./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-icplus-ipg.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF --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 7c9f1b92adb9acc769d32e01935187ba88bc4e22a7a5cb13176ef92b5b4818de --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:40:16,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:40:16,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:40:16,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:40:16,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:40:16,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:40:16,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:40:16,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:40:16,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:40:16,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:40:16,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:40:16,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:40:16,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:40:16,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:40:16,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:40:16,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:40:16,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:40:16,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:40:16,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:40:16,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:40:16,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:40:16,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:40:16,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:40:16,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:40:16,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:40:16,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:40:16,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:40:16,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:40:16,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:40:16,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:40:16,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:40:16,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:40:16,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:40:16,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:40:16,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:40:16,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:40:16,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:40:16,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:40:16,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:40:16,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:40:16,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:40:16,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:40:16,636 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:40:16,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:40:16,638 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:40:16,638 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:40:16,638 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:40:16,639 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:40:16,639 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:40:16,639 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:40:16,645 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:40:16,646 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:40:16,647 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:40:16,647 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:40:16,647 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:40:16,648 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:40:16,648 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:40:16,648 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:40:16,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:40:16,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:40:16,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:40:16,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:40:16,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:40:16,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:40:16,654 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:40:16,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:40:16,654 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:40:16,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:40:16,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:40:16,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:40:16,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:40:16,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:40:16,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:40:16,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:40:16,655 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:40:16,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:40:16,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:40:16,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:40:16,656 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:40:16,656 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c9f1b92adb9acc769d32e01935187ba88bc4e22a7a5cb13176ef92b5b4818de [2021-11-13 01:40:16,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:40:16,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:40:16,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:40:16,964 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:40:16,964 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:40:16,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-13 01:40:17,038 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/data/25e75d23d/cedff3269e27463a9b180991ad4e3a68/FLAG59c432957 [2021-11-13 01:40:17,952 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:40:17,953 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-13 01:40:17,993 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/data/25e75d23d/cedff3269e27463a9b180991ad4e3a68/FLAG59c432957 [2021-11-13 01:40:18,402 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/data/25e75d23d/cedff3269e27463a9b180991ad4e3a68 [2021-11-13 01:40:18,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:40:18,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:40:18,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:40:18,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:40:18,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:40:18,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:40:18" (1/1) ... [2021-11-13 01:40:18,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4235c684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:18, skipping insertion in model container [2021-11-13 01:40:18,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:40:18" (1/1) ... [2021-11-13 01:40:18,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:40:18,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:40:20,284 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:40:20,285 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:40:20,496 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:40:21,632 WARN L228 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315136,315149] [2021-11-13 01:40:21,636 WARN L228 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315305,315318] [2021-11-13 01:40:21,637 WARN L228 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315472,315485] [2021-11-13 01:40:21,637 WARN L228 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315640,315653] [2021-11-13 01:40:21,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:40:21,732 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) [2021-11-13 01:40:21,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@baa9d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:21, skipping insertion in model container [2021-11-13 01:40:21,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:40:21,733 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:40:21,736 INFO L158 Benchmark]: Toolchain (without parser) took 3328.02ms. Allocated memory was 94.4MB in the beginning and 167.8MB in the end (delta: 73.4MB). Free memory was 64.1MB in the beginning and 99.5MB in the end (delta: -35.3MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. [2021-11-13 01:40:21,737 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory was 64.5MB in the beginning and 64.4MB in the end (delta: 30.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:40:21,739 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3325.51ms. Allocated memory was 94.4MB in the beginning and 167.8MB in the end (delta: 73.4MB). Free memory was 64.0MB in the beginning and 99.5MB in the end (delta: -35.5MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. [2021-11-13 01:40:21,742 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory was 64.5MB in the beginning and 64.4MB in the end (delta: 30.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3325.51ms. Allocated memory was 94.4MB in the beginning and 167.8MB in the end (delta: 73.4MB). Free memory was 64.0MB in the beginning and 99.5MB in the end (delta: -35.5MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6042]: 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF --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 7c9f1b92adb9acc769d32e01935187ba88bc4e22a7a5cb13176ef92b5b4818de --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:40:24,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:40:24,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:40:24,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:40:24,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:40:24,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:40:24,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:40:24,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:40:24,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:40:24,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:40:24,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:40:24,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:40:24,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:40:24,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:40:24,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:40:24,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:40:24,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:40:24,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:40:24,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:40:24,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:40:24,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:40:24,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:40:24,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:40:24,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:40:24,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:40:24,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:40:24,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:40:24,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:40:24,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:40:24,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:40:24,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:40:24,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:40:24,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:40:24,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:40:24,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:40:24,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:40:24,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:40:24,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:40:24,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:40:24,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:40:24,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:40:24,223 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:40:24,275 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:40:24,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:40:24,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:40:24,277 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:40:24,277 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:40:24,278 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:40:24,278 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:40:24,278 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:40:24,279 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:40:24,279 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:40:24,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:40:24,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:40:24,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:40:24,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:40:24,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:40:24,283 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:40:24,283 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:40:24,284 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:40:24,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:40:24,284 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:40:24,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:40:24,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:40:24,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:40:24,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:40:24,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:40:24,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:40:24,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:40:24,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:40:24,286 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:40:24,287 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:40:24,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:40:24,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:40:24,287 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:40:24,288 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c9f1b92adb9acc769d32e01935187ba88bc4e22a7a5cb13176ef92b5b4818de [2021-11-13 01:40:24,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:40:24,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:40:24,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:40:24,703 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:40:24,703 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:40:24,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-13 01:40:24,789 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/data/c0c8f0cc0/be5b915d43a14f7cbdb90c9b9aba77cb/FLAGefc1bb8dd [2021-11-13 01:40:25,886 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:40:25,886 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-13 01:40:25,948 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/data/c0c8f0cc0/be5b915d43a14f7cbdb90c9b9aba77cb/FLAGefc1bb8dd [2021-11-13 01:40:26,217 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/data/c0c8f0cc0/be5b915d43a14f7cbdb90c9b9aba77cb [2021-11-13 01:40:26,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:40:26,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:40:26,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:40:26,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:40:26,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:40:26,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:40:26" (1/1) ... [2021-11-13 01:40:26,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a52de1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:26, skipping insertion in model container [2021-11-13 01:40:26,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:40:26" (1/1) ... [2021-11-13 01:40:26,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:40:26,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:40:29,213 WARN L228 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315136,315149] [2021-11-13 01:40:29,217 WARN L228 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315305,315318] [2021-11-13 01:40:29,218 WARN L228 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315472,315485] [2021-11-13 01:40:29,219 WARN L228 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315640,315653] [2021-11-13 01:40:29,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:40:29,359 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:40:29,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:40:29,780 WARN L228 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315136,315149] [2021-11-13 01:40:29,781 WARN L228 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315305,315318] [2021-11-13 01:40:29,781 WARN L228 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315472,315485] [2021-11-13 01:40:29,782 WARN L228 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315640,315653] [2021-11-13 01:40:29,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:40:29,842 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:40:30,253 WARN L228 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315136,315149] [2021-11-13 01:40:30,253 WARN L228 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315305,315318] [2021-11-13 01:40:30,254 WARN L228 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315472,315485] [2021-11-13 01:40:30,254 WARN L228 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_83fb2f54-b82a-4547-a24d-37bbd474fb2a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315640,315653] [2021-11-13 01:40:30,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:40:30,520 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:40:30,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:30 WrapperNode [2021-11-13 01:40:30,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:40:30,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:40:30,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:40:30,526 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:40:30,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:30" (1/1) ... [2021-11-13 01:40:30,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:30" (1/1) ... [2021-11-13 01:40:30,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:40:30,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:40:30,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:40:30,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:40:30,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:30" (1/1) ... [2021-11-13 01:40:30,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:30" (1/1) ... [2021-11-13 01:40:31,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:30" (1/1) ... [2021-11-13 01:40:31,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:30" (1/1) ... [2021-11-13 01:40:31,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:30" (1/1) ... [2021-11-13 01:40:31,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:30" (1/1) ... [2021-11-13 01:40:31,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:30" (1/1) ... [2021-11-13 01:40:31,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:40:31,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:40:31,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:40:31,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:40:31,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:30" (1/1) ... [2021-11-13 01:40:31,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:40:31,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:40:31,391 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:40:31,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:40:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-13 01:40:31,445 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-13 01:40:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-13 01:40:31,445 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-13 01:40:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 01:40:31,446 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 01:40:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-13 01:40:31,446 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-13 01:40:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 01:40:31,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 01:40:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-13 01:40:31,447 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-13 01:40:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure init_tfdlist [2021-11-13 01:40:31,447 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tfdlist [2021-11-13 01:40:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-13 01:40:31,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-13 01:40:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 01:40:31,448 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 01:40:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-13 01:40:31,448 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-13 01:40:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_set_multicast_list [2021-11-13 01:40:31,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_set_multicast_list [2021-11-13 01:40:31,449 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-13 01:40:31,449 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-13 01:40:31,449 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-13 01:40:31,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-13 01:40:31,450 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-13 01:40:31,450 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-13 01:40:31,450 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_rx_clear [2021-11-13 01:40:31,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_rx_clear [2021-11-13 01:40:31,450 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-13 01:40:31,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-13 01:40:31,451 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2021-11-13 01:40:31,451 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2021-11-13 01:40:31,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-13 01:40:31,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-13 01:40:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-13 01:40:31,452 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-13 01:40:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-13 01:40:31,452 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-13 01:40:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-13 01:40:31,453 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-13 01:40:31,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 01:40:31,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 01:40:31,453 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-13 01:40:31,453 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-13 01:40:31,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:40:31,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-13 01:40:31,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:40:31,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:40:31,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 01:40:31,454 INFO L130 BoogieDeclarations]: Found specification of procedure read_phy_bit [2021-11-13 01:40:31,455 INFO L138 BoogieDeclarations]: Found implementation of procedure read_phy_bit [2021-11-13 01:40:31,455 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_remove [2021-11-13 01:40:31,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_remove [2021-11-13 01:40:31,455 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 01:40:31,455 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 01:40:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 01:40:31,456 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 01:40:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_open [2021-11-13 01:40:31,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_open [2021-11-13 01:40:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-13 01:40:31,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-13 01:40:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 01:40:31,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 01:40:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 01:40:31,457 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 01:40:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-13 01:40:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-13 01:40:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-13 01:40:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-13 01:40:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-13 01:40:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-13 01:40:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-13 01:40:31,459 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-13 01:40:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-13 01:40:31,459 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-13 01:40:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 01:40:31,459 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 01:40:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_get_stats [2021-11-13 01:40:31,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_get_stats [2021-11-13 01:40:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-13 01:40:31,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-13 01:40:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rxrestore [2021-11-13 01:40:31,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rxrestore [2021-11-13 01:40:31,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:40:31,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-13 01:40:31,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-13 01:40:31,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-13 01:40:31,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-13 01:40:31,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 01:40:31,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 01:40:31,462 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 01:40:31,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 01:40:31,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:40:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 01:40:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 01:40:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-13 01:40:31,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-13 01:40:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 01:40:31,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 01:40:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 01:40:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioaddr [2021-11-13 01:40:31,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioaddr [2021-11-13 01:40:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-13 01:40:31,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-13 01:40:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-13 01:40:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-13 01:40:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-13 01:40:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-13 01:40:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-13 01:40:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-13 01:40:31,466 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_get_rxbuff [2021-11-13 01:40:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_get_rxbuff [2021-11-13 01:40:31,466 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_write_phy_ctl [2021-11-13 01:40:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_write_phy_ctl [2021-11-13 01:40:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-13 01:40:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-13 01:40:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-13 01:40:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-13 01:40:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 01:40:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_drive_phy_ctl_low_high [2021-11-13 01:40:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_drive_phy_ctl_low_high [2021-11-13 01:40:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-13 01:40:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-13 01:40:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:40:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:40:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_txfree [2021-11-13 01:40:31,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_txfree [2021-11-13 01:40:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:40:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:40:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 01:40:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 01:40:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 01:40:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 01:40:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 01:40:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 01:40:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_timeout [2021-11-13 01:40:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_timeout [2021-11-13 01:40:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-13 01:40:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-13 01:40:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-13 01:40:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-13 01:40:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 01:40:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 01:40:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-13 01:40:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-13 01:40:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-13 01:40:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-13 01:40:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_clear [2021-11-13 01:40:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_clear [2021-11-13 01:40:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2021-11-13 01:40:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2021-11-13 01:40:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:40:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-13 01:40:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-13 01:40:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:40:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_ipg_nic_private [2021-11-13 01:40:31,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_ipg_nic_private [2021-11-13 01:40:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_free_skb [2021-11-13 01:40:31,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_free_skb [2021-11-13 01:40:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:40:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure send_three_state [2021-11-13 01:40:31,475 INFO L138 BoogieDeclarations]: Found implementation of procedure send_three_state [2021-11-13 01:40:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 01:40:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 01:40:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 01:40:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:40:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-13 01:40:31,476 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-13 01:40:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 01:40:31,476 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 01:40:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-13 01:40:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-13 01:40:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-13 01:40:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-13 01:40:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-13 01:40:31,478 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-13 01:40:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_io_config [2021-11-13 01:40:31,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_io_config [2021-11-13 01:40:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure init_rfdlist [2021-11-13 01:40:31,478 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rfdlist [2021-11-13 01:40:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-13 01:40:31,479 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-13 01:40:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-13 01:40:31,479 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-13 01:40:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-13 01:40:31,479 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-13 01:40:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-13 01:40:31,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-13 01:40:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-13 01:40:31,480 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-13 01:40:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 01:40:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 01:40:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 01:40:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 01:40:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-13 01:40:31,481 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-13 01:40:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 01:40:31,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 01:40:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nway_reset [2021-11-13 01:40:31,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nway_reset [2021-11-13 01:40:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_stop [2021-11-13 01:40:31,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_stop [2021-11-13 01:40:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_config_autoneg [2021-11-13 01:40:31,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_config_autoneg [2021-11-13 01:40:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ipg_pci_driver_exit_13_2 [2021-11-13 01:40:31,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ipg_pci_driver_exit_13_2 [2021-11-13 01:40:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_ipg_nic_private [2021-11-13 01:40:31,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_ipg_nic_private [2021-11-13 01:40:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-13 01:40:31,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-13 01:40:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset [2021-11-13 01:40:31,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset [2021-11-13 01:40:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-13 01:40:31,484 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-13 01:40:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-13 01:40:31,484 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-13 01:40:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-13 01:40:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_check_error [2021-11-13 01:40:31,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_check_error [2021-11-13 01:40:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-13 01:40:31,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-13 01:40:38,667 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 01:41:14,310 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-13 01:41:14,386 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:41:14,386 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 01:41:14,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:41:14 BoogieIcfgContainer [2021-11-13 01:41:14,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:41:14,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:41:14,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:41:14,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:41:14,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:40:26" (1/3) ... [2021-11-13 01:41:14,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3b8a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:41:14, skipping insertion in model container [2021-11-13 01:41:14,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:30" (2/3) ... [2021-11-13 01:41:14,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3b8a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:41:14, skipping insertion in model container [2021-11-13 01:41:14,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:41:14" (3/3) ... [2021-11-13 01:41:14,399 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-13 01:41:14,404 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:41:14,404 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-13 01:41:14,462 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:41:14,469 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 [2021-11-13 01:41:14,469 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-13 01:41:14,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 1682 states, 1129 states have (on average 1.25066430469442) internal successors, (1412), 1164 states have internal predecessors, (1412), 457 states have call successors, (457), 96 states have call predecessors, (457), 95 states have return successors, (451), 448 states have call predecessors, (451), 451 states have call successors, (451) [2021-11-13 01:41:14,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-13 01:41:14,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:14,539 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:14,539 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)] === [2021-11-13 01:41:14,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:14,545 INFO L85 PathProgramCache]: Analyzing trace with hash -607085403, now seen corresponding path program 1 times [2021-11-13 01:41:14,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:14,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435682612] [2021-11-13 01:41:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:14,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:14,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:14,569 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:14,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:41:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:16,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:41:16,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:16,829 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-11-13 01:41:16,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-13 01:41:17,346 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:17,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435682612] [2021-11-13 01:41:17,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435682612] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:17,348 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:17,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:41:17,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978366744] [2021-11-13 01:41:17,351 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:17,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:41:17,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:17,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:41:17,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:41:17,405 INFO L87 Difference]: Start difference. First operand has 1682 states, 1129 states have (on average 1.25066430469442) internal successors, (1412), 1164 states have internal predecessors, (1412), 457 states have call successors, (457), 96 states have call predecessors, (457), 95 states have return successors, (451), 448 states have call predecessors, (451), 451 states have call successors, (451) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-13 01:41:19,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:41:27,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:27,983 INFO L93 Difference]: Finished difference Result 6489 states and 9162 transitions. [2021-11-13 01:41:27,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:41:27,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2021-11-13 01:41:27,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:28,078 INFO L225 Difference]: With dead ends: 6489 [2021-11-13 01:41:28,079 INFO L226 Difference]: Without dead ends: 4811 [2021-11-13 01:41:28,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:41:28,104 INFO L933 BasicCegarLoop]: 3158 mSDtfsCounter, 4405 mSDsluCounter, 5692 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9386.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4405 SdHoareTripleChecker+Valid, 8850 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 67.98ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9975.91ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:28,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4405 Valid, 8850 Invalid, 956 Unknown, 0 Unchecked, 67.98ms Time], IncrementalHoareTripleChecker [20 Valid, 935 Invalid, 1 Unknown, 0 Unchecked, 9975.91ms Time] [2021-11-13 01:41:28,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4811 states. [2021-11-13 01:41:28,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4811 to 4785. [2021-11-13 01:41:28,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4785 states, 3237 states have (on average 1.2459067037380291) internal successors, (4033), 3335 states have internal predecessors, (4033), 1267 states have call successors, (1267), 279 states have call predecessors, (1267), 278 states have return successors, (1263), 1254 states have call predecessors, (1263), 1263 states have call successors, (1263) [2021-11-13 01:41:28,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4785 states to 4785 states and 6563 transitions. [2021-11-13 01:41:28,529 INFO L78 Accepts]: Start accepts. Automaton has 4785 states and 6563 transitions. Word has length 116 [2021-11-13 01:41:28,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:28,530 INFO L470 AbstractCegarLoop]: Abstraction has 4785 states and 6563 transitions. [2021-11-13 01:41:28,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-13 01:41:28,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4785 states and 6563 transitions. [2021-11-13 01:41:28,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-13 01:41:28,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:28,541 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:28,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:28,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:41:28,761 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)] === [2021-11-13 01:41:28,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:28,762 INFO L85 PathProgramCache]: Analyzing trace with hash -371891785, now seen corresponding path program 1 times [2021-11-13 01:41:28,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:28,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030806616] [2021-11-13 01:41:28,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:28,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:28,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:28,768 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:28,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:41:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:30,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:41:30,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:30,633 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-11-13 01:41:30,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:31,128 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-13 01:41:31,129 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:31,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030806616] [2021-11-13 01:41:31,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030806616] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:31,130 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:31,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:41:31,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957783357] [2021-11-13 01:41:31,130 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:31,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:41:31,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:31,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:41:31,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:41:31,135 INFO L87 Difference]: Start difference. First operand 4785 states and 6563 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 01:41:33,285 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:41:40,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:40,163 INFO L93 Difference]: Finished difference Result 16914 states and 23078 transitions. [2021-11-13 01:41:40,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:41:40,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 120 [2021-11-13 01:41:40,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:40,282 INFO L225 Difference]: With dead ends: 16914 [2021-11-13 01:41:40,282 INFO L226 Difference]: Without dead ends: 12150 [2021-11-13 01:41:40,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:41:40,322 INFO L933 BasicCegarLoop]: 3082 mSDtfsCounter, 3520 mSDsluCounter, 5187 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7902.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3520 SdHoareTripleChecker+Valid, 8269 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.74ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8334.11ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:40,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3520 Valid, 8269 Invalid, 742 Unknown, 0 Unchecked, 35.74ms Time], IncrementalHoareTripleChecker [14 Valid, 727 Invalid, 1 Unknown, 0 Unchecked, 8334.11ms Time] [2021-11-13 01:41:40,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12150 states. [2021-11-13 01:41:41,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12150 to 12088. [2021-11-13 01:41:41,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12088 states, 8146 states have (on average 1.231033636140437) internal successors, (10028), 8385 states have internal predecessors, (10028), 3185 states have call successors, (3185), 773 states have call predecessors, (3185), 754 states have return successors, (3238), 3103 states have call predecessors, (3238), 3181 states have call successors, (3238) [2021-11-13 01:41:41,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12088 states to 12088 states and 16451 transitions. [2021-11-13 01:41:41,156 INFO L78 Accepts]: Start accepts. Automaton has 12088 states and 16451 transitions. Word has length 120 [2021-11-13 01:41:41,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:41,157 INFO L470 AbstractCegarLoop]: Abstraction has 12088 states and 16451 transitions. [2021-11-13 01:41:41,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 01:41:41,159 INFO L276 IsEmpty]: Start isEmpty. Operand 12088 states and 16451 transitions. [2021-11-13 01:41:41,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-13 01:41:41,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:41,175 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 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] [2021-11-13 01:41:41,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:41,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:41:41,402 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)] === [2021-11-13 01:41:41,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:41,402 INFO L85 PathProgramCache]: Analyzing trace with hash 926739397, now seen corresponding path program 1 times [2021-11-13 01:41:41,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:41,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853284071] [2021-11-13 01:41:41,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:41,404 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:41,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:41,409 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:41,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:41:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:42,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1235 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:41:42,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2021-11-13 01:41:43,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:44,211 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:41:44,211 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:44,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853284071] [2021-11-13 01:41:44,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853284071] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:44,212 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:44,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:41:44,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773930486] [2021-11-13 01:41:44,213 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:44,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:41:44,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:44,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:41:44,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:41:44,215 INFO L87 Difference]: Start difference. First operand 12088 states and 16451 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-13 01:41:46,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:41:47,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:47,622 INFO L93 Difference]: Finished difference Result 34650 states and 47117 transitions. [2021-11-13 01:41:47,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:41:47,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 167 [2021-11-13 01:41:47,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:47,810 INFO L225 Difference]: With dead ends: 34650 [2021-11-13 01:41:47,810 INFO L226 Difference]: Without dead ends: 22583 [2021-11-13 01:41:47,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:41:47,876 INFO L933 BasicCegarLoop]: 2698 mSDtfsCounter, 2038 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2462.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 4910 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.08ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2507.77ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:47,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2038 Valid, 4910 Invalid, 56 Unknown, 0 Unchecked, 16.08ms Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 1 Unknown, 0 Unchecked, 2507.77ms Time] [2021-11-13 01:41:47,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22583 states. [2021-11-13 01:41:49,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22583 to 22546. [2021-11-13 01:41:49,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22546 states, 15100 states have (on average 1.2293377483443708) internal successors, (18563), 15558 states have internal predecessors, (18563), 5966 states have call successors, (5966), 1517 states have call predecessors, (5966), 1477 states have return successors, (6076), 5791 states have call predecessors, (6076), 5962 states have call successors, (6076) [2021-11-13 01:41:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22546 states to 22546 states and 30605 transitions. [2021-11-13 01:41:49,216 INFO L78 Accepts]: Start accepts. Automaton has 22546 states and 30605 transitions. Word has length 167 [2021-11-13 01:41:49,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:49,216 INFO L470 AbstractCegarLoop]: Abstraction has 22546 states and 30605 transitions. [2021-11-13 01:41:49,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-13 01:41:49,217 INFO L276 IsEmpty]: Start isEmpty. Operand 22546 states and 30605 transitions. [2021-11-13 01:41:49,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-13 01:41:49,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:49,224 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 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] [2021-11-13 01:41:49,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:49,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:41:49,450 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 01:41:49,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:49,450 INFO L85 PathProgramCache]: Analyzing trace with hash 713945991, now seen corresponding path program 1 times [2021-11-13 01:41:49,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:49,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042119286] [2021-11-13 01:41:49,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:49,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:49,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:49,453 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:49,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:41:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:50,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:41:50,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:51,466 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2021-11-13 01:41:51,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-13 01:41:52,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:52,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042119286] [2021-11-13 01:41:52,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042119286] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:52,048 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:52,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:41:52,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532326333] [2021-11-13 01:41:52,048 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:52,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:41:52,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:52,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:41:52,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:41:52,050 INFO L87 Difference]: Start difference. First operand 22546 states and 30605 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 4 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-13 01:41:54,231 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 [] [2021-11-13 01:42:03,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:03,805 INFO L93 Difference]: Finished difference Result 54046 states and 73229 transitions. [2021-11-13 01:42:03,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:42:03,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 4 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 165 [2021-11-13 01:42:03,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:03,982 INFO L225 Difference]: With dead ends: 54046 [2021-11-13 01:42:03,982 INFO L226 Difference]: Without dead ends: 31521 [2021-11-13 01:42:04,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:42:04,087 INFO L933 BasicCegarLoop]: 3769 mSDtfsCounter, 4364 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 527 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9584.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4364 SdHoareTripleChecker+Valid, 6791 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.48ms SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10457.21ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:04,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4364 Valid, 6791 Invalid, 1483 Unknown, 0 Unchecked, 35.48ms Time], IncrementalHoareTripleChecker [527 Valid, 955 Invalid, 1 Unknown, 0 Unchecked, 10457.21ms Time] [2021-11-13 01:42:04,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31521 states. [2021-11-13 01:42:05,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31521 to 31451. [2021-11-13 01:42:05,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31451 states, 21303 states have (on average 1.2302023189222175) internal successors, (26207), 21903 states have internal predecessors, (26207), 8032 states have call successors, (8032), 2182 states have call predecessors, (8032), 2113 states have return successors, (8108), 7807 states have call predecessors, (8108), 8028 states have call successors, (8108) [2021-11-13 01:42:06,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31451 states to 31451 states and 42347 transitions. [2021-11-13 01:42:06,153 INFO L78 Accepts]: Start accepts. Automaton has 31451 states and 42347 transitions. Word has length 165 [2021-11-13 01:42:06,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:06,155 INFO L470 AbstractCegarLoop]: Abstraction has 31451 states and 42347 transitions. [2021-11-13 01:42:06,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 4 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-13 01:42:06,156 INFO L276 IsEmpty]: Start isEmpty. Operand 31451 states and 42347 transitions. [2021-11-13 01:42:06,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-13 01:42:06,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:06,160 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 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] [2021-11-13 01:42:06,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:06,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:42:06,373 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)] === [2021-11-13 01:42:06,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:06,374 INFO L85 PathProgramCache]: Analyzing trace with hash -256804206, now seen corresponding path program 1 times [2021-11-13 01:42:06,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:42:06,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996232756] [2021-11-13 01:42:06,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:06,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:42:06,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:42:06,378 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:42:06,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:42:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:07,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:42:07,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:09,918 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-13 01:42:09,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-13 01:42:11,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:42:11,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996232756] [2021-11-13 01:42:11,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996232756] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:11,263 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:11,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-13 01:42:11,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909735744] [2021-11-13 01:42:11,264 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:11,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:42:11,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:42:11,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:42:11,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:42:11,266 INFO L87 Difference]: Start difference. First operand 31451 states and 42347 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-13 01:42:12,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:12,937 INFO L93 Difference]: Finished difference Result 31457 states and 42352 transitions. [2021-11-13 01:42:12,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:42:12,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 172 [2021-11-13 01:42:12,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:13,114 INFO L225 Difference]: With dead ends: 31457 [2021-11-13 01:42:13,114 INFO L226 Difference]: Without dead ends: 31455 [2021-11-13 01:42:13,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:42:13,134 INFO L933 BasicCegarLoop]: 2277 mSDtfsCounter, 2195 mSDsluCounter, 6808 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 218.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2206 SdHoareTripleChecker+Valid, 9085 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.26ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 245.02ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:13,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2206 Valid, 9085 Invalid, 34 Unknown, 0 Unchecked, 26.26ms Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 245.02ms Time] [2021-11-13 01:42:13,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31455 states. [2021-11-13 01:42:15,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31455 to 31455. [2021-11-13 01:42:15,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31455 states, 21306 states have (on average 1.230169905191026) internal successors, (26210), 21906 states have internal predecessors, (26210), 8032 states have call successors, (8032), 2183 states have call predecessors, (8032), 2114 states have return successors, (8108), 7807 states have call predecessors, (8108), 8028 states have call successors, (8108) [2021-11-13 01:42:15,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31455 states to 31455 states and 42350 transitions. [2021-11-13 01:42:15,232 INFO L78 Accepts]: Start accepts. Automaton has 31455 states and 42350 transitions. Word has length 172 [2021-11-13 01:42:15,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:15,233 INFO L470 AbstractCegarLoop]: Abstraction has 31455 states and 42350 transitions. [2021-11-13 01:42:15,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-13 01:42:15,234 INFO L276 IsEmpty]: Start isEmpty. Operand 31455 states and 42350 transitions. [2021-11-13 01:42:15,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-13 01:42:15,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:15,251 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 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] [2021-11-13 01:42:15,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:15,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:42:15,456 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)] === [2021-11-13 01:42:15,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:15,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1462036946, now seen corresponding path program 1 times [2021-11-13 01:42:15,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:42:15,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169743173] [2021-11-13 01:42:15,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:15,459 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:42:15,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:42:15,461 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:42:15,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:42:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:17,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:42:17,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:19,434 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-13 01:42:19,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-13 01:42:20,907 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:42:20,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169743173] [2021-11-13 01:42:20,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169743173] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:42:20,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:42:20,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-13 01:42:20,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498966525] [2021-11-13 01:42:20,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:20,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:42:20,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:42:20,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:42:20,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:42:20,910 INFO L87 Difference]: Start difference. First operand 31455 states and 42350 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 01:42:22,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:22,282 INFO L93 Difference]: Finished difference Result 31461 states and 42355 transitions. [2021-11-13 01:42:22,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:42:22,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 177 [2021-11-13 01:42:22,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:22,463 INFO L225 Difference]: With dead ends: 31461 [2021-11-13 01:42:22,463 INFO L226 Difference]: Without dead ends: 31459 [2021-11-13 01:42:22,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:42:22,481 INFO L933 BasicCegarLoop]: 2280 mSDtfsCounter, 2219 mSDsluCounter, 4541 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2229 SdHoareTripleChecker+Valid, 6821 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.82ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.87ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:22,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2229 Valid, 6821 Invalid, 20 Unknown, 0 Unchecked, 14.82ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 112.87ms Time] [2021-11-13 01:42:22,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31459 states. [2021-11-13 01:42:24,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31459 to 31459. [2021-11-13 01:42:24,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31459 states, 21309 states have (on average 1.2301375005866066) internal successors, (26213), 21909 states have internal predecessors, (26213), 8032 states have call successors, (8032), 2184 states have call predecessors, (8032), 2115 states have return successors, (8108), 7807 states have call predecessors, (8108), 8028 states have call successors, (8108) [2021-11-13 01:42:24,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31459 states to 31459 states and 42353 transitions. [2021-11-13 01:42:24,444 INFO L78 Accepts]: Start accepts. Automaton has 31459 states and 42353 transitions. Word has length 177 [2021-11-13 01:42:24,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:24,445 INFO L470 AbstractCegarLoop]: Abstraction has 31459 states and 42353 transitions. [2021-11-13 01:42:24,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 01:42:24,446 INFO L276 IsEmpty]: Start isEmpty. Operand 31459 states and 42353 transitions. [2021-11-13 01:42:24,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-13 01:42:24,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:24,681 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 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] [2021-11-13 01:42:24,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:24,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:42:24,882 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)] === [2021-11-13 01:42:24,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:24,883 INFO L85 PathProgramCache]: Analyzing trace with hash 734753746, now seen corresponding path program 1 times [2021-11-13 01:42:24,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:42:24,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984542924] [2021-11-13 01:42:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:24,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:42:24,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:42:24,887 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:42:24,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:42:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:26,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:42:26,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2021-11-13 01:42:28,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2021-11-13 01:42:29,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:42:29,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984542924] [2021-11-13 01:42:29,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984542924] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:42:29,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:42:29,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-13 01:42:29,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600018540] [2021-11-13 01:42:29,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:29,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:42:29,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:42:29,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:42:29,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:42:29,970 INFO L87 Difference]: Start difference. First operand 31459 states and 42353 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-11-13 01:42:31,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:31,523 INFO L93 Difference]: Finished difference Result 31465 states and 42358 transitions. [2021-11-13 01:42:31,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:42:31,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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 182 [2021-11-13 01:42:31,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:31,664 INFO L225 Difference]: With dead ends: 31465 [2021-11-13 01:42:31,664 INFO L226 Difference]: Without dead ends: 31463 [2021-11-13 01:42:31,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:42:31,683 INFO L933 BasicCegarLoop]: 2280 mSDtfsCounter, 2219 mSDsluCounter, 4541 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 130.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2228 SdHoareTripleChecker+Valid, 6821 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.80ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.81ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:31,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2228 Valid, 6821 Invalid, 20 Unknown, 0 Unchecked, 22.80ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 135.81ms Time] [2021-11-13 01:42:31,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31463 states. [2021-11-13 01:42:33,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31463 to 31463. [2021-11-13 01:42:33,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31463 states, 21312 states have (on average 1.230105105105105) internal successors, (26216), 21912 states have internal predecessors, (26216), 8032 states have call successors, (8032), 2185 states have call predecessors, (8032), 2116 states have return successors, (8108), 7807 states have call predecessors, (8108), 8028 states have call successors, (8108) [2021-11-13 01:42:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31463 states to 31463 states and 42356 transitions. [2021-11-13 01:42:33,675 INFO L78 Accepts]: Start accepts. Automaton has 31463 states and 42356 transitions. Word has length 182 [2021-11-13 01:42:33,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:33,676 INFO L470 AbstractCegarLoop]: Abstraction has 31463 states and 42356 transitions. [2021-11-13 01:42:33,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-11-13 01:42:33,677 INFO L276 IsEmpty]: Start isEmpty. Operand 31463 states and 42356 transitions. [2021-11-13 01:42:33,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-13 01:42:33,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:33,683 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 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] [2021-11-13 01:42:33,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:33,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:42:33,897 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)] === [2021-11-13 01:42:33,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:33,898 INFO L85 PathProgramCache]: Analyzing trace with hash -914025362, now seen corresponding path program 1 times [2021-11-13 01:42:33,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:42:33,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459874791] [2021-11-13 01:42:33,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:33,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:42:33,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:42:33,902 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:42:33,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:42:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:35,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:42:35,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2021-11-13 01:42:37,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2021-11-13 01:42:39,022 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:42:39,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459874791] [2021-11-13 01:42:39,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459874791] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:42:39,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:42:39,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-13 01:42:39,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484612179] [2021-11-13 01:42:39,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:39,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:42:39,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:42:39,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:42:39,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:42:39,025 INFO L87 Difference]: Start difference. First operand 31463 states and 42356 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-11-13 01:42:41,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:41,048 INFO L93 Difference]: Finished difference Result 31469 states and 42361 transitions. [2021-11-13 01:42:41,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:42:41,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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 187 [2021-11-13 01:42:41,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:41,191 INFO L225 Difference]: With dead ends: 31469 [2021-11-13 01:42:41,191 INFO L226 Difference]: Without dead ends: 31467 [2021-11-13 01:42:41,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:42:41,205 INFO L933 BasicCegarLoop]: 2280 mSDtfsCounter, 2219 mSDsluCounter, 4541 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2227 SdHoareTripleChecker+Valid, 6821 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.39ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.23ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:41,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2227 Valid, 6821 Invalid, 20 Unknown, 0 Unchecked, 15.39ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 115.23ms Time] [2021-11-13 01:42:41,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31467 states. [2021-11-13 01:42:42,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31467 to 31467. [2021-11-13 01:42:42,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31467 states, 21315 states have (on average 1.2300727187426694) internal successors, (26219), 21915 states have internal predecessors, (26219), 8032 states have call successors, (8032), 2186 states have call predecessors, (8032), 2117 states have return successors, (8108), 7807 states have call predecessors, (8108), 8028 states have call successors, (8108) [2021-11-13 01:42:42,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31467 states to 31467 states and 42359 transitions. [2021-11-13 01:42:42,897 INFO L78 Accepts]: Start accepts. Automaton has 31467 states and 42359 transitions. Word has length 187 [2021-11-13 01:42:42,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:42,898 INFO L470 AbstractCegarLoop]: Abstraction has 31467 states and 42359 transitions. [2021-11-13 01:42:42,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-11-13 01:42:42,898 INFO L276 IsEmpty]: Start isEmpty. Operand 31467 states and 42359 transitions. [2021-11-13 01:42:42,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-13 01:42:42,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:42,905 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:42,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:43,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:42:43,121 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)] === [2021-11-13 01:42:43,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:43,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1198492845, now seen corresponding path program 1 times [2021-11-13 01:42:43,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:42:43,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504904121] [2021-11-13 01:42:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:43,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:42:43,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:42:43,124 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:42:43,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:42:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:44,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:42:44,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2021-11-13 01:42:45,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:45,591 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2021-11-13 01:42:45,591 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:42:45,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504904121] [2021-11-13 01:42:45,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504904121] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:45,592 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:45,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:42:45,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853356952] [2021-11-13 01:42:45,593 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:45,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:42:45,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:42:45,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:42:45,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:42:45,595 INFO L87 Difference]: Start difference. First operand 31467 states and 42359 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 4 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2021-11-13 01:42:47,773 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 [] [2021-11-13 01:42:56,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:56,740 INFO L93 Difference]: Finished difference Result 78090 states and 105074 transitions. [2021-11-13 01:42:56,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:42:56,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 4 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 204 [2021-11-13 01:42:56,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:56,971 INFO L225 Difference]: With dead ends: 78090 [2021-11-13 01:42:56,971 INFO L226 Difference]: Without dead ends: 46719 [2021-11-13 01:42:57,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:42:57,076 INFO L933 BasicCegarLoop]: 3265 mSDtfsCounter, 4392 mSDsluCounter, 4030 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8117.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4392 SdHoareTripleChecker+Valid, 7295 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.40ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8636.85ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:57,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4392 Valid, 7295 Invalid, 923 Unknown, 0 Unchecked, 22.40ms Time], IncrementalHoareTripleChecker [12 Valid, 910 Invalid, 1 Unknown, 0 Unchecked, 8636.85ms Time] [2021-11-13 01:42:57,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46719 states. [2021-11-13 01:42:59,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46719 to 46643. [2021-11-13 01:42:59,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46643 states, 31602 states have (on average 1.2254604138978547) internal successors, (38727), 32468 states have internal predecessors, (38727), 11890 states have call successors, (11890), 3257 states have call predecessors, (11890), 3148 states have return successors, (12006), 11580 states have call predecessors, (12006), 11886 states have call successors, (12006) [2021-11-13 01:43:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46643 states to 46643 states and 62623 transitions. [2021-11-13 01:43:00,147 INFO L78 Accepts]: Start accepts. Automaton has 46643 states and 62623 transitions. Word has length 204 [2021-11-13 01:43:00,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:00,147 INFO L470 AbstractCegarLoop]: Abstraction has 46643 states and 62623 transitions. [2021-11-13 01:43:00,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 4 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2021-11-13 01:43:00,148 INFO L276 IsEmpty]: Start isEmpty. Operand 46643 states and 62623 transitions. [2021-11-13 01:43:00,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-13 01:43:00,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:00,154 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:00,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:00,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:43:00,377 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)] === [2021-11-13 01:43:00,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:00,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2094006702, now seen corresponding path program 1 times [2021-11-13 01:43:00,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:00,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880853777] [2021-11-13 01:43:00,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:00,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:00,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:00,380 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:00,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 01:43:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:01,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:43:01,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2021-11-13 01:43:02,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:02,775 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2021-11-13 01:43:02,775 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:43:02,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880853777] [2021-11-13 01:43:02,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880853777] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:02,775 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:02,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:43:02,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177507537] [2021-11-13 01:43:02,776 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:02,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:43:02,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:43:02,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:43:02,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:43:02,778 INFO L87 Difference]: Start difference. First operand 46643 states and 62623 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 4 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2021-11-13 01:43:04,900 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 [] [2021-11-13 01:43:16,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:16,697 INFO L93 Difference]: Finished difference Result 123416 states and 165778 transitions. [2021-11-13 01:43:16,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:43:16,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 4 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 203 [2021-11-13 01:43:16,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:17,192 INFO L225 Difference]: With dead ends: 123416 [2021-11-13 01:43:17,192 INFO L226 Difference]: Without dead ends: 76869 [2021-11-13 01:43:17,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:43:17,306 INFO L933 BasicCegarLoop]: 4774 mSDtfsCounter, 4433 mSDsluCounter, 3542 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 434 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8938.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4433 SdHoareTripleChecker+Valid, 8316 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.26ms SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9599.88ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:17,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4433 Valid, 8316 Invalid, 1356 Unknown, 0 Unchecked, 25.26ms Time], IncrementalHoareTripleChecker [434 Valid, 921 Invalid, 1 Unknown, 0 Unchecked, 9599.88ms Time] [2021-11-13 01:43:17,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76869 states. [2021-11-13 01:43:21,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76869 to 76827. [2021-11-13 01:43:21,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76827 states, 52056 states have (on average 1.2253150453357922) internal successors, (63785), 53454 states have internal predecessors, (63785), 19570 states have call successors, (19570), 5363 states have call predecessors, (19570), 5198 states have return successors, (19766), 19114 states have call predecessors, (19766), 19566 states have call successors, (19766) [2021-11-13 01:43:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76827 states to 76827 states and 103121 transitions. [2021-11-13 01:43:22,014 INFO L78 Accepts]: Start accepts. Automaton has 76827 states and 103121 transitions. Word has length 203 [2021-11-13 01:43:22,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:22,015 INFO L470 AbstractCegarLoop]: Abstraction has 76827 states and 103121 transitions. [2021-11-13 01:43:22,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 4 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2021-11-13 01:43:22,015 INFO L276 IsEmpty]: Start isEmpty. Operand 76827 states and 103121 transitions. [2021-11-13 01:43:22,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-13 01:43:22,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:22,022 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 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] [2021-11-13 01:43:22,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:22,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:43:22,237 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 01:43:22,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:22,238 INFO L85 PathProgramCache]: Analyzing trace with hash -383742702, now seen corresponding path program 1 times [2021-11-13 01:43:22,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:22,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888383924] [2021-11-13 01:43:22,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:22,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:22,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:22,241 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:22,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fb2f54-b82a-4547-a24d-37bbd474fb2a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:43:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:23,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:43:23,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2021-11-13 01:43:25,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2021-11-13 01:43:27,177 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:43:27,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888383924] [2021-11-13 01:43:27,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888383924] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:43:27,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:43:27,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-13 01:43:27,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063397491] [2021-11-13 01:43:27,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:27,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:43:27,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:43:27,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:43:27,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:43:27,179 INFO L87 Difference]: Start difference. First operand 76827 states and 103121 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-11-13 01:43:31,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:31,556 INFO L93 Difference]: Finished difference Result 76833 states and 103126 transitions. [2021-11-13 01:43:31,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:43:31,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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 192 [2021-11-13 01:43:31,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:31,875 INFO L225 Difference]: With dead ends: 76833 [2021-11-13 01:43:31,876 INFO L226 Difference]: Without dead ends: 76831 [2021-11-13 01:43:31,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:43:31,903 INFO L933 BasicCegarLoop]: 2280 mSDtfsCounter, 2219 mSDsluCounter, 4541 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 104.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2226 SdHoareTripleChecker+Valid, 6821 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.15ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.16ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:31,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2226 Valid, 6821 Invalid, 20 Unknown, 0 Unchecked, 11.15ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 109.16ms Time] [2021-11-13 01:43:31,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76831 states. [2021-11-13 01:43:36,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76831 to 76831. [2021-11-13 01:43:36,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76831 states, 52059 states have (on average 1.2253020611229566) internal successors, (63788), 53457 states have internal predecessors, (63788), 19570 states have call successors, (19570), 5364 states have call predecessors, (19570), 5199 states have return successors, (19766), 19114 states have call predecessors, (19766), 19566 states have call successors, (19766)