./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-realtek-8139cp.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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/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-realtek-8139cp.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/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 bdbaacac7560cb4317515ea94aeb4341c343c1b3a78ea4f9610ad493958cf26e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:45:23,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:45:23,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:45:23,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:45:23,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:45:23,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:45:23,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:45:23,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:45:23,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:45:23,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:45:23,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:45:23,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:45:23,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:45:23,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:45:23,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:45:23,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:45:23,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:45:23,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:45:23,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:45:23,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:45:23,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:45:23,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:45:23,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:45:23,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:45:23,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:45:23,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:45:23,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:45:23,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:45:23,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:45:23,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:45:23,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:45:23,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:45:23,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:45:23,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:45:23,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:45:23,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:45:23,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:45:23,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:45:23,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:45:23,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:45:23,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:45:23,312 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:45:23,361 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:45:23,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:45:23,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:45:23,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:45:23,363 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:45:23,363 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:45:23,364 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:45:23,364 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:45:23,364 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:45:23,364 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:45:23,365 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:45:23,365 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:45:23,366 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:45:23,366 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:45:23,366 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:45:23,366 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:45:23,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:45:23,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:45:23,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:45:23,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:45:23,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:45:23,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:45:23,368 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:45:23,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:45:23,369 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:45:23,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:45:23,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:45:23,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:45:23,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:45:23,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:45:23,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:45:23,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:45:23,372 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:45:23,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:45:23,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:45:23,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:45:23,373 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:45:23,373 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdbaacac7560cb4317515ea94aeb4341c343c1b3a78ea4f9610ad493958cf26e [2021-11-19 14:45:23,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:45:23,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:45:23,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:45:23,753 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:45:23,754 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:45:23,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i [2021-11-19 14:45:23,825 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/data/3ddf193bc/6d92c9a35078485e90433b2566394ab6/FLAG5f6b3e9d9 [2021-11-19 14:45:24,988 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:45:24,989 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i [2021-11-19 14:45:25,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/data/3ddf193bc/6d92c9a35078485e90433b2566394ab6/FLAG5f6b3e9d9 [2021-11-19 14:45:25,296 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/data/3ddf193bc/6d92c9a35078485e90433b2566394ab6 [2021-11-19 14:45:25,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:45:25,299 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:45:25,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:45:25,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:45:25,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:45:25,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:45:25" (1/1) ... [2021-11-19 14:45:25,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f946a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:25, skipping insertion in model container [2021-11-19 14:45:25,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:45:25" (1/1) ... [2021-11-19 14:45:25,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:45:25,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:45:27,830 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:45:27,949 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:45:27,951 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:45:29,638 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387186,387199] [2021-11-19 14:45:29,641 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387355,387368] [2021-11-19 14:45:29,642 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387522,387535] [2021-11-19 14:45:29,643 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387690,387703] [2021-11-19 14:45:29,677 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:45:29,729 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:45:29,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3079747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:29, skipping insertion in model container [2021-11-19 14:45:29,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:45:29,730 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:45:29,732 INFO L158 Benchmark]: Toolchain (without parser) took 4431.77ms. Allocated memory was 109.1MB in the beginning and 155.2MB in the end (delta: 46.1MB). Free memory was 75.4MB in the beginning and 77.8MB in the end (delta: -2.5MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. [2021-11-19 14:45:29,733 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 109.1MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:45:29,734 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4429.33ms. Allocated memory was 109.1MB in the beginning and 155.2MB in the end (delta: 46.1MB). Free memory was 75.2MB in the beginning and 77.8MB in the end (delta: -2.7MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. [2021-11-19 14:45:29,737 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 109.1MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4429.33ms. Allocated memory was 109.1MB in the beginning and 155.2MB in the end (delta: 46.1MB). Free memory was 75.2MB in the beginning and 77.8MB in the end (delta: -2.7MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6978]: 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/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-realtek-8139cp.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/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 bdbaacac7560cb4317515ea94aeb4341c343c1b3a78ea4f9610ad493958cf26e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:45:32,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:45:32,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:45:32,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:45:32,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:45:32,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:45:32,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:45:32,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:45:32,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:45:32,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:45:32,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:45:32,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:45:32,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:45:32,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:45:32,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:45:32,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:45:32,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:45:32,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:45:32,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:45:32,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:45:32,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:45:32,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:45:32,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:45:32,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:45:32,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:45:32,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:45:32,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:45:32,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:45:32,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:45:32,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:45:32,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:45:32,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:45:32,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:45:32,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:45:32,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:45:32,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:45:32,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:45:32,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:45:32,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:45:32,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:45:32,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:45:32,237 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:45:32,281 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:45:32,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:45:32,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:45:32,283 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:45:32,283 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:45:32,284 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:45:32,284 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:45:32,284 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:45:32,284 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:45:32,285 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:45:32,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:45:32,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:45:32,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:45:32,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:45:32,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:45:32,288 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:45:32,289 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:45:32,289 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:45:32,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:45:32,289 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:45:32,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:45:32,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:45:32,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:45:32,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:45:32,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:45:32,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:45:32,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:45:32,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:45:32,291 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:45:32,292 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:45:32,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:45:32,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:45:32,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:45:32,293 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdbaacac7560cb4317515ea94aeb4341c343c1b3a78ea4f9610ad493958cf26e [2021-11-19 14:45:32,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:45:32,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:45:32,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:45:32,764 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:45:32,766 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:45:32,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i [2021-11-19 14:45:32,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/data/162de1ff5/cb6ec96e1dc34da0907a3fed9d4422eb/FLAGe942d4951 [2021-11-19 14:45:33,997 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:45:33,998 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i [2021-11-19 14:45:34,045 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/data/162de1ff5/cb6ec96e1dc34da0907a3fed9d4422eb/FLAGe942d4951 [2021-11-19 14:45:34,063 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/data/162de1ff5/cb6ec96e1dc34da0907a3fed9d4422eb [2021-11-19 14:45:34,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:45:34,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:45:34,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:45:34,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:45:34,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:45:34,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:45:34" (1/1) ... [2021-11-19 14:45:34,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63311e1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:34, skipping insertion in model container [2021-11-19 14:45:34,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:45:34" (1/1) ... [2021-11-19 14:45:34,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:45:34,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:45:38,435 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387186,387199] [2021-11-19 14:45:38,439 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387355,387368] [2021-11-19 14:45:38,440 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387522,387535] [2021-11-19 14:45:38,440 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387690,387703] [2021-11-19 14:45:38,473 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:45:38,532 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:45:38,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:45:39,129 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387186,387199] [2021-11-19 14:45:39,130 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387355,387368] [2021-11-19 14:45:39,134 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387522,387535] [2021-11-19 14:45:39,134 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387690,387703] [2021-11-19 14:45:39,146 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:45:39,198 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:45:39,771 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387186,387199] [2021-11-19 14:45:39,772 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387355,387368] [2021-11-19 14:45:39,773 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387522,387535] [2021-11-19 14:45:39,773 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_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i[387690,387703] [2021-11-19 14:45:39,804 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:45:40,287 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:45:40,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:40 WrapperNode [2021-11-19 14:45:40,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:45:40,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:45:40,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:45:40,291 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:45:40,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:40" (1/1) ... [2021-11-19 14:45:40,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:40" (1/1) ... [2021-11-19 14:45:40,746 INFO L137 Inliner]: procedures = 555, calls = 2423, calls flagged for inlining = 273, calls inlined = 244, statements flattened = 5399 [2021-11-19 14:45:40,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:45:40,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:45:40,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:45:40,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:45:40,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:40" (1/1) ... [2021-11-19 14:45:40,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:40" (1/1) ... [2021-11-19 14:45:40,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:40" (1/1) ... [2021-11-19 14:45:40,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:40" (1/1) ... [2021-11-19 14:45:40,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:40" (1/1) ... [2021-11-19 14:45:41,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:40" (1/1) ... [2021-11-19 14:45:41,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:40" (1/1) ... [2021-11-19 14:45:41,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:45:41,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:45:41,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:45:41,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:45:41,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:40" (1/1) ... [2021-11-19 14:45:41,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:45:41,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:45:41,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:45:41,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:45:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure mii_check_media [2021-11-19 14:45:41,192 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_check_media [2021-11-19 14:45:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-19 14:45:41,192 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-19 14:45:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 14:45:41,193 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 14:45:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 14:45:41,193 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 14:45:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:45:41,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:45:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_78 [2021-11-19 14:45:41,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_78 [2021-11-19 14:45:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:45:41,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:45:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure cp_poll_controller [2021-11-19 14:45:41,195 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_poll_controller [2021-11-19 14:45:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 14:45:41,196 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 14:45:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-19 14:45:41,196 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-19 14:45:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure cp_init_rings [2021-11-19 14:45:41,196 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_init_rings [2021-11-19 14:45:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-19 14:45:41,197 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-19 14:45:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 14:45:41,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 14:45:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-19 14:45:41,198 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-19 14:45:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-19 14:45:41,198 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-19 14:45:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-19 14:45:41,199 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-19 14:45:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 14:45:41,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 14:45:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:45:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-19 14:45:41,200 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-19 14:45:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:45:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:45:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:45:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure cp_set_rxbufsize [2021-11-19 14:45:41,201 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_set_rxbufsize [2021-11-19 14:45:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_cmd [2021-11-19 14:45:41,202 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_cmd [2021-11-19 14:45:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 14:45:41,203 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 14:45:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-19 14:45:41,203 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-19 14:45:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 14:45:41,203 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 14:45:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_109 [2021-11-19 14:45:41,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_109 [2021-11-19 14:45:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 14:45:41,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 14:45:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 14:45:41,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 14:45:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure cp_init_rings_index [2021-11-19 14:45:41,205 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_init_rings_index [2021-11-19 14:45:41,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 14:45:41,206 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 14:45:41,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 14:45:41,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 14:45:41,207 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-19 14:45:41,207 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-19 14:45:41,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 14:45:41,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 14:45:41,207 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-19 14:45:41,207 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-19 14:45:41,208 INFO L130 BoogieDeclarations]: Found specification of procedure cp_set_rx_mode [2021-11-19 14:45:41,208 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_set_rx_mode [2021-11-19 14:45:41,208 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-19 14:45:41,208 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-19 14:45:41,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:45:41,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:45:41,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:45:41,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_cp_private [2021-11-19 14:45:41,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_cp_private [2021-11-19 14:45:41,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 14:45:41,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 14:45:41,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 14:45:41,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 14:45:41,211 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-19 14:45:41,211 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-19 14:45:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:45:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 14:45:41,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 14:45:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:45:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure write_eeprom [2021-11-19 14:45:41,213 INFO L138 BoogieDeclarations]: Found implementation of procedure write_eeprom [2021-11-19 14:45:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:45:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:45:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:45:41,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:45:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:45:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-19 14:45:41,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-19 14:45:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-19 14:45:41,214 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-19 14:45:41,215 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 14:45:41,215 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 14:45:41,215 INFO L130 BoogieDeclarations]: Found specification of procedure cp_get_regs_len [2021-11-19 14:45:41,215 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_get_regs_len [2021-11-19 14:45:41,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-19 14:45:41,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-19 14:45:41,220 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-19 14:45:41,220 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-19 14:45:41,221 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-19 14:45:41,221 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-19 14:45:41,222 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-19 14:45:41,222 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-19 14:45:41,223 INFO L130 BoogieDeclarations]: Found specification of procedure cp_start_hw [2021-11-19 14:45:41,223 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_start_hw [2021-11-19 14:45:41,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:45:41,229 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-11-19 14:45:41,229 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-11-19 14:45:41,229 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-19 14:45:41,229 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-19 14:45:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:45:41,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:45:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure cp_free_rings [2021-11-19 14:45:41,230 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_free_rings [2021-11-19 14:45:41,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:45:41,231 INFO L130 BoogieDeclarations]: Found specification of procedure cp_stop_hw [2021-11-19 14:45:41,231 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_stop_hw [2021-11-19 14:45:41,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:45:41,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:45:41,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:45:41,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:45:41,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:45:41,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 14:45:41,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 14:45:41,232 INFO L130 BoogieDeclarations]: Found specification of procedure cp_get_eeprom_len [2021-11-19 14:45:41,232 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_get_eeprom_len [2021-11-19 14:45:41,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:45:41,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:45:41,233 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-19 14:45:41,233 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-19 14:45:41,233 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_reset_queue [2021-11-19 14:45:41,233 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_reset_queue [2021-11-19 14:45:41,233 INFO L130 BoogieDeclarations]: Found specification of procedure cp_nway_reset [2021-11-19 14:45:41,234 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_nway_reset [2021-11-19 14:45:41,234 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-19 14:45:41,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-19 14:45:41,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:45:41,235 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:45:41,235 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 14:45:41,235 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 14:45:41,235 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-19 14:45:41,235 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-19 14:45:41,236 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2021-11-19 14:45:41,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2021-11-19 14:45:41,236 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-19 14:45:41,236 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-19 14:45:41,236 INFO L130 BoogieDeclarations]: Found specification of procedure cp_resume [2021-11-19 14:45:41,236 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_resume [2021-11-19 14:45:41,237 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-19 14:45:41,237 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-19 14:45:41,237 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2021-11-19 14:45:41,237 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2021-11-19 14:45:41,237 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-19 14:45:41,237 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-19 14:45:41,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:45:41,238 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-19 14:45:41,238 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-19 14:45:41,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:45:41,238 INFO L130 BoogieDeclarations]: Found specification of procedure cp_enable_irq [2021-11-19 14:45:41,238 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_enable_irq [2021-11-19 14:45:41,238 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-19 14:45:41,239 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-19 14:45:41,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_cp_private [2021-11-19 14:45:41,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_cp_private [2021-11-19 14:45:41,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:45:41,239 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2021-11-19 14:45:41,239 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2021-11-19 14:45:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:45:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:45:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure __cp_set_rx_mode [2021-11-19 14:45:41,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __cp_set_rx_mode [2021-11-19 14:45:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure cp_clean_rings [2021-11-19 14:45:41,240 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_clean_rings [2021-11-19 14:45:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:45:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:45:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-19 14:45:41,241 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-19 14:45:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-19 14:45:41,241 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-19 14:45:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-19 14:45:41,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-19 14:45:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 14:45:41,242 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 14:45:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 14:45:41,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 14:45:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_cmd_end [2021-11-19 14:45:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_cmd_end [2021-11-19 14:45:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_108 [2021-11-19 14:45:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_108 [2021-11-19 14:45:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-19 14:45:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-19 14:45:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 14:45:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 14:45:41,244 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 14:45:41,244 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 14:45:41,244 INFO L130 BoogieDeclarations]: Found specification of procedure cp_close [2021-11-19 14:45:41,244 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_close [2021-11-19 14:45:41,244 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 14:45:41,244 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 14:45:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure cp_open [2021-11-19 14:45:41,245 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_open [2021-11-19 14:45:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:45:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:45:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:45:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:45:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:45:41,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:45:41,246 INFO L130 BoogieDeclarations]: Found specification of procedure cp_tx_timeout [2021-11-19 14:45:41,246 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_tx_timeout [2021-11-19 14:45:41,246 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-19 14:45:41,246 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-19 14:45:41,246 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_cmd_start [2021-11-19 14:45:41,247 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_cmd_start [2021-11-19 14:45:41,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 14:45:41,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 14:45:41,247 INFO L130 BoogieDeclarations]: Found specification of procedure cp_init_hw [2021-11-19 14:45:41,247 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_init_hw [2021-11-19 14:45:41,247 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2021-11-19 14:45:41,247 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2021-11-19 14:45:41,248 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_extend_cmd [2021-11-19 14:45:41,248 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_extend_cmd [2021-11-19 14:45:41,248 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-19 14:45:41,248 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-19 14:45:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-19 14:45:41,253 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-19 14:45:41,253 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-19 14:45:41,253 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-19 14:45:41,254 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-19 14:45:41,254 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-19 14:45:41,254 INFO L130 BoogieDeclarations]: Found specification of procedure cp_interrupt [2021-11-19 14:45:41,254 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_interrupt [2021-11-19 14:45:41,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 14:45:41,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 14:45:41,255 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2021-11-19 14:45:41,257 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2021-11-19 14:45:41,257 INFO L130 BoogieDeclarations]: Found specification of procedure cp_remove_one [2021-11-19 14:45:41,257 INFO L138 BoogieDeclarations]: Found implementation of procedure cp_remove_one [2021-11-19 14:45:42,303 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:45:42,307 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:45:44,223 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 14:47:16,271 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 14:47:16,550 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:47:16,575 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:47:16,575 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:47:16,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:47:16 BoogieIcfgContainer [2021-11-19 14:47:16,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:47:16,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:47:16,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:47:16,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:47:16,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:45:34" (1/3) ... [2021-11-19 14:47:16,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376b98be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:47:16, skipping insertion in model container [2021-11-19 14:47:16,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:40" (2/3) ... [2021-11-19 14:47:16,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376b98be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:47:16, skipping insertion in model container [2021-11-19 14:47:16,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:47:16" (3/3) ... [2021-11-19 14:47:16,589 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i [2021-11-19 14:47:16,595 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:47:16,595 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 14:47:16,668 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:47:16,674 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 14:47:16,674 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 14:47:16,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 2021 states, 1350 states have (on average 1.24) internal successors, (1674), 1373 states have internal predecessors, (1674), 562 states have call successors, (562), 107 states have call predecessors, (562), 106 states have return successors, (557), 553 states have call predecessors, (557), 557 states have call successors, (557) [2021-11-19 14:47:16,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-19 14:47:16,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:16,771 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:16,771 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 14:47:16,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:16,777 INFO L85 PathProgramCache]: Analyzing trace with hash -392823862, now seen corresponding path program 1 times [2021-11-19 14:47:16,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:16,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309140085] [2021-11-19 14:47:16,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:16,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:16,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:16,809 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:16,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:47:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:18,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:47:18,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:19,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1080 trivial. 0 not checked. [2021-11-19 14:47:19,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2021-11-19 14:47:20,267 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:20,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309140085] [2021-11-19 14:47:20,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309140085] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:20,268 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:20,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:47:20,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735056764] [2021-11-19 14:47:20,274 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:20,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:47:20,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:20,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:47:20,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:47:20,345 INFO L87 Difference]: Start difference. First operand has 2021 states, 1350 states have (on average 1.24) internal successors, (1674), 1373 states have internal predecessors, (1674), 562 states have call successors, (562), 107 states have call predecessors, (562), 106 states have return successors, (557), 553 states have call predecessors, (557), 557 states have call successors, (557) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-19 14:47:22,745 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:35,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:35,825 INFO L93 Difference]: Finished difference Result 7850 states and 11126 transitions. [2021-11-19 14:47:35,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:47:35,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 200 [2021-11-19 14:47:35,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:35,912 INFO L225 Difference]: With dead ends: 7850 [2021-11-19 14:47:35,913 INFO L226 Difference]: Without dead ends: 5846 [2021-11-19 14:47:35,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:47:35,943 INFO L933 BasicCegarLoop]: 3854 mSDtfsCounter, 6973 mSDsluCounter, 4296 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 1045 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6973 SdHoareTripleChecker+Valid, 8150 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1045 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:35,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6973 Valid, 8150 Invalid, 2161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1045 Valid, 1115 Invalid, 1 Unknown, 0 Unchecked, 14.7s Time] [2021-11-19 14:47:35,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2021-11-19 14:47:36,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 5817. [2021-11-19 14:47:36,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5817 states, 3918 states have (on average 1.2322613578356305) internal successors, (4828), 3982 states have internal predecessors, (4828), 1583 states have call successors, (1583), 314 states have call predecessors, (1583), 313 states have return successors, (1580), 1568 states have call predecessors, (1580), 1580 states have call successors, (1580) [2021-11-19 14:47:36,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5817 states to 5817 states and 7991 transitions. [2021-11-19 14:47:36,502 INFO L78 Accepts]: Start accepts. Automaton has 5817 states and 7991 transitions. Word has length 200 [2021-11-19 14:47:36,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:36,508 INFO L470 AbstractCegarLoop]: Abstraction has 5817 states and 7991 transitions. [2021-11-19 14:47:36,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-19 14:47:36,509 INFO L276 IsEmpty]: Start isEmpty. Operand 5817 states and 7991 transitions. [2021-11-19 14:47:36,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-19 14:47:36,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:36,526 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:36,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:36,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:36,751 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 14:47:36,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:36,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1161536545, now seen corresponding path program 1 times [2021-11-19 14:47:36,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:36,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698256598] [2021-11-19 14:47:36,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:36,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:36,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:36,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:36,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:47:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:38,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:47:38,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:39,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1080 trivial. 0 not checked. [2021-11-19 14:47:39,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:40,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2021-11-19 14:47:40,168 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:40,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698256598] [2021-11-19 14:47:40,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698256598] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:40,170 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:40,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:47:40,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834470200] [2021-11-19 14:47:40,172 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:40,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:47:40,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:40,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:47:40,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:47:40,177 INFO L87 Difference]: Start difference. First operand 5817 states and 7991 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 14:47:42,355 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 14:47:57,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:57,021 INFO L93 Difference]: Finished difference Result 22830 states and 31400 transitions. [2021-11-19 14:47:57,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:47:57,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 212 [2021-11-19 14:47:57,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:57,220 INFO L225 Difference]: With dead ends: 22830 [2021-11-19 14:47:57,220 INFO L226 Difference]: Without dead ends: 17050 [2021-11-19 14:47:57,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:47:57,273 INFO L933 BasicCegarLoop]: 3828 mSDtfsCounter, 6943 mSDsluCounter, 4240 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 1097 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6943 SdHoareTripleChecker+Valid, 8068 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1097 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:57,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6943 Valid, 8068 Invalid, 2200 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1097 Valid, 1102 Invalid, 1 Unknown, 0 Unchecked, 15.8s Time] [2021-11-19 14:47:57,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17050 states. [2021-11-19 14:47:58,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17050 to 16970. [2021-11-19 14:47:58,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16970 states, 11449 states have (on average 1.2351297056511485) internal successors, (14141), 11658 states have internal predecessors, (14141), 4593 states have call successors, (4593), 938 states have call predecessors, (4593), 925 states have return successors, (4611), 4517 states have call predecessors, (4611), 4590 states have call successors, (4611) [2021-11-19 14:47:58,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16970 states to 16970 states and 23345 transitions. [2021-11-19 14:47:58,453 INFO L78 Accepts]: Start accepts. Automaton has 16970 states and 23345 transitions. Word has length 212 [2021-11-19 14:47:58,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:58,456 INFO L470 AbstractCegarLoop]: Abstraction has 16970 states and 23345 transitions. [2021-11-19 14:47:58,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 14:47:58,458 INFO L276 IsEmpty]: Start isEmpty. Operand 16970 states and 23345 transitions. [2021-11-19 14:47:58,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-19 14:47:58,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:58,464 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:58,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:58,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:58,691 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 14:47:58,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash -967961670, now seen corresponding path program 1 times [2021-11-19 14:47:58,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:58,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105719582] [2021-11-19 14:47:58,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:58,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:58,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:58,697 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:58,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:48:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:00,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:48:00,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:01,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1080 trivial. 0 not checked. [2021-11-19 14:48:01,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2021-11-19 14:48:02,023 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:48:02,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105719582] [2021-11-19 14:48:02,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105719582] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:48:02,023 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:48:02,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:48:02,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83844002] [2021-11-19 14:48:02,024 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:48:02,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:48:02,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:48:02,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:48:02,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:48:02,026 INFO L87 Difference]: Start difference. First operand 16970 states and 23345 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-19 14:48:04,192 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:05,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:48:05,908 INFO L93 Difference]: Finished difference Result 45112 states and 61559 transitions. [2021-11-19 14:48:05,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:48:05,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 212 [2021-11-19 14:48:05,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:48:06,113 INFO L225 Difference]: With dead ends: 45112 [2021-11-19 14:48:06,113 INFO L226 Difference]: Without dead ends: 28179 [2021-11-19 14:48:06,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:48:06,221 INFO L933 BasicCegarLoop]: 3134 mSDtfsCounter, 1765 mSDsluCounter, 2634 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 5768 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:48:06,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1765 Valid, 5768 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2021-11-19 14:48:06,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28179 states. [2021-11-19 14:48:07,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28179 to 28133. [2021-11-19 14:48:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28133 states, 18760 states have (on average 1.2215351812366737) internal successors, (22916), 19140 states have internal predecessors, (22916), 7605 states have call successors, (7605), 1793 states have call predecessors, (7605), 1765 states have return successors, (7644), 7442 states have call predecessors, (7644), 7602 states have call successors, (7644) [2021-11-19 14:48:08,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28133 states to 28133 states and 38165 transitions. [2021-11-19 14:48:08,012 INFO L78 Accepts]: Start accepts. Automaton has 28133 states and 38165 transitions. Word has length 212 [2021-11-19 14:48:08,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:48:08,013 INFO L470 AbstractCegarLoop]: Abstraction has 28133 states and 38165 transitions. [2021-11-19 14:48:08,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-19 14:48:08,014 INFO L276 IsEmpty]: Start isEmpty. Operand 28133 states and 38165 transitions. [2021-11-19 14:48:08,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-19 14:48:08,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:48:08,019 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:08,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:08,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:48:08,235 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 14:48:08,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:48:08,235 INFO L85 PathProgramCache]: Analyzing trace with hash 93871240, now seen corresponding path program 1 times [2021-11-19 14:48:08,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:48:08,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247484790] [2021-11-19 14:48:08,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:08,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:48:08,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:48:08,239 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:48:08,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:48:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:09,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:48:09,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1080 trivial. 0 not checked. [2021-11-19 14:48:10,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:11,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2021-11-19 14:48:11,377 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:48:11,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247484790] [2021-11-19 14:48:11,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247484790] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:48:11,378 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:48:11,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:48:11,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785190369] [2021-11-19 14:48:11,378 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:48:11,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:48:11,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:48:11,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:48:11,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:48:11,380 INFO L87 Difference]: Start difference. First operand 28133 states and 38165 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-19 14:48:13,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:25,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:48:25,298 INFO L93 Difference]: Finished difference Result 68574 states and 92735 transitions. [2021-11-19 14:48:25,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:48:25,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 213 [2021-11-19 14:48:25,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:48:25,506 INFO L225 Difference]: With dead ends: 68574 [2021-11-19 14:48:25,506 INFO L226 Difference]: Without dead ends: 40478 [2021-11-19 14:48:25,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:48:25,616 INFO L933 BasicCegarLoop]: 5273 mSDtfsCounter, 4800 mSDsluCounter, 4755 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4800 SdHoareTripleChecker+Valid, 10028 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:48:25,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4800 Valid, 10028 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1155 Invalid, 1 Unknown, 0 Unchecked, 12.4s Time] [2021-11-19 14:48:25,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40478 states. [2021-11-19 14:48:27,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40478 to 40412. [2021-11-19 14:48:27,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40412 states, 27270 states have (on average 1.2178217821782178) internal successors, (33210), 27740 states have internal predecessors, (33210), 10538 states have call successors, (10538), 2638 states have call predecessors, (10538), 2601 states have return successors, (10567), 10363 states have call predecessors, (10567), 10535 states have call successors, (10567) [2021-11-19 14:48:28,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40412 states to 40412 states and 54315 transitions. [2021-11-19 14:48:28,032 INFO L78 Accepts]: Start accepts. Automaton has 40412 states and 54315 transitions. Word has length 213 [2021-11-19 14:48:28,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:48:28,033 INFO L470 AbstractCegarLoop]: Abstraction has 40412 states and 54315 transitions. [2021-11-19 14:48:28,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-19 14:48:28,034 INFO L276 IsEmpty]: Start isEmpty. Operand 40412 states and 54315 transitions. [2021-11-19 14:48:28,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-19 14:48:28,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:48:28,040 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 16, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:48:28,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:28,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:48:28,263 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 14:48:28,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:48:28,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1159580521, now seen corresponding path program 1 times [2021-11-19 14:48:28,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:48:28,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459526825] [2021-11-19 14:48:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:28,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:48:28,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:48:28,269 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:48:28,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:48:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:30,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:48:30,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:34,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2021-11-19 14:48:34,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:36,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2021-11-19 14:48:36,497 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:48:36,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459526825] [2021-11-19 14:48:36,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459526825] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:48:36,497 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:48:36,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-19 14:48:36,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904819693] [2021-11-19 14:48:36,498 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:48:36,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:48:36,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:48:36,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:48:36,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:48:36,500 INFO L87 Difference]: Start difference. First operand 40412 states and 54315 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (53), 4 states have call predecessors, (53), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-19 14:48:38,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:48:38,607 INFO L93 Difference]: Finished difference Result 40418 states and 54320 transitions. [2021-11-19 14:48:38,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:48:38,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (53), 4 states have call predecessors, (53), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 252 [2021-11-19 14:48:38,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:48:39,031 INFO L225 Difference]: With dead ends: 40418 [2021-11-19 14:48:39,031 INFO L226 Difference]: Without dead ends: 40416 [2021-11-19 14:48:39,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:48:39,048 INFO L933 BasicCegarLoop]: 2757 mSDtfsCounter, 2652 mSDsluCounter, 8242 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2666 SdHoareTripleChecker+Valid, 10999 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:48:39,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2666 Valid, 10999 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:48:39,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40416 states. [2021-11-19 14:48:41,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40416 to 40416. [2021-11-19 14:48:41,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40416 states, 27273 states have (on average 1.2177978220217798) internal successors, (33213), 27743 states have internal predecessors, (33213), 10538 states have call successors, (10538), 2639 states have call predecessors, (10538), 2602 states have return successors, (10567), 10363 states have call predecessors, (10567), 10535 states have call successors, (10567) [2021-11-19 14:48:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40416 states to 40416 states and 54318 transitions. [2021-11-19 14:48:41,599 INFO L78 Accepts]: Start accepts. Automaton has 40416 states and 54318 transitions. Word has length 252 [2021-11-19 14:48:41,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:48:41,602 INFO L470 AbstractCegarLoop]: Abstraction has 40416 states and 54318 transitions. [2021-11-19 14:48:41,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (53), 4 states have call predecessors, (53), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-19 14:48:41,603 INFO L276 IsEmpty]: Start isEmpty. Operand 40416 states and 54318 transitions. [2021-11-19 14:48:41,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-19 14:48:41,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:48:41,612 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 16, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:48:41,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:41,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:48:41,839 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 14:48:41,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:48:41,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1284416519, now seen corresponding path program 1 times [2021-11-19 14:48:41,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:48:41,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579941819] [2021-11-19 14:48:41,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:41,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:48:41,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:48:41,846 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:48:41,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:48:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:43,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:48:43,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:47,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2021-11-19 14:48:47,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:49,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2021-11-19 14:48:49,582 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:48:49,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579941819] [2021-11-19 14:48:49,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579941819] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:48:49,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:48:49,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:48:49,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782993570] [2021-11-19 14:48:49,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:48:49,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:48:49,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:48:49,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:48:49,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:48:49,584 INFO L87 Difference]: Start difference. First operand 40416 states and 54318 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-19 14:48:51,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:48:51,685 INFO L93 Difference]: Finished difference Result 40422 states and 54323 transitions. [2021-11-19 14:48:51,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:48:51,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 257 [2021-11-19 14:48:51,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:48:51,883 INFO L225 Difference]: With dead ends: 40422 [2021-11-19 14:48:51,884 INFO L226 Difference]: Without dead ends: 40420 [2021-11-19 14:48:51,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:48:51,904 INFO L933 BasicCegarLoop]: 2760 mSDtfsCounter, 2684 mSDsluCounter, 5498 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2697 SdHoareTripleChecker+Valid, 8258 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:48:51,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2697 Valid, 8258 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:48:51,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40420 states. [2021-11-19 14:48:54,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40420 to 40420. [2021-11-19 14:48:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40420 states, 27276 states have (on average 1.2177738671359437) internal successors, (33216), 27746 states have internal predecessors, (33216), 10538 states have call successors, (10538), 2640 states have call predecessors, (10538), 2603 states have return successors, (10567), 10363 states have call predecessors, (10567), 10535 states have call successors, (10567) [2021-11-19 14:48:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40420 states to 40420 states and 54321 transitions. [2021-11-19 14:48:54,726 INFO L78 Accepts]: Start accepts. Automaton has 40420 states and 54321 transitions. Word has length 257 [2021-11-19 14:48:54,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:48:54,727 INFO L470 AbstractCegarLoop]: Abstraction has 40420 states and 54321 transitions. [2021-11-19 14:48:54,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-19 14:48:54,727 INFO L276 IsEmpty]: Start isEmpty. Operand 40420 states and 54321 transitions. [2021-11-19 14:48:54,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-19 14:48:54,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:48:54,736 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 16, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:48:54,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:54,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:48:54,959 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 14:48:54,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:48:54,959 INFO L85 PathProgramCache]: Analyzing trace with hash 260797015, now seen corresponding path program 1 times [2021-11-19 14:48:54,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:48:54,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242658883] [2021-11-19 14:48:54,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:54,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:48:54,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:48:54,965 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:48:54,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:48:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:56,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:48:56,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:49:00,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2021-11-19 14:49:00,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:49:02,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2021-11-19 14:49:02,235 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:49:02,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242658883] [2021-11-19 14:49:02,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242658883] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:49:02,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:49:02,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:49:02,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658227554] [2021-11-19 14:49:02,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:49:02,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:49:02,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:49:02,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:49:02,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:49:02,237 INFO L87 Difference]: Start difference. First operand 40420 states and 54321 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-19 14:49:04,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:49:04,158 INFO L93 Difference]: Finished difference Result 40426 states and 54326 transitions. [2021-11-19 14:49:04,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:49:04,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 262 [2021-11-19 14:49:04,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:49:04,338 INFO L225 Difference]: With dead ends: 40426 [2021-11-19 14:49:04,338 INFO L226 Difference]: Without dead ends: 40424 [2021-11-19 14:49:04,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:49:04,357 INFO L933 BasicCegarLoop]: 2760 mSDtfsCounter, 2684 mSDsluCounter, 5498 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2696 SdHoareTripleChecker+Valid, 8258 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:49:04,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2696 Valid, 8258 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:49:04,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40424 states. [2021-11-19 14:49:06,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40424 to 40424. [2021-11-19 14:49:06,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40424 states, 27279 states have (on average 1.2177499175189705) internal successors, (33219), 27749 states have internal predecessors, (33219), 10538 states have call successors, (10538), 2641 states have call predecessors, (10538), 2604 states have return successors, (10567), 10363 states have call predecessors, (10567), 10535 states have call successors, (10567) [2021-11-19 14:49:06,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40424 states to 40424 states and 54324 transitions. [2021-11-19 14:49:06,846 INFO L78 Accepts]: Start accepts. Automaton has 40424 states and 54324 transitions. Word has length 262 [2021-11-19 14:49:06,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:49:06,847 INFO L470 AbstractCegarLoop]: Abstraction has 40424 states and 54324 transitions. [2021-11-19 14:49:06,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-19 14:49:06,847 INFO L276 IsEmpty]: Start isEmpty. Operand 40424 states and 54324 transitions. [2021-11-19 14:49:06,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-19 14:49:06,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:49:06,851 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 16, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:49:06,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:49:07,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:49:07,068 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 14:49:07,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:49:07,069 INFO L85 PathProgramCache]: Analyzing trace with hash -654299705, now seen corresponding path program 1 times [2021-11-19 14:49:07,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:49:07,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865314432] [2021-11-19 14:49:07,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:49:07,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:49:07,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:49:07,072 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:49:07,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:49:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:49:08,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 1682 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:49:08,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:49:12,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1338 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2021-11-19 14:49:12,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:49:14,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1338 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2021-11-19 14:49:14,264 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:49:14,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865314432] [2021-11-19 14:49:14,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865314432] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:49:14,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:49:14,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:49:14,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647318341] [2021-11-19 14:49:14,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:49:14,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:49:14,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:49:14,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:49:14,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:49:14,266 INFO L87 Difference]: Start difference. First operand 40424 states and 54324 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 14:49:16,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:49:16,771 INFO L93 Difference]: Finished difference Result 40430 states and 54329 transitions. [2021-11-19 14:49:16,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:49:16,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 267 [2021-11-19 14:49:16,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:49:16,899 INFO L225 Difference]: With dead ends: 40430 [2021-11-19 14:49:16,899 INFO L226 Difference]: Without dead ends: 40428 [2021-11-19 14:49:16,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:49:16,913 INFO L933 BasicCegarLoop]: 2760 mSDtfsCounter, 2684 mSDsluCounter, 5498 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2695 SdHoareTripleChecker+Valid, 8258 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:49:16,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2695 Valid, 8258 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:49:16,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40428 states. [2021-11-19 14:49:18,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40428 to 40428. [2021-11-19 14:49:18,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40428 states, 27282 states have (on average 1.2177259731691226) internal successors, (33222), 27752 states have internal predecessors, (33222), 10538 states have call successors, (10538), 2642 states have call predecessors, (10538), 2605 states have return successors, (10567), 10363 states have call predecessors, (10567), 10535 states have call successors, (10567) [2021-11-19 14:49:19,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40428 states to 40428 states and 54327 transitions. [2021-11-19 14:49:19,177 INFO L78 Accepts]: Start accepts. Automaton has 40428 states and 54327 transitions. Word has length 267 [2021-11-19 14:49:19,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:49:19,178 INFO L470 AbstractCegarLoop]: Abstraction has 40428 states and 54327 transitions. [2021-11-19 14:49:19,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 14:49:19,179 INFO L276 IsEmpty]: Start isEmpty. Operand 40428 states and 54327 transitions. [2021-11-19 14:49:19,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-19 14:49:19,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:49:19,184 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 16, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:49:19,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:49:19,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:49:19,390 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 14:49:19,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:49:19,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1316737001, now seen corresponding path program 1 times [2021-11-19 14:49:19,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:49:19,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490119216] [2021-11-19 14:49:19,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:49:19,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:49:19,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:49:19,396 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:49:19,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:49:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:49:21,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:49:21,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:49:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1344 trivial. 0 not checked. [2021-11-19 14:49:25,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:49:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1344 trivial. 0 not checked. [2021-11-19 14:49:26,702 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:49:26,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490119216] [2021-11-19 14:49:26,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490119216] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:49:26,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:49:26,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:49:26,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658554551] [2021-11-19 14:49:26,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:49:26,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:49:26,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:49:26,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:49:26,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:49:26,706 INFO L87 Difference]: Start difference. First operand 40428 states and 54327 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 14:49:28,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:49:28,763 INFO L93 Difference]: Finished difference Result 40434 states and 54332 transitions. [2021-11-19 14:49:28,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:49:28,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 272 [2021-11-19 14:49:28,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:49:28,910 INFO L225 Difference]: With dead ends: 40434 [2021-11-19 14:49:28,911 INFO L226 Difference]: Without dead ends: 40432 [2021-11-19 14:49:28,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 537 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 14:49:28,926 INFO L933 BasicCegarLoop]: 2760 mSDtfsCounter, 2684 mSDsluCounter, 5498 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 8258 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:49:28,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2694 Valid, 8258 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:49:28,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40432 states. [2021-11-19 14:49:30,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40432 to 40432. [2021-11-19 14:49:31,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40432 states, 27285 states have (on average 1.2177020340846618) internal successors, (33225), 27755 states have internal predecessors, (33225), 10538 states have call successors, (10538), 2643 states have call predecessors, (10538), 2606 states have return successors, (10567), 10363 states have call predecessors, (10567), 10535 states have call successors, (10567) [2021-11-19 14:49:31,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40432 states to 40432 states and 54330 transitions. [2021-11-19 14:49:31,333 INFO L78 Accepts]: Start accepts. Automaton has 40432 states and 54330 transitions. Word has length 272 [2021-11-19 14:49:31,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:49:31,333 INFO L470 AbstractCegarLoop]: Abstraction has 40432 states and 54330 transitions. [2021-11-19 14:49:31,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 14:49:31,334 INFO L276 IsEmpty]: Start isEmpty. Operand 40432 states and 54330 transitions. [2021-11-19 14:49:31,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-11-19 14:49:31,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:49:31,339 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 16, 6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:49:31,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:49:31,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:49:31,539 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 14:49:31,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:49:31,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2110928775, now seen corresponding path program 1 times [2021-11-19 14:49:31,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:49:31,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545160136] [2021-11-19 14:49:31,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:49:31,543 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:49:31,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:49:31,544 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:49:31,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:49:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:49:33,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 1696 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:49:33,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:49:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1360 trivial. 0 not checked. [2021-11-19 14:49:37,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:49:39,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1360 trivial. 0 not checked. [2021-11-19 14:49:39,073 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:49:39,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545160136] [2021-11-19 14:49:39,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545160136] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:49:39,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:49:39,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:49:39,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144588568] [2021-11-19 14:49:39,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:49:39,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:49:39,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:49:39,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:49:39,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:49:39,075 INFO L87 Difference]: Start difference. First operand 40432 states and 54330 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-19 14:49:41,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:49:41,487 INFO L93 Difference]: Finished difference Result 40438 states and 54335 transitions. [2021-11-19 14:49:41,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:49:41,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 277 [2021-11-19 14:49:41,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:49:41,628 INFO L225 Difference]: With dead ends: 40438 [2021-11-19 14:49:41,628 INFO L226 Difference]: Without dead ends: 40436 [2021-11-19 14:49:41,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:49:41,645 INFO L933 BasicCegarLoop]: 2760 mSDtfsCounter, 2684 mSDsluCounter, 5498 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2693 SdHoareTripleChecker+Valid, 8258 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:49:41,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2693 Valid, 8258 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:49:41,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40436 states. [2021-11-19 14:49:43,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40436 to 40436. [2021-11-19 14:49:43,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40436 states, 27288 states have (on average 1.2176781002638521) internal successors, (33228), 27758 states have internal predecessors, (33228), 10538 states have call successors, (10538), 2644 states have call predecessors, (10538), 2607 states have return successors, (10567), 10363 states have call predecessors, (10567), 10535 states have call successors, (10567) [2021-11-19 14:49:44,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40436 states to 40436 states and 54333 transitions. [2021-11-19 14:49:44,151 INFO L78 Accepts]: Start accepts. Automaton has 40436 states and 54333 transitions. Word has length 277 [2021-11-19 14:49:44,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:49:44,152 INFO L470 AbstractCegarLoop]: Abstraction has 40436 states and 54333 transitions. [2021-11-19 14:49:44,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-19 14:49:44,152 INFO L276 IsEmpty]: Start isEmpty. Operand 40436 states and 54333 transitions. [2021-11-19 14:49:44,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-19 14:49:44,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:49:44,157 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 16, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:49:44,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-19 14:49:44,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:49:44,359 INFO L402 AbstractCegarLoop]: === Iteration 11 === 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 14:49:44,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:49:44,359 INFO L85 PathProgramCache]: Analyzing trace with hash -688118824, now seen corresponding path program 1 times [2021-11-19 14:49:44,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:49:44,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617140565] [2021-11-19 14:49:44,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:49:44,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:49:44,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:49:44,363 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:49:44,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:49:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:49:46,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:49:46,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:49:47,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 1194 trivial. 0 not checked. [2021-11-19 14:49:47,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:49:48,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1314 trivial. 0 not checked. [2021-11-19 14:49:48,483 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:49:48,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617140565] [2021-11-19 14:49:48,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617140565] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:49:48,483 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:49:48,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:49:48,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433561644] [2021-11-19 14:49:48,484 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:49:48,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:49:48,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:49:48,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:49:48,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:49:48,486 INFO L87 Difference]: Start difference. First operand 40436 states and 54333 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 4 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2021-11-19 14:49:50,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:50:04,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:04,140 INFO L93 Difference]: Finished difference Result 108206 states and 145160 transitions. [2021-11-19 14:50:04,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:50:04,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 4 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 278 [2021-11-19 14:50:04,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:04,366 INFO L225 Difference]: With dead ends: 108206 [2021-11-19 14:50:04,367 INFO L226 Difference]: Without dead ends: 67848 [2021-11-19 14:50:04,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:50:04,463 INFO L933 BasicCegarLoop]: 5682 mSDtfsCounter, 4789 mSDsluCounter, 4691 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4789 SdHoareTripleChecker+Valid, 10373 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:04,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4789 Valid, 10373 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1197 Invalid, 1 Unknown, 0 Unchecked, 11.9s Time] [2021-11-19 14:50:04,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67848 states. [2021-11-19 14:50:08,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67848 to 67720. [2021-11-19 14:50:08,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67720 states, 45610 states have (on average 1.2137689103266827) internal successors, (55360), 46340 states have internal predecessors, (55360), 17606 states have call successors, (17606), 4552 states have call predecessors, (17606), 4501 states have return successors, (17639), 17369 states have call predecessors, (17639), 17603 states have call successors, (17639) [2021-11-19 14:50:08,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67720 states to 67720 states and 90605 transitions. [2021-11-19 14:50:08,536 INFO L78 Accepts]: Start accepts. Automaton has 67720 states and 90605 transitions. Word has length 278 [2021-11-19 14:50:08,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:08,537 INFO L470 AbstractCegarLoop]: Abstraction has 67720 states and 90605 transitions. [2021-11-19 14:50:08,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 4 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2021-11-19 14:50:08,538 INFO L276 IsEmpty]: Start isEmpty. Operand 67720 states and 90605 transitions. [2021-11-19 14:50:08,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-19 14:50:08,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:08,542 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 16, 7, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:08,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-19 14:50:08,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:50:08,767 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 14:50:08,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:08,767 INFO L85 PathProgramCache]: Analyzing trace with hash 2003813940, now seen corresponding path program 1 times [2021-11-19 14:50:08,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:50:08,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547570572] [2021-11-19 14:50:08,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:08,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:50:08,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:50:08,771 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:50:08,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:50:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:10,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 14:50:10,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:13,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1427 backedges. 160 proven. 3 refuted. 0 times theorem prover too weak. 1264 trivial. 0 not checked. [2021-11-19 14:50:13,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:16,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1427 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 1383 trivial. 0 not checked. [2021-11-19 14:50:16,119 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:50:16,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547570572] [2021-11-19 14:50:16,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547570572] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:50:16,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1787613529] [2021-11-19 14:50:16,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:16,120 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:50:16,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:50:16,124 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:50:16,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5e95c1-8550-4cd0-8e4e-c5ffdf80d5ad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 14:50:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:17,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:50:17,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1427 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1415 trivial. 0 not checked. [2021-11-19 14:50:22,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:24,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1427 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1415 trivial. 0 not checked. [2021-11-19 14:50:24,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1787613529] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:50:24,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:50:24,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 17, 4] total 27 [2021-11-19 14:50:24,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122578016] [2021-11-19 14:50:24,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:24,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:50:24,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:50:24,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:50:24,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-11-19 14:50:24,585 INFO L87 Difference]: Start difference. First operand 67720 states and 90605 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-19 14:50:28,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:28,511 INFO L93 Difference]: Finished difference Result 76887 states and 100825 transitions. [2021-11-19 14:50:28,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:50:28,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 300 [2021-11-19 14:50:28,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:28,751 INFO L225 Difference]: With dead ends: 76887 [2021-11-19 14:50:28,751 INFO L226 Difference]: Without dead ends: 76885 [2021-11-19 14:50:28,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1199 GetRequests, 1171 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2021-11-19 14:50:28,776 INFO L933 BasicCegarLoop]: 2975 mSDtfsCounter, 1956 mSDsluCounter, 7090 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1964 SdHoareTripleChecker+Valid, 10065 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:28,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1964 Valid, 10065 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:50:28,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76885 states.