01:23,906 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:01:23,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:01:23,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:01:23,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:01:23,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:01:23,908 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b [2021-11-19 14:01:24,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:01:24,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:01:24,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:01:24,245 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:01:24,246 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:01:24,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2021-11-19 14:01:24,335 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/data/de457b46b/b76ad73a00574846bc5e08a1cf01276f/FLAG849145020 [2021-11-19 14:01:25,294 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:01:25,295 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2021-11-19 14:01:25,369 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/data/de457b46b/b76ad73a00574846bc5e08a1cf01276f/FLAG849145020 [2021-11-19 14:01:25,647 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/data/de457b46b/b76ad73a00574846bc5e08a1cf01276f [2021-11-19 14:01:25,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:01:25,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:01:25,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:01:25,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:01:25,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:01:25,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:01:25" (1/1) ... [2021-11-19 14:01:25,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2deadb0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:25, skipping insertion in model container [2021-11-19 14:01:25,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:01:25" (1/1) ... [2021-11-19 14:01:25,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:01:25,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:01:27,906 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 14:01:27,909 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 14:01:28,972 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2021-11-19 14:01:28,976 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2021-11-19 14:01:28,977 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2021-11-19 14:01:28,978 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2021-11-19 14:01:29,001 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:01:29,068 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 14:01:29,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4273611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:29, skipping insertion in model container [2021-11-19 14:01:29,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:01:29,069 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:01:29,071 INFO L158 Benchmark]: Toolchain (without parser) took 3418.87ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 57.7MB in the beginning and 65.3MB in the end (delta: -7.6MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2021-11-19 14:01:29,072 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:01:29,073 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3416.08ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 57.5MB in the beginning and 65.3MB in the end (delta: -7.8MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2021-11-19 14:01:29,075 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3416.08ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 57.5MB in the beginning and 65.3MB in the end (delta: -7.8MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5889]: 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/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 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:01:31,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:01:31,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:01:31,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:01:31,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:01:31,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:01:31,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:01:31,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:01:31,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:01:31,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:01:31,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:01:31,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:01:31,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:01:31,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:01:31,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:01:31,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:01:31,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:01:31,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:01:31,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:01:31,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:01:31,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:01:31,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:01:31,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:01:31,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:01:31,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:01:31,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:01:31,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:01:31,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:01:31,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:01:31,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:01:31,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:01:31,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:01:31,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:01:31,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:01:31,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:01:31,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:01:31,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:01:31,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:01:31,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:01:31,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:01:31,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:01:31,811 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:01:31,838 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:01:31,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:01:31,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:01:31,840 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:01:31,840 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:01:31,840 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:01:31,841 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:01:31,841 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:01:31,841 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:01:31,841 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:01:31,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:01:31,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:01:31,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:01:31,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:01:31,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:01:31,843 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:01:31,844 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:01:31,844 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:01:31,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:01:31,844 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:01:31,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:01:31,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:01:31,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:01:31,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:01:31,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:01:31,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:01:31,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:01:31,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:01:31,846 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:01:31,847 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:01:31,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:01:31,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:01:31,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:01:31,847 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b [2021-11-19 14:01:32,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:01:32,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:01:32,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:01:32,326 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:01:32,327 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:01:32,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2021-11-19 14:01:32,419 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/data/10a9a697c/6556a8c2c5bd462184dfec2447c0753c/FLAG08c5bdd57 [2021-11-19 14:01:33,599 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:01:33,601 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2021-11-19 14:01:33,676 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/data/10a9a697c/6556a8c2c5bd462184dfec2447c0753c/FLAG08c5bdd57 [2021-11-19 14:01:33,901 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/data/10a9a697c/6556a8c2c5bd462184dfec2447c0753c [2021-11-19 14:01:33,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:01:33,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:01:33,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:01:33,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:01:33,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:01:33,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:01:33" (1/1) ... [2021-11-19 14:01:33,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d8a9573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:33, skipping insertion in model container [2021-11-19 14:01:33,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:01:33" (1/1) ... [2021-11-19 14:01:33,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:01:34,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:01:37,128 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2021-11-19 14:01:37,131 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2021-11-19 14:01:37,132 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2021-11-19 14:01:37,133 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2021-11-19 14:01:37,153 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:01:37,229 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:01:37,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:01:37,703 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2021-11-19 14:01:37,703 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2021-11-19 14:01:37,704 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2021-11-19 14:01:37,705 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2021-11-19 14:01:37,711 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:01:37,784 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:01:38,354 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2021-11-19 14:01:38,355 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2021-11-19 14:01:38,355 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2021-11-19 14:01:38,356 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_a65dea31-037b-4a7f-b7ad-4f6881b5d106/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2021-11-19 14:01:38,368 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:01:38,769 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:01:38,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:38 WrapperNode [2021-11-19 14:01:38,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:01:38,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:01:38,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:01:38,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:01:38,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:38" (1/1) ... [2021-11-19 14:01:38,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:38" (1/1) ... [2021-11-19 14:01:39,165 INFO L137 Inliner]: procedures = 385, calls = 2171, calls flagged for inlining = 172, calls inlined = 152, statements flattened = 3964 [2021-11-19 14:01:39,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:01:39,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:01:39,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:01:39,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:01:39,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:38" (1/1) ... [2021-11-19 14:01:39,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:38" (1/1) ... [2021-11-19 14:01:39,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:38" (1/1) ... [2021-11-19 14:01:39,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:38" (1/1) ... [2021-11-19 14:01:39,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:38" (1/1) ... [2021-11-19 14:01:39,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:38" (1/1) ... [2021-11-19 14:01:39,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:38" (1/1) ... [2021-11-19 14:01:39,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:01:39,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:01:39,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:01:39,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:01:39,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:38" (1/1) ... [2021-11-19 14:01:39,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:01:39,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:01:39,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:01:39,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:01:39,591 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~X~$Pointer$~X~C_INT~TO~VOID [2021-11-19 14:01:39,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~X~$Pointer$~X~C_INT~TO~VOID [2021-11-19 14:01:39,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_page_lock_of_ei_device [2021-11-19 14:01:39,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_page_lock_of_ei_device [2021-11-19 14:01:39,593 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_detach [2021-11-19 14:01:39,593 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_detach [2021-11-19 14:01:39,593 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 14:01:39,593 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 14:01:39,593 INFO L130 BoogieDeclarations]: Found specification of procedure AX88190_init [2021-11-19 14:01:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure AX88190_init [2021-11-19 14:01:39,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:01:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:01:39,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_70 [2021-11-19 14:01:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_70 [2021-11-19 14:01:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:01:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:01:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure ei_receive [2021-11-19 14:01:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_receive [2021-11-19 14:01:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_release [2021-11-19 14:01:39,596 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_release [2021-11-19 14:01:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_write_config_byte [2021-11-19 14:01:39,596 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_write_config_byte [2021-11-19 14:01:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 14:01:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 14:01:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2021-11-19 14:01:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2021-11-19 14:01:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 14:01:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 14:01:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure NS8390_trigger_send [2021-11-19 14:01:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure NS8390_trigger_send [2021-11-19 14:01:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:01:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 14:01:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:01:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:01:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:01:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 14:01:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 14:01:39,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 14:01:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 14:01:39,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-19 14:01:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-19 14:01:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 14:01:39,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 14:01:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_tx_timeout [2021-11-19 14:01:39,604 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_tx_timeout [2021-11-19 14:01:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:01:39,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:01:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:01:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2021-11-19 14:01:39,605 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2021-11-19 14:01:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 14:01:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 14:01:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:01:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 14:01:39,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 14:01:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 14:01:39,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 14:01:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:01:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:01:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:01:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:01:39,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:01:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:01:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-19 14:01:39,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-19 14:01:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2021-11-19 14:01:39,610 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2021-11-19 14:01:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure do_set_multicast_list [2021-11-19 14:01:39,611 INFO L138 BoogieDeclarations]: Found implementation of procedure do_set_multicast_list [2021-11-19 14:01:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:01:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-19 14:01:39,611 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-19 14:01:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:01:39,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:01:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:01:39,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:01:39,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:01:39,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:01:39,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:01:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:01:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 14:01:39,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 14:01:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:01:39,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:01:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2021-11-19 14:01:39,616 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2021-11-19 14:01:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-19 14:01:39,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-19 14:01:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:01:39,616 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:01:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_axnet_cs_driver_exit_14_2 [2021-11-19 14:01:39,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_axnet_cs_driver_exit_14_2 [2021-11-19 14:01:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 14:01:39,617 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 14:01:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure insw [2021-11-19 14:01:39,617 INFO L138 BoogieDeclarations]: Found implementation of procedure insw [2021-11-19 14:01:39,618 INFO L130 BoogieDeclarations]: Found specification of procedure PRIV [2021-11-19 14:01:39,618 INFO L138 BoogieDeclarations]: Found implementation of procedure PRIV [2021-11-19 14:01:39,618 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-19 14:01:39,619 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-19 14:01:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:01:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-19 14:01:39,620 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-19 14:01:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:01:39,670 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-19 14:01:39,671 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-19 14:01:39,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:01:39,671 INFO L130 BoogieDeclarations]: Found specification of procedure ei_tx_intr [2021-11-19 14:01:39,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_tx_intr [2021-11-19 14:01:39,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:01:39,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:01:39,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:01:39,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:01:39,672 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 14:01:39,672 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 14:01:39,672 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-19 14:01:39,672 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-19 14:01:39,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 14:01:39,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 14:01:39,672 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2021-11-19 14:01:39,672 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2021-11-19 14:01:39,672 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 14:01:39,672 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 14:01:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure ei_irq_wrapper [2021-11-19 14:01:39,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_irq_wrapper [2021-11-19 14:01:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 14:01:39,673 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 14:01:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:01:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:01:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:01:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:01:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:01:39,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:01:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_reset_8390 [2021-11-19 14:01:39,674 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_reset_8390 [2021-11-19 14:01:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_cs_driver_exit [2021-11-19 14:01:39,674 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_cs_driver_exit [2021-11-19 14:01:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 14:01:39,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 14:01:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-19 14:01:39,674 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-19 14:01:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 14:01:39,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 14:01:40,655 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:01:40,663 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:01:44,334 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 14:02:17,879 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 14:02:17,995 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:02:18,012 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:02:18,012 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:02:18,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:02:18 BoogieIcfgContainer [2021-11-19 14:02:18,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:02:18,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:02:18,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:02:18,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:02:18,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:01:33" (1/3) ... [2021-11-19 14:02:18,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1767864b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:02:18, skipping insertion in model container [2021-11-19 14:02:18,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:38" (2/3) ... [2021-11-19 14:02:18,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1767864b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:02:18, skipping insertion in model container [2021-11-19 14:02:18,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:02:18" (3/3) ... [2021-11-19 14:02:18,025 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2021-11-19 14:02:18,031 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:02:18,031 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 14:02:18,092 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:02:18,099 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 14:02:18,099 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 14:02:18,146 INFO L276 IsEmpty]: Start isEmpty. Operand has 1254 states, 829 states have (on average 1.2943305186972256) internal successors, (1073), 853 states have internal predecessors, (1073), 368 states have call successors, (368), 56 states have call predecessors, (368), 55 states have return successors, (362), 354 states have call predecessors, (362), 362 states have call successors, (362) [2021-11-19 14:02:18,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-19 14:02:18,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:18,162 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:18,163 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:02:18,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:18,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1510001670, now seen corresponding path program 1 times [2021-11-19 14:02:18,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:18,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466128667] [2021-11-19 14:02:18,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:18,188 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:18,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:18,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:18,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:02:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:19,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 2159 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:02:19,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-11-19 14:02:20,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-19 14:02:20,491 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:20,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466128667] [2021-11-19 14:02:20,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466128667] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:20,492 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:20,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:02:20,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118445610] [2021-11-19 14:02:20,495 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:20,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:02:20,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:20,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:02:20,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:02:20,530 INFO L87 Difference]: Start difference. First operand has 1254 states, 829 states have (on average 1.2943305186972256) internal successors, (1073), 853 states have internal predecessors, (1073), 368 states have call successors, (368), 56 states have call predecessors, (368), 55 states have return successors, (362), 354 states have call predecessors, (362), 362 states have call successors, (362) Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-19 14:02:22,847 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 14:02:29,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:29,423 INFO L93 Difference]: Finished difference Result 4806 states and 7030 transitions. [2021-11-19 14:02:29,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:02:29,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 105 [2021-11-19 14:02:29,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:29,475 INFO L225 Difference]: With dead ends: 4806 [2021-11-19 14:02:29,476 INFO L226 Difference]: Without dead ends: 3554 [2021-11-19 14:02:29,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 206 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 14:02:29,495 INFO L933 BasicCegarLoop]: 2475 mSDtfsCounter, 4398 mSDsluCounter, 2703 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 675 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4398 SdHoareTripleChecker+Valid, 5178 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 675 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:29,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4398 Valid, 5178 Invalid, 1428 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [675 Valid, 752 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2021-11-19 14:02:29,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2021-11-19 14:02:29,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 3528. [2021-11-19 14:02:29,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 2362 states have (on average 1.2925486875529213) internal successors, (3053), 2427 states have internal predecessors, (3053), 1005 states have call successors, (1005), 159 states have call predecessors, (1005), 158 states have return successors, (1001), 977 states have call predecessors, (1001), 1001 states have call successors, (1001) [2021-11-19 14:02:29,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 5059 transitions. [2021-11-19 14:02:29,979 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 5059 transitions. Word has length 105 [2021-11-19 14:02:29,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:29,982 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 5059 transitions. [2021-11-19 14:02:29,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-19 14:02:29,983 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 5059 transitions. [2021-11-19 14:02:29,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:02:29,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:29,995 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:30,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:30,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:30,219 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:02:30,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:30,220 INFO L85 PathProgramCache]: Analyzing trace with hash -396901691, now seen corresponding path program 1 times [2021-11-19 14:02:30,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:30,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994159215] [2021-11-19 14:02:30,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:30,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:30,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:30,229 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:30,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:02:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:31,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 2203 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:02:31,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-11-19 14:02:31,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:32,383 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-19 14:02:32,384 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:32,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994159215] [2021-11-19 14:02:32,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994159215] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:32,391 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:32,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:02:32,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731099634] [2021-11-19 14:02:32,392 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:32,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:02:32,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:32,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:02:32,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:02:32,396 INFO L87 Difference]: Start difference. First operand 3528 states and 5059 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 14:02:34,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:02:35,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:35,265 INFO L93 Difference]: Finished difference Result 9883 states and 14141 transitions. [2021-11-19 14:02:35,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:02:35,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2021-11-19 14:02:35,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:35,331 INFO L225 Difference]: With dead ends: 9883 [2021-11-19 14:02:35,331 INFO L226 Difference]: Without dead ends: 6374 [2021-11-19 14:02:35,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 225 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 14:02:35,356 INFO L933 BasicCegarLoop]: 2141 mSDtfsCounter, 1413 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 3854 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:35,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1413 Valid, 3854 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 14:02:35,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6374 states. [2021-11-19 14:02:35,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6374 to 6340. [2021-11-19 14:02:35,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6340 states, 4223 states have (on average 1.2872365616860053) internal successors, (5436), 4342 states have internal predecessors, (5436), 1805 states have call successors, (1805), 307 states have call predecessors, (1805), 309 states have return successors, (1810), 1759 states have call predecessors, (1810), 1801 states have call successors, (1810) [2021-11-19 14:02:35,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6340 states to 6340 states and 9051 transitions. [2021-11-19 14:02:35,914 INFO L78 Accepts]: Start accepts. Automaton has 6340 states and 9051 transitions. Word has length 114 [2021-11-19 14:02:35,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:35,915 INFO L470 AbstractCegarLoop]: Abstraction has 6340 states and 9051 transitions. [2021-11-19 14:02:35,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 14:02:35,915 INFO L276 IsEmpty]: Start isEmpty. Operand 6340 states and 9051 transitions. [2021-11-19 14:02:35,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 14:02:35,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:35,926 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 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] [2021-11-19 14:02:35,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:36,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:36,139 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:02:36,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:36,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1501187552, now seen corresponding path program 1 times [2021-11-19 14:02:36,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:36,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993007211] [2021-11-19 14:02:36,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:36,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:36,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:36,146 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:36,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:02:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:37,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 2260 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:02:37,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:37,915 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-19 14:02:37,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-19 14:02:38,337 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:38,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993007211] [2021-11-19 14:02:38,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993007211] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:38,337 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:38,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:02:38,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251255570] [2021-11-19 14:02:38,338 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:38,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:02:38,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:38,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:02:38,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:02:38,340 INFO L87 Difference]: Start difference. First operand 6340 states and 9051 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-19 14:02:40,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:02:45,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:45,491 INFO L93 Difference]: Finished difference Result 22105 states and 31281 transitions. [2021-11-19 14:02:45,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:02:45,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 119 [2021-11-19 14:02:45,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:45,661 INFO L225 Difference]: With dead ends: 22105 [2021-11-19 14:02:45,662 INFO L226 Difference]: Without dead ends: 15784 [2021-11-19 14:02:45,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 234 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 14:02:45,710 INFO L933 BasicCegarLoop]: 2369 mSDtfsCounter, 2784 mSDsluCounter, 3781 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2784 SdHoareTripleChecker+Valid, 6150 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:45,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2784 Valid, 6150 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 594 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-19 14:02:45,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15784 states. [2021-11-19 14:02:46,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15784 to 15710. [2021-11-19 14:02:46,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15710 states, 10446 states have (on average 1.2700555236454145) internal successors, (13267), 10724 states have internal predecessors, (13267), 4423 states have call successors, (4423), 848 states have call predecessors, (4423), 838 states have return successors, (4446), 4263 states have call predecessors, (4446), 4419 states have call successors, (4446) [2021-11-19 14:02:46,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15710 states to 15710 states and 22136 transitions. [2021-11-19 14:02:46,884 INFO L78 Accepts]: Start accepts. Automaton has 15710 states and 22136 transitions. Word has length 119 [2021-11-19 14:02:46,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:46,885 INFO L470 AbstractCegarLoop]: Abstraction has 15710 states and 22136 transitions. [2021-11-19 14:02:46,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-19 14:02:46,886 INFO L276 IsEmpty]: Start isEmpty. Operand 15710 states and 22136 transitions. [2021-11-19 14:02:46,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-19 14:02:46,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:46,890 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:02:46,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:47,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:47,115 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:02:47,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:47,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1586763316, now seen corresponding path program 1 times [2021-11-19 14:02:47,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:47,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169834037] [2021-11-19 14:02:47,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:47,118 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:47,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:47,124 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:47,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:02:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:48,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 2358 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:02:48,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:49,022 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-19 14:02:49,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-19 14:02:49,552 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:49,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169834037] [2021-11-19 14:02:49,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169834037] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:49,553 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:49,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:02:49,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892271720] [2021-11-19 14:02:49,553 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:49,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:02:49,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:49,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:02:49,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:02:49,555 INFO L87 Difference]: Start difference. First operand 15710 states and 22136 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-19 14:02:51,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:02:55,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:55,229 INFO L93 Difference]: Finished difference Result 34633 states and 48601 transitions. [2021-11-19 14:02:55,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:02:55,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 143 [2021-11-19 14:02:55,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:55,392 INFO L225 Difference]: With dead ends: 34633 [2021-11-19 14:02:55,392 INFO L226 Difference]: Without dead ends: 18942 [2021-11-19 14:02:55,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 282 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 14:02:55,467 INFO L933 BasicCegarLoop]: 2573 mSDtfsCounter, 2561 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2561 SdHoareTripleChecker+Valid, 3986 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:55,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2561 Valid, 3986 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 429 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-19 14:02:55,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18942 states. [2021-11-19 14:02:56,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18942 to 18800. [2021-11-19 14:02:56,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18800 states, 12818 states have (on average 1.2637696988609768) internal successors, (16199), 13292 states have internal predecessors, (16199), 4894 states have call successors, (4894), 1290 states have call predecessors, (4894), 1085 states have return successors, (5034), 4307 states have call predecessors, (5034), 4890 states have call successors, (5034) [2021-11-19 14:02:56,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18800 states to 18800 states and 26127 transitions. [2021-11-19 14:02:56,716 INFO L78 Accepts]: Start accepts. Automaton has 18800 states and 26127 transitions. Word has length 143 [2021-11-19 14:02:56,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:56,717 INFO L470 AbstractCegarLoop]: Abstraction has 18800 states and 26127 transitions. [2021-11-19 14:02:56,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-19 14:02:56,718 INFO L276 IsEmpty]: Start isEmpty. Operand 18800 states and 26127 transitions. [2021-11-19 14:02:56,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-19 14:02:56,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:56,723 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:02:56,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:56,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:56,947 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:02:56,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:56,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1196590423, now seen corresponding path program 1 times [2021-11-19 14:02:56,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:56,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261856077] [2021-11-19 14:02:56,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:56,951 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:56,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:56,953 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:56,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:02:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:58,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 2260 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:02:58,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-11-19 14:02:59,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:00,566 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-11-19 14:03:00,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:03:00,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261856077] [2021-11-19 14:03:00,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261856077] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:00,567 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:00,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-19 14:03:00,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938794355] [2021-11-19 14:03:00,567 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:00,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:03:00,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:03:00,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:03:00,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:03:00,569 INFO L87 Difference]: Start difference. First operand 18800 states and 26127 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 14:03:01,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:01,700 INFO L93 Difference]: Finished difference Result 18806 states and 26132 transitions. [2021-11-19 14:03:01,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:03:01,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 161 [2021-11-19 14:03:01,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:01,784 INFO L225 Difference]: With dead ends: 18806 [2021-11-19 14:03:01,785 INFO L226 Difference]: Without dead ends: 18804 [2021-11-19 14:03:01,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:03:01,793 INFO L933 BasicCegarLoop]: 1769 mSDtfsCounter, 1688 mSDsluCounter, 7051 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 8820 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:01,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1699 Valid, 8820 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:03:01,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18804 states. [2021-11-19 14:03:03,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18804 to 18804. [2021-11-19 14:03:03,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18804 states, 12821 states have (on average 1.2637079790967942) internal successors, (16202), 13295 states have internal predecessors, (16202), 4894 states have call successors, (4894), 1291 states have call predecessors, (4894), 1086 states have return successors, (5034), 4307 states have call predecessors, (5034), 4890 states have call successors, (5034) [2021-11-19 14:03:03,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18804 states to 18804 states and 26130 transitions. [2021-11-19 14:03:03,149 INFO L78 Accepts]: Start accepts. Automaton has 18804 states and 26130 transitions. Word has length 161 [2021-11-19 14:03:03,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:03,150 INFO L470 AbstractCegarLoop]: Abstraction has 18804 states and 26130 transitions. [2021-11-19 14:03:03,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 14:03:03,151 INFO L276 IsEmpty]: Start isEmpty. Operand 18804 states and 26130 transitions. [2021-11-19 14:03:03,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-19 14:03:03,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:03,156 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:03,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:03,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:03:03,379 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:03:03,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:03,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2114566051, now seen corresponding path program 1 times [2021-11-19 14:03:03,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:03:03,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730954631] [2021-11-19 14:03:03,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:03,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:03:03,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:03:03,386 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:03:03,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:03:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:04,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 2267 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:03:04,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:06,299 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-11-19 14:03:06,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-11-19 14:03:07,351 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:03:07,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730954631] [2021-11-19 14:03:07,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730954631] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:03:07,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:03:07,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:03:07,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071490975] [2021-11-19 14:03:07,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:07,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:03:07,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:03:07,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:03:07,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:03:07,355 INFO L87 Difference]: Start difference. First operand 18804 states and 26130 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-19 14:03:08,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:08,298 INFO L93 Difference]: Finished difference Result 18810 states and 26135 transitions. [2021-11-19 14:03:08,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:03:08,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2021-11-19 14:03:08,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:08,385 INFO L225 Difference]: With dead ends: 18810 [2021-11-19 14:03:08,385 INFO L226 Difference]: Without dead ends: 18808 [2021-11-19 14:03:08,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:03:08,394 INFO L933 BasicCegarLoop]: 1772 mSDtfsCounter, 1713 mSDsluCounter, 3525 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:08,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1723 Valid, 5297 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:03:08,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18808 states. [2021-11-19 14:03:09,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18808 to 18808. [2021-11-19 14:03:09,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18808 states, 12824 states have (on average 1.263646288209607) internal successors, (16205), 13298 states have internal predecessors, (16205), 4894 states have call successors, (4894), 1292 states have call predecessors, (4894), 1087 states have return successors, (5034), 4307 states have call predecessors, (5034), 4890 states have call successors, (5034) [2021-11-19 14:03:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18808 states to 18808 states and 26133 transitions. [2021-11-19 14:03:09,578 INFO L78 Accepts]: Start accepts. Automaton has 18808 states and 26133 transitions. Word has length 166 [2021-11-19 14:03:09,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:09,579 INFO L470 AbstractCegarLoop]: Abstraction has 18808 states and 26133 transitions. [2021-11-19 14:03:09,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-19 14:03:09,579 INFO L276 IsEmpty]: Start isEmpty. Operand 18808 states and 26133 transitions. [2021-11-19 14:03:09,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-19 14:03:09,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:09,584 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:09,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:09,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:03:09,799 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:03:09,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:09,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1079271767, now seen corresponding path program 1 times [2021-11-19 14:03:09,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:03:09,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344657674] [2021-11-19 14:03:09,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:09,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:03:09,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:03:09,805 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:03:09,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:03:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:11,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 2274 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:03:11,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2021-11-19 14:03:12,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:13,607 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2021-11-19 14:03:13,607 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:03:13,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344657674] [2021-11-19 14:03:13,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344657674] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:03:13,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:03:13,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:03:13,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240014810] [2021-11-19 14:03:13,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:13,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:03:13,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:03:13,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:03:13,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:03:13,609 INFO L87 Difference]: Start difference. First operand 18808 states and 26133 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 14:03:14,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:14,627 INFO L93 Difference]: Finished difference Result 18814 states and 26138 transitions. [2021-11-19 14:03:14,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:03:14,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 171 [2021-11-19 14:03:14,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:14,721 INFO L225 Difference]: With dead ends: 18814 [2021-11-19 14:03:14,721 INFO L226 Difference]: Without dead ends: 18812 [2021-11-19 14:03:14,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:03:14,734 INFO L933 BasicCegarLoop]: 1772 mSDtfsCounter, 1713 mSDsluCounter, 3525 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1722 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:14,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1722 Valid, 5297 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:03:14,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18812 states. [2021-11-19 14:03:16,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18812 to 18812. [2021-11-19 14:03:16,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18812 states, 12827 states have (on average 1.2635846261791535) internal successors, (16208), 13301 states have internal predecessors, (16208), 4894 states have call successors, (4894), 1293 states have call predecessors, (4894), 1088 states have return successors, (5034), 4307 states have call predecessors, (5034), 4890 states have call successors, (5034) [2021-11-19 14:03:16,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18812 states to 18812 states and 26136 transitions. [2021-11-19 14:03:16,215 INFO L78 Accepts]: Start accepts. Automaton has 18812 states and 26136 transitions. Word has length 171 [2021-11-19 14:03:16,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:16,216 INFO L470 AbstractCegarLoop]: Abstraction has 18812 states and 26136 transitions. [2021-11-19 14:03:16,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 14:03:16,217 INFO L276 IsEmpty]: Start isEmpty. Operand 18812 states and 26136 transitions. [2021-11-19 14:03:16,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-19 14:03:16,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:16,221 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:16,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:16,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:03:16,435 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:03:16,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:16,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1803795677, now seen corresponding path program 1 times [2021-11-19 14:03:16,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:03:16,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446910635] [2021-11-19 14:03:16,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:16,438 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:03:16,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:03:16,440 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:03:16,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:03:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:17,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 2281 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:03:17,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-11-19 14:03:19,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-11-19 14:03:20,446 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:03:20,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446910635] [2021-11-19 14:03:20,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446910635] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:03:20,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:03:20,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:03:20,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286760954] [2021-11-19 14:03:20,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:20,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:03:20,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:03:20,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:03:20,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:03:20,448 INFO L87 Difference]: Start difference. First operand 18812 states and 26136 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 14:03:21,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:21,609 INFO L93 Difference]: Finished difference Result 18818 states and 26141 transitions. [2021-11-19 14:03:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:03:21,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 176 [2021-11-19 14:03:21,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:21,697 INFO L225 Difference]: With dead ends: 18818 [2021-11-19 14:03:21,698 INFO L226 Difference]: Without dead ends: 18816 [2021-11-19 14:03:21,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:03:21,707 INFO L933 BasicCegarLoop]: 1772 mSDtfsCounter, 1713 mSDsluCounter, 3525 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:21,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 5297 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:03:21,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18816 states. [2021-11-19 14:03:23,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18816 to 18816. [2021-11-19 14:03:23,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18816 states, 12830 states have (on average 1.263522992985191) internal successors, (16211), 13304 states have internal predecessors, (16211), 4894 states have call successors, (4894), 1294 states have call predecessors, (4894), 1089 states have return successors, (5034), 4307 states have call predecessors, (5034), 4890 states have call successors, (5034) [2021-11-19 14:03:23,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18816 states to 18816 states and 26139 transitions. [2021-11-19 14:03:23,151 INFO L78 Accepts]: Start accepts. Automaton has 18816 states and 26139 transitions. Word has length 176 [2021-11-19 14:03:23,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:23,152 INFO L470 AbstractCegarLoop]: Abstraction has 18816 states and 26139 transitions. [2021-11-19 14:03:23,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 14:03:23,153 INFO L276 IsEmpty]: Start isEmpty. Operand 18816 states and 26139 transitions. [2021-11-19 14:03:23,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-19 14:03:23,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:23,157 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:23,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:23,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:03:23,371 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:03:23,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:23,371 INFO L85 PathProgramCache]: Analyzing trace with hash -323063127, now seen corresponding path program 1 times [2021-11-19 14:03:23,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:03:23,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666820596] [2021-11-19 14:03:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:23,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:03:23,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:03:23,377 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:03:23,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:03:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:24,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 2288 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:03:24,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:26,186 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-11-19 14:03:26,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:27,085 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-11-19 14:03:27,085 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:03:27,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666820596] [2021-11-19 14:03:27,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666820596] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:03:27,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:03:27,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:03:27,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802004437] [2021-11-19 14:03:27,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:27,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:03:27,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:03:27,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:03:27,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:03:27,087 INFO L87 Difference]: Start difference. First operand 18816 states and 26139 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 14:03:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:28,249 INFO L93 Difference]: Finished difference Result 18822 states and 26144 transitions. [2021-11-19 14:03:28,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:03:28,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 181 [2021-11-19 14:03:28,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:28,339 INFO L225 Difference]: With dead ends: 18822 [2021-11-19 14:03:28,339 INFO L226 Difference]: Without dead ends: 18820 [2021-11-19 14:03:28,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:03:28,348 INFO L933 BasicCegarLoop]: 1772 mSDtfsCounter, 1713 mSDsluCounter, 3525 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:28,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1720 Valid, 5297 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:03:28,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18820 states. [2021-11-19 14:03:29,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18820 to 18820. [2021-11-19 14:03:29,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18820 states, 12833 states have (on average 1.2634613886074963) internal successors, (16214), 13307 states have internal predecessors, (16214), 4894 states have call successors, (4894), 1295 states have call predecessors, (4894), 1090 states have return successors, (5034), 4307 states have call predecessors, (5034), 4890 states have call successors, (5034) [2021-11-19 14:03:29,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18820 states to 18820 states and 26142 transitions. [2021-11-19 14:03:29,987 INFO L78 Accepts]: Start accepts. Automaton has 18820 states and 26142 transitions. Word has length 181 [2021-11-19 14:03:29,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:29,988 INFO L470 AbstractCegarLoop]: Abstraction has 18820 states and 26142 transitions. [2021-11-19 14:03:29,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 14:03:29,988 INFO L276 IsEmpty]: Start isEmpty. Operand 18820 states and 26142 transitions. [2021-11-19 14:03:29,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-19 14:03:29,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:29,995 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:30,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-19 14:03:30,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:03:30,211 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:03:30,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:30,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2042093917, now seen corresponding path program 1 times [2021-11-19 14:03:30,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:03:30,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798894211] [2021-11-19 14:03:30,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:30,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:03:30,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:03:30,214 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:03:30,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:03:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:31,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 2295 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:03:31,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2021-11-19 14:03:33,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2021-11-19 14:03:34,096 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:03:34,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798894211] [2021-11-19 14:03:34,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798894211] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:03:34,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:03:34,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:03:34,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540110316] [2021-11-19 14:03:34,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:34,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:03:34,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:03:34,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:03:34,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:03:34,099 INFO L87 Difference]: Start difference. First operand 18820 states and 26142 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 14:03:35,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:35,286 INFO L93 Difference]: Finished difference Result 18826 states and 26147 transitions. [2021-11-19 14:03:35,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:03:35,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 186 [2021-11-19 14:03:35,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:35,372 INFO L225 Difference]: With dead ends: 18826 [2021-11-19 14:03:35,372 INFO L226 Difference]: Without dead ends: 18824 [2021-11-19 14:03:35,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:03:35,387 INFO L933 BasicCegarLoop]: 1772 mSDtfsCounter, 1713 mSDsluCounter, 3525 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:35,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 5297 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:03:35,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18824 states. [2021-11-19 14:03:36,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18824 to 18824. [2021-11-19 14:03:36,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18824 states, 12836 states have (on average 1.2633998130258648) internal successors, (16217), 13310 states have internal predecessors, (16217), 4894 states have call successors, (4894), 1296 states have call predecessors, (4894), 1091 states have return successors, (5034), 4307 states have call predecessors, (5034), 4890 states have call successors, (5034) [2021-11-19 14:03:37,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18824 states to 18824 states and 26145 transitions. [2021-11-19 14:03:37,054 INFO L78 Accepts]: Start accepts. Automaton has 18824 states and 26145 transitions. Word has length 186 [2021-11-19 14:03:37,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:37,054 INFO L470 AbstractCegarLoop]: Abstraction has 18824 states and 26145 transitions. [2021-11-19 14:03:37,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 14:03:37,055 INFO L276 IsEmpty]: Start isEmpty. Operand 18824 states and 26145 transitions. [2021-11-19 14:03:37,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-19 14:03:37,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:37,059 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:37,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:37,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:03:37,263 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:03:37,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:37,263 INFO L85 PathProgramCache]: Analyzing trace with hash 645901553, now seen corresponding path program 1 times [2021-11-19 14:03:37,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:03:37,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281666109] [2021-11-19 14:03:37,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:37,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:03:37,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:03:37,267 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:03:37,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:03:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:38,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 2359 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:03:38,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-11-19 14:03:38,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-11-19 14:03:39,432 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:03:39,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281666109] [2021-11-19 14:03:39,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281666109] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:39,432 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:39,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:03:39,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511687983] [2021-11-19 14:03:39,433 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:39,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:03:39,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:03:39,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:03:39,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:03:39,435 INFO L87 Difference]: Start difference. First operand 18824 states and 26145 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) [2021-11-19 14:03:41,644 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 14:03:48,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:48,434 INFO L93 Difference]: Finished difference Result 55223 states and 76724 transitions. [2021-11-19 14:03:48,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:03:48,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) Word has length 205 [2021-11-19 14:03:48,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:48,543 INFO L225 Difference]: With dead ends: 55223 [2021-11-19 14:03:48,543 INFO L226 Difference]: Without dead ends: 36502 [2021-11-19 14:03:48,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 406 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 14:03:48,607 INFO L933 BasicCegarLoop]: 3502 mSDtfsCounter, 3546 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 409 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3546 SdHoareTripleChecker+Valid, 6207 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:48,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3546 Valid, 6207 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 745 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-19 14:03:48,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36502 states. [2021-11-19 14:03:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36502 to 36452. [2021-11-19 14:03:51,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36452 states, 24880 states have (on average 1.259686495176849) internal successors, (31341), 25760 states have internal predecessors, (31341), 9452 states have call successors, (9452), 2526 states have call predecessors, (9452), 2117 states have return successors, (9736), 8345 states have call predecessors, (9736), 9448 states have call successors, (9736) [2021-11-19 14:03:51,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36452 states to 36452 states and 50529 transitions. [2021-11-19 14:03:51,237 INFO L78 Accepts]: Start accepts. Automaton has 36452 states and 50529 transitions. Word has length 205 [2021-11-19 14:03:51,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:51,238 INFO L470 AbstractCegarLoop]: Abstraction has 36452 states and 50529 transitions. [2021-11-19 14:03:51,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) [2021-11-19 14:03:51,238 INFO L276 IsEmpty]: Start isEmpty. Operand 36452 states and 50529 transitions. [2021-11-19 14:03:51,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-19 14:03:51,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:51,244 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:51,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:51,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:03:51,444 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:03:51,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:51,445 INFO L85 PathProgramCache]: Analyzing trace with hash -238422359, now seen corresponding path program 1 times [2021-11-19 14:03:51,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:03:51,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293209390] [2021-11-19 14:03:51,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:51,447 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:03:51,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:03:51,448 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:03:51,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:03:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:52,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 2302 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:03:52,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:54,233 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2021-11-19 14:03:54,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2021-11-19 14:03:55,163 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:03:55,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293209390] [2021-11-19 14:03:55,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293209390] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:03:55,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:03:55,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:03:55,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924137663] [2021-11-19 14:03:55,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:55,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:03:55,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:03:55,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:03:55,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:03:55,165 INFO L87 Difference]: Start difference. First operand 36452 states and 50529 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 14:03:57,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:57,609 INFO L93 Difference]: Finished difference Result 36458 states and 50534 transitions. [2021-11-19 14:03:57,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:03:57,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 191 [2021-11-19 14:03:57,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:57,702 INFO L225 Difference]: With dead ends: 36458 [2021-11-19 14:03:57,702 INFO L226 Difference]: Without dead ends: 36456 [2021-11-19 14:03:57,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:03:57,713 INFO L933 BasicCegarLoop]: 1772 mSDtfsCounter, 1713 mSDsluCounter, 3525 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:57,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1718 Valid, 5297 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:03:57,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36456 states. [2021-11-19 14:04:00,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36456 to 36456. [2021-11-19 14:04:00,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36456 states, 24883 states have (on average 1.2596551862717518) internal successors, (31344), 25763 states have internal predecessors, (31344), 9452 states have call successors, (9452), 2527 states have call predecessors, (9452), 2118 states have return successors, (9736), 8345 states have call predecessors, (9736), 9448 states have call successors, (9736) [2021-11-19 14:04:00,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36456 states to 36456 states and 50532 transitions. [2021-11-19 14:04:00,202 INFO L78 Accepts]: Start accepts. Automaton has 36456 states and 50532 transitions. Word has length 191 [2021-11-19 14:04:00,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:00,203 INFO L470 AbstractCegarLoop]: Abstraction has 36456 states and 50532 transitions. [2021-11-19 14:04:00,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 14:04:00,203 INFO L276 IsEmpty]: Start isEmpty. Operand 36456 states and 50532 transitions. [2021-11-19 14:04:00,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-19 14:04:00,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:00,210 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:00,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:04:00,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:04:00,427 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:04:00,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:00,427 INFO L85 PathProgramCache]: Analyzing trace with hash 805915171, now seen corresponding path program 1 times [2021-11-19 14:04:00,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:04:00,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273330824] [2021-11-19 14:04:00,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:00,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:04:00,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:04:00,431 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:04:00,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65dea31-037b-4a7f-b7ad-4f6881b5d106/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:04:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:01,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 2309 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:04:01,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:04:03,303 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2021-11-19 14:04:03,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:04:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2021-11-19 14:04:04,215 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:04:04,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273330824] [2021-11-19 14:04:04,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273330824] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:04:04,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:04:04,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:04:04,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753091747] [2021-11-19 14:04:04,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:04,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:04:04,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:04:04,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:04:04,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:04:04,221 INFO L87 Difference]: Start difference. First operand 36456 states and 50532 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 14:04:06,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:06,767 INFO L93 Difference]: Finished difference Result 36462 states and 50537 transitions. [2021-11-19 14:04:06,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:04:06,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 196 [2021-11-19 14:04:06,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:06,881 INFO L225 Difference]: With dead ends: 36462 [2021-11-19 14:04:06,881 INFO L226 Difference]: Without dead ends: 36460 [2021-11-19 14:04:06,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:04:06,893 INFO L933 BasicCegarLoop]: 1772 mSDtfsCounter, 1713 mSDsluCounter, 3525 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:06,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1717 Valid, 5297 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:04:06,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36460 states.