./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-dlink-sundance.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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/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-dlink-sundance.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/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 d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:58:44,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:58:44,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:58:45,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:58:45,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:58:45,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:58:45,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:58:45,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:58:45,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:58:45,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:58:45,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:58:45,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:58:45,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:58:45,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:58:45,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:58:45,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:58:45,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:58:45,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:58:45,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:58:45,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:58:45,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:58:45,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:58:45,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:58:45,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:58:45,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:58:45,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:58:45,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:58:45,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:58:45,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:58:45,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:58:45,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:58:45,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:58:45,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:58:45,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:58:45,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:58:45,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:58:45,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:58:45,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:58:45,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:58:45,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:58:45,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:58:45,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:58:45,199 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:58:45,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:58:45,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:58:45,201 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:58:45,201 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:58:45,202 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:58:45,202 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:58:45,202 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:58:45,202 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:58:45,202 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:58:45,210 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:58:45,210 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:58:45,211 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:58:45,211 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:58:45,211 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:58:45,211 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:58:45,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:58:45,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:58:45,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:58:45,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:58:45,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:58:45,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:58:45,213 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:58:45,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:58:45,214 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:58:45,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:58:45,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:58:45,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:58:45,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:58:45,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:58:45,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:58:45,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:58:45,218 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:58:45,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:58:45,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:58:45,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:58:45,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:58:45,219 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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 [2021-11-19 14:58:45,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:58:45,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:58:45,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:58:45,552 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:58:45,553 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:58:45,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2021-11-19 14:58:45,635 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/data/c91dfdbf5/9128beae81544f7abc875b74d1d1d7c4/FLAG61748d963 [2021-11-19 14:58:46,522 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:58:46,523 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2021-11-19 14:58:46,584 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/data/c91dfdbf5/9128beae81544f7abc875b74d1d1d7c4/FLAG61748d963 [2021-11-19 14:58:46,996 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/data/c91dfdbf5/9128beae81544f7abc875b74d1d1d7c4 [2021-11-19 14:58:46,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:58:47,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:58:47,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:58:47,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:58:47,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:58:47,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:58:46" (1/1) ... [2021-11-19 14:58:47,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b4fe5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:47, skipping insertion in model container [2021-11-19 14:58:47,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:58:46" (1/1) ... [2021-11-19 14:58:47,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:58:47,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:58:49,424 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 14:58:49,427 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 14:58:50,566 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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349228,349241] [2021-11-19 14:58:50,569 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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349397,349410] [2021-11-19 14:58:50,570 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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349564,349577] [2021-11-19 14:58:50,578 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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349732,349745] [2021-11-19 14:58:50,616 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:58:50,720 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 14:58:50,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62ef9cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:50, skipping insertion in model container [2021-11-19 14:58:50,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:58:50,721 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:58:50,724 INFO L158 Benchmark]: Toolchain (without parser) took 3722.19ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 96.1MB in the beginning and 118.9MB in the end (delta: -22.8MB). Peak memory consumption was 69.1MB. Max. memory is 16.1GB. [2021-11-19 14:58:50,725 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 134.2MB. Free memory was 90.2MB in the beginning and 90.1MB in the end (delta: 77.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:58:50,726 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3719.85ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 95.7MB in the beginning and 118.9MB in the end (delta: -23.2MB). Peak memory consumption was 69.1MB. Max. memory is 16.1GB. [2021-11-19 14:58:50,728 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 134.2MB. Free memory was 90.2MB in the beginning and 90.1MB in the end (delta: 77.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3719.85ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 95.7MB in the beginning and 118.9MB in the end (delta: -23.2MB). Peak memory consumption was 69.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6182]: 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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/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-dlink-sundance.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/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 d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:58:53,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:58:53,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:58:53,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:58:53,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:58:53,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:58:53,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:58:53,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:58:53,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:58:53,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:58:53,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:58:53,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:58:53,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:58:53,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:58:53,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:58:53,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:58:53,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:58:53,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:58:53,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:58:53,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:58:53,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:58:53,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:58:53,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:58:53,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:58:53,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:58:53,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:58:53,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:58:53,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:58:53,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:58:53,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:58:53,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:58:53,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:58:53,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:58:53,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:58:53,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:58:53,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:58:53,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:58:53,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:58:53,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:58:53,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:58:53,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:58:53,510 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:58:53,574 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:58:53,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:58:53,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:58:53,576 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:58:53,576 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:58:53,577 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:58:53,577 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:58:53,577 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:58:53,578 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:58:53,578 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:58:53,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:58:53,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:58:53,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:58:53,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:58:53,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:58:53,582 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:58:53,583 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:58:53,583 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:58:53,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:58:53,583 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:58:53,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:58:53,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:58:53,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:58:53,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:58:53,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:58:53,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:58:53,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:58:53,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:58:53,586 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:58:53,586 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:58:53,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:58:53,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:58:53,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:58:53,587 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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 [2021-11-19 14:58:54,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:58:54,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:58:54,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:58:54,065 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:58:54,066 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:58:54,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2021-11-19 14:58:54,159 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/data/a2fb5b36b/52457b84f09644e48e0097b52bd81bba/FLAGc140f34e0 [2021-11-19 14:58:55,275 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:58:55,277 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2021-11-19 14:58:55,352 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/data/a2fb5b36b/52457b84f09644e48e0097b52bd81bba/FLAGc140f34e0 [2021-11-19 14:58:55,521 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/data/a2fb5b36b/52457b84f09644e48e0097b52bd81bba [2021-11-19 14:58:55,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:58:55,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:58:55,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:58:55,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:58:55,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:58:55,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:58:55" (1/1) ... [2021-11-19 14:58:55,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c05d79d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:55, skipping insertion in model container [2021-11-19 14:58:55,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:58:55" (1/1) ... [2021-11-19 14:58:55,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:58:55,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:58:59,846 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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349228,349241] [2021-11-19 14:58:59,849 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349397,349410] [2021-11-19 14:58:59,850 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349564,349577] [2021-11-19 14:58:59,851 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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349732,349745] [2021-11-19 14:58:59,888 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:59:00,003 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:59:00,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:59:00,612 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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349228,349241] [2021-11-19 14:59:00,618 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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349397,349410] [2021-11-19 14:59:00,619 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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349564,349577] [2021-11-19 14:59:00,620 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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349732,349745] [2021-11-19 14:59:00,628 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:59:00,680 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:59:01,232 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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349228,349241] [2021-11-19 14:59:01,233 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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349397,349410] [2021-11-19 14:59:01,234 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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349564,349577] [2021-11-19 14:59:01,234 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_6b038d57-f5eb-453c-9432-1bfcf8ae4418/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349732,349745] [2021-11-19 14:59:01,248 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:59:01,580 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:59:01,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:59:01 WrapperNode [2021-11-19 14:59:01,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:59:01,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:59:01,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:59:01,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:59:01,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:59:01" (1/1) ... [2021-11-19 14:59:01,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:59:01" (1/1) ... [2021-11-19 14:59:01,988 INFO L137 Inliner]: procedures = 484, calls = 2162, calls flagged for inlining = 234, calls inlined = 217, statements flattened = 5291 [2021-11-19 14:59:01,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:59:01,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:59:01,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:59:01,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:59:02,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:59:01" (1/1) ... [2021-11-19 14:59:02,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:59:01" (1/1) ... [2021-11-19 14:59:02,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:59:01" (1/1) ... [2021-11-19 14:59:02,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:59:01" (1/1) ... [2021-11-19 14:59:02,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:59:01" (1/1) ... [2021-11-19 14:59:02,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:59:01" (1/1) ... [2021-11-19 14:59:02,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:59:01" (1/1) ... [2021-11-19 14:59:02,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:59:02,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:59:02,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:59:02,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:59:02,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:59:01" (1/1) ... [2021-11-19 14:59:02,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:59:02,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:59:02,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:59:02,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:59:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure check_if_running [2021-11-19 14:59:02,366 INFO L138 BoogieDeclarations]: Found implementation of procedure check_if_running [2021-11-19 14:59:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-19 14:59:02,367 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-19 14:59:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-19 14:59:02,367 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-19 14:59:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 14:59:02,367 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 14:59:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-19 14:59:02,368 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-19 14:59:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 14:59:02,368 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 14:59:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:59:02,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:59:02,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:59:02,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:59:02,369 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 14:59:02,369 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 14:59:02,369 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-19 14:59:02,369 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-19 14:59:02,370 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-19 14:59:02,370 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-19 14:59:02,370 INFO L130 BoogieDeclarations]: Found specification of procedure reset_tx [2021-11-19 14:59:02,370 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_tx [2021-11-19 14:59:02,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_66 [2021-11-19 14:59:02,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_66 [2021-11-19 14:59:02,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_76 [2021-11-19 14:59:02,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_76 [2021-11-19 14:59:02,372 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-19 14:59:02,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-19 14:59:02,372 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-19 14:59:02,372 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-19 14:59:02,372 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-19 14:59:02,372 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-19 14:59:02,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 14:59:02,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 14:59:02,373 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-19 14:59:02,374 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-19 14:59:02,374 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-19 14:59:02,374 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-19 14:59:02,374 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-19 14:59:02,375 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-19 14:59:02,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 14:59:02,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 14:59:02,376 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-19 14:59:02,377 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-19 14:59:02,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:59:02,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_69 [2021-11-19 14:59:02,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_69 [2021-11-19 14:59:02,378 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-11-19 14:59:02,378 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-11-19 14:59:02,378 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-19 14:59:02,379 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-19 14:59:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:59:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:59:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:59:02,380 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 14:59:02,380 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 14:59:02,380 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 14:59:02,380 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 14:59:02,381 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-19 14:59:02,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-19 14:59:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-19 14:59:02,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-19 14:59:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 14:59:02,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 14:59:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-19 14:59:02,383 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-19 14:59:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 14:59:02,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 14:59:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 14:59:02,383 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 14:59:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-19 14:59:02,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-19 14:59:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure check_duplex [2021-11-19 14:59:02,385 INFO L138 BoogieDeclarations]: Found implementation of procedure check_duplex [2021-11-19 14:59:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 14:59:02,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 14:59:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-19 14:59:02,386 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-19 14:59:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 14:59:02,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 14:59:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure tx_timeout [2021-11-19 14:59:02,387 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_timeout [2021-11-19 14:59:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_resume [2021-11-19 14:59:02,387 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_resume [2021-11-19 14:59:02,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:59:02,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:59:02,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:59:02,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 14:59:02,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 14:59:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 14:59:02,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 14:59:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-19 14:59:02,389 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-19 14:59:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:59:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 14:59:02,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 14:59:02,390 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 14:59:02,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 14:59:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:59:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:59:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:59:02,394 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-19 14:59:02,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-19 14:59:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:59:02,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:59:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:59:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-19 14:59:02,398 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-19 14:59:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-19 14:59:02,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-19 14:59:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-19 14:59:02,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-19 14:59:02,406 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 14:59:02,406 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 14:59:02,406 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-19 14:59:02,407 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-19 14:59:02,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-19 14:59:02,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-19 14:59:02,407 INFO L130 BoogieDeclarations]: Found specification of procedure __set_mac_addr [2021-11-19 14:59:02,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_mac_addr [2021-11-19 14:59:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:59:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-19 14:59:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-19 14:59:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:59:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:59:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_sundance_exit_14_2 [2021-11-19 14:59:02,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_sundance_exit_14_2 [2021-11-19 14:59:02,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:59:02,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:59:02,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:59:02,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:59:02,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:59:02,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:59:02,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 14:59:02,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 14:59:02,410 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_close [2021-11-19 14:59:02,410 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_close [2021-11-19 14:59:02,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:59:02,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:59:02,411 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats [2021-11-19 14:59:02,411 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats [2021-11-19 14:59:02,411 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_poll_controller [2021-11-19 14:59:02,411 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_poll_controller [2021-11-19 14:59:02,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-19 14:59:02,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-19 14:59:02,412 INFO L130 BoogieDeclarations]: Found specification of procedure nway_reset [2021-11-19 14:59:02,412 INFO L138 BoogieDeclarations]: Found implementation of procedure nway_reset [2021-11-19 14:59:02,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-19 14:59:02,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-19 14:59:02,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:59:02,412 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:59:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 14:59:02,413 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 14:59:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-19 14:59:02,413 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-19 14:59:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-19 14:59:02,413 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-19 14:59:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-19 14:59:02,414 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-19 14:59:02,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:59:02,414 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-19 14:59:02,414 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-19 14:59:02,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_75 [2021-11-19 14:59:02,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_75 [2021-11-19 14:59:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:59:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-19 14:59:02,415 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-19 14:59:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-19 14:59:02,415 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-19 14:59:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:59:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:59:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:59:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:59:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:59:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure intr_handler [2021-11-19 14:59:02,418 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_handler [2021-11-19 14:59:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-19 14:59:02,418 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-19 14:59:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-19 14:59:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-19 14:59:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 14:59:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 14:59:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-19 14:59:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-19 14:59:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 14:59:02,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 14:59:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-19 14:59:02,420 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-19 14:59:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2021-11-19 14:59:02,420 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2021-11-19 14:59:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_open [2021-11-19 14:59:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_open [2021-11-19 14:59:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_reset [2021-11-19 14:59:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_reset [2021-11-19 14:59:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-19 14:59:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-19 14:59:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-19 14:59:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-19 14:59:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 14:59:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 14:59:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 14:59:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 14:59:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 14:59:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 14:59:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_remove1 [2021-11-19 14:59:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_remove1 [2021-11-19 14:59:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_70 [2021-11-19 14:59:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_70 [2021-11-19 14:59:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:59:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:59:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:59:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:59:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:59:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:59:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-19 14:59:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-19 14:59:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure refill_rx [2021-11-19 14:59:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure refill_rx [2021-11-19 14:59:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 14:59:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 14:59:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-19 14:59:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-19 14:59:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-19 14:59:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-19 14:59:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-19 14:59:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-19 14:59:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 14:59:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 14:59:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-19 14:59:02,431 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-19 14:59:03,738 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:59:03,747 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:59:09,940 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 15:00:53,120 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 15:00:53,223 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:00:53,247 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:00:53,248 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-19 15:00:53,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:00:53 BoogieIcfgContainer [2021-11-19 15:00:53,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:00:53,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:00:53,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:00:53,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:00:53,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:58:55" (1/3) ... [2021-11-19 15:00:53,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@528bb192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:00:53, skipping insertion in model container [2021-11-19 15:00:53,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:59:01" (2/3) ... [2021-11-19 15:00:53,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@528bb192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:00:53, skipping insertion in model container [2021-11-19 15:00:53,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:00:53" (3/3) ... [2021-11-19 15:00:53,263 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2021-11-19 15:00:53,268 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:00:53,268 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 15:00:53,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:00:53,359 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 15:00:53,360 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 15:00:53,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 1917 states, 1307 states have (on average 1.2685539403213466) internal successors, (1658), 1345 states have internal predecessors, (1658), 511 states have call successors, (511), 101 states have call predecessors, (511), 100 states have return successors, (505), 498 states have call predecessors, (505), 505 states have call successors, (505) [2021-11-19 15:00:53,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-19 15:00:53,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:00:53,459 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:00:53,459 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 15:00:53,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:00:53,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1904040031, now seen corresponding path program 1 times [2021-11-19 15:00:53,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:00:53,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440694565] [2021-11-19 15:00:53,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:00:53,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:00:53,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:00:53,489 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:00:53,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:00:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:00:55,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 1644 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:00:55,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:00:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2021-11-19 15:00:56,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:00:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-11-19 15:00:56,926 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:00:56,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440694565] [2021-11-19 15:00:56,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440694565] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:00:56,927 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:00:56,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:00:56,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782616445] [2021-11-19 15:00:56,930 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:00:56,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:00:56,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:00:56,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:00:56,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:00:56,980 INFO L87 Difference]: Start difference. First operand has 1917 states, 1307 states have (on average 1.2685539403213466) internal successors, (1658), 1345 states have internal predecessors, (1658), 511 states have call successors, (511), 101 states have call predecessors, (511), 100 states have return successors, (505), 498 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-19 15:00:59,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:01:10,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:10,581 INFO L93 Difference]: Finished difference Result 7380 states and 10506 transitions. [2021-11-19 15:01:10,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:01:10,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 171 [2021-11-19 15:01:10,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:10,667 INFO L225 Difference]: With dead ends: 7380 [2021-11-19 15:01:10,667 INFO L226 Difference]: Without dead ends: 5477 [2021-11-19 15:01:10,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:01:10,695 INFO L933 BasicCegarLoop]: 3567 mSDtfsCounter, 5034 mSDsluCounter, 4668 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5034 SdHoareTripleChecker+Valid, 8235 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:10,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5034 Valid, 8235 Invalid, 1022 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 1002 Invalid, 1 Unknown, 0 Unchecked, 13.0s Time] [2021-11-19 15:01:10,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5477 states. [2021-11-19 15:01:11,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5477 to 5450. [2021-11-19 15:01:11,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5450 states, 3743 states have (on average 1.263959390862944) internal successors, (4731), 3841 states have internal predecessors, (4731), 1411 states have call successors, (1411), 294 states have call predecessors, (1411), 293 states have return successors, (1407), 1386 states have call predecessors, (1407), 1407 states have call successors, (1407) [2021-11-19 15:01:11,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 7549 transitions. [2021-11-19 15:01:11,186 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 7549 transitions. Word has length 171 [2021-11-19 15:01:11,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:11,188 INFO L470 AbstractCegarLoop]: Abstraction has 5450 states and 7549 transitions. [2021-11-19 15:01:11,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-19 15:01:11,188 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 7549 transitions. [2021-11-19 15:01:11,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-19 15:01:11,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:11,195 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:01:11,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:11,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:11,419 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 15:01:11,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:11,420 INFO L85 PathProgramCache]: Analyzing trace with hash -702002883, now seen corresponding path program 1 times [2021-11-19 15:01:11,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:11,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362961376] [2021-11-19 15:01:11,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:11,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:11,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:11,429 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:11,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:01:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:13,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 1684 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:01:13,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:14,054 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2021-11-19 15:01:14,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:14,666 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-11-19 15:01:14,666 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:14,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362961376] [2021-11-19 15:01:14,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362961376] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:14,667 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:01:14,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:01:14,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077576236] [2021-11-19 15:01:14,668 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:14,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:01:14,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:14,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:01:14,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:01:14,671 INFO L87 Difference]: Start difference. First operand 5450 states and 7549 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-19 15:01:16,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:01:18,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:18,827 INFO L93 Difference]: Finished difference Result 15379 states and 21293 transitions. [2021-11-19 15:01:18,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:01:18,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 180 [2021-11-19 15:01:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:18,914 INFO L225 Difference]: With dead ends: 15379 [2021-11-19 15:01:18,914 INFO L226 Difference]: Without dead ends: 9960 [2021-11-19 15:01:18,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 357 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 15:01:18,946 INFO L933 BasicCegarLoop]: 3062 mSDtfsCounter, 2158 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 5578 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:18,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2158 Valid, 5578 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2021-11-19 15:01:18,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9960 states. [2021-11-19 15:01:19,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9960 to 9928. [2021-11-19 15:01:19,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9928 states, 6736 states have (on average 1.2602434679334917) internal successors, (8489), 6930 states have internal predecessors, (8489), 2619 states have call successors, (2619), 574 states have call predecessors, (2619), 570 states have return successors, (2624), 2561 states have call predecessors, (2624), 2615 states have call successors, (2624) [2021-11-19 15:01:19,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 13732 transitions. [2021-11-19 15:01:19,630 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 13732 transitions. Word has length 180 [2021-11-19 15:01:19,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:19,633 INFO L470 AbstractCegarLoop]: Abstraction has 9928 states and 13732 transitions. [2021-11-19 15:01:19,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-19 15:01:19,634 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 13732 transitions. [2021-11-19 15:01:19,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-19 15:01:19,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:19,644 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:01:19,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:19,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:19,859 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 15:01:19,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:19,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1722043541, now seen corresponding path program 1 times [2021-11-19 15:01:19,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:19,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466703623] [2021-11-19 15:01:19,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:19,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:19,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:19,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:19,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:01:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:21,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:01:21,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:22,821 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2021-11-19 15:01:22,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:23,701 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-11-19 15:01:23,703 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:23,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466703623] [2021-11-19 15:01:23,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466703623] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:23,703 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:01:23,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:01:23,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778121419] [2021-11-19 15:01:23,704 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:23,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:01:23,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:23,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:01:23,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:01:23,707 INFO L87 Difference]: Start difference. First operand 9928 states and 13732 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-19 15:01:25,913 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 15:01:43,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:43,281 INFO L93 Difference]: Finished difference Result 38671 states and 53614 transitions. [2021-11-19 15:01:43,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:01:43,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 198 [2021-11-19 15:01:43,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:43,483 INFO L225 Difference]: With dead ends: 38671 [2021-11-19 15:01:43,484 INFO L226 Difference]: Without dead ends: 28774 [2021-11-19 15:01:43,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 392 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 15:01:43,548 INFO L933 BasicCegarLoop]: 3654 mSDtfsCounter, 6604 mSDsluCounter, 4016 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 986 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6604 SdHoareTripleChecker+Valid, 7670 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 986 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:43,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6604 Valid, 7670 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [986 Valid, 971 Invalid, 1 Unknown, 0 Unchecked, 18.6s Time] [2021-11-19 15:01:43,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28774 states. [2021-11-19 15:01:44,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28774 to 28698. [2021-11-19 15:01:45,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28698 states, 19470 states have (on average 1.2638418079096045) internal successors, (24607), 20084 states have internal predecessors, (24607), 7547 states have call successors, (7547), 1706 states have call predecessors, (7547), 1678 states have return successors, (7648), 7309 states have call predecessors, (7648), 7543 states have call successors, (7648) [2021-11-19 15:01:45,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28698 states to 28698 states and 39802 transitions. [2021-11-19 15:01:45,150 INFO L78 Accepts]: Start accepts. Automaton has 28698 states and 39802 transitions. Word has length 198 [2021-11-19 15:01:45,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:45,150 INFO L470 AbstractCegarLoop]: Abstraction has 28698 states and 39802 transitions. [2021-11-19 15:01:45,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-19 15:01:45,151 INFO L276 IsEmpty]: Start isEmpty. Operand 28698 states and 39802 transitions. [2021-11-19 15:01:45,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-19 15:01:45,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:45,157 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 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] [2021-11-19 15:01:45,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:45,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:45,383 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 15:01:45,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:45,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1666697341, now seen corresponding path program 1 times [2021-11-19 15:01:45,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:45,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512176313] [2021-11-19 15:01:45,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:45,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:45,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:45,388 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:45,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:01:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:47,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 1810 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:01:47,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2021-11-19 15:01:48,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:49,645 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2021-11-19 15:01:49,645 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:49,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512176313] [2021-11-19 15:01:49,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512176313] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:49,646 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:01:49,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:01:49,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374321493] [2021-11-19 15:01:49,646 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:49,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:01:49,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:49,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:01:49,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:01:49,647 INFO L87 Difference]: Start difference. First operand 28698 states and 39802 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-19 15:01:51,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:11,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:11,438 INFO L93 Difference]: Finished difference Result 70041 states and 96283 transitions. [2021-11-19 15:02:11,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:02:11,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 210 [2021-11-19 15:02:11,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:11,633 INFO L225 Difference]: With dead ends: 70041 [2021-11-19 15:02:11,633 INFO L226 Difference]: Without dead ends: 41374 [2021-11-19 15:02:11,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 416 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 15:02:11,741 INFO L933 BasicCegarLoop]: 4042 mSDtfsCounter, 4197 mSDsluCounter, 4232 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4197 SdHoareTripleChecker+Valid, 8274 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:11,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4197 Valid, 8274 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1071 Invalid, 1 Unknown, 0 Unchecked, 20.4s Time] [2021-11-19 15:02:11,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41374 states. [2021-11-19 15:02:13,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41374 to 41302. [2021-11-19 15:02:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41302 states, 28440 states have (on average 1.256926863572433) internal successors, (35747), 29209 states have internal predecessors, (35747), 10201 states have call successors, (10201), 2707 states have call predecessors, (10201), 2658 states have return successors, (10267), 9895 states have call predecessors, (10267), 10197 states have call successors, (10267) [2021-11-19 15:02:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41302 states to 41302 states and 56215 transitions. [2021-11-19 15:02:13,751 INFO L78 Accepts]: Start accepts. Automaton has 41302 states and 56215 transitions. Word has length 210 [2021-11-19 15:02:13,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:13,751 INFO L470 AbstractCegarLoop]: Abstraction has 41302 states and 56215 transitions. [2021-11-19 15:02:13,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-19 15:02:13,752 INFO L276 IsEmpty]: Start isEmpty. Operand 41302 states and 56215 transitions. [2021-11-19 15:02:13,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-19 15:02:13,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:13,758 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:13,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:13,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:13,971 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 15:02:13,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:13,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1764444987, now seen corresponding path program 1 times [2021-11-19 15:02:13,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:13,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860810025] [2021-11-19 15:02:13,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:13,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:13,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:13,976 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:13,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:02:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:15,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:02:15,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2021-11-19 15:02:23,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2021-11-19 15:02:26,152 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:26,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860810025] [2021-11-19 15:02:26,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860810025] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:26,152 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:26,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-19 15:02:26,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77685484] [2021-11-19 15:02:26,153 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:26,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:02:26,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:26,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:02:26,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:02:26,155 INFO L87 Difference]: Start difference. First operand 41302 states and 56215 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (47), 4 states have call predecessors, (47), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-19 15:02:28,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:28,848 INFO L93 Difference]: Finished difference Result 41308 states and 56220 transitions. [2021-11-19 15:02:28,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:02:28,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (47), 4 states have call predecessors, (47), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 227 [2021-11-19 15:02:28,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:29,019 INFO L225 Difference]: With dead ends: 41308 [2021-11-19 15:02:29,019 INFO L226 Difference]: Without dead ends: 41306 [2021-11-19 15:02:29,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:02:29,036 INFO L933 BasicCegarLoop]: 2617 mSDtfsCounter, 2517 mSDsluCounter, 10441 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2529 SdHoareTripleChecker+Valid, 13058 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:29,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2529 Valid, 13058 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 15:02:29,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41306 states. [2021-11-19 15:02:31,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41306 to 41306. [2021-11-19 15:02:31,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41306 states, 28443 states have (on average 1.256899764441163) internal successors, (35750), 29212 states have internal predecessors, (35750), 10201 states have call successors, (10201), 2708 states have call predecessors, (10201), 2659 states have return successors, (10267), 9895 states have call predecessors, (10267), 10197 states have call successors, (10267) [2021-11-19 15:02:31,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41306 states to 41306 states and 56218 transitions. [2021-11-19 15:02:31,185 INFO L78 Accepts]: Start accepts. Automaton has 41306 states and 56218 transitions. Word has length 227 [2021-11-19 15:02:31,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:31,186 INFO L470 AbstractCegarLoop]: Abstraction has 41306 states and 56218 transitions. [2021-11-19 15:02:31,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (47), 4 states have call predecessors, (47), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-19 15:02:31,186 INFO L276 IsEmpty]: Start isEmpty. Operand 41306 states and 56218 transitions. [2021-11-19 15:02:31,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-19 15:02:31,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:31,192 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:31,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:31,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:31,415 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 15:02:31,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:31,416 INFO L85 PathProgramCache]: Analyzing trace with hash -692345477, now seen corresponding path program 1 times [2021-11-19 15:02:31,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:31,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693794562] [2021-11-19 15:02:31,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:31,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:31,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:31,419 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:31,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:02:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:33,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:02:33,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2021-11-19 15:02:40,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:43,654 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2021-11-19 15:02:43,654 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:43,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693794562] [2021-11-19 15:02:43,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693794562] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:02:43,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:02:43,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 15:02:43,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627408659] [2021-11-19 15:02:43,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:43,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:02:43,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:43,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:02:43,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:02:43,657 INFO L87 Difference]: Start difference. First operand 41306 states and 56218 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 15:02:45,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:45,643 INFO L93 Difference]: Finished difference Result 41312 states and 56223 transitions. [2021-11-19 15:02:45,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:02:45,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 232 [2021-11-19 15:02:45,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:45,814 INFO L225 Difference]: With dead ends: 41312 [2021-11-19 15:02:45,818 INFO L226 Difference]: Without dead ends: 41310 [2021-11-19 15:02:45,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:02:45,836 INFO L933 BasicCegarLoop]: 2620 mSDtfsCounter, 2548 mSDsluCounter, 5220 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2559 SdHoareTripleChecker+Valid, 7840 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:45,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2559 Valid, 7840 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:02:45,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41310 states. [2021-11-19 15:02:47,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41310 to 41310. [2021-11-19 15:02:47,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41310 states, 28446 states have (on average 1.2568726710258034) internal successors, (35753), 29215 states have internal predecessors, (35753), 10201 states have call successors, (10201), 2709 states have call predecessors, (10201), 2660 states have return successors, (10267), 9895 states have call predecessors, (10267), 10197 states have call successors, (10267) [2021-11-19 15:02:47,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41310 states to 41310 states and 56221 transitions. [2021-11-19 15:02:47,927 INFO L78 Accepts]: Start accepts. Automaton has 41310 states and 56221 transitions. Word has length 232 [2021-11-19 15:02:47,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:47,928 INFO L470 AbstractCegarLoop]: Abstraction has 41310 states and 56221 transitions. [2021-11-19 15:02:47,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 15:02:47,928 INFO L276 IsEmpty]: Start isEmpty. Operand 41310 states and 56221 transitions. [2021-11-19 15:02:47,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-19 15:02:47,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:47,935 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:47,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:48,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:48,159 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 15:02:48,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:48,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1482280517, now seen corresponding path program 1 times [2021-11-19 15:02:48,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:48,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978578062] [2021-11-19 15:02:48,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:48,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:48,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:48,162 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:48,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:02:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:49,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:02:49,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:57,502 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2021-11-19 15:02:57,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2021-11-19 15:03:00,513 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:00,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978578062] [2021-11-19 15:03:00,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978578062] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:03:00,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:03:00,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 15:03:00,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154032768] [2021-11-19 15:03:00,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:00,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:03:00,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:00,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:03:00,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:03:00,515 INFO L87 Difference]: Start difference. First operand 41310 states and 56221 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-19 15:03:02,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:02,718 INFO L93 Difference]: Finished difference Result 41316 states and 56226 transitions. [2021-11-19 15:03:02,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:03:02,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 237 [2021-11-19 15:03:02,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:02,878 INFO L225 Difference]: With dead ends: 41316 [2021-11-19 15:03:02,878 INFO L226 Difference]: Without dead ends: 41314 [2021-11-19 15:03:02,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:03:02,898 INFO L933 BasicCegarLoop]: 2620 mSDtfsCounter, 2548 mSDsluCounter, 5220 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 7840 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:02,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2558 Valid, 7840 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:03:02,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41314 states. [2021-11-19 15:03:04,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41314 to 41314. [2021-11-19 15:03:04,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41314 states, 28449 states have (on average 1.2568455833245458) internal successors, (35756), 29218 states have internal predecessors, (35756), 10201 states have call successors, (10201), 2710 states have call predecessors, (10201), 2661 states have return successors, (10267), 9895 states have call predecessors, (10267), 10197 states have call successors, (10267) [2021-11-19 15:03:05,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41314 states to 41314 states and 56224 transitions. [2021-11-19 15:03:05,058 INFO L78 Accepts]: Start accepts. Automaton has 41314 states and 56224 transitions. Word has length 237 [2021-11-19 15:03:05,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:05,059 INFO L470 AbstractCegarLoop]: Abstraction has 41314 states and 56224 transitions. [2021-11-19 15:03:05,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-19 15:03:05,059 INFO L276 IsEmpty]: Start isEmpty. Operand 41314 states and 56224 transitions. [2021-11-19 15:03:05,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-19 15:03:05,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:05,064 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:05,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:05,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:05,287 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 15:03:05,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:05,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1004229765, now seen corresponding path program 1 times [2021-11-19 15:03:05,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:05,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645026799] [2021-11-19 15:03:05,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:05,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:05,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:05,290 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:05,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:03:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:07,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:03:07,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2021-11-19 15:03:14,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2021-11-19 15:03:17,714 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:17,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645026799] [2021-11-19 15:03:17,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645026799] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:03:17,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:03:17,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 15:03:17,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619318677] [2021-11-19 15:03:17,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:17,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:03:17,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:17,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:03:17,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:03:17,717 INFO L87 Difference]: Start difference. First operand 41314 states and 56224 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-19 15:03:20,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:20,007 INFO L93 Difference]: Finished difference Result 41320 states and 56229 transitions. [2021-11-19 15:03:20,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:03:20,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 242 [2021-11-19 15:03:20,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:20,103 INFO L225 Difference]: With dead ends: 41320 [2021-11-19 15:03:20,103 INFO L226 Difference]: Without dead ends: 41318 [2021-11-19 15:03:20,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:03:20,115 INFO L933 BasicCegarLoop]: 2620 mSDtfsCounter, 2548 mSDsluCounter, 5220 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2557 SdHoareTripleChecker+Valid, 7840 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:20,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2557 Valid, 7840 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:03:20,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41318 states. [2021-11-19 15:03:21,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41318 to 41318. [2021-11-19 15:03:22,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41318 states, 28452 states have (on average 1.2568185013355828) internal successors, (35759), 29221 states have internal predecessors, (35759), 10201 states have call successors, (10201), 2711 states have call predecessors, (10201), 2662 states have return successors, (10267), 9895 states have call predecessors, (10267), 10197 states have call successors, (10267) [2021-11-19 15:03:22,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41318 states to 41318 states and 56227 transitions. [2021-11-19 15:03:22,139 INFO L78 Accepts]: Start accepts. Automaton has 41318 states and 56227 transitions. Word has length 242 [2021-11-19 15:03:22,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:22,140 INFO L470 AbstractCegarLoop]: Abstraction has 41318 states and 56227 transitions. [2021-11-19 15:03:22,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-19 15:03:22,140 INFO L276 IsEmpty]: Start isEmpty. Operand 41318 states and 56227 transitions. [2021-11-19 15:03:22,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-19 15:03:22,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:22,147 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 4, 4, 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] [2021-11-19 15:03:22,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:22,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:22,371 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 15:03:22,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:22,371 INFO L85 PathProgramCache]: Analyzing trace with hash 205526547, now seen corresponding path program 1 times [2021-11-19 15:03:22,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:22,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513936780] [2021-11-19 15:03:22,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:22,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:22,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:22,374 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:22,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 15:03:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:24,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1844 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:03:24,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:25,480 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2021-11-19 15:03:25,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:26,560 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2021-11-19 15:03:26,561 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:26,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513936780] [2021-11-19 15:03:26,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513936780] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:03:26,561 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:03:26,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:03:26,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149569030] [2021-11-19 15:03:26,561 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:26,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:03:26,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:26,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:03:26,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:03:26,563 INFO L87 Difference]: Start difference. First operand 41318 states and 56227 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) [2021-11-19 15:03:28,751 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 15:03:50,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:50,150 INFO L93 Difference]: Finished difference Result 122071 states and 166146 transitions. [2021-11-19 15:03:50,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:03:50,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) Word has length 258 [2021-11-19 15:03:50,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:50,555 INFO L225 Difference]: With dead ends: 122071 [2021-11-19 15:03:50,555 INFO L226 Difference]: Without dead ends: 81173 [2021-11-19 15:03:50,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 512 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 15:03:50,662 INFO L933 BasicCegarLoop]: 4718 mSDtfsCounter, 5055 mSDsluCounter, 4576 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5055 SdHoareTripleChecker+Valid, 9294 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:50,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5055 Valid, 9294 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1027 Invalid, 1 Unknown, 0 Unchecked, 19.7s Time] [2021-11-19 15:03:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81173 states. [2021-11-19 15:03:54,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81173 to 81130. [2021-11-19 15:03:54,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81130 states, 55904 states have (on average 1.255205352032055) internal successors, (70171), 57371 states have internal predecessors, (70171), 19989 states have call successors, (19989), 5331 states have call predecessors, (19989), 5234 states have return successors, (20125), 19445 states have call predecessors, (20125), 19985 states have call successors, (20125) [2021-11-19 15:03:55,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81130 states to 81130 states and 110285 transitions. [2021-11-19 15:03:55,031 INFO L78 Accepts]: Start accepts. Automaton has 81130 states and 110285 transitions. Word has length 258 [2021-11-19 15:03:55,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:55,261 INFO L470 AbstractCegarLoop]: Abstraction has 81130 states and 110285 transitions. [2021-11-19 15:03:55,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) [2021-11-19 15:03:55,262 INFO L276 IsEmpty]: Start isEmpty. Operand 81130 states and 110285 transitions. [2021-11-19 15:03:55,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-19 15:03:55,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:55,268 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:55,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:55,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:55,469 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 15:03:55,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:55,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1366011290, now seen corresponding path program 1 times [2021-11-19 15:03:55,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:55,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986986911] [2021-11-19 15:03:55,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:55,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:55,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:55,473 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:55,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b038d57-f5eb-453c-9432-1bfcf8ae4418/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:03:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:57,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 1845 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:03:57,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:58,686 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2021-11-19 15:03:58,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2021-11-19 15:03:59,572 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:59,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986986911] [2021-11-19 15:03:59,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986986911] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:03:59,572 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:03:59,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:03:59,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790280575] [2021-11-19 15:03:59,573 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:59,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:03:59,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:59,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:03:59,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:03:59,574 INFO L87 Difference]: Start difference. First operand 81130 states and 110285 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) [2021-11-19 15:04:01,763 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 15:04:26,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:26,382 INFO L93 Difference]: Finished difference Result 181776 states and 247123 transitions. [2021-11-19 15:04:26,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:04:26,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) Word has length 259 [2021-11-19 15:04:26,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:26,725 INFO L225 Difference]: With dead ends: 181776 [2021-11-19 15:04:26,725 INFO L226 Difference]: Without dead ends: 101066 [2021-11-19 15:04:26,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 514 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 15:04:26,893 INFO L933 BasicCegarLoop]: 5575 mSDtfsCounter, 5084 mSDsluCounter, 4625 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5084 SdHoareTripleChecker+Valid, 10200 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:26,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5084 Valid, 10200 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1030 Invalid, 1 Unknown, 0 Unchecked, 21.2s Time] [2021-11-19 15:04:26,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101066 states.