./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-smsc-epic100.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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/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-smsc-epic100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/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 08a377ea5583d5b51d35b7880dbbb43c3783bcaabfa79c83938a2c0ac78e3f7a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:29:46,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:29:46,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:29:46,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:29:46,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:29:46,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:29:46,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:29:46,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:29:46,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:29:46,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:29:46,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:29:46,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:29:46,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:29:46,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:29:46,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:29:46,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:29:46,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:29:46,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:29:46,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:29:46,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:29:46,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:29:46,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:29:46,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:29:46,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:29:46,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:29:46,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:29:46,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:29:46,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:29:46,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:29:46,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:29:46,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:29:46,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:29:46,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:29:46,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:29:46,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:29:46,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:29:46,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:29:46,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:29:46,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:29:46,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:29:46,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:29:46,543 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:29:46,567 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:29:46,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:29:46,568 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:29:46,568 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:29:46,568 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:29:46,568 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:29:46,569 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:29:46,569 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:29:46,569 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:29:46,569 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:29:46,569 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:29:46,570 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:29:46,570 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:29:46,570 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:29:46,570 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:29:46,570 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:29:46,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:29:46,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:29:46,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:29:46,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:29:46,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:29:46,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:29:46,572 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:29:46,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:29:46,573 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:29:46,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:29:46,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:29:46,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:29:46,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:29:46,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:29:46,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:29:46,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:29:46,574 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:29:46,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:29:46,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:29:46,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:29:46,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:29:46,575 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08a377ea5583d5b51d35b7880dbbb43c3783bcaabfa79c83938a2c0ac78e3f7a [2021-11-19 14:29:46,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:29:46,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:29:46,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:29:46,896 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:29:46,896 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:29:46,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-19 14:29:46,959 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/data/e6208dc6a/83b5074d558941959aa855d55ea2e60d/FLAGc0bf3b90b [2021-11-19 14:29:47,904 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:29:47,907 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-19 14:29:47,967 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/data/e6208dc6a/83b5074d558941959aa855d55ea2e60d/FLAGc0bf3b90b [2021-11-19 14:29:48,289 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/data/e6208dc6a/83b5074d558941959aa855d55ea2e60d [2021-11-19 14:29:48,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:29:48,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:29:48,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:29:48,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:29:48,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:29:48,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:29:48" (1/1) ... [2021-11-19 14:29:48,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b597e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:48, skipping insertion in model container [2021-11-19 14:29:48,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:29:48" (1/1) ... [2021-11-19 14:29:48,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:29:48,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:29:50,740 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 14:29:50,753 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 14:29:50,755 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 14:29:51,893 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[331922,331935] [2021-11-19 14:29:51,897 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332091,332104] [2021-11-19 14:29:51,897 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332258,332271] [2021-11-19 14:29:51,899 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332426,332439] [2021-11-19 14:29:51,937 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:29:52,012 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 14:29:52,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@547583ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:52, skipping insertion in model container [2021-11-19 14:29:52,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:29:52,014 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:29:52,016 INFO L158 Benchmark]: Toolchain (without parser) took 3721.06ms. Allocated memory was 107.0MB in the beginning and 136.3MB in the end (delta: 29.4MB). Free memory was 74.1MB in the beginning and 70.9MB in the end (delta: 3.2MB). Peak memory consumption was 50.5MB. Max. memory is 16.1GB. [2021-11-19 14:29:52,017 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 107.0MB. Free memory is still 81.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:29:52,019 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3717.90ms. Allocated memory was 107.0MB in the beginning and 136.3MB in the end (delta: 29.4MB). Free memory was 74.1MB in the beginning and 70.9MB in the end (delta: 3.2MB). Peak memory consumption was 50.5MB. Max. memory is 16.1GB. [2021-11-19 14:29:52,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 107.0MB. Free memory is still 81.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3717.90ms. Allocated memory was 107.0MB in the beginning and 136.3MB in the end (delta: 29.4MB). Free memory was 74.1MB in the beginning and 70.9MB in the end (delta: 3.2MB). Peak memory consumption was 50.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6363]: 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/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-smsc-epic100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/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 08a377ea5583d5b51d35b7880dbbb43c3783bcaabfa79c83938a2c0ac78e3f7a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:29:54,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:29:54,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:29:54,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:29:54,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:29:54,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:29:54,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:29:54,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:29:54,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:29:54,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:29:54,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:29:54,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:29:54,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:29:54,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:29:54,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:29:54,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:29:54,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:29:54,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:29:54,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:29:54,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:29:54,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:29:54,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:29:54,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:29:54,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:29:54,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:29:54,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:29:54,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:29:54,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:29:54,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:29:54,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:29:54,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:29:54,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:29:54,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:29:54,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:29:54,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:29:54,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:29:54,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:29:54,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:29:54,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:29:54,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:29:54,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:29:54,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:29:54,729 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:29:54,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:29:54,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:29:54,731 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:29:54,731 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:29:54,732 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:29:54,732 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:29:54,732 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:29:54,733 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:29:54,733 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:29:54,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:29:54,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:29:54,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:29:54,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:29:54,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:29:54,736 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:29:54,736 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:29:54,736 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:29:54,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:29:54,737 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:29:54,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:29:54,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:29:54,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:29:54,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:29:54,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:29:54,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:29:54,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:29:54,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:29:54,740 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:29:54,740 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:29:54,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:29:54,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:29:54,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:29:54,741 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08a377ea5583d5b51d35b7880dbbb43c3783bcaabfa79c83938a2c0ac78e3f7a [2021-11-19 14:29:55,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:29:55,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:29:55,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:29:55,200 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:29:55,201 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:29:55,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-19 14:29:55,285 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/data/bc738bb8d/db75857cc37b4f3f81cc8b1137b0abc3/FLAG2d712677d [2021-11-19 14:29:56,464 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:29:56,465 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-19 14:29:56,525 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/data/bc738bb8d/db75857cc37b4f3f81cc8b1137b0abc3/FLAG2d712677d [2021-11-19 14:29:56,758 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/data/bc738bb8d/db75857cc37b4f3f81cc8b1137b0abc3 [2021-11-19 14:29:56,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:29:56,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:29:56,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:29:56,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:29:56,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:29:56,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:29:56" (1/1) ... [2021-11-19 14:29:56,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@acaa152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:56, skipping insertion in model container [2021-11-19 14:29:56,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:29:56" (1/1) ... [2021-11-19 14:29:56,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:29:56,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:30:00,507 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[331922,331935] [2021-11-19 14:30:00,511 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332091,332104] [2021-11-19 14:30:00,512 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332258,332271] [2021-11-19 14:30:00,512 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332426,332439] [2021-11-19 14:30:00,554 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:30:00,640 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:30:00,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:30:01,183 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[331922,331935] [2021-11-19 14:30:01,183 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332091,332104] [2021-11-19 14:30:01,184 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332258,332271] [2021-11-19 14:30:01,184 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332426,332439] [2021-11-19 14:30:01,199 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:30:01,243 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:30:01,674 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[331922,331935] [2021-11-19 14:30:01,675 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332091,332104] [2021-11-19 14:30:01,676 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332258,332271] [2021-11-19 14:30:01,677 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_6a0f3982-0020-4af5-bfa3-d274dcc46c12/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332426,332439] [2021-11-19 14:30:01,692 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:30:01,988 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:30:01,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:01 WrapperNode [2021-11-19 14:30:01,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:30:01,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:30:01,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:30:01,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:30:02,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:01" (1/1) ... [2021-11-19 14:30:02,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:01" (1/1) ... [2021-11-19 14:30:02,376 INFO L137 Inliner]: procedures = 466, calls = 2015, calls flagged for inlining = 220, calls inlined = 194, statements flattened = 4396 [2021-11-19 14:30:02,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:30:02,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:30:02,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:30:02,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:30:02,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:01" (1/1) ... [2021-11-19 14:30:02,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:01" (1/1) ... [2021-11-19 14:30:02,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:01" (1/1) ... [2021-11-19 14:30:02,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:01" (1/1) ... [2021-11-19 14:30:02,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:01" (1/1) ... [2021-11-19 14:30:02,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:01" (1/1) ... [2021-11-19 14:30:02,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:01" (1/1) ... [2021-11-19 14:30:02,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:30:02,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:30:02,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:30:02,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:30:02,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:01" (1/1) ... [2021-11-19 14:30:02,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:30:02,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:30:02,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:30:02,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:30:02,739 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-19 14:30:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-19 14:30:02,740 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-19 14:30:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-19 14:30:02,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 14:30:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 14:30:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_begin [2021-11-19 14:30:02,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_begin [2021-11-19 14:30:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-19 14:30:02,741 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-19 14:30:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 14:30:02,741 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 14:30:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:30:02,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:30:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:30:02,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:30:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 14:30:02,742 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 14:30:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-19 14:30:02,743 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-19 14:30:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-19 14:30:02,743 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-19 14:30:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_73 [2021-11-19 14:30:02,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_73 [2021-11-19 14:30:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-19 14:30:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-19 14:30:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-19 14:30:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-19 14:30:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 14:30:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-19 14:30:02,745 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-19 14:30:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 14:30:02,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 14:30:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-19 14:30:02,746 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-19 14:30:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-19 14:30:02,746 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-19 14:30:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-19 14:30:02,747 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-19 14:30:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 14:30:02,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 14:30:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-19 14:30:02,748 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-19 14:30:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-19 14:30:02,749 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-19 14:30:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:30:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 14:30:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:30:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:30:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:30:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 14:30:02,751 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 14:30:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 14:30:02,751 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 14:30:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-19 14:30:02,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-19 14:30:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 14:30:02,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 14:30:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure epic_open [2021-11-19 14:30:02,753 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_open [2021-11-19 14:30:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-19 14:30:02,754 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-19 14:30:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 14:30:02,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 14:30:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 14:30:02,754 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 14:30:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-19 14:30:02,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-19 14:30:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 14:30:02,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 14:30:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 14:30:02,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 14:30:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-19 14:30:02,756 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-19 14:30:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-19 14:30:02,756 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-19 14:30:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure epic_restart [2021-11-19 14:30:02,757 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_restart [2021-11-19 14:30:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_epic_cleanup_14_2 [2021-11-19 14:30:02,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_epic_cleanup_14_2 [2021-11-19 14:30:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:30:02,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:30:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:30:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 14:30:02,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 14:30:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 14:30:02,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 14:30:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:30:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2021-11-19 14:30:02,760 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2021-11-19 14:30:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 14:30:02,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 14:30:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 14:30:02,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 14:30:02,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:30:02,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:30:02,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:30:02,761 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-19 14:30:02,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-19 14:30:02,762 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:30:02,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:30:02,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:30:02,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_epic_private [2021-11-19 14:30:02,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_epic_private [2021-11-19 14:30:02,767 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-19 14:30:02,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-19 14:30:02,767 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-19 14:30:02,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-19 14:30:02,768 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-19 14:30:02,769 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-19 14:30:02,769 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 14:30:02,770 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 14:30:02,770 INFO L130 BoogieDeclarations]: Found specification of procedure epic_remove_one [2021-11-19 14:30:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_remove_one [2021-11-19 14:30:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-19 14:30:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-19 14:30:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-19 14:30:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-19 14:30:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_napi_lock_of_epic_private [2021-11-19 14:30:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_napi_lock_of_epic_private [2021-11-19 14:30:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-19 14:30:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-19 14:30:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:30:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-19 14:30:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-19 14:30:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:30:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:30:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:30:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:30:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:30:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:30:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:30:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:30:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 14:30:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 14:30:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:30:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:30:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure epic_rx [2021-11-19 14:30:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_rx [2021-11-19 14:30:02,781 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_complete [2021-11-19 14:30:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_complete [2021-11-19 14:30:02,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-19 14:30:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-19 14:30:02,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_napi_lock_of_epic_private [2021-11-19 14:30:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_napi_lock_of_epic_private [2021-11-19 14:30:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-19 14:30:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-19 14:30:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:30:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:30:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 14:30:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 14:30:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-19 14:30:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-19 14:30:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-19 14:30:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-19 14:30:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:30:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_72 [2021-11-19 14:30:02,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_72 [2021-11-19 14:30:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure epic_resume [2021-11-19 14:30:02,784 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_resume [2021-11-19 14:30:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-19 14:30:02,784 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-19 14:30:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:30:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure epic_tx_timeout [2021-11-19 14:30:02,785 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_tx_timeout [2021-11-19 14:30:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-19 14:30:02,785 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-19 14:30:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:30:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:30:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:30:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:30:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:30:02,786 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 14:30:02,786 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 14:30:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 14:30:02,786 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 14:30:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 14:30:02,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 14:30:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-19 14:30:02,788 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-19 14:30:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 14:30:02,789 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 14:30:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 14:30:02,789 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 14:30:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure epic_close [2021-11-19 14:30:02,789 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_close [2021-11-19 14:30:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 14:30:02,789 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 14:30:02,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:30:02,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:30:02,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:30:02,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:30:02,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:30:02,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:30:02,790 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-19 14:30:02,791 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-19 14:30:02,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_epic_private [2021-11-19 14:30:02,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_epic_private [2021-11-19 14:30:02,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 14:30:02,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 14:30:02,791 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-19 14:30:02,791 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-19 14:30:02,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 14:30:02,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 14:30:02,792 INFO L130 BoogieDeclarations]: Found specification of procedure epic_pause [2021-11-19 14:30:02,792 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_pause [2021-11-19 14:30:03,677 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:30:03,681 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:30:13,279 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 14:30:45,007 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 14:30:45,195 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:30:45,219 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:30:45,219 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:30:45,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:30:45 BoogieIcfgContainer [2021-11-19 14:30:45,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:30:45,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:30:45,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:30:45,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:30:45,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:29:56" (1/3) ... [2021-11-19 14:30:45,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8057524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:30:45, skipping insertion in model container [2021-11-19 14:30:45,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:01" (2/3) ... [2021-11-19 14:30:45,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8057524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:30:45, skipping insertion in model container [2021-11-19 14:30:45,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:30:45" (3/3) ... [2021-11-19 14:30:45,235 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-19 14:30:45,241 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:30:45,241 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 14:30:45,319 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:30:45,327 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:30:45,327 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 14:30:45,396 INFO L276 IsEmpty]: Start isEmpty. Operand has 1658 states, 1128 states have (on average 1.2695035460992907) internal successors, (1432), 1162 states have internal predecessors, (1432), 441 states have call successors, (441), 87 states have call predecessors, (441), 86 states have return successors, (435), 430 states have call predecessors, (435), 435 states have call successors, (435) [2021-11-19 14:30:45,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-19 14:30:45,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:30:45,418 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:30:45,419 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:30:45,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:30:45,425 INFO L85 PathProgramCache]: Analyzing trace with hash 289463430, now seen corresponding path program 1 times [2021-11-19 14:30:45,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:30:45,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769609248] [2021-11-19 14:30:45,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:30:45,445 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:30:45,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:30:45,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:30:45,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:30:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:30:47,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 1358 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:30:47,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:30:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-11-19 14:30:47,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:30:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-11-19 14:30:48,290 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:30:48,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769609248] [2021-11-19 14:30:48,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769609248] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:30:48,291 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:30:48,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:30:48,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955913639] [2021-11-19 14:30:48,294 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:30:48,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:30:48,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:30:48,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:30:48,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:30:48,348 INFO L87 Difference]: Start difference. First operand has 1658 states, 1128 states have (on average 1.2695035460992907) internal successors, (1432), 1162 states have internal predecessors, (1432), 441 states have call successors, (441), 87 states have call predecessors, (441), 86 states have return successors, (435), 430 states have call predecessors, (435), 435 states have call successors, (435) Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-19 14:30:50,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:30:57,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:30:57,040 INFO L93 Difference]: Finished difference Result 6404 states and 9063 transitions. [2021-11-19 14:30:57,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:30:57,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 127 [2021-11-19 14:30:57,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:30:57,122 INFO L225 Difference]: With dead ends: 6404 [2021-11-19 14:30:57,123 INFO L226 Difference]: Without dead ends: 4752 [2021-11-19 14:30:57,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:30:57,151 INFO L933 BasicCegarLoop]: 3124 mSDtfsCounter, 5741 mSDsluCounter, 3552 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 817 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5741 SdHoareTripleChecker+Valid, 6676 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 817 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:30:57,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5741 Valid, 6676 Invalid, 1718 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [817 Valid, 900 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2021-11-19 14:30:57,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4752 states. [2021-11-19 14:30:57,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4752 to 4725. [2021-11-19 14:30:57,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4725 states, 3250 states have (on average 1.2633846153846153) internal successors, (4106), 3348 states have internal predecessors, (4106), 1221 states have call successors, (1221), 252 states have call predecessors, (1221), 251 states have return successors, (1217), 1202 states have call predecessors, (1217), 1217 states have call successors, (1217) [2021-11-19 14:30:57,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 6544 transitions. [2021-11-19 14:30:57,696 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 6544 transitions. Word has length 127 [2021-11-19 14:30:57,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:30:57,698 INFO L470 AbstractCegarLoop]: Abstraction has 4725 states and 6544 transitions. [2021-11-19 14:30:57,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-19 14:30:57,698 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 6544 transitions. [2021-11-19 14:30:57,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-19 14:30:57,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:30:57,716 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:30:57,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:30:57,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:30:57,944 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:30:57,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:30:57,945 INFO L85 PathProgramCache]: Analyzing trace with hash -693776646, now seen corresponding path program 1 times [2021-11-19 14:30:57,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:30:57,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751301030] [2021-11-19 14:30:57,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:30:57,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:30:57,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:30:57,951 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:30:57,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:30:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:30:59,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:30:59,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:30:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-11-19 14:30:59,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:31:00,095 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-11-19 14:31:00,095 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:31:00,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751301030] [2021-11-19 14:31:00,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751301030] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:31:00,096 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:31:00,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:31:00,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503838875] [2021-11-19 14:31:00,096 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:31:00,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:31:00,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:31:00,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:31:00,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:31:00,099 INFO L87 Difference]: Start difference. First operand 4725 states and 6544 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 14:31:02,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:31:02,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:31:02,992 INFO L93 Difference]: Finished difference Result 13337 states and 18488 transitions. [2021-11-19 14:31:02,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:31:02,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 136 [2021-11-19 14:31:02,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:31:03,085 INFO L225 Difference]: With dead ends: 13337 [2021-11-19 14:31:03,085 INFO L226 Difference]: Without dead ends: 8635 [2021-11-19 14:31:03,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:31:03,120 INFO L933 BasicCegarLoop]: 2655 mSDtfsCounter, 1886 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 4846 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:31:03,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1886 Valid, 4846 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 14:31:03,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8635 states. [2021-11-19 14:31:03,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8635 to 8603. [2021-11-19 14:31:03,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8603 states, 5883 states have (on average 1.263810980792113) internal successors, (7435), 6071 states have internal predecessors, (7435), 2243 states have call successors, (2243), 478 states have call predecessors, (2243), 474 states have return successors, (2242), 2197 states have call predecessors, (2242), 2239 states have call successors, (2242) [2021-11-19 14:31:03,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8603 states to 8603 states and 11920 transitions. [2021-11-19 14:31:03,792 INFO L78 Accepts]: Start accepts. Automaton has 8603 states and 11920 transitions. Word has length 136 [2021-11-19 14:31:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:31:03,793 INFO L470 AbstractCegarLoop]: Abstraction has 8603 states and 11920 transitions. [2021-11-19 14:31:03,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 14:31:03,794 INFO L276 IsEmpty]: Start isEmpty. Operand 8603 states and 11920 transitions. [2021-11-19 14:31:03,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-19 14:31:03,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:31:03,799 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:31:03,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:31:04,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:31:04,017 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:31:04,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:31:04,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2065689087, now seen corresponding path program 1 times [2021-11-19 14:31:04,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:31:04,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780783347] [2021-11-19 14:31:04,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:31:04,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:31:04,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:31:04,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:31:04,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:31:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:31:05,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:31:05,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:31:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-11-19 14:31:06,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:31:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-11-19 14:31:06,420 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:31:06,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780783347] [2021-11-19 14:31:06,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780783347] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:31:06,421 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:31:06,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:31:06,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139782218] [2021-11-19 14:31:06,422 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:31:06,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:31:06,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:31:06,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:31:06,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:31:06,424 INFO L87 Difference]: Start difference. First operand 8603 states and 11920 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-19 14:31:08,558 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:31:14,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:31:14,854 INFO L93 Difference]: Finished difference Result 32747 states and 45364 transitions. [2021-11-19 14:31:14,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:31:14,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 142 [2021-11-19 14:31:14,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:31:15,144 INFO L225 Difference]: With dead ends: 32747 [2021-11-19 14:31:15,144 INFO L226 Difference]: Without dead ends: 24167 [2021-11-19 14:31:15,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:31:15,198 INFO L933 BasicCegarLoop]: 3210 mSDtfsCounter, 5476 mSDsluCounter, 3453 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 814 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5476 SdHoareTripleChecker+Valid, 6663 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 814 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:31:15,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5476 Valid, 6663 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [814 Valid, 808 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2021-11-19 14:31:15,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24167 states. [2021-11-19 14:31:16,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24167 to 24091. [2021-11-19 14:31:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24091 states, 16505 states have (on average 1.2637988488336869) internal successors, (20859), 17035 states have internal predecessors, (20859), 6229 states have call successors, (6229), 1382 states have call predecessors, (6229), 1354 states have return successors, (6264), 6045 states have call predecessors, (6264), 6225 states have call successors, (6264) [2021-11-19 14:31:16,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24091 states to 24091 states and 33352 transitions. [2021-11-19 14:31:16,790 INFO L78 Accepts]: Start accepts. Automaton has 24091 states and 33352 transitions. Word has length 142 [2021-11-19 14:31:16,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:31:16,791 INFO L470 AbstractCegarLoop]: Abstraction has 24091 states and 33352 transitions. [2021-11-19 14:31:16,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-19 14:31:16,792 INFO L276 IsEmpty]: Start isEmpty. Operand 24091 states and 33352 transitions. [2021-11-19 14:31:16,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-19 14:31:16,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:31:16,800 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 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] [2021-11-19 14:31:16,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:31:17,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:31:17,028 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:31:17,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:31:17,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1703595742, now seen corresponding path program 1 times [2021-11-19 14:31:17,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:31:17,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403228652] [2021-11-19 14:31:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:31:17,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:31:17,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:31:17,032 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:31:17,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:31:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:31:18,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:31:18,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:31:19,584 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-11-19 14:31:19,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:31:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-11-19 14:31:20,557 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:31:20,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403228652] [2021-11-19 14:31:20,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403228652] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:31:20,557 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:31:20,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-19 14:31:20,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803191188] [2021-11-19 14:31:20,558 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:31:20,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:31:20,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:31:20,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:31:20,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:31:20,559 INFO L87 Difference]: Start difference. First operand 24091 states and 33352 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-19 14:31:21,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:31:21,819 INFO L93 Difference]: Finished difference Result 24097 states and 33357 transitions. [2021-11-19 14:31:21,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:31:21,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 183 [2021-11-19 14:31:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:31:21,939 INFO L225 Difference]: With dead ends: 24097 [2021-11-19 14:31:21,939 INFO L226 Difference]: Without dead ends: 24095 [2021-11-19 14:31:21,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:31:21,951 INFO L933 BasicCegarLoop]: 2274 mSDtfsCounter, 2189 mSDsluCounter, 6807 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2201 SdHoareTripleChecker+Valid, 9081 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:31:21,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2201 Valid, 9081 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:31:21,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24095 states. [2021-11-19 14:31:23,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24095 to 24095. [2021-11-19 14:31:23,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24095 states, 16508 states have (on average 1.2637509086503513) internal successors, (20862), 17038 states have internal predecessors, (20862), 6229 states have call successors, (6229), 1383 states have call predecessors, (6229), 1355 states have return successors, (6264), 6045 states have call predecessors, (6264), 6225 states have call successors, (6264) [2021-11-19 14:31:23,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24095 states to 24095 states and 33355 transitions. [2021-11-19 14:31:23,726 INFO L78 Accepts]: Start accepts. Automaton has 24095 states and 33355 transitions. Word has length 183 [2021-11-19 14:31:23,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:31:23,728 INFO L470 AbstractCegarLoop]: Abstraction has 24095 states and 33355 transitions. [2021-11-19 14:31:23,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-19 14:31:23,728 INFO L276 IsEmpty]: Start isEmpty. Operand 24095 states and 33355 transitions. [2021-11-19 14:31:23,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-19 14:31:23,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:31:23,737 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 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] [2021-11-19 14:31:23,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:31:23,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:31:23,964 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:31:23,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:31:23,965 INFO L85 PathProgramCache]: Analyzing trace with hash 709873131, now seen corresponding path program 1 times [2021-11-19 14:31:23,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:31:23,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192091386] [2021-11-19 14:31:23,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:31:23,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:31:23,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:31:23,968 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:31:23,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:31:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:31:25,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:31:25,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:31:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-11-19 14:31:26,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:31:27,057 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-11-19 14:31:27,058 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:31:27,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192091386] [2021-11-19 14:31:27,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192091386] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:31:27,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:31:27,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:31:27,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15938870] [2021-11-19 14:31:27,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:31:27,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:31:27,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:31:27,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:31:27,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:31:27,060 INFO L87 Difference]: Start difference. First operand 24095 states and 33355 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 14:31:28,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:31:28,121 INFO L93 Difference]: Finished difference Result 24101 states and 33360 transitions. [2021-11-19 14:31:28,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:31:28,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 188 [2021-11-19 14:31:28,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:31:28,235 INFO L225 Difference]: With dead ends: 24101 [2021-11-19 14:31:28,236 INFO L226 Difference]: Without dead ends: 24099 [2021-11-19 14:31:28,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:31:28,246 INFO L933 BasicCegarLoop]: 2277 mSDtfsCounter, 2213 mSDsluCounter, 4534 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2224 SdHoareTripleChecker+Valid, 6811 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:31:28,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2224 Valid, 6811 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:31:28,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24099 states. [2021-11-19 14:31:29,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24099 to 24099. [2021-11-19 14:31:29,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24099 states, 16511 states have (on average 1.2637029858881959) internal successors, (20865), 17041 states have internal predecessors, (20865), 6229 states have call successors, (6229), 1384 states have call predecessors, (6229), 1356 states have return successors, (6264), 6045 states have call predecessors, (6264), 6225 states have call successors, (6264) [2021-11-19 14:31:30,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24099 states to 24099 states and 33358 transitions. [2021-11-19 14:31:30,109 INFO L78 Accepts]: Start accepts. Automaton has 24099 states and 33358 transitions. Word has length 188 [2021-11-19 14:31:30,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:31:30,110 INFO L470 AbstractCegarLoop]: Abstraction has 24099 states and 33358 transitions. [2021-11-19 14:31:30,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 14:31:30,110 INFO L276 IsEmpty]: Start isEmpty. Operand 24099 states and 33358 transitions. [2021-11-19 14:31:30,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-19 14:31:30,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:31:30,119 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 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] [2021-11-19 14:31:30,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:31:30,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:31:30,344 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:31:30,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:31:30,345 INFO L85 PathProgramCache]: Analyzing trace with hash -36577662, now seen corresponding path program 1 times [2021-11-19 14:31:30,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:31:30,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873614073] [2021-11-19 14:31:30,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:31:30,347 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:31:30,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:31:30,349 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:31:30,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:31:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:31:31,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:31:31,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:31:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2021-11-19 14:31:32,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:31:33,472 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2021-11-19 14:31:33,472 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:31:33,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873614073] [2021-11-19 14:31:33,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873614073] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:31:33,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:31:33,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:31:33,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125458124] [2021-11-19 14:31:33,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:31:33,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:31:33,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:31:33,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:31:33,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:31:33,474 INFO L87 Difference]: Start difference. First operand 24099 states and 33358 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 14:31:34,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:31:34,854 INFO L93 Difference]: Finished difference Result 24105 states and 33363 transitions. [2021-11-19 14:31:34,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:31:34,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 193 [2021-11-19 14:31:34,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:31:35,023 INFO L225 Difference]: With dead ends: 24105 [2021-11-19 14:31:35,023 INFO L226 Difference]: Without dead ends: 24103 [2021-11-19 14:31:35,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:31:35,045 INFO L933 BasicCegarLoop]: 2277 mSDtfsCounter, 2213 mSDsluCounter, 4534 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 6811 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:31:35,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2223 Valid, 6811 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:31:35,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24103 states. [2021-11-19 14:31:37,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24103 to 24103. [2021-11-19 14:31:37,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24103 states, 16514 states have (on average 1.2636550805377256) internal successors, (20868), 17044 states have internal predecessors, (20868), 6229 states have call successors, (6229), 1385 states have call predecessors, (6229), 1357 states have return successors, (6264), 6045 states have call predecessors, (6264), 6225 states have call successors, (6264) [2021-11-19 14:31:37,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24103 states to 24103 states and 33361 transitions. [2021-11-19 14:31:37,189 INFO L78 Accepts]: Start accepts. Automaton has 24103 states and 33361 transitions. Word has length 193 [2021-11-19 14:31:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:31:37,190 INFO L470 AbstractCegarLoop]: Abstraction has 24103 states and 33361 transitions. [2021-11-19 14:31:37,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 14:31:37,190 INFO L276 IsEmpty]: Start isEmpty. Operand 24103 states and 33361 transitions. [2021-11-19 14:31:37,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-19 14:31:37,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:31:37,202 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 3, 3, 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] [2021-11-19 14:31:37,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:31:37,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:31:37,416 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:31:37,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:31:37,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1574984823, now seen corresponding path program 1 times [2021-11-19 14:31:37,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:31:37,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470604043] [2021-11-19 14:31:37,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:31:37,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:31:37,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:31:37,421 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:31:37,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:31:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:31:39,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:31:39,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:31:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-11-19 14:31:39,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:31:40,231 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2021-11-19 14:31:40,231 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:31:40,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470604043] [2021-11-19 14:31:40,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470604043] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:31:40,232 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:31:40,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:31:40,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172277446] [2021-11-19 14:31:40,233 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:31:40,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:31:40,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:31:40,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:31:40,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:31:40,235 INFO L87 Difference]: Start difference. First operand 24103 states and 33361 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-19 14:31:42,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:31:49,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:31:49,006 INFO L93 Difference]: Finished difference Result 56232 states and 77786 transitions. [2021-11-19 14:31:49,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:31:49,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 209 [2021-11-19 14:31:49,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:31:49,334 INFO L225 Difference]: With dead ends: 56232 [2021-11-19 14:31:49,334 INFO L226 Difference]: Without dead ends: 39988 [2021-11-19 14:31:49,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:31:49,466 INFO L933 BasicCegarLoop]: 4796 mSDtfsCounter, 4384 mSDsluCounter, 3561 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 408 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4384 SdHoareTripleChecker+Valid, 8357 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:31:49,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4384 Valid, 8357 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 893 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2021-11-19 14:31:49,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39988 states. [2021-11-19 14:31:52,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39988 to 39949. [2021-11-19 14:31:52,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39949 states, 27382 states have (on average 1.2625812577605726) internal successors, (34572), 28252 states have internal predecessors, (34572), 10303 states have call successors, (10303), 2307 states have call predecessors, (10303), 2261 states have return successors, (10364), 10009 states have call predecessors, (10364), 10299 states have call successors, (10364) [2021-11-19 14:31:52,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39949 states to 39949 states and 55239 transitions. [2021-11-19 14:31:52,335 INFO L78 Accepts]: Start accepts. Automaton has 39949 states and 55239 transitions. Word has length 209 [2021-11-19 14:31:52,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:31:52,341 INFO L470 AbstractCegarLoop]: Abstraction has 39949 states and 55239 transitions. [2021-11-19 14:31:52,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-19 14:31:52,343 INFO L276 IsEmpty]: Start isEmpty. Operand 39949 states and 55239 transitions. [2021-11-19 14:31:52,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-19 14:31:52,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:31:52,368 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:31:52,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:31:52,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:31:52,588 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:31:52,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:31:52,589 INFO L85 PathProgramCache]: Analyzing trace with hash -821883747, now seen corresponding path program 1 times [2021-11-19 14:31:52,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:31:52,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259391090] [2021-11-19 14:31:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:31:52,591 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:31:52,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:31:52,594 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:31:52,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:31:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:31:54,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 1552 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:31:54,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:31:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-11-19 14:31:55,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:31:55,445 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2021-11-19 14:31:55,446 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:31:55,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259391090] [2021-11-19 14:31:55,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259391090] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:31:55,446 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:31:55,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:31:55,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039648784] [2021-11-19 14:31:55,447 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:31:55,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:31:55,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:31:55,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:31:55,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:31:55,449 INFO L87 Difference]: Start difference. First operand 39949 states and 55239 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-19 14:31:57,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:32:04,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:32:04,119 INFO L93 Difference]: Finished difference Result 79993 states and 110570 transitions. [2021-11-19 14:32:04,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:32:04,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 210 [2021-11-19 14:32:04,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:32:04,377 INFO L225 Difference]: With dead ends: 79993 [2021-11-19 14:32:04,377 INFO L226 Difference]: Without dead ends: 47903 [2021-11-19 14:32:04,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:32:04,505 INFO L933 BasicCegarLoop]: 4837 mSDtfsCounter, 4380 mSDsluCounter, 4067 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4380 SdHoareTripleChecker+Valid, 8904 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:32:04,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4380 Valid, 8904 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 880 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-11-19 14:32:04,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47903 states. [2021-11-19 14:32:07,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47903 to 47833. [2021-11-19 14:32:07,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47833 states, 32783 states have (on average 1.2617515175548302) internal successors, (41364), 33823 states have internal predecessors, (41364), 12337 states have call successors, (12337), 2765 states have call predecessors, (12337), 2710 states have return successors, (12411), 11988 states have call predecessors, (12411), 12333 states have call successors, (12411) [2021-11-19 14:32:08,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47833 states to 47833 states and 66112 transitions. [2021-11-19 14:32:08,145 INFO L78 Accepts]: Start accepts. Automaton has 47833 states and 66112 transitions. Word has length 210 [2021-11-19 14:32:08,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:32:08,146 INFO L470 AbstractCegarLoop]: Abstraction has 47833 states and 66112 transitions. [2021-11-19 14:32:08,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-19 14:32:08,147 INFO L276 IsEmpty]: Start isEmpty. Operand 47833 states and 66112 transitions. [2021-11-19 14:32:08,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-19 14:32:08,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:32:08,161 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 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] [2021-11-19 14:32:08,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:32:08,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:32:08,376 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:32:08,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:32:08,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1524804619, now seen corresponding path program 1 times [2021-11-19 14:32:08,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:32:08,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807595025] [2021-11-19 14:32:08,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:32:08,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:32:08,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:32:08,380 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:32:08,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:32:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:32:09,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:32:09,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:32:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2021-11-19 14:32:11,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:32:12,130 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2021-11-19 14:32:12,130 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:32:12,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807595025] [2021-11-19 14:32:12,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807595025] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:32:12,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:32:12,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:32:12,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750096484] [2021-11-19 14:32:12,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:32:12,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:32:12,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:32:12,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:32:12,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:32:12,133 INFO L87 Difference]: Start difference. First operand 47833 states and 66112 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 14:32:14,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:32:14,554 INFO L93 Difference]: Finished difference Result 47839 states and 66117 transitions. [2021-11-19 14:32:14,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:32:14,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 198 [2021-11-19 14:32:14,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:32:14,753 INFO L225 Difference]: With dead ends: 47839 [2021-11-19 14:32:14,753 INFO L226 Difference]: Without dead ends: 47837 [2021-11-19 14:32:14,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:32:14,773 INFO L933 BasicCegarLoop]: 2277 mSDtfsCounter, 2213 mSDsluCounter, 4534 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2222 SdHoareTripleChecker+Valid, 6811 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:32:14,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2222 Valid, 6811 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:32:14,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47837 states. [2021-11-19 14:32:17,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47837 to 47837. [2021-11-19 14:32:17,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47837 states, 32786 states have (on average 1.2617275666442993) internal successors, (41367), 33826 states have internal predecessors, (41367), 12337 states have call successors, (12337), 2766 states have call predecessors, (12337), 2711 states have return successors, (12411), 11988 states have call predecessors, (12411), 12333 states have call successors, (12411) [2021-11-19 14:32:18,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47837 states to 47837 states and 66115 transitions. [2021-11-19 14:32:18,393 INFO L78 Accepts]: Start accepts. Automaton has 47837 states and 66115 transitions. Word has length 198 [2021-11-19 14:32:18,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:32:18,394 INFO L470 AbstractCegarLoop]: Abstraction has 47837 states and 66115 transitions. [2021-11-19 14:32:18,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 14:32:18,395 INFO L276 IsEmpty]: Start isEmpty. Operand 47837 states and 66115 transitions. [2021-11-19 14:32:18,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-19 14:32:18,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:32:18,408 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:32:18,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-19 14:32:18,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:32:18,609 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:32:18,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:32:18,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1664025570, now seen corresponding path program 1 times [2021-11-19 14:32:18,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:32:18,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208716627] [2021-11-19 14:32:18,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:32:18,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:32:18,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:32:18,613 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:32:18,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a0f3982-0020-4af5-bfa3-d274dcc46c12/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:32:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:32:20,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:32:20,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:32:21,333 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2021-11-19 14:32:21,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:32:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2021-11-19 14:32:22,142 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:32:22,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208716627] [2021-11-19 14:32:22,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208716627] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:32:22,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:32:22,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:32:22,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574395089] [2021-11-19 14:32:22,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:32:22,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:32:22,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:32:22,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:32:22,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:32:22,146 INFO L87 Difference]: Start difference. First operand 47837 states and 66115 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 14:32:24,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:32:24,933 INFO L93 Difference]: Finished difference Result 47843 states and 66120 transitions. [2021-11-19 14:32:24,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:32:24,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 203 [2021-11-19 14:32:24,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:32:25,144 INFO L225 Difference]: With dead ends: 47843 [2021-11-19 14:32:25,144 INFO L226 Difference]: Without dead ends: 47841 [2021-11-19 14:32:25,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:32:25,167 INFO L933 BasicCegarLoop]: 2277 mSDtfsCounter, 2213 mSDsluCounter, 4534 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2221 SdHoareTripleChecker+Valid, 6811 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:32:25,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2221 Valid, 6811 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:32:25,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47841 states.