./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:33:22,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:33:22,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:33:22,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:33:22,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:33:22,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:33:22,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:33:22,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:33:22,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:33:22,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:33:22,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:33:22,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:33:22,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:33:22,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:33:22,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:33:22,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:33:22,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:33:22,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:33:22,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:33:22,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:33:22,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:33:22,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:33:22,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:33:22,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:33:22,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:33:22,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:33:22,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:33:22,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:33:22,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:33:22,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:33:22,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:33:22,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:33:22,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:33:22,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:33:22,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:33:22,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:33:22,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:33:22,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:33:22,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:33:22,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:33:22,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:33:22,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 19:33:22,802 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:33:22,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:33:22,803 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:33:22,803 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:33:22,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:33:22,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:33:22,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:33:22,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:33:22,806 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:33:22,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:33:22,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:33:22,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:33:22,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:33:22,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:33:22,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:33:22,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:33:22,808 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:33:22,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:33:22,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:33:22,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:33:22,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:33:22,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:33:22,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:33:22,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:33:22,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:33:22,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:33:22,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:33:22,811 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:33:22,811 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:33:22,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:33:22,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 [2022-11-18 19:33:23,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:33:23,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:33:23,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:33:23,113 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:33:23,114 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:33:23,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-11-18 19:33:23,210 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/data/a5b9d65d3/43872330c3ac44e1a73ebd0f72dc7069/FLAG2065c8ffc [2022-11-18 19:33:24,384 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:33:24,385 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-11-18 19:33:24,452 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/data/a5b9d65d3/43872330c3ac44e1a73ebd0f72dc7069/FLAG2065c8ffc [2022-11-18 19:33:24,613 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/data/a5b9d65d3/43872330c3ac44e1a73ebd0f72dc7069 [2022-11-18 19:33:24,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:33:24,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:33:24,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:33:24,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:33:24,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:33:24,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:33:24" (1/1) ... [2022-11-18 19:33:24,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d416d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:24, skipping insertion in model container [2022-11-18 19:33:24,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:33:24" (1/1) ... [2022-11-18 19:33:24,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:33:24,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:33:29,319 WARN L234 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_5d94f692-d2dd-4432-9441-4e471f78c340/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2022-11-18 19:33:29,356 WARN L234 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_5d94f692-d2dd-4432-9441-4e471f78c340/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2022-11-18 19:33:29,357 WARN L234 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_5d94f692-d2dd-4432-9441-4e471f78c340/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2022-11-18 19:33:29,358 WARN L234 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_5d94f692-d2dd-4432-9441-4e471f78c340/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2022-11-18 19:33:29,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:33:29,452 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:33:30,063 WARN L234 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_5d94f692-d2dd-4432-9441-4e471f78c340/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2022-11-18 19:33:30,066 WARN L234 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_5d94f692-d2dd-4432-9441-4e471f78c340/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2022-11-18 19:33:30,067 WARN L234 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_5d94f692-d2dd-4432-9441-4e471f78c340/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2022-11-18 19:33:30,067 WARN L234 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_5d94f692-d2dd-4432-9441-4e471f78c340/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2022-11-18 19:33:30,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:33:30,316 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:33:30,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:30 WrapperNode [2022-11-18 19:33:30,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:33:30,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:33:30,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:33:30,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:33:30,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:30" (1/1) ... [2022-11-18 19:33:30,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:30" (1/1) ... [2022-11-18 19:33:30,855 INFO L138 Inliner]: procedures = 526, calls = 4210, calls flagged for inlining = 232, calls inlined = 215, statements flattened = 8850 [2022-11-18 19:33:30,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:33:30,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:33:30,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:33:30,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:33:30,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:30" (1/1) ... [2022-11-18 19:33:30,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:30" (1/1) ... [2022-11-18 19:33:30,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:30" (1/1) ... [2022-11-18 19:33:30,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:30" (1/1) ... [2022-11-18 19:33:31,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:30" (1/1) ... [2022-11-18 19:33:31,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:30" (1/1) ... [2022-11-18 19:33:31,309 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:30" (1/1) ... [2022-11-18 19:33:31,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:30" (1/1) ... [2022-11-18 19:33:31,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:33:31,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:33:31,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:33:31,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:33:31,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:30" (1/1) ... [2022-11-18 19:33:31,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:33:31,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:31,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:33:31,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:33:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure disable_ast [2022-11-18 19:33:31,519 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_ast [2022-11-18 19:33:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-18 19:33:31,519 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-18 19:33:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-18 19:33:31,519 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-18 19:33:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-18 19:33:31,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-18 19:33:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2022-11-18 19:33:31,520 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2022-11-18 19:33:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_put_cache [2022-11-18 19:33:31,520 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_put_cache [2022-11-18 19:33:31,521 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-11-18 19:33:31,521 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-11-18 19:33:31,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_de4x5_private [2022-11-18 19:33:31,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_de4x5_private [2022-11-18 19:33:31,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-18 19:33:31,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-18 19:33:31,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_de4x5_private [2022-11-18 19:33:31,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_de4x5_private [2022-11-18 19:33:31,522 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_mii [2022-11-18 19:33:31,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_mii [2022-11-18 19:33:31,522 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_switch_mac_port [2022-11-18 19:33:31,522 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_switch_mac_port [2022-11-18 19:33:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-18 19:33:31,523 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-18 19:33:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure srom_latch [2022-11-18 19:33:31,523 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_latch [2022-11-18 19:33:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2022-11-18 19:33:31,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2022-11-18 19:33:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-18 19:33:31,524 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-18 19:33:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure build_setup_frame [2022-11-18 19:33:31,524 INFO L138 BoogieDeclarations]: Found implementation of procedure build_setup_frame [2022-11-18 19:33:31,525 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2022-11-18 19:33:31,525 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2022-11-18 19:33:31,525 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2022-11-18 19:33:31,525 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2022-11-18 19:33:31,525 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-11-18 19:33:31,526 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-11-18 19:33:31,526 INFO L130 BoogieDeclarations]: Found specification of procedure DevicePresent [2022-11-18 19:33:31,526 INFO L138 BoogieDeclarations]: Found implementation of procedure DevicePresent [2022-11-18 19:33:31,526 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-18 19:33:31,526 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-18 19:33:31,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-18 19:33:31,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-18 19:33:31,527 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2022-11-18 19:33:31,527 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2022-11-18 19:33:31,527 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2022-11-18 19:33:31,528 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2022-11-18 19:33:31,528 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-18 19:33:31,529 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-18 19:33:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-18 19:33:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-18 19:33:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-11-18 19:33:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_sw_reset [2022-11-18 19:33:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_sw_reset [2022-11-18 19:33:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:33:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-18 19:33:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-18 19:33:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-18 19:33:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-18 19:33:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-18 19:33:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-18 19:33:31,533 INFO L130 BoogieDeclarations]: Found specification of procedure is_spd_100 [2022-11-18 19:33:31,533 INFO L138 BoogieDeclarations]: Found implementation of procedure is_spd_100 [2022-11-18 19:33:31,533 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-18 19:33:31,533 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-18 19:33:31,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-18 19:33:31,534 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-18 19:33:31,534 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-18 19:33:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_mii [2022-11-18 19:33:31,535 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_mii [2022-11-18 19:33:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_rx_buffs [2022-11-18 19:33:31,535 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_rx_buffs [2022-11-18 19:33:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-18 19:33:31,535 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-18 19:33:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-18 19:33:31,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-18 19:33:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-18 19:33:31,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-18 19:33:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-18 19:33:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-18 19:33:31,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-18 19:33:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:33:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-18 19:33:31,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-18 19:33:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-18 19:33:31,538 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-18 19:33:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-18 19:33:31,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-18 19:33:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-18 19:33:31,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-18 19:33:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure ping_media [2022-11-18 19:33:31,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ping_media [2022-11-18 19:33:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-18 19:33:31,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-18 19:33:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2022-11-18 19:33:31,541 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2022-11-18 19:33:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-18 19:33:31,541 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-18 19:33:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-18 19:33:31,542 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-18 19:33:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_tx [2022-11-18 19:33:31,542 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_tx [2022-11-18 19:33:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-18 19:33:31,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-18 19:33:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-18 19:33:31,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-18 19:33:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure srom_rd [2022-11-18 19:33:31,543 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_rd [2022-11-18 19:33:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:33:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure SetMulticastFilter [2022-11-18 19:33:31,548 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMulticastFilter [2022-11-18 19:33:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:33:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ioctl [2022-11-18 19:33:31,549 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ioctl [2022-11-18 19:33:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-18 19:33:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-18 19:33:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-18 19:33:31,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-18 19:33:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:33:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-18 19:33:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-18 19:33:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_srom [2022-11-18 19:33:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_srom [2022-11-18 19:33:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-18 19:33:31,560 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-18 19:33:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-18 19:33:31,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-18 19:33:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure mii_swap [2022-11-18 19:33:31,560 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_swap [2022-11-18 19:33:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_reset_phy [2022-11-18 19:33:31,561 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_reset_phy [2022-11-18 19:33:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_putb_cache [2022-11-18 19:33:31,561 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_putb_cache [2022-11-18 19:33:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-18 19:33:31,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-18 19:33:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2022-11-18 19:33:31,561 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2022-11-18 19:33:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-18 19:33:31,562 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-18 19:33:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_stats [2022-11-18 19:33:31,562 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_stats [2022-11-18 19:33:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-18 19:33:31,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-18 19:33:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-18 19:33:31,563 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-18 19:33:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init_connection [2022-11-18 19:33:31,563 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init_connection [2022-11-18 19:33:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wr [2022-11-18 19:33:31,563 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wr [2022-11-18 19:33:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:33:31,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:33:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_state [2022-11-18 19:33:31,564 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_state [2022-11-18 19:33:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-18 19:33:31,564 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-18 19:33:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2022-11-18 19:33:31,564 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2022-11-18 19:33:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-18 19:33:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-18 19:33:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-18 19:33:31,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-18 19:33:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure reset_init_sia [2022-11-18 19:33:31,565 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_init_sia [2022-11-18 19:33:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-18 19:33:31,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-18 19:33:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-18 19:33:31,566 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-18 19:33:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_alloc_rx_buff [2022-11-18 19:33:31,567 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_alloc_rx_buff [2022-11-18 19:33:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure test_for_100Mb [2022-11-18 19:33:31,567 INFO L138 BoogieDeclarations]: Found implementation of procedure test_for_100Mb [2022-11-18 19:33:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-18 19:33:31,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-18 19:33:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2022-11-18 19:33:31,567 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2022-11-18 19:33:31,568 INFO L130 BoogieDeclarations]: Found specification of procedure load_packet [2022-11-18 19:33:31,568 INFO L138 BoogieDeclarations]: Found implementation of procedure load_packet [2022-11-18 19:33:31,568 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2022-11-18 19:33:31,568 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2022-11-18 19:33:31,568 INFO L130 BoogieDeclarations]: Found specification of procedure is_100_up [2022-11-18 19:33:31,568 INFO L138 BoogieDeclarations]: Found implementation of procedure is_100_up [2022-11-18 19:33:31,568 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2022-11-18 19:33:31,569 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2022-11-18 19:33:31,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-18 19:33:31,569 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-18 19:33:31,569 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ta [2022-11-18 19:33:31,569 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ta [2022-11-18 19:33:31,569 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-18 19:33:31,569 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-18 19:33:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2022-11-18 19:33:31,570 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2022-11-18 19:33:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-11-18 19:33:31,570 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-11-18 19:33:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure test_mii_reg [2022-11-18 19:33:31,570 INFO L138 BoogieDeclarations]: Found implementation of procedure test_mii_reg [2022-11-18 19:33:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_cache_state [2022-11-18 19:33:31,571 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_cache_state [2022-11-18 19:33:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-18 19:33:31,571 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-18 19:33:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_pci_remove [2022-11-18 19:33:31,571 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_pci_remove [2022-11-18 19:33:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:33:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_media [2022-11-18 19:33:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_media [2022-11-18 19:33:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2022-11-18 19:33:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2022-11-18 19:33:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2022-11-18 19:33:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2022-11-18 19:33:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure mii_rd [2022-11-18 19:33:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_rd [2022-11-18 19:33:31,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:33:31,573 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2022-11-18 19:33:31,573 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2022-11-18 19:33:31,573 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2022-11-18 19:33:31,573 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2022-11-18 19:33:31,573 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2022-11-18 19:33:31,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2022-11-18 19:33:31,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 19:33:31,574 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-18 19:33:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-18 19:33:31,574 INFO L130 BoogieDeclarations]: Found specification of procedure is_10_up [2022-11-18 19:33:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure is_10_up [2022-11-18 19:33:31,574 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-18 19:33:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-18 19:33:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-18 19:33:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-18 19:33:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure is_anc_capable [2022-11-18 19:33:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure is_anc_capable [2022-11-18 19:33:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2022-11-18 19:33:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2022-11-18 19:33:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-18 19:33:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-18 19:33:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-18 19:33:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-18 19:33:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-18 19:33:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-18 19:33:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2022-11-18 19:33:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2022-11-18 19:33:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-18 19:33:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-18 19:33:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-18 19:33:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-18 19:33:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_queue_pkt [2022-11-18 19:33:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_queue_pkt [2022-11-18 19:33:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure test_media [2022-11-18 19:33:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure test_media [2022-11-18 19:33:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buffs [2022-11-18 19:33:31,585 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buffs [2022-11-18 19:33:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2022-11-18 19:33:31,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2022-11-18 19:33:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-18 19:33:31,585 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-18 19:33:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-18 19:33:31,586 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-18 19:33:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-18 19:33:31,586 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-18 19:33:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2022-11-18 19:33:31,586 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2022-11-18 19:33:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-18 19:33:31,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-18 19:33:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_73 [2022-11-18 19:33:31,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_73 [2022-11-18 19:33:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_infoleaf [2022-11-18 19:33:31,587 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_infoleaf [2022-11-18 19:33:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:33:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure srom_exec [2022-11-18 19:33:31,588 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_exec [2022-11-18 19:33:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-18 19:33:31,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-18 19:33:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure gep_wr [2022-11-18 19:33:31,588 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_wr [2022-11-18 19:33:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-18 19:33:31,588 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-18 19:33:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_srom [2022-11-18 19:33:31,589 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_srom [2022-11-18 19:33:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-18 19:33:31,589 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-18 19:33:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_cache [2022-11-18 19:33:31,589 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_cache [2022-11-18 19:33:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2022-11-18 19:33:31,589 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2022-11-18 19:33:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_mii [2022-11-18 19:33:31,590 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_mii [2022-11-18 19:33:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2022-11-18 19:33:31,590 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2022-11-18 19:33:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-18 19:33:31,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-18 19:33:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure gep_rd [2022-11-18 19:33:31,591 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_rd [2022-11-18 19:33:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure mii_address [2022-11-18 19:33:31,591 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_address [2022-11-18 19:33:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buff [2022-11-18 19:33:31,591 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buff [2022-11-18 19:33:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_setup_intr [2022-11-18 19:33:31,591 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_setup_intr [2022-11-18 19:33:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_save_skbs [2022-11-18 19:33:31,592 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_save_skbs [2022-11-18 19:33:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2022-11-18 19:33:31,592 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2022-11-18 19:33:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-18 19:33:31,592 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-18 19:33:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure srom_map_media [2022-11-18 19:33:31,593 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_map_media [2022-11-18 19:33:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_strncmp [2022-11-18 19:33:31,593 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_strncmp [2022-11-18 19:33:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-18 19:33:31,593 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-18 19:33:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_close [2022-11-18 19:33:31,593 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_close [2022-11-18 19:33:31,594 INFO L130 BoogieDeclarations]: Found specification of procedure yawn [2022-11-18 19:33:31,594 INFO L138 BoogieDeclarations]: Found implementation of procedure yawn [2022-11-18 19:33:31,594 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wdata [2022-11-18 19:33:31,594 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wdata [2022-11-18 19:33:31,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:33:31,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-18 19:33:31,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-18 19:33:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-18 19:33:33,045 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:33:33,049 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:33:33,698 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-18 19:33:54,075 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:33:54,101 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:33:54,101 INFO L300 CfgBuilder]: Removed 31 assume(true) statements. [2022-11-18 19:33:54,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:33:54 BoogieIcfgContainer [2022-11-18 19:33:54,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:33:54,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:33:54,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:33:54,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:33:54,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:33:24" (1/3) ... [2022-11-18 19:33:54,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82885f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:33:54, skipping insertion in model container [2022-11-18 19:33:54,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:30" (2/3) ... [2022-11-18 19:33:54,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82885f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:33:54, skipping insertion in model container [2022-11-18 19:33:54,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:33:54" (3/3) ... [2022-11-18 19:33:54,119 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-11-18 19:33:54,140 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:33:54,140 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-18 19:33:54,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:33:54,313 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@12829dce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:33:54,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 19:33:54,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 3985 states, 2875 states have (on average 1.3892173913043477) internal successors, (3994), 2952 states have internal predecessors, (3994), 972 states have call successors, (972), 151 states have call predecessors, (972), 150 states have return successors, (963), 949 states have call predecessors, (963), 963 states have call successors, (963) [2022-11-18 19:33:54,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-18 19:33:54,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:54,339 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-18 19:33:54,340 INFO L420 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)] === [2022-11-18 19:33:54,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:54,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1190865914, now seen corresponding path program 1 times [2022-11-18 19:33:54,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:54,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897643736] [2022-11-18 19:33:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:54,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:55,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:33:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:55,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:33:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:55,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:33:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:55,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:33:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:55,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:33:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:55,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:33:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:33:55,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:55,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897643736] [2022-11-18 19:33:55,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897643736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:55,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:55,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:33:55,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797864573] [2022-11-18 19:33:55,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:55,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:33:55,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:55,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:33:55,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:33:55,810 INFO L87 Difference]: Start difference. First operand has 3985 states, 2875 states have (on average 1.3892173913043477) internal successors, (3994), 2952 states have internal predecessors, (3994), 972 states have call successors, (972), 151 states have call predecessors, (972), 150 states have return successors, (963), 949 states have call predecessors, (963), 963 states have call successors, (963) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:33:56,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:56,564 INFO L93 Difference]: Finished difference Result 7897 states and 11963 transitions. [2022-11-18 19:33:56,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:33:56,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2022-11-18 19:33:56,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:56,630 INFO L225 Difference]: With dead ends: 7897 [2022-11-18 19:33:56,630 INFO L226 Difference]: Without dead ends: 3923 [2022-11-18 19:33:56,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:33:56,686 INFO L413 NwaCegarLoop]: 5800 mSDtfsCounter, 5778 mSDsluCounter, 11586 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5791 SdHoareTripleChecker+Valid, 17386 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:56,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5791 Valid, 17386 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:33:56,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3923 states. [2022-11-18 19:33:57,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3923 to 3923. [2022-11-18 19:33:57,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 2823 states have (on average 1.3786751682607155) internal successors, (3892), 2881 states have internal predecessors, (3892), 947 states have call successors, (947), 151 states have call predecessors, (947), 150 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-11-18 19:33:57,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 5783 transitions. [2022-11-18 19:33:57,064 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 5783 transitions. Word has length 48 [2022-11-18 19:33:57,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:57,065 INFO L495 AbstractCegarLoop]: Abstraction has 3923 states and 5783 transitions. [2022-11-18 19:33:57,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:33:57,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 5783 transitions. [2022-11-18 19:33:57,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 19:33:57,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:57,070 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-18 19:33:57,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:33:57,071 INFO L420 AbstractCegarLoop]: === Iteration 2 === 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)] === [2022-11-18 19:33:57,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:57,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1627617353, now seen corresponding path program 1 times [2022-11-18 19:33:57,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:57,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463321991] [2022-11-18 19:33:57,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:57,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:57,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:33:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:57,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:33:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:57,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:33:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:57,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:33:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:57,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:33:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:57,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:33:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:57,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:33:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:33:57,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:57,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463321991] [2022-11-18 19:33:57,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463321991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:57,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:57,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:33:57,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255709913] [2022-11-18 19:33:57,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:57,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:33:57,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:57,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:33:57,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:33:57,840 INFO L87 Difference]: Start difference. First operand 3923 states and 5783 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:33:58,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:58,248 INFO L93 Difference]: Finished difference Result 3929 states and 5788 transitions. [2022-11-18 19:33:58,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:33:58,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2022-11-18 19:33:58,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:58,294 INFO L225 Difference]: With dead ends: 3929 [2022-11-18 19:33:58,294 INFO L226 Difference]: Without dead ends: 3927 [2022-11-18 19:33:58,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:33:58,300 INFO L413 NwaCegarLoop]: 5780 mSDtfsCounter, 5751 mSDsluCounter, 11540 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5762 SdHoareTripleChecker+Valid, 17320 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:58,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5762 Valid, 17320 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:33:58,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2022-11-18 19:33:58,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 3927. [2022-11-18 19:33:58,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3927 states, 2826 states have (on average 1.378273177636235) internal successors, (3895), 2884 states have internal predecessors, (3895), 947 states have call successors, (947), 152 states have call predecessors, (947), 151 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-11-18 19:33:58,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 5786 transitions. [2022-11-18 19:33:58,690 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 5786 transitions. Word has length 53 [2022-11-18 19:33:58,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:58,691 INFO L495 AbstractCegarLoop]: Abstraction has 3927 states and 5786 transitions. [2022-11-18 19:33:58,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:33:58,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 5786 transitions. [2022-11-18 19:33:58,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 19:33:58,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:58,694 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-18 19:33:58,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:33:58,695 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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)] === [2022-11-18 19:33:58,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:58,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1425874342, now seen corresponding path program 1 times [2022-11-18 19:33:58,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:58,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36086280] [2022-11-18 19:33:58,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:58,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:59,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:33:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:59,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:33:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:59,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:33:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:59,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:33:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:59,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:33:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:59,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:33:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:59,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:33:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:59,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 19:33:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:59,354 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 19:33:59,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:59,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36086280] [2022-11-18 19:33:59,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36086280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:59,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:59,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:33:59,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801565372] [2022-11-18 19:33:59,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:59,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:33:59,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:59,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:33:59,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:33:59,363 INFO L87 Difference]: Start difference. First operand 3927 states and 5786 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:33:59,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:59,759 INFO L93 Difference]: Finished difference Result 3933 states and 5791 transitions. [2022-11-18 19:33:59,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:33:59,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-11-18 19:33:59,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:59,787 INFO L225 Difference]: With dead ends: 3933 [2022-11-18 19:33:59,788 INFO L226 Difference]: Without dead ends: 3931 [2022-11-18 19:33:59,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:33:59,792 INFO L413 NwaCegarLoop]: 5780 mSDtfsCounter, 5751 mSDsluCounter, 11540 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5761 SdHoareTripleChecker+Valid, 17320 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:59,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5761 Valid, 17320 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:33:59,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2022-11-18 19:34:00,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3931. [2022-11-18 19:34:00,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3931 states, 2829 states have (on average 1.377872039589961) internal successors, (3898), 2887 states have internal predecessors, (3898), 947 states have call successors, (947), 153 states have call predecessors, (947), 152 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-11-18 19:34:00,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3931 states to 3931 states and 5789 transitions. [2022-11-18 19:34:00,063 INFO L78 Accepts]: Start accepts. Automaton has 3931 states and 5789 transitions. Word has length 58 [2022-11-18 19:34:00,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:00,064 INFO L495 AbstractCegarLoop]: Abstraction has 3931 states and 5789 transitions. [2022-11-18 19:34:00,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:34:00,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3931 states and 5789 transitions. [2022-11-18 19:34:00,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-18 19:34:00,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:00,067 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2022-11-18 19:34:00,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:34:00,067 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 19:34:00,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:00,068 INFO L85 PathProgramCache]: Analyzing trace with hash 588407337, now seen corresponding path program 1 times [2022-11-18 19:34:00,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:00,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377668462] [2022-11-18 19:34:00,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:00,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:00,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:00,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:34:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:00,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:34:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:00,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:00,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:00,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:34:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:00,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:34:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:00,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 19:34:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:00,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 19:34:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:00,652 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 19:34:00,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:00,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377668462] [2022-11-18 19:34:00,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377668462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:00,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:00,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:34:00,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700749793] [2022-11-18 19:34:00,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:00,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:34:00,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:00,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:34:00,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:34:00,656 INFO L87 Difference]: Start difference. First operand 3931 states and 5789 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 19:34:00,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:00,989 INFO L93 Difference]: Finished difference Result 3937 states and 5794 transitions. [2022-11-18 19:34:00,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:34:00,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 63 [2022-11-18 19:34:00,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:01,019 INFO L225 Difference]: With dead ends: 3937 [2022-11-18 19:34:01,019 INFO L226 Difference]: Without dead ends: 3935 [2022-11-18 19:34:01,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:01,024 INFO L413 NwaCegarLoop]: 5780 mSDtfsCounter, 5751 mSDsluCounter, 11540 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5760 SdHoareTripleChecker+Valid, 17320 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:01,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5760 Valid, 17320 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:01,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2022-11-18 19:34:01,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 3935. [2022-11-18 19:34:01,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3935 states, 2832 states have (on average 1.3774717514124293) internal successors, (3901), 2890 states have internal predecessors, (3901), 947 states have call successors, (947), 154 states have call predecessors, (947), 153 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-11-18 19:34:01,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3935 states to 3935 states and 5792 transitions. [2022-11-18 19:34:01,316 INFO L78 Accepts]: Start accepts. Automaton has 3935 states and 5792 transitions. Word has length 63 [2022-11-18 19:34:01,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:01,318 INFO L495 AbstractCegarLoop]: Abstraction has 3935 states and 5792 transitions. [2022-11-18 19:34:01,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 19:34:01,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3935 states and 5792 transitions. [2022-11-18 19:34:01,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 19:34:01,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:01,328 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 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] [2022-11-18 19:34:01,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:34:01,329 INFO L420 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)] === [2022-11-18 19:34:01,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:01,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1018196154, now seen corresponding path program 1 times [2022-11-18 19:34:01,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:01,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881188664] [2022-11-18 19:34:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:01,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:01,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:01,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:34:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:01,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:34:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:01,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:01,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:01,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:34:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:01,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:34:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:01,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 19:34:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:01,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 19:34:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:01,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 19:34:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 19:34:01,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:01,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881188664] [2022-11-18 19:34:01,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881188664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:01,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:01,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:34:01,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143904300] [2022-11-18 19:34:01,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:01,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:34:01,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:01,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:34:01,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:34:01,975 INFO L87 Difference]: Start difference. First operand 3935 states and 5792 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 19:34:02,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:02,357 INFO L93 Difference]: Finished difference Result 3941 states and 5797 transitions. [2022-11-18 19:34:02,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:34:02,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 68 [2022-11-18 19:34:02,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:02,392 INFO L225 Difference]: With dead ends: 3941 [2022-11-18 19:34:02,393 INFO L226 Difference]: Without dead ends: 3939 [2022-11-18 19:34:02,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:02,398 INFO L413 NwaCegarLoop]: 5780 mSDtfsCounter, 5751 mSDsluCounter, 11540 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5759 SdHoareTripleChecker+Valid, 17320 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:02,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5759 Valid, 17320 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:02,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2022-11-18 19:34:02,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3939. [2022-11-18 19:34:02,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 2835 states have (on average 1.3770723104056437) internal successors, (3904), 2893 states have internal predecessors, (3904), 947 states have call successors, (947), 155 states have call predecessors, (947), 154 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-11-18 19:34:02,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5795 transitions. [2022-11-18 19:34:02,819 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5795 transitions. Word has length 68 [2022-11-18 19:34:02,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:02,820 INFO L495 AbstractCegarLoop]: Abstraction has 3939 states and 5795 transitions. [2022-11-18 19:34:02,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 19:34:02,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5795 transitions. [2022-11-18 19:34:02,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 19:34:02,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:02,822 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 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] [2022-11-18 19:34:02,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:34:02,823 INFO L420 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)] === [2022-11-18 19:34:02,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:02,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1126161399, now seen corresponding path program 1 times [2022-11-18 19:34:02,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:02,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167665497] [2022-11-18 19:34:02,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:02,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:03,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:03,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:34:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:03,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:34:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:03,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:03,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:03,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:34:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:03,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:34:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:03,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 19:34:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:03,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 19:34:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:03,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 19:34:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:03,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 19:34:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:03,469 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-18 19:34:03,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:03,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167665497] [2022-11-18 19:34:03,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167665497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:03,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:03,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:34:03,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861585240] [2022-11-18 19:34:03,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:03,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:34:03,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:03,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:34:03,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:34:03,473 INFO L87 Difference]: Start difference. First operand 3939 states and 5795 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:34:03,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:03,867 INFO L93 Difference]: Finished difference Result 3945 states and 5800 transitions. [2022-11-18 19:34:03,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:34:03,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 73 [2022-11-18 19:34:03,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:03,896 INFO L225 Difference]: With dead ends: 3945 [2022-11-18 19:34:03,896 INFO L226 Difference]: Without dead ends: 3943 [2022-11-18 19:34:03,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:03,902 INFO L413 NwaCegarLoop]: 5780 mSDtfsCounter, 5751 mSDsluCounter, 11540 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5758 SdHoareTripleChecker+Valid, 17320 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:03,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5758 Valid, 17320 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:03,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2022-11-18 19:34:04,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3943. [2022-11-18 19:34:04,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3943 states, 2838 states have (on average 1.3766737138830163) internal successors, (3907), 2896 states have internal predecessors, (3907), 947 states have call successors, (947), 156 states have call predecessors, (947), 155 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-11-18 19:34:04,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3943 states to 3943 states and 5798 transitions. [2022-11-18 19:34:04,243 INFO L78 Accepts]: Start accepts. Automaton has 3943 states and 5798 transitions. Word has length 73 [2022-11-18 19:34:04,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:04,243 INFO L495 AbstractCegarLoop]: Abstraction has 3943 states and 5798 transitions. [2022-11-18 19:34:04,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:34:04,244 INFO L276 IsEmpty]: Start isEmpty. Operand 3943 states and 5798 transitions. [2022-11-18 19:34:04,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-18 19:34:04,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:04,245 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 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] [2022-11-18 19:34:04,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:34:04,246 INFO L420 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)] === [2022-11-18 19:34:04,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:04,246 INFO L85 PathProgramCache]: Analyzing trace with hash 392833254, now seen corresponding path program 1 times [2022-11-18 19:34:04,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:04,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466470826] [2022-11-18 19:34:04,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:04,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:34:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:34:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:34:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:34:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 19:34:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 19:34:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 19:34:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 19:34:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 19:34:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,876 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-18 19:34:04,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:04,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466470826] [2022-11-18 19:34:04,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466470826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:04,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:04,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:34:04,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420872381] [2022-11-18 19:34:04,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:04,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:34:04,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:04,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:34:04,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:34:04,878 INFO L87 Difference]: Start difference. First operand 3943 states and 5798 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:05,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:05,275 INFO L93 Difference]: Finished difference Result 3949 states and 5803 transitions. [2022-11-18 19:34:05,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:34:05,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 78 [2022-11-18 19:34:05,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:05,300 INFO L225 Difference]: With dead ends: 3949 [2022-11-18 19:34:05,301 INFO L226 Difference]: Without dead ends: 3947 [2022-11-18 19:34:05,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:05,305 INFO L413 NwaCegarLoop]: 5780 mSDtfsCounter, 5751 mSDsluCounter, 11540 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5757 SdHoareTripleChecker+Valid, 17320 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:05,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5757 Valid, 17320 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:05,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3947 states. [2022-11-18 19:34:05,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3947 to 3947. [2022-11-18 19:34:05,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3947 states, 2841 states have (on average 1.3762759591693066) internal successors, (3910), 2899 states have internal predecessors, (3910), 947 states have call successors, (947), 157 states have call predecessors, (947), 156 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-11-18 19:34:05,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3947 states to 3947 states and 5801 transitions. [2022-11-18 19:34:05,615 INFO L78 Accepts]: Start accepts. Automaton has 3947 states and 5801 transitions. Word has length 78 [2022-11-18 19:34:05,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:05,616 INFO L495 AbstractCegarLoop]: Abstraction has 3947 states and 5801 transitions. [2022-11-18 19:34:05,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:05,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3947 states and 5801 transitions. [2022-11-18 19:34:05,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-18 19:34:05,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:05,618 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 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] [2022-11-18 19:34:05,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:34:05,619 INFO L420 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)] === [2022-11-18 19:34:05,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:05,619 INFO L85 PathProgramCache]: Analyzing trace with hash -837959285, now seen corresponding path program 1 times [2022-11-18 19:34:05,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:05,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789553782] [2022-11-18 19:34:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:05,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:34:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:34:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:34:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 19:34:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:34:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 19:34:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 19:34:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 19:34:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 19:34:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 19:34:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-18 19:34:06,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:06,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789553782] [2022-11-18 19:34:06,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789553782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:06,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:06,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:34:06,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796125854] [2022-11-18 19:34:06,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:06,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:34:06,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:06,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:34:06,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:34:06,275 INFO L87 Difference]: Start difference. First operand 3947 states and 5801 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 19:34:07,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:07,019 INFO L93 Difference]: Finished difference Result 4249 states and 6173 transitions. [2022-11-18 19:34:07,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:34:07,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 90 [2022-11-18 19:34:07,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:07,060 INFO L225 Difference]: With dead ends: 4249 [2022-11-18 19:34:07,060 INFO L226 Difference]: Without dead ends: 4247 [2022-11-18 19:34:07,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:07,065 INFO L413 NwaCegarLoop]: 5901 mSDtfsCounter, 5429 mSDsluCounter, 12460 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5434 SdHoareTripleChecker+Valid, 18361 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:07,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5434 Valid, 18361 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:07,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4247 states. [2022-11-18 19:34:07,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4247 to 4241. [2022-11-18 19:34:07,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4241 states, 3046 states have (on average 1.3667104399212082) internal successors, (4163), 3111 states have internal predecessors, (4163), 1003 states have call successors, (1003), 193 states have call predecessors, (1003), 189 states have return successors, (1001), 980 states have call predecessors, (1001), 1000 states have call successors, (1001) [2022-11-18 19:34:07,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4241 states to 4241 states and 6167 transitions. [2022-11-18 19:34:07,589 INFO L78 Accepts]: Start accepts. Automaton has 4241 states and 6167 transitions. Word has length 90 [2022-11-18 19:34:07,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:07,589 INFO L495 AbstractCegarLoop]: Abstraction has 4241 states and 6167 transitions. [2022-11-18 19:34:07,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 19:34:07,590 INFO L276 IsEmpty]: Start isEmpty. Operand 4241 states and 6167 transitions. [2022-11-18 19:34:07,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-18 19:34:07,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:07,592 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 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] [2022-11-18 19:34:07,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:34:07,592 INFO L420 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)] === [2022-11-18 19:34:07,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:07,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2126062556, now seen corresponding path program 1 times [2022-11-18 19:34:07,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:07,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339804218] [2022-11-18 19:34:07,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:07,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:34:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:34:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:34:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 19:34:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:34:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 19:34:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 19:34:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 19:34:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 19:34:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 19:34:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 19:34:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-18 19:34:08,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:08,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339804218] [2022-11-18 19:34:08,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339804218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:08,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:08,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:34:08,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595797481] [2022-11-18 19:34:08,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:08,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:34:08,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:08,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:34:08,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:34:08,383 INFO L87 Difference]: Start difference. First operand 4241 states and 6167 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-18 19:34:08,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:08,984 INFO L93 Difference]: Finished difference Result 4247 states and 6172 transitions. [2022-11-18 19:34:08,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:34:08,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95 [2022-11-18 19:34:08,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:09,014 INFO L225 Difference]: With dead ends: 4247 [2022-11-18 19:34:09,014 INFO L226 Difference]: Without dead ends: 4245 [2022-11-18 19:34:09,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:09,021 INFO L413 NwaCegarLoop]: 5780 mSDtfsCounter, 5744 mSDsluCounter, 11540 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5748 SdHoareTripleChecker+Valid, 17320 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:09,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5748 Valid, 17320 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:09,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4245 states. [2022-11-18 19:34:09,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4245 to 4245. [2022-11-18 19:34:09,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4245 states, 3049 states have (on average 1.3663496228271566) internal successors, (4166), 3114 states have internal predecessors, (4166), 1003 states have call successors, (1003), 194 states have call predecessors, (1003), 190 states have return successors, (1001), 980 states have call predecessors, (1001), 1000 states have call successors, (1001) [2022-11-18 19:34:09,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4245 states to 4245 states and 6170 transitions. [2022-11-18 19:34:09,573 INFO L78 Accepts]: Start accepts. Automaton has 4245 states and 6170 transitions. Word has length 95 [2022-11-18 19:34:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:09,574 INFO L495 AbstractCegarLoop]: Abstraction has 4245 states and 6170 transitions. [2022-11-18 19:34:09,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-18 19:34:09,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4245 states and 6170 transitions. [2022-11-18 19:34:09,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-18 19:34:09,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:09,577 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 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] [2022-11-18 19:34:09,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:34:09,578 INFO L420 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)] === [2022-11-18 19:34:09,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:09,578 INFO L85 PathProgramCache]: Analyzing trace with hash -25153591, now seen corresponding path program 1 times [2022-11-18 19:34:09,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:09,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898370757] [2022-11-18 19:34:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:09,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:34:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:34:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:34:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:34:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 19:34:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 19:34:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 19:34:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 19:34:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 19:34:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 19:34:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 19:34:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:34:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-18 19:34:10,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:10,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898370757] [2022-11-18 19:34:10,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898370757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:10,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:10,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:34:10,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221938644] [2022-11-18 19:34:10,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:10,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:34:10,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:10,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:34:10,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:34:10,384 INFO L87 Difference]: Start difference. First operand 4245 states and 6170 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 19:34:10,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:10,978 INFO L93 Difference]: Finished difference Result 4251 states and 6175 transitions. [2022-11-18 19:34:10,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:34:10,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 93 [2022-11-18 19:34:10,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:11,007 INFO L225 Difference]: With dead ends: 4251 [2022-11-18 19:34:11,007 INFO L226 Difference]: Without dead ends: 4249 [2022-11-18 19:34:11,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:11,012 INFO L413 NwaCegarLoop]: 5780 mSDtfsCounter, 5751 mSDsluCounter, 11540 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5754 SdHoareTripleChecker+Valid, 17320 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:11,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5754 Valid, 17320 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:11,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4249 states. [2022-11-18 19:34:11,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4249 to 4249. [2022-11-18 19:34:11,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4249 states, 3052 states have (on average 1.3659895150720838) internal successors, (4169), 3117 states have internal predecessors, (4169), 1003 states have call successors, (1003), 195 states have call predecessors, (1003), 191 states have return successors, (1001), 980 states have call predecessors, (1001), 1000 states have call successors, (1001) [2022-11-18 19:34:11,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4249 states to 4249 states and 6173 transitions. [2022-11-18 19:34:11,490 INFO L78 Accepts]: Start accepts. Automaton has 4249 states and 6173 transitions. Word has length 93 [2022-11-18 19:34:11,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:11,490 INFO L495 AbstractCegarLoop]: Abstraction has 4249 states and 6173 transitions. [2022-11-18 19:34:11,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 19:34:11,491 INFO L276 IsEmpty]: Start isEmpty. Operand 4249 states and 6173 transitions. [2022-11-18 19:34:11,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-18 19:34:11,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:11,493 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 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] [2022-11-18 19:34:11,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:34:11,494 INFO L420 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)] === [2022-11-18 19:34:11,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:11,495 INFO L85 PathProgramCache]: Analyzing trace with hash -416295898, now seen corresponding path program 1 times [2022-11-18 19:34:11,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:11,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549854257] [2022-11-18 19:34:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:11,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:34:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:34:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:34:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:34:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 19:34:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 19:34:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 19:34:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 19:34:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 19:34:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 19:34:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 19:34:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:34:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 19:34:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,164 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-18 19:34:12,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:12,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549854257] [2022-11-18 19:34:12,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549854257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:12,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:12,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:34:12,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792082404] [2022-11-18 19:34:12,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:12,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:34:12,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:12,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:34:12,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:34:12,168 INFO L87 Difference]: Start difference. First operand 4249 states and 6173 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 19:34:12,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:12,632 INFO L93 Difference]: Finished difference Result 4255 states and 6178 transitions. [2022-11-18 19:34:12,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:34:12,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 98 [2022-11-18 19:34:12,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:12,657 INFO L225 Difference]: With dead ends: 4255 [2022-11-18 19:34:12,657 INFO L226 Difference]: Without dead ends: 4253 [2022-11-18 19:34:12,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:12,662 INFO L413 NwaCegarLoop]: 5780 mSDtfsCounter, 5751 mSDsluCounter, 11540 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5753 SdHoareTripleChecker+Valid, 17320 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:12,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5753 Valid, 17320 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:12,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2022-11-18 19:34:13,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 4253. [2022-11-18 19:34:13,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4253 states, 3055 states have (on average 1.3656301145662848) internal successors, (4172), 3120 states have internal predecessors, (4172), 1003 states have call successors, (1003), 196 states have call predecessors, (1003), 192 states have return successors, (1001), 980 states have call predecessors, (1001), 1000 states have call successors, (1001) [2022-11-18 19:34:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4253 states to 4253 states and 6176 transitions. [2022-11-18 19:34:13,074 INFO L78 Accepts]: Start accepts. Automaton has 4253 states and 6176 transitions. Word has length 98 [2022-11-18 19:34:13,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:13,075 INFO L495 AbstractCegarLoop]: Abstraction has 4253 states and 6176 transitions. [2022-11-18 19:34:13,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 19:34:13,075 INFO L276 IsEmpty]: Start isEmpty. Operand 4253 states and 6176 transitions. [2022-11-18 19:34:13,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 19:34:13,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:13,080 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 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] [2022-11-18 19:34:13,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:34:13,080 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 19:34:13,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:13,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1921615447, now seen corresponding path program 1 times [2022-11-18 19:34:13,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:13,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788486828] [2022-11-18 19:34:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:13,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:34:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:34:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:34:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:34:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 19:34:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 19:34:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 19:34:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 19:34:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 19:34:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 19:34:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 19:34:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:34:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 19:34:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 19:34:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 19:34:13,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:13,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788486828] [2022-11-18 19:34:13,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788486828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:13,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:13,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:34:13,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903864300] [2022-11-18 19:34:13,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:13,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:34:13,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:13,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:34:13,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:34:13,762 INFO L87 Difference]: Start difference. First operand 4253 states and 6176 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-18 19:34:14,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:14,279 INFO L93 Difference]: Finished difference Result 4259 states and 6181 transitions. [2022-11-18 19:34:14,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:34:14,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 103 [2022-11-18 19:34:14,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:14,307 INFO L225 Difference]: With dead ends: 4259 [2022-11-18 19:34:14,307 INFO L226 Difference]: Without dead ends: 4255 [2022-11-18 19:34:14,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:14,312 INFO L413 NwaCegarLoop]: 5780 mSDtfsCounter, 5751 mSDsluCounter, 11540 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5752 SdHoareTripleChecker+Valid, 17320 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:14,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5752 Valid, 17320 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:14,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4255 states. [2022-11-18 19:34:14,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4255 to 4255. [2022-11-18 19:34:14,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4255 states, 3057 states have (on average 1.3650637880274779) internal successors, (4173), 3121 states have internal predecessors, (4173), 1003 states have call successors, (1003), 197 states have call predecessors, (1003), 192 states have return successors, (1001), 980 states have call predecessors, (1001), 1000 states have call successors, (1001) [2022-11-18 19:34:14,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4255 states to 4255 states and 6177 transitions. [2022-11-18 19:34:14,702 INFO L78 Accepts]: Start accepts. Automaton has 4255 states and 6177 transitions. Word has length 103 [2022-11-18 19:34:14,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:14,703 INFO L495 AbstractCegarLoop]: Abstraction has 4255 states and 6177 transitions. [2022-11-18 19:34:14,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-18 19:34:14,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4255 states and 6177 transitions. [2022-11-18 19:34:14,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-18 19:34:14,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:14,705 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 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] [2022-11-18 19:34:14,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:34:14,706 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 19:34:14,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:14,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1303913372, now seen corresponding path program 1 times [2022-11-18 19:34:14,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:14,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42017434] [2022-11-18 19:34:14,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:14,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:34:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:34:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:34:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 19:34:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:34:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 19:34:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 19:34:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 19:34:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 19:34:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 19:34:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 19:34:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 19:34:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 19:34:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 19:34:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 19:34:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-18 19:34:15,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:15,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42017434] [2022-11-18 19:34:15,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42017434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:15,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:15,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:34:15,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724454420] [2022-11-18 19:34:15,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:15,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:34:15,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:15,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:34:15,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:34:15,535 INFO L87 Difference]: Start difference. First operand 4255 states and 6177 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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) [2022-11-18 19:34:16,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:16,042 INFO L93 Difference]: Finished difference Result 4255 states and 6177 transitions. [2022-11-18 19:34:16,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:34:16,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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 115 [2022-11-18 19:34:16,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:16,067 INFO L225 Difference]: With dead ends: 4255 [2022-11-18 19:34:16,068 INFO L226 Difference]: Without dead ends: 4162 [2022-11-18 19:34:16,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:16,074 INFO L413 NwaCegarLoop]: 5778 mSDtfsCounter, 5740 mSDsluCounter, 11539 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5740 SdHoareTripleChecker+Valid, 17317 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:16,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5740 Valid, 17317 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:16,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4162 states. [2022-11-18 19:34:16,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4162 to 4162. [2022-11-18 19:34:16,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4162 states, 2999 states have (on average 1.3711237079026342) internal successors, (4112), 3061 states have internal predecessors, (4112), 981 states have call successors, (981), 183 states have call predecessors, (981), 180 states have return successors, (982), 961 states have call predecessors, (982), 981 states have call successors, (982) [2022-11-18 19:34:16,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4162 states to 4162 states and 6075 transitions. [2022-11-18 19:34:16,505 INFO L78 Accepts]: Start accepts. Automaton has 4162 states and 6075 transitions. Word has length 115 [2022-11-18 19:34:16,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:16,505 INFO L495 AbstractCegarLoop]: Abstraction has 4162 states and 6075 transitions. [2022-11-18 19:34:16,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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) [2022-11-18 19:34:16,506 INFO L276 IsEmpty]: Start isEmpty. Operand 4162 states and 6075 transitions. [2022-11-18 19:34:16,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-18 19:34:16,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:16,518 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:16,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:34:16,519 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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)] === [2022-11-18 19:34:16,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:16,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1768148028, now seen corresponding path program 1 times [2022-11-18 19:34:16,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:16,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200875298] [2022-11-18 19:34:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:16,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:16,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:16,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:34:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:16,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:34:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:34:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:34:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:34:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 19:34:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:34:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 19:34:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 19:34:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 19:34:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 19:34:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-18 19:34:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 19:34:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-18 19:34:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-18 19:34:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-18 19:34:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-18 19:34:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,219 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-18 19:34:17,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:17,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200875298] [2022-11-18 19:34:17,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200875298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:17,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:17,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:34:17,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947277809] [2022-11-18 19:34:17,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:17,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:34:17,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:17,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:34:17,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:34:17,223 INFO L87 Difference]: Start difference. First operand 4162 states and 6075 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-18 19:34:19,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:34:29,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:29,771 INFO L93 Difference]: Finished difference Result 8498 states and 12406 transitions. [2022-11-18 19:34:29,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:34:29,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 185 [2022-11-18 19:34:29,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:29,804 INFO L225 Difference]: With dead ends: 8498 [2022-11-18 19:34:29,804 INFO L226 Difference]: Without dead ends: 4353 [2022-11-18 19:34:29,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:34:29,833 INFO L413 NwaCegarLoop]: 2962 mSDtfsCounter, 7066 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 3167 mSolverCounterSat, 2868 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7315 SdHoareTripleChecker+Valid, 4260 SdHoareTripleChecker+Invalid, 6036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2868 IncrementalHoareTripleChecker+Valid, 3167 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:29,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7315 Valid, 4260 Invalid, 6036 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2868 Valid, 3167 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2022-11-18 19:34:29,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2022-11-18 19:34:30,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 4161. [2022-11-18 19:34:30,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4161 states, 2998 states have (on average 1.3705803869246165) internal successors, (4109), 3060 states have internal predecessors, (4109), 981 states have call successors, (981), 183 states have call predecessors, (981), 180 states have return successors, (982), 961 states have call predecessors, (982), 981 states have call successors, (982) [2022-11-18 19:34:30,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4161 states to 4161 states and 6072 transitions. [2022-11-18 19:34:30,300 INFO L78 Accepts]: Start accepts. Automaton has 4161 states and 6072 transitions. Word has length 185 [2022-11-18 19:34:30,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:30,300 INFO L495 AbstractCegarLoop]: Abstraction has 4161 states and 6072 transitions. [2022-11-18 19:34:30,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-18 19:34:30,300 INFO L276 IsEmpty]: Start isEmpty. Operand 4161 states and 6072 transitions. [2022-11-18 19:34:30,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-18 19:34:30,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:30,312 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:30,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:34:30,312 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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)] === [2022-11-18 19:34:30,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:30,313 INFO L85 PathProgramCache]: Analyzing trace with hash -745578129, now seen corresponding path program 1 times [2022-11-18 19:34:30,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:30,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444882928] [2022-11-18 19:34:30,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:30,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:34:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:34:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:34:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:34:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:34:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 19:34:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:34:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 19:34:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 19:34:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 19:34:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 19:34:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 19:34:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-18 19:34:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-18 19:34:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-18 19:34:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-18 19:34:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-18 19:34:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-18 19:34:31,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:31,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444882928] [2022-11-18 19:34:31,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444882928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:31,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:31,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:34:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838370730] [2022-11-18 19:34:31,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:31,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:34:31,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:31,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:34:31,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:34:31,868 INFO L87 Difference]: Start difference. First operand 4161 states and 6072 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-18 19:34:33,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:34:49,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:49,268 INFO L93 Difference]: Finished difference Result 4359 states and 6358 transitions. [2022-11-18 19:34:49,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:34:49,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 186 [2022-11-18 19:34:49,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:49,294 INFO L225 Difference]: With dead ends: 4359 [2022-11-18 19:34:49,294 INFO L226 Difference]: Without dead ends: 4357 [2022-11-18 19:34:49,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:34:49,299 INFO L413 NwaCegarLoop]: 3000 mSDtfsCounter, 7042 mSDsluCounter, 7078 mSDsCounter, 0 mSdLazyCounter, 9883 mSolverCounterSat, 2808 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7306 SdHoareTripleChecker+Valid, 10078 SdHoareTripleChecker+Invalid, 12692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2808 IncrementalHoareTripleChecker+Valid, 9883 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:49,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7306 Valid, 10078 Invalid, 12692 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2808 Valid, 9883 Invalid, 1 Unknown, 0 Unchecked, 16.5s Time] [2022-11-18 19:34:49,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states. [2022-11-18 19:34:49,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 4161. [2022-11-18 19:34:49,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4161 states, 2998 states have (on average 1.3702468312208138) internal successors, (4108), 3060 states have internal predecessors, (4108), 981 states have call successors, (981), 183 states have call predecessors, (981), 180 states have return successors, (982), 961 states have call predecessors, (982), 981 states have call successors, (982) [2022-11-18 19:34:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4161 states to 4161 states and 6071 transitions. [2022-11-18 19:34:49,754 INFO L78 Accepts]: Start accepts. Automaton has 4161 states and 6071 transitions. Word has length 186 [2022-11-18 19:34:49,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:49,755 INFO L495 AbstractCegarLoop]: Abstraction has 4161 states and 6071 transitions. [2022-11-18 19:34:49,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-18 19:34:49,756 INFO L276 IsEmpty]: Start isEmpty. Operand 4161 states and 6071 transitions. [2022-11-18 19:34:49,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-18 19:34:49,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:49,785 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:49,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:34:49,786 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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)] === [2022-11-18 19:34:49,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:49,787 INFO L85 PathProgramCache]: Analyzing trace with hash 592738836, now seen corresponding path program 1 times [2022-11-18 19:34:49,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:49,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353822819] [2022-11-18 19:34:49,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:49,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:34:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:34:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:34:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:34:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:34:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 19:34:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:34:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 19:34:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 19:34:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 19:34:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 19:34:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 19:34:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-18 19:34:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-18 19:34:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 19:34:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-18 19:34:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:34:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-18 19:34:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-11-18 19:34:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 19:34:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:34:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-11-18 19:34:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-11-18 19:34:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-11-18 19:34:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:34:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-18 19:34:50,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:50,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353822819] [2022-11-18 19:34:50,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353822819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:50,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:50,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:34:50,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013865667] [2022-11-18 19:34:50,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:50,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:34:50,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:50,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:34:50,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:50,888 INFO L87 Difference]: Start difference. First operand 4161 states and 6071 transitions. Second operand has 8 states, 7 states have (on average 15.571428571428571) internal successors, (109), 4 states have internal predecessors, (109), 3 states have call successors, (38), 6 states have call predecessors, (38), 2 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-18 19:34:52,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:34:54,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:34:56,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:34:58,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:35:27,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:27,628 INFO L93 Difference]: Finished difference Result 5289 states and 7856 transitions. [2022-11-18 19:35:27,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:35:27,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.571428571428571) internal successors, (109), 4 states have internal predecessors, (109), 3 states have call successors, (38), 6 states have call predecessors, (38), 2 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) Word has length 247 [2022-11-18 19:35:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:27,668 INFO L225 Difference]: With dead ends: 5289 [2022-11-18 19:35:27,669 INFO L226 Difference]: Without dead ends: 5287 [2022-11-18 19:35:27,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:35:27,675 INFO L413 NwaCegarLoop]: 2552 mSDtfsCounter, 9098 mSDsluCounter, 10129 mSDsCounter, 0 mSdLazyCounter, 18521 mSolverCounterSat, 5633 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9225 SdHoareTripleChecker+Valid, 12681 SdHoareTripleChecker+Invalid, 24158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5633 IncrementalHoareTripleChecker+Valid, 18521 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:27,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9225 Valid, 12681 Invalid, 24158 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5633 Valid, 18521 Invalid, 4 Unknown, 0 Unchecked, 35.3s Time] [2022-11-18 19:35:27,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5287 states. [2022-11-18 19:35:28,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5287 to 4166. [2022-11-18 19:35:28,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4166 states, 3001 states have (on average 1.3695434855048316) internal successors, (4110), 3064 states have internal predecessors, (4110), 981 states have call successors, (981), 183 states have call predecessors, (981), 182 states have return successors, (987), 962 states have call predecessors, (987), 981 states have call successors, (987) [2022-11-18 19:35:28,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4166 states to 4166 states and 6078 transitions. [2022-11-18 19:35:28,187 INFO L78 Accepts]: Start accepts. Automaton has 4166 states and 6078 transitions. Word has length 247 [2022-11-18 19:35:28,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:28,187 INFO L495 AbstractCegarLoop]: Abstraction has 4166 states and 6078 transitions. [2022-11-18 19:35:28,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.571428571428571) internal successors, (109), 4 states have internal predecessors, (109), 3 states have call successors, (38), 6 states have call predecessors, (38), 2 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-18 19:35:28,188 INFO L276 IsEmpty]: Start isEmpty. Operand 4166 states and 6078 transitions. [2022-11-18 19:35:28,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2022-11-18 19:35:28,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:28,235 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:28,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:35:28,235 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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)] === [2022-11-18 19:35:28,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:28,236 INFO L85 PathProgramCache]: Analyzing trace with hash -889441345, now seen corresponding path program 1 times [2022-11-18 19:35:28,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:28,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658358302] [2022-11-18 19:35:28,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:28,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:29,100 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:35:29,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118601040] [2022-11-18 19:35:29,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:29,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:29,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:29,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:29,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:35:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:33,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 9115 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:35:33,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 530 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-11-18 19:35:33,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:35:33,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:33,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658358302] [2022-11-18 19:35:33,771 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:35:33,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118601040] [2022-11-18 19:35:33,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118601040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:33,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:33,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:35:33,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294292083] [2022-11-18 19:35:33,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:33,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:35:33,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:33,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:35:33,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:35:33,775 INFO L87 Difference]: Start difference. First operand 4166 states and 6078 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-18 19:35:34,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:34,246 INFO L93 Difference]: Finished difference Result 8327 states and 12257 transitions. [2022-11-18 19:35:34,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:35:34,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 617 [2022-11-18 19:35:34,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:34,274 INFO L225 Difference]: With dead ends: 8327 [2022-11-18 19:35:34,274 INFO L226 Difference]: Without dead ends: 4178 [2022-11-18 19:35:34,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:35:34,305 INFO L413 NwaCegarLoop]: 5694 mSDtfsCounter, 12 mSDsluCounter, 5688 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 11382 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:34,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 11382 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:35:34,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4178 states. [2022-11-18 19:35:34,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4178 to 4169. [2022-11-18 19:35:34,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4169 states, 3004 states have (on average 1.3691744340878829) internal successors, (4113), 3067 states have internal predecessors, (4113), 981 states have call successors, (981), 183 states have call predecessors, (981), 182 states have return successors, (987), 962 states have call predecessors, (987), 981 states have call successors, (987) [2022-11-18 19:35:34,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4169 states to 4169 states and 6081 transitions. [2022-11-18 19:35:34,801 INFO L78 Accepts]: Start accepts. Automaton has 4169 states and 6081 transitions. Word has length 617 [2022-11-18 19:35:34,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:34,804 INFO L495 AbstractCegarLoop]: Abstraction has 4169 states and 6081 transitions. [2022-11-18 19:35:34,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-18 19:35:34,804 INFO L276 IsEmpty]: Start isEmpty. Operand 4169 states and 6081 transitions. [2022-11-18 19:35:34,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2022-11-18 19:35:34,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:34,853 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:34,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:35,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:35:35,067 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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)] === [2022-11-18 19:35:35,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:35,067 INFO L85 PathProgramCache]: Analyzing trace with hash 606247462, now seen corresponding path program 1 times [2022-11-18 19:35:35,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:35,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339422292] [2022-11-18 19:35:35,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:35,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:35,885 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:35:35,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601440466] [2022-11-18 19:35:35,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:35,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:35,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:35,887 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:35,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:35:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:40,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 9135 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:35:40,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:40,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2022-11-18 19:35:40,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:35:40,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:40,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339422292] [2022-11-18 19:35:40,244 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:35:40,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601440466] [2022-11-18 19:35:40,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601440466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:40,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:40,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:35:40,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468976756] [2022-11-18 19:35:40,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:40,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:35:40,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:40,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:35:40,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:35:40,247 INFO L87 Difference]: Start difference. First operand 4169 states and 6081 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 2 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-18 19:35:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:40,892 INFO L93 Difference]: Finished difference Result 8501 states and 12503 transitions. [2022-11-18 19:35:40,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:35:40,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 2 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) Word has length 621 [2022-11-18 19:35:40,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:40,919 INFO L225 Difference]: With dead ends: 8501 [2022-11-18 19:35:40,920 INFO L226 Difference]: Without dead ends: 4349 [2022-11-18 19:35:40,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:35:40,942 INFO L413 NwaCegarLoop]: 5756 mSDtfsCounter, 181 mSDsluCounter, 5711 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 11467 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:40,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 11467 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:35:40,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4349 states. [2022-11-18 19:35:41,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4349 to 4170. [2022-11-18 19:35:41,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4170 states, 3005 states have (on average 1.3690515806988353) internal successors, (4114), 3068 states have internal predecessors, (4114), 981 states have call successors, (981), 183 states have call predecessors, (981), 182 states have return successors, (987), 962 states have call predecessors, (987), 981 states have call successors, (987) [2022-11-18 19:35:41,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4170 states to 4170 states and 6082 transitions. [2022-11-18 19:35:41,485 INFO L78 Accepts]: Start accepts. Automaton has 4170 states and 6082 transitions. Word has length 621 [2022-11-18 19:35:41,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:41,486 INFO L495 AbstractCegarLoop]: Abstraction has 4170 states and 6082 transitions. [2022-11-18 19:35:41,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 2 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-18 19:35:41,487 INFO L276 IsEmpty]: Start isEmpty. Operand 4170 states and 6082 transitions. [2022-11-18 19:35:41,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2022-11-18 19:35:41,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:41,528 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 8, 8, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:41,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 19:35:41,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:35:41,743 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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)] === [2022-11-18 19:35:41,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:41,743 INFO L85 PathProgramCache]: Analyzing trace with hash -174020925, now seen corresponding path program 1 times [2022-11-18 19:35:41,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:41,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088735059] [2022-11-18 19:35:41,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:41,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:42,682 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:35:42,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379055847] [2022-11-18 19:35:42,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:42,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:42,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:42,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:42,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:35:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:47,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 9170 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:35:47,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2022-11-18 19:35:47,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:35:47,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:47,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088735059] [2022-11-18 19:35:47,284 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:35:47,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379055847] [2022-11-18 19:35:47,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379055847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:47,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:47,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:35:47,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620597752] [2022-11-18 19:35:47,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:47,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:35:47,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:47,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:35:47,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:35:47,289 INFO L87 Difference]: Start difference. First operand 4170 states and 6082 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 2 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2022-11-18 19:35:47,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:47,817 INFO L93 Difference]: Finished difference Result 8332 states and 12259 transitions. [2022-11-18 19:35:47,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:35:47,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 2 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) Word has length 633 [2022-11-18 19:35:47,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:47,844 INFO L225 Difference]: With dead ends: 8332 [2022-11-18 19:35:47,844 INFO L226 Difference]: Without dead ends: 4179 [2022-11-18 19:35:47,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:35:47,868 INFO L413 NwaCegarLoop]: 5697 mSDtfsCounter, 7 mSDsluCounter, 5688 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 11385 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:47,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 11385 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:35:47,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4179 states. [2022-11-18 19:35:48,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4179 to 4176. [2022-11-18 19:35:48,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4176 states, 3011 states have (on average 1.3683161740285619) internal successors, (4120), 3074 states have internal predecessors, (4120), 981 states have call successors, (981), 183 states have call predecessors, (981), 182 states have return successors, (987), 962 states have call predecessors, (987), 981 states have call successors, (987) [2022-11-18 19:35:48,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 6088 transitions. [2022-11-18 19:35:48,483 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 6088 transitions. Word has length 633 [2022-11-18 19:35:48,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:48,484 INFO L495 AbstractCegarLoop]: Abstraction has 4176 states and 6088 transitions. [2022-11-18 19:35:48,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 2 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2022-11-18 19:35:48,485 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 6088 transitions. [2022-11-18 19:35:48,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2022-11-18 19:35:48,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:48,517 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 8, 8, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:48,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:48,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:48,729 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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)] === [2022-11-18 19:35:48,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:48,729 INFO L85 PathProgramCache]: Analyzing trace with hash 2099614277, now seen corresponding path program 1 times [2022-11-18 19:35:48,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:48,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790134319] [2022-11-18 19:35:48,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:48,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:49,617 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:35:49,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995648375] [2022-11-18 19:35:49,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:49,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:49,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,623 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:35:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:54,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 9167 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:35:54,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2022-11-18 19:35:54,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:35:54,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:54,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790134319] [2022-11-18 19:35:54,313 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:35:54,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995648375] [2022-11-18 19:35:54,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995648375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:54,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:54,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:35:54,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833931014] [2022-11-18 19:35:54,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:54,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:35:54,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:54,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:35:54,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:35:54,317 INFO L87 Difference]: Start difference. First operand 4176 states and 6088 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 3 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (91), 3 states have call predecessors, (91), 3 states have call successors, (91) [2022-11-18 19:35:54,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:54,913 INFO L93 Difference]: Finished difference Result 8343 states and 12258 transitions. [2022-11-18 19:35:54,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:35:54,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 3 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (91), 3 states have call predecessors, (91), 3 states have call successors, (91) Word has length 633 [2022-11-18 19:35:54,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:54,935 INFO L225 Difference]: With dead ends: 8343 [2022-11-18 19:35:54,936 INFO L226 Difference]: Without dead ends: 4184 [2022-11-18 19:35:54,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:35:54,957 INFO L413 NwaCegarLoop]: 5712 mSDtfsCounter, 8 mSDsluCounter, 5699 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11411 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:54,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11411 Invalid, 9 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:35:54,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4184 states. [2022-11-18 19:35:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4184 to 4181. [2022-11-18 19:35:55,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4181 states, 3015 states have (on average 1.3681592039800996) internal successors, (4125), 3078 states have internal predecessors, (4125), 982 states have call successors, (982), 183 states have call predecessors, (982), 182 states have return successors, (988), 963 states have call predecessors, (988), 982 states have call successors, (988) [2022-11-18 19:35:55,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4181 states to 4181 states and 6095 transitions. [2022-11-18 19:35:55,410 INFO L78 Accepts]: Start accepts. Automaton has 4181 states and 6095 transitions. Word has length 633 [2022-11-18 19:35:55,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:55,411 INFO L495 AbstractCegarLoop]: Abstraction has 4181 states and 6095 transitions. [2022-11-18 19:35:55,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 3 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (91), 3 states have call predecessors, (91), 3 states have call successors, (91) [2022-11-18 19:35:55,412 INFO L276 IsEmpty]: Start isEmpty. Operand 4181 states and 6095 transitions. [2022-11-18 19:35:55,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2022-11-18 19:35:55,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:55,442 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 8, 8, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:55,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:55,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:55,671 INFO L420 AbstractCegarLoop]: === Iteration 21 === 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)] === [2022-11-18 19:35:55,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:55,671 INFO L85 PathProgramCache]: Analyzing trace with hash -325740883, now seen corresponding path program 1 times [2022-11-18 19:35:55,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:55,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747539400] [2022-11-18 19:35:55,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:55,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:56,466 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:35:56,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [60913491] [2022-11-18 19:35:56,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:56,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:56,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:56,469 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:56,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:36:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:01,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 9403 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:36:01,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 1007 trivial. 0 not checked. [2022-11-18 19:36:01,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:01,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:01,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747539400] [2022-11-18 19:36:01,508 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:01,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60913491] [2022-11-18 19:36:01,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60913491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:01,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:01,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:36:01,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683339294] [2022-11-18 19:36:01,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:01,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:36:01,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:01,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:36:01,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:01,511 INFO L87 Difference]: Start difference. First operand 4181 states and 6095 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2022-11-18 19:36:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:01,999 INFO L93 Difference]: Finished difference Result 8379 states and 12299 transitions. [2022-11-18 19:36:02,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:36:02,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) Word has length 663 [2022-11-18 19:36:02,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:02,027 INFO L225 Difference]: With dead ends: 8379 [2022-11-18 19:36:02,028 INFO L226 Difference]: Without dead ends: 4215 [2022-11-18 19:36:02,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:02,051 INFO L413 NwaCegarLoop]: 5743 mSDtfsCounter, 22 mSDsluCounter, 5712 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 11455 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:02,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 11455 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:36:02,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2022-11-18 19:36:02,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 4183. [2022-11-18 19:36:02,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4183 states, 3017 states have (on average 1.3679151474975142) internal successors, (4127), 3080 states have internal predecessors, (4127), 982 states have call successors, (982), 183 states have call predecessors, (982), 182 states have return successors, (988), 963 states have call predecessors, (988), 982 states have call successors, (988) [2022-11-18 19:36:02,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4183 states to 4183 states and 6097 transitions. [2022-11-18 19:36:02,623 INFO L78 Accepts]: Start accepts. Automaton has 4183 states and 6097 transitions. Word has length 663 [2022-11-18 19:36:02,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:02,624 INFO L495 AbstractCegarLoop]: Abstraction has 4183 states and 6097 transitions. [2022-11-18 19:36:02,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2022-11-18 19:36:02,625 INFO L276 IsEmpty]: Start isEmpty. Operand 4183 states and 6097 transitions. [2022-11-18 19:36:02,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2022-11-18 19:36:02,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:02,656 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 8, 8, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:02,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:02,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-18 19:36:02,883 INFO L420 AbstractCegarLoop]: === Iteration 22 === 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)] === [2022-11-18 19:36:02,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:02,883 INFO L85 PathProgramCache]: Analyzing trace with hash 234958895, now seen corresponding path program 1 times [2022-11-18 19:36:02,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:02,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114123845] [2022-11-18 19:36:02,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:02,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:03,735 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:03,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619670428] [2022-11-18 19:36:03,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:03,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:03,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:03,737 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:03,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:36:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:08,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 9404 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:36:08,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 602 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2022-11-18 19:36:09,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:09,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:09,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114123845] [2022-11-18 19:36:09,033 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:09,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619670428] [2022-11-18 19:36:09,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619670428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:09,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:09,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:36:09,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334052706] [2022-11-18 19:36:09,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:09,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:36:09,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:09,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:36:09,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:09,037 INFO L87 Difference]: Start difference. First operand 4183 states and 6097 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2022-11-18 19:36:09,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:09,745 INFO L93 Difference]: Finished difference Result 8354 states and 12272 transitions. [2022-11-18 19:36:09,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:36:09,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 663 [2022-11-18 19:36:09,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:09,766 INFO L225 Difference]: With dead ends: 8354 [2022-11-18 19:36:09,766 INFO L226 Difference]: Without dead ends: 4188 [2022-11-18 19:36:09,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:09,784 INFO L413 NwaCegarLoop]: 5709 mSDtfsCounter, 3 mSDsluCounter, 5694 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 11403 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:09,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 11403 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:36:09,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2022-11-18 19:36:10,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 4184. [2022-11-18 19:36:10,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4184 states, 3018 states have (on average 1.36779324055666) internal successors, (4128), 3081 states have internal predecessors, (4128), 982 states have call successors, (982), 183 states have call predecessors, (982), 182 states have return successors, (988), 963 states have call predecessors, (988), 982 states have call successors, (988) [2022-11-18 19:36:10,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4184 states to 4184 states and 6098 transitions. [2022-11-18 19:36:10,306 INFO L78 Accepts]: Start accepts. Automaton has 4184 states and 6098 transitions. Word has length 663 [2022-11-18 19:36:10,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:10,307 INFO L495 AbstractCegarLoop]: Abstraction has 4184 states and 6098 transitions. [2022-11-18 19:36:10,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2022-11-18 19:36:10,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4184 states and 6098 transitions. [2022-11-18 19:36:10,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2022-11-18 19:36:10,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:10,341 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:10,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:10,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 19:36:10,555 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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)] === [2022-11-18 19:36:10,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:10,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1167318899, now seen corresponding path program 1 times [2022-11-18 19:36:10,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:10,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655390202] [2022-11-18 19:36:10,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:10,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:11,376 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:11,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743913230] [2022-11-18 19:36:11,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:11,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:11,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:11,383 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:11,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:36:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:16,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 9410 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:36:16,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 593 proven. 1 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2022-11-18 19:36:16,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:17,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1114 trivial. 0 not checked. [2022-11-18 19:36:17,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:17,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655390202] [2022-11-18 19:36:17,770 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:17,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743913230] [2022-11-18 19:36:17,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743913230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:17,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:36:17,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-18 19:36:17,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46523315] [2022-11-18 19:36:17,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:17,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:36:17,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:17,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:36:17,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:17,780 INFO L87 Difference]: Start difference. First operand 4184 states and 6098 transitions. Second operand has 6 states, 6 states have (on average 71.33333333333333) internal successors, (428), 6 states have internal predecessors, (428), 2 states have call successors, (154), 2 states have call predecessors, (154), 2 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2022-11-18 19:36:18,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:18,292 INFO L93 Difference]: Finished difference Result 8381 states and 12324 transitions. [2022-11-18 19:36:18,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:36:18,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 71.33333333333333) internal successors, (428), 6 states have internal predecessors, (428), 2 states have call successors, (154), 2 states have call predecessors, (154), 2 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) Word has length 666 [2022-11-18 19:36:18,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:18,312 INFO L225 Difference]: With dead ends: 8381 [2022-11-18 19:36:18,312 INFO L226 Difference]: Without dead ends: 4214 [2022-11-18 19:36:18,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1330 GetRequests, 1326 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:18,330 INFO L413 NwaCegarLoop]: 5694 mSDtfsCounter, 66 mSDsluCounter, 11376 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 17070 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:18,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 17070 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:36:18,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4214 states. [2022-11-18 19:36:19,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4214 to 4214. [2022-11-18 19:36:19,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4214 states, 3048 states have (on average 1.3661417322834646) internal successors, (4164), 3111 states have internal predecessors, (4164), 982 states have call successors, (982), 183 states have call predecessors, (982), 182 states have return successors, (988), 963 states have call predecessors, (988), 982 states have call successors, (988) [2022-11-18 19:36:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4214 states to 4214 states and 6134 transitions. [2022-11-18 19:36:19,133 INFO L78 Accepts]: Start accepts. Automaton has 4214 states and 6134 transitions. Word has length 666 [2022-11-18 19:36:19,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:19,134 INFO L495 AbstractCegarLoop]: Abstraction has 4214 states and 6134 transitions. [2022-11-18 19:36:19,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.33333333333333) internal successors, (428), 6 states have internal predecessors, (428), 2 states have call successors, (154), 2 states have call predecessors, (154), 2 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2022-11-18 19:36:19,135 INFO L276 IsEmpty]: Start isEmpty. Operand 4214 states and 6134 transitions. [2022-11-18 19:36:19,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2022-11-18 19:36:19,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:19,178 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 8, 8, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:19,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:19,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 19:36:19,391 INFO L420 AbstractCegarLoop]: === Iteration 24 === 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)] === [2022-11-18 19:36:19,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:19,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1104036029, now seen corresponding path program 1 times [2022-11-18 19:36:19,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:19,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804389069] [2022-11-18 19:36:19,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:19,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:20,302 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:20,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145651041] [2022-11-18 19:36:20,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:20,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:20,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:20,307 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:20,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:36:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:26,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 9252 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:36:26,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 545 proven. 28 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2022-11-18 19:36:26,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:27,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 1036 trivial. 0 not checked. [2022-11-18 19:36:27,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:27,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804389069] [2022-11-18 19:36:27,299 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:27,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145651041] [2022-11-18 19:36:27,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145651041] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:27,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:36:27,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-11-18 19:36:27,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174567708] [2022-11-18 19:36:27,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:27,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:36:27,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:27,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:36:27,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:36:27,303 INFO L87 Difference]: Start difference. First operand 4214 states and 6134 transitions. Second operand has 8 states, 8 states have (on average 53.625) internal successors, (429), 8 states have internal predecessors, (429), 2 states have call successors, (147), 2 states have call predecessors, (147), 2 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2022-11-18 19:36:27,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:27,883 INFO L93 Difference]: Finished difference Result 8435 states and 12387 transitions. [2022-11-18 19:36:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:36:27,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 53.625) internal successors, (429), 8 states have internal predecessors, (429), 2 states have call successors, (147), 2 states have call predecessors, (147), 2 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) Word has length 653 [2022-11-18 19:36:27,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:27,902 INFO L225 Difference]: With dead ends: 8435 [2022-11-18 19:36:27,902 INFO L226 Difference]: Without dead ends: 4238 [2022-11-18 19:36:27,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1304 GetRequests, 1294 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:36:27,919 INFO L413 NwaCegarLoop]: 5694 mSDtfsCounter, 109 mSDsluCounter, 11376 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 17070 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:27,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 17070 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:36:27,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4238 states. [2022-11-18 19:36:28,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4238 to 4238. [2022-11-18 19:36:28,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 3072 states have (on average 1.365234375) internal successors, (4194), 3135 states have internal predecessors, (4194), 982 states have call successors, (982), 183 states have call predecessors, (982), 182 states have return successors, (988), 963 states have call predecessors, (988), 982 states have call successors, (988) [2022-11-18 19:36:28,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 6164 transitions. [2022-11-18 19:36:28,476 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 6164 transitions. Word has length 653 [2022-11-18 19:36:28,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:28,476 INFO L495 AbstractCegarLoop]: Abstraction has 4238 states and 6164 transitions. [2022-11-18 19:36:28,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 53.625) internal successors, (429), 8 states have internal predecessors, (429), 2 states have call successors, (147), 2 states have call predecessors, (147), 2 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2022-11-18 19:36:28,477 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 6164 transitions. [2022-11-18 19:36:28,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2022-11-18 19:36:28,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:28,500 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:28,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-18 19:36:28,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:28,727 INFO L420 AbstractCegarLoop]: === Iteration 25 === 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)] === [2022-11-18 19:36:28,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:28,727 INFO L85 PathProgramCache]: Analyzing trace with hash -553985302, now seen corresponding path program 1 times [2022-11-18 19:36:28,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:28,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245210137] [2022-11-18 19:36:28,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:28,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:29,481 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:29,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485724749] [2022-11-18 19:36:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:29,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:29,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:29,487 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:29,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:36:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 9510 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:36:35,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 593 proven. 0 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2022-11-18 19:36:35,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:35,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:35,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245210137] [2022-11-18 19:36:35,694 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:35,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485724749] [2022-11-18 19:36:35,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485724749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:35,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:35,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:36:35,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037337803] [2022-11-18 19:36:35,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:35,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:35,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:35,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:35,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:35,697 INFO L87 Difference]: Start difference. First operand 4238 states and 6164 transitions. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 3 states have call successors, (103), 2 states have call predecessors, (103), 3 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-18 19:36:36,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:36,329 INFO L93 Difference]: Finished difference Result 8543 states and 12515 transitions. [2022-11-18 19:36:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:36:36,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 3 states have call successors, (103), 2 states have call predecessors, (103), 3 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) Word has length 686 [2022-11-18 19:36:36,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:36,362 INFO L225 Difference]: With dead ends: 8543 [2022-11-18 19:36:36,362 INFO L226 Difference]: Without dead ends: 4322 [2022-11-18 19:36:36,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:36:36,391 INFO L413 NwaCegarLoop]: 5708 mSDtfsCounter, 64 mSDsluCounter, 11377 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 17085 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:36,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 17085 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:36:36,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4322 states. [2022-11-18 19:36:36,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4322 to 4322. [2022-11-18 19:36:36,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 3154 states have (on average 1.3617628408370324) internal successors, (4295), 3217 states have internal predecessors, (4295), 983 states have call successors, (983), 184 states have call predecessors, (983), 183 states have return successors, (989), 964 states have call predecessors, (989), 983 states have call successors, (989) [2022-11-18 19:36:36,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 6267 transitions. [2022-11-18 19:36:36,993 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 6267 transitions. Word has length 686 [2022-11-18 19:36:36,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:36,994 INFO L495 AbstractCegarLoop]: Abstraction has 4322 states and 6267 transitions. [2022-11-18 19:36:36,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 3 states have call successors, (103), 2 states have call predecessors, (103), 3 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-18 19:36:36,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 6267 transitions. [2022-11-18 19:36:37,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2022-11-18 19:36:37,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:37,012 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:37,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:37,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:37,213 INFO L420 AbstractCegarLoop]: === Iteration 26 === 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)] === [2022-11-18 19:36:37,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:37,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1062325151, now seen corresponding path program 1 times [2022-11-18 19:36:37,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:37,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043332785] [2022-11-18 19:36:37,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:37,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:37,948 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:37,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117127434] [2022-11-18 19:36:37,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:37,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:37,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:37,950 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:37,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:36:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:44,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 9319 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:36:44,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:44,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2022-11-18 19:36:44,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:44,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:44,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043332785] [2022-11-18 19:36:44,301 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:44,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117127434] [2022-11-18 19:36:44,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117127434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:44,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:44,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:44,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317222441] [2022-11-18 19:36:44,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:44,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:36:44,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:44,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:36:44,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:36:44,304 INFO L87 Difference]: Start difference. First operand 4322 states and 6267 transitions. Second operand has 5 states, 5 states have (on average 61.4) internal successors, (307), 4 states have internal predecessors, (307), 2 states have call successors, (95), 2 states have call predecessors, (95), 3 states have return successors, (88), 3 states have call predecessors, (88), 2 states have call successors, (88) [2022-11-18 19:36:44,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:44,715 INFO L93 Difference]: Finished difference Result 8629 states and 12595 transitions. [2022-11-18 19:36:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:36:44,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 61.4) internal successors, (307), 4 states have internal predecessors, (307), 2 states have call successors, (95), 2 states have call predecessors, (95), 3 states have return successors, (88), 3 states have call predecessors, (88), 2 states have call successors, (88) Word has length 667 [2022-11-18 19:36:44,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:44,745 INFO L225 Difference]: With dead ends: 8629 [2022-11-18 19:36:44,746 INFO L226 Difference]: Without dead ends: 4324 [2022-11-18 19:36:44,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:36:44,765 INFO L413 NwaCegarLoop]: 5709 mSDtfsCounter, 186 mSDsluCounter, 16901 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 22610 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:44,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 22610 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:36:44,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4324 states. [2022-11-18 19:36:45,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4324 to 4322. [2022-11-18 19:36:45,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 3154 states have (on average 1.3614457831325302) internal successors, (4294), 3217 states have internal predecessors, (4294), 983 states have call successors, (983), 184 states have call predecessors, (983), 183 states have return successors, (989), 964 states have call predecessors, (989), 983 states have call successors, (989) [2022-11-18 19:36:45,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 6266 transitions. [2022-11-18 19:36:45,234 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 6266 transitions. Word has length 667 [2022-11-18 19:36:45,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:45,235 INFO L495 AbstractCegarLoop]: Abstraction has 4322 states and 6266 transitions. [2022-11-18 19:36:45,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.4) internal successors, (307), 4 states have internal predecessors, (307), 2 states have call successors, (95), 2 states have call predecessors, (95), 3 states have return successors, (88), 3 states have call predecessors, (88), 2 states have call successors, (88) [2022-11-18 19:36:45,236 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 6266 transitions. [2022-11-18 19:36:45,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2022-11-18 19:36:45,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:45,258 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:45,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-18 19:36:45,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:45,459 INFO L420 AbstractCegarLoop]: === Iteration 27 === 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)] === [2022-11-18 19:36:45,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:45,459 INFO L85 PathProgramCache]: Analyzing trace with hash -31284253, now seen corresponding path program 1 times [2022-11-18 19:36:45,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:45,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140441255] [2022-11-18 19:36:45,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:45,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:46,345 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:46,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [957301801] [2022-11-18 19:36:46,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:46,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:46,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:46,346 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:46,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:36:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:53,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 9320 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:36:53,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2022-11-18 19:36:53,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:53,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:53,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140441255] [2022-11-18 19:36:53,579 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:53,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957301801] [2022-11-18 19:36:53,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957301801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:53,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:53,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 19:36:53,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892629645] [2022-11-18 19:36:53,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:53,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:36:53,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:53,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:36:53,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:36:53,583 INFO L87 Difference]: Start difference. First operand 4322 states and 6266 transitions. Second operand has 12 states, 11 states have (on average 27.272727272727273) internal successors, (300), 11 states have internal predecessors, (300), 5 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (88), 5 states have call predecessors, (88), 5 states have call successors, (88) [2022-11-18 19:36:55,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:55,518 INFO L93 Difference]: Finished difference Result 9286 states and 13505 transitions. [2022-11-18 19:36:55,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:36:55,519 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 27.272727272727273) internal successors, (300), 11 states have internal predecessors, (300), 5 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (88), 5 states have call predecessors, (88), 5 states have call successors, (88) Word has length 667 [2022-11-18 19:36:55,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:55,538 INFO L225 Difference]: With dead ends: 9286 [2022-11-18 19:36:55,539 INFO L226 Difference]: Without dead ends: 4980 [2022-11-18 19:36:55,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 658 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:36:55,550 INFO L413 NwaCegarLoop]: 6647 mSDtfsCounter, 2157 mSDsluCounter, 63848 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2157 SdHoareTripleChecker+Valid, 70495 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:55,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2157 Valid, 70495 Invalid, 920 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [416 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:36:55,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4980 states. [2022-11-18 19:36:56,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4980 to 4330. [2022-11-18 19:36:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4330 states, 3160 states have (on average 1.360759493670886) internal successors, (4300), 3223 states have internal predecessors, (4300), 985 states have call successors, (985), 184 states have call predecessors, (985), 183 states have return successors, (991), 966 states have call predecessors, (991), 985 states have call successors, (991) [2022-11-18 19:36:56,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4330 states to 4330 states and 6276 transitions. [2022-11-18 19:36:56,069 INFO L78 Accepts]: Start accepts. Automaton has 4330 states and 6276 transitions. Word has length 667 [2022-11-18 19:36:56,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:56,070 INFO L495 AbstractCegarLoop]: Abstraction has 4330 states and 6276 transitions. [2022-11-18 19:36:56,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 27.272727272727273) internal successors, (300), 11 states have internal predecessors, (300), 5 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (88), 5 states have call predecessors, (88), 5 states have call successors, (88) [2022-11-18 19:36:56,070 INFO L276 IsEmpty]: Start isEmpty. Operand 4330 states and 6276 transitions. [2022-11-18 19:36:56,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2022-11-18 19:36:56,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:56,094 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:56,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:56,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 19:36:56,296 INFO L420 AbstractCegarLoop]: === Iteration 28 === 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)] === [2022-11-18 19:36:56,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:56,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1827549374, now seen corresponding path program 1 times [2022-11-18 19:36:56,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:56,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348177940] [2022-11-18 19:36:56,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:56,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:57,029 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:57,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043507815] [2022-11-18 19:36:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:57,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:57,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:57,030 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:57,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:37:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:04,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 9337 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 19:37:04,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:04,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2022-11-18 19:37:04,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:04,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:37:04,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348177940] [2022-11-18 19:37:04,433 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:37:04,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043507815] [2022-11-18 19:37:04,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043507815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:04,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:04,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 19:37:04,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868542900] [2022-11-18 19:37:04,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:04,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:37:04,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:37:04,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:37:04,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:37:04,436 INFO L87 Difference]: Start difference. First operand 4330 states and 6276 transitions. Second operand has 12 states, 11 states have (on average 27.454545454545453) internal successors, (302), 11 states have internal predecessors, (302), 5 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (88), 5 states have call predecessors, (88), 5 states have call successors, (88) [2022-11-18 19:37:06,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:06,338 INFO L93 Difference]: Finished difference Result 9953 states and 14509 transitions. [2022-11-18 19:37:06,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:37:06,339 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 27.454545454545453) internal successors, (302), 11 states have internal predecessors, (302), 5 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (88), 5 states have call predecessors, (88), 5 states have call successors, (88) Word has length 669 [2022-11-18 19:37:06,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:06,358 INFO L225 Difference]: With dead ends: 9953 [2022-11-18 19:37:06,358 INFO L226 Difference]: Without dead ends: 5639 [2022-11-18 19:37:06,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 660 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:37:06,372 INFO L413 NwaCegarLoop]: 6776 mSDtfsCounter, 2164 mSDsluCounter, 65002 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2300 SdHoareTripleChecker+Valid, 71778 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:06,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2300 Valid, 71778 Invalid, 961 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [421 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:37:06,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2022-11-18 19:37:06,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 4330. [2022-11-18 19:37:06,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4330 states, 3160 states have (on average 1.360759493670886) internal successors, (4300), 3223 states have internal predecessors, (4300), 985 states have call successors, (985), 184 states have call predecessors, (985), 183 states have return successors, (991), 966 states have call predecessors, (991), 985 states have call successors, (991) [2022-11-18 19:37:06,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4330 states to 4330 states and 6276 transitions. [2022-11-18 19:37:06,840 INFO L78 Accepts]: Start accepts. Automaton has 4330 states and 6276 transitions. Word has length 669 [2022-11-18 19:37:06,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:06,841 INFO L495 AbstractCegarLoop]: Abstraction has 4330 states and 6276 transitions. [2022-11-18 19:37:06,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 27.454545454545453) internal successors, (302), 11 states have internal predecessors, (302), 5 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (88), 5 states have call predecessors, (88), 5 states have call successors, (88) [2022-11-18 19:37:06,841 INFO L276 IsEmpty]: Start isEmpty. Operand 4330 states and 6276 transitions. [2022-11-18 19:37:06,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2022-11-18 19:37:06,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:06,862 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 8, 8, 8, 8, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:06,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:07,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 19:37:07,067 INFO L420 AbstractCegarLoop]: === Iteration 29 === 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)] === [2022-11-18 19:37:07,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:07,067 INFO L85 PathProgramCache]: Analyzing trace with hash 359025748, now seen corresponding path program 1 times [2022-11-18 19:37:07,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:37:07,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109452535] [2022-11-18 19:37:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:07,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:37:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:07,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:37:07,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109452535] [2022-11-18 19:37:07,855 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:37:07,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914219799] [2022-11-18 19:37:07,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:07,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:07,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:37:07,869 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:37:07,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:37:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:15,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 9479 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:37:15,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:15,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2022-11-18 19:37:15,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:15,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914219799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:15,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:15,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 19:37:15,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625479726] [2022-11-18 19:37:15,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:15,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:37:15,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:37:15,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:37:15,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:37:15,546 INFO L87 Difference]: Start difference. First operand 4330 states and 6276 transitions. Second operand has 13 states, 12 states have (on average 26.333333333333332) internal successors, (316), 12 states have internal predecessors, (316), 6 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (92), 6 states have call predecessors, (92), 6 states have call successors, (92) [2022-11-18 19:37:18,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:18,114 INFO L93 Difference]: Finished difference Result 9331 states and 13564 transitions. [2022-11-18 19:37:18,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:37:18,114 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 26.333333333333332) internal successors, (316), 12 states have internal predecessors, (316), 6 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (92), 6 states have call predecessors, (92), 6 states have call successors, (92) Word has length 695 [2022-11-18 19:37:18,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:18,137 INFO L225 Difference]: With dead ends: 9331 [2022-11-18 19:37:18,137 INFO L226 Difference]: Without dead ends: 5017 [2022-11-18 19:37:18,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 686 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:37:18,152 INFO L413 NwaCegarLoop]: 6665 mSDtfsCounter, 2178 mSDsluCounter, 70580 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 77245 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:18,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2180 Valid, 77245 Invalid, 1113 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [454 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:37:18,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5017 states. [2022-11-18 19:37:18,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5017 to 4336. [2022-11-18 19:37:18,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4336 states, 3163 states have (on average 1.3604173253240595) internal successors, (4303), 3225 states have internal predecessors, (4303), 988 states have call successors, (988), 184 states have call predecessors, (988), 183 states have return successors, (994), 969 states have call predecessors, (994), 988 states have call successors, (994) [2022-11-18 19:37:18,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4336 states to 4336 states and 6285 transitions. [2022-11-18 19:37:18,775 INFO L78 Accepts]: Start accepts. Automaton has 4336 states and 6285 transitions. Word has length 695 [2022-11-18 19:37:18,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:18,776 INFO L495 AbstractCegarLoop]: Abstraction has 4336 states and 6285 transitions. [2022-11-18 19:37:18,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 26.333333333333332) internal successors, (316), 12 states have internal predecessors, (316), 6 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (92), 6 states have call predecessors, (92), 6 states have call successors, (92) [2022-11-18 19:37:18,776 INFO L276 IsEmpty]: Start isEmpty. Operand 4336 states and 6285 transitions. [2022-11-18 19:37:18,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2022-11-18 19:37:18,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:18,805 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 16, 16, 16, 12, 12, 9, 9, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:18,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:19,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 19:37:19,006 INFO L420 AbstractCegarLoop]: === Iteration 30 === 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)] === [2022-11-18 19:37:19,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:19,007 INFO L85 PathProgramCache]: Analyzing trace with hash 321913182, now seen corresponding path program 1 times [2022-11-18 19:37:19,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:37:19,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187614514] [2022-11-18 19:37:19,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:19,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:37:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:19,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:37:19,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187614514] [2022-11-18 19:37:19,766 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:37:19,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452394889] [2022-11-18 19:37:19,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:19,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:19,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:37:19,771 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:37:19,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:37:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:29,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 11475 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:37:29,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:29,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1790 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 1316 trivial. 0 not checked. [2022-11-18 19:37:29,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:29,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452394889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:29,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:29,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:37:29,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142157071] [2022-11-18 19:37:29,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:29,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:37:29,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:37:29,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:37:29,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:29,584 INFO L87 Difference]: Start difference. First operand 4336 states and 6285 transitions. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 2 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2022-11-18 19:37:30,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:30,176 INFO L93 Difference]: Finished difference Result 8667 states and 12567 transitions. [2022-11-18 19:37:30,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:37:30,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 2 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) Word has length 925 [2022-11-18 19:37:30,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:30,196 INFO L225 Difference]: With dead ends: 8667 [2022-11-18 19:37:30,196 INFO L226 Difference]: Without dead ends: 4348 [2022-11-18 19:37:30,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 923 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:30,212 INFO L413 NwaCegarLoop]: 5708 mSDtfsCounter, 10 mSDsluCounter, 5699 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 11407 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:30,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 11407 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:37:30,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4348 states. [2022-11-18 19:37:30,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4348 to 4337. [2022-11-18 19:37:30,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4337 states, 3164 states have (on average 1.3603034134007586) internal successors, (4304), 3226 states have internal predecessors, (4304), 988 states have call successors, (988), 184 states have call predecessors, (988), 183 states have return successors, (994), 969 states have call predecessors, (994), 988 states have call successors, (994) [2022-11-18 19:37:30,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4337 states to 4337 states and 6286 transitions. [2022-11-18 19:37:30,738 INFO L78 Accepts]: Start accepts. Automaton has 4337 states and 6286 transitions. Word has length 925 [2022-11-18 19:37:30,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:30,739 INFO L495 AbstractCegarLoop]: Abstraction has 4337 states and 6286 transitions. [2022-11-18 19:37:30,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 2 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2022-11-18 19:37:30,739 INFO L276 IsEmpty]: Start isEmpty. Operand 4337 states and 6286 transitions. [2022-11-18 19:37:30,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 902 [2022-11-18 19:37:30,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:30,762 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 15, 15, 15, 12, 12, 8, 8, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:30,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:30,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:30,963 INFO L420 AbstractCegarLoop]: === Iteration 31 === 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)] === [2022-11-18 19:37:30,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:30,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2067197260, now seen corresponding path program 1 times [2022-11-18 19:37:30,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:37:30,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472458941] [2022-11-18 19:37:30,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:30,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:37:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:31,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:37:31,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472458941] [2022-11-18 19:37:31,886 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:37:31,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827915699] [2022-11-18 19:37:31,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:31,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:31,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:37:31,888 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:37:31,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 19:37:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:40,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 11303 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:37:40,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:40,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 555 proven. 0 refuted. 0 times theorem prover too weak. 1143 trivial. 0 not checked. [2022-11-18 19:37:40,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:40,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827915699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:40,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:40,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:37:40,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863616687] [2022-11-18 19:37:40,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:40,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:37:40,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:37:40,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:37:40,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:40,607 INFO L87 Difference]: Start difference. First operand 4337 states and 6286 transitions. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 2 states have call successors, (125), 2 states have call predecessors, (125), 2 states have return successors, (121), 2 states have call predecessors, (121), 2 states have call successors, (121) [2022-11-18 19:37:41,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:41,170 INFO L93 Difference]: Finished difference Result 8662 states and 12556 transitions. [2022-11-18 19:37:41,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:37:41,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 2 states have call successors, (125), 2 states have call predecessors, (125), 2 states have return successors, (121), 2 states have call predecessors, (121), 2 states have call successors, (121) Word has length 901 [2022-11-18 19:37:41,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:41,189 INFO L225 Difference]: With dead ends: 8662 [2022-11-18 19:37:41,189 INFO L226 Difference]: Without dead ends: 4342 [2022-11-18 19:37:41,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 899 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:41,202 INFO L413 NwaCegarLoop]: 5708 mSDtfsCounter, 2 mSDsluCounter, 5700 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 11408 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:41,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 11408 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:37:41,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4342 states. [2022-11-18 19:37:41,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4342 to 4338. [2022-11-18 19:37:41,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 3165 states have (on average 1.3601895734597156) internal successors, (4305), 3227 states have internal predecessors, (4305), 988 states have call successors, (988), 184 states have call predecessors, (988), 183 states have return successors, (994), 969 states have call predecessors, (994), 988 states have call successors, (994) [2022-11-18 19:37:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 6287 transitions. [2022-11-18 19:37:41,739 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 6287 transitions. Word has length 901 [2022-11-18 19:37:41,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:41,740 INFO L495 AbstractCegarLoop]: Abstraction has 4338 states and 6287 transitions. [2022-11-18 19:37:41,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 2 states have call successors, (125), 2 states have call predecessors, (125), 2 states have return successors, (121), 2 states have call predecessors, (121), 2 states have call successors, (121) [2022-11-18 19:37:41,740 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 6287 transitions. [2022-11-18 19:37:41,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2022-11-18 19:37:41,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:41,763 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 17, 17, 17, 10, 10, 10, 10, 8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:41,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:41,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:41,965 INFO L420 AbstractCegarLoop]: === Iteration 32 === 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)] === [2022-11-18 19:37:41,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:41,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1263925141, now seen corresponding path program 1 times [2022-11-18 19:37:41,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:37:41,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304944784] [2022-11-18 19:37:41,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:41,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:37:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:42,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:37:42,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304944784] [2022-11-18 19:37:42,947 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:37:42,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401696186] [2022-11-18 19:37:42,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:42,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:42,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:37:42,951 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:37:42,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 19:37:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:51,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 10534 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:37:51,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 651 proven. 1 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2022-11-18 19:37:52,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:37:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2022-11-18 19:37:52,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401696186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:37:52,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:37:52,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-18 19:37:52,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70475001] [2022-11-18 19:37:52,890 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:37:52,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:37:52,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:37:52,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:37:52,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:37:52,895 INFO L87 Difference]: Start difference. First operand 4338 states and 6287 transitions. Second operand has 6 states, 6 states have (on average 95.16666666666667) internal successors, (571), 6 states have internal predecessors, (571), 4 states have call successors, (208), 2 states have call predecessors, (208), 2 states have return successors, (202), 4 states have call predecessors, (202), 4 states have call successors, (202) [2022-11-18 19:37:53,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:53,640 INFO L93 Difference]: Finished difference Result 8674 states and 12574 transitions. [2022-11-18 19:37:53,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:37:53,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 95.16666666666667) internal successors, (571), 6 states have internal predecessors, (571), 4 states have call successors, (208), 2 states have call predecessors, (208), 2 states have return successors, (202), 4 states have call predecessors, (202), 4 states have call successors, (202) Word has length 858 [2022-11-18 19:37:53,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:53,664 INFO L225 Difference]: With dead ends: 8674 [2022-11-18 19:37:53,665 INFO L226 Difference]: Without dead ends: 4353 [2022-11-18 19:37:53,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1714 GetRequests, 1710 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:37:53,789 INFO L413 NwaCegarLoop]: 5712 mSDtfsCounter, 8 mSDsluCounter, 17094 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 22806 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:53,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 22806 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:37:53,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2022-11-18 19:37:54,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 4353. [2022-11-18 19:37:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 3174 states have (on average 1.3591682419659736) internal successors, (4314), 3236 states have internal predecessors, (4314), 994 states have call successors, (994), 184 states have call predecessors, (994), 183 states have return successors, (1000), 975 states have call predecessors, (1000), 994 states have call successors, (1000) [2022-11-18 19:37:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 6308 transitions. [2022-11-18 19:37:54,196 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 6308 transitions. Word has length 858 [2022-11-18 19:37:54,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:54,196 INFO L495 AbstractCegarLoop]: Abstraction has 4353 states and 6308 transitions. [2022-11-18 19:37:54,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.16666666666667) internal successors, (571), 6 states have internal predecessors, (571), 4 states have call successors, (208), 2 states have call predecessors, (208), 2 states have return successors, (202), 4 states have call predecessors, (202), 4 states have call successors, (202) [2022-11-18 19:37:54,197 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 6308 transitions. [2022-11-18 19:37:54,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 867 [2022-11-18 19:37:54,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:54,220 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 16, 16, 16, 11, 11, 10, 10, 9, 9, 9, 9, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:54,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:54,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:54,423 INFO L420 AbstractCegarLoop]: === Iteration 33 === 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)] === [2022-11-18 19:37:54,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:54,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2130760793, now seen corresponding path program 1 times [2022-11-18 19:37:54,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:37:54,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504197654] [2022-11-18 19:37:54,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:54,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:37:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:55,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:37:55,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504197654] [2022-11-18 19:37:55,562 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:37:55,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193543514] [2022-11-18 19:37:55,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:55,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:55,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:37:55,565 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:37:55,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 19:38:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:04,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 10385 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:38:04,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1783 backedges. 672 proven. 34 refuted. 0 times theorem prover too weak. 1077 trivial. 0 not checked. [2022-11-18 19:38:04,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1783 backedges. 3 proven. 48 refuted. 0 times theorem prover too weak. 1732 trivial. 0 not checked. [2022-11-18 19:38:05,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193543514] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:05,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:38:05,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2022-11-18 19:38:05,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944761152] [2022-11-18 19:38:05,810 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:05,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:38:05,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:05,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:38:05,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:38:05,813 INFO L87 Difference]: Start difference. First operand 4353 states and 6308 transitions. Second operand has 7 states, 7 states have (on average 80.42857142857143) internal successors, (563), 7 states have internal predecessors, (563), 6 states have call successors, (205), 2 states have call predecessors, (205), 2 states have return successors, (199), 6 states have call predecessors, (199), 6 states have call successors, (199) [2022-11-18 19:38:06,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:06,441 INFO L93 Difference]: Finished difference Result 8694 states and 12600 transitions. [2022-11-18 19:38:06,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:38:06,442 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 80.42857142857143) internal successors, (563), 7 states have internal predecessors, (563), 6 states have call successors, (205), 2 states have call predecessors, (205), 2 states have return successors, (199), 6 states have call predecessors, (199), 6 states have call successors, (199) Word has length 866 [2022-11-18 19:38:06,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:06,456 INFO L225 Difference]: With dead ends: 8694 [2022-11-18 19:38:06,456 INFO L226 Difference]: Without dead ends: 4358 [2022-11-18 19:38:06,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1730 GetRequests, 1721 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:38:06,468 INFO L413 NwaCegarLoop]: 5714 mSDtfsCounter, 10 mSDsluCounter, 22792 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28506 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:06,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28506 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:38:06,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4358 states. [2022-11-18 19:38:06,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4358 to 4358. [2022-11-18 19:38:06,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4358 states, 3177 states have (on average 1.3588290840415487) internal successors, (4317), 3239 states have internal predecessors, (4317), 996 states have call successors, (996), 184 states have call predecessors, (996), 183 states have return successors, (1002), 977 states have call predecessors, (1002), 996 states have call successors, (1002) [2022-11-18 19:38:06,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4358 states to 4358 states and 6315 transitions. [2022-11-18 19:38:06,878 INFO L78 Accepts]: Start accepts. Automaton has 4358 states and 6315 transitions. Word has length 866 [2022-11-18 19:38:06,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:06,878 INFO L495 AbstractCegarLoop]: Abstraction has 4358 states and 6315 transitions. [2022-11-18 19:38:06,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.42857142857143) internal successors, (563), 7 states have internal predecessors, (563), 6 states have call successors, (205), 2 states have call predecessors, (205), 2 states have return successors, (199), 6 states have call predecessors, (199), 6 states have call successors, (199) [2022-11-18 19:38:06,879 INFO L276 IsEmpty]: Start isEmpty. Operand 4358 states and 6315 transitions. [2022-11-18 19:38:06,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2022-11-18 19:38:06,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:06,903 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 16, 16, 16, 12, 12, 10, 10, 10, 10, 9, 9, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:06,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:07,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-18 19:38:07,104 INFO L420 AbstractCegarLoop]: === Iteration 34 === 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)] === [2022-11-18 19:38:07,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:07,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1616763404, now seen corresponding path program 2 times [2022-11-18 19:38:07,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:07,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667464996] [2022-11-18 19:38:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:07,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:08,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:08,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667464996] [2022-11-18 19:38:08,094 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:38:08,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236433179] [2022-11-18 19:38:08,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:38:08,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:08,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:08,096 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:08,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 19:38:21,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:38:21,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:38:21,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 10408 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:38:21,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 1192 trivial. 0 not checked. [2022-11-18 19:38:21,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:21,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236433179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:21,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:21,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:38:21,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774389852] [2022-11-18 19:38:21,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:21,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:38:21,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:21,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:38:21,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:38:21,704 INFO L87 Difference]: Start difference. First operand 4358 states and 6315 transitions. Second operand has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 2 states have call successors, (119), 2 states have call predecessors, (119), 2 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2022-11-18 19:38:22,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:22,455 INFO L93 Difference]: Finished difference Result 8865 states and 12846 transitions. [2022-11-18 19:38:22,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:38:22,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 2 states have call successors, (119), 2 states have call predecessors, (119), 2 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) Word has length 877 [2022-11-18 19:38:22,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:22,474 INFO L225 Difference]: With dead ends: 8865 [2022-11-18 19:38:22,474 INFO L226 Difference]: Without dead ends: 4524 [2022-11-18 19:38:22,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 878 GetRequests, 875 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:38:22,490 INFO L413 NwaCegarLoop]: 5869 mSDtfsCounter, 179 mSDsluCounter, 11550 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 17419 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:22,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 17419 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:38:22,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4524 states. [2022-11-18 19:38:22,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4524 to 4360. [2022-11-18 19:38:22,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4360 states, 3179 states have (on average 1.358603334381881) internal successors, (4319), 3241 states have internal predecessors, (4319), 996 states have call successors, (996), 184 states have call predecessors, (996), 183 states have return successors, (1002), 977 states have call predecessors, (1002), 996 states have call successors, (1002) [2022-11-18 19:38:22,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4360 states to 4360 states and 6317 transitions. [2022-11-18 19:38:22,974 INFO L78 Accepts]: Start accepts. Automaton has 4360 states and 6317 transitions. Word has length 877 [2022-11-18 19:38:22,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:22,974 INFO L495 AbstractCegarLoop]: Abstraction has 4360 states and 6317 transitions. [2022-11-18 19:38:22,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 2 states have call successors, (119), 2 states have call predecessors, (119), 2 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2022-11-18 19:38:22,975 INFO L276 IsEmpty]: Start isEmpty. Operand 4360 states and 6317 transitions. [2022-11-18 19:38:22,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2022-11-18 19:38:22,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:22,999 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 15, 15, 15, 12, 12, 12, 12, 10, 10, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:23,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:23,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-18 19:38:23,208 INFO L420 AbstractCegarLoop]: === Iteration 35 === 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)] === [2022-11-18 19:38:23,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:23,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1943758831, now seen corresponding path program 1 times [2022-11-18 19:38:23,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:23,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196491425] [2022-11-18 19:38:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:23,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:24,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:24,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196491425] [2022-11-18 19:38:24,083 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:38:24,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752329470] [2022-11-18 19:38:24,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:24,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:24,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:24,084 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:24,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 19:38:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:33,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 11418 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:38:34,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1993 backedges. 697 proven. 0 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2022-11-18 19:38:34,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:34,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752329470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:34,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:34,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:38:34,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042371403] [2022-11-18 19:38:34,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:34,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:38:34,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:34,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:38:34,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:38:34,036 INFO L87 Difference]: Start difference. First operand 4360 states and 6317 transitions. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 2 states have call successors, (127), 2 states have call predecessors, (127), 2 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2022-11-18 19:38:34,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:34,825 INFO L93 Difference]: Finished difference Result 9407 states and 13670 transitions. [2022-11-18 19:38:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:38:34,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 2 states have call successors, (127), 2 states have call predecessors, (127), 2 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) Word has length 956 [2022-11-18 19:38:34,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:34,842 INFO L225 Difference]: With dead ends: 9407 [2022-11-18 19:38:34,842 INFO L226 Difference]: Without dead ends: 5064 [2022-11-18 19:38:34,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 955 GetRequests, 954 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:38:34,854 INFO L413 NwaCegarLoop]: 6079 mSDtfsCounter, 716 mSDsluCounter, 5741 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 11820 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:34,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 11820 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:38:34,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5064 states. [2022-11-18 19:38:35,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5064 to 4371. [2022-11-18 19:38:35,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4371 states, 3190 states have (on average 1.358934169278997) internal successors, (4335), 3252 states have internal predecessors, (4335), 996 states have call successors, (996), 184 states have call predecessors, (996), 183 states have return successors, (1002), 977 states have call predecessors, (1002), 996 states have call successors, (1002) [2022-11-18 19:38:35,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4371 states to 4371 states and 6333 transitions. [2022-11-18 19:38:35,284 INFO L78 Accepts]: Start accepts. Automaton has 4371 states and 6333 transitions. Word has length 956 [2022-11-18 19:38:35,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:35,284 INFO L495 AbstractCegarLoop]: Abstraction has 4371 states and 6333 transitions. [2022-11-18 19:38:35,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 2 states have call successors, (127), 2 states have call predecessors, (127), 2 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2022-11-18 19:38:35,285 INFO L276 IsEmpty]: Start isEmpty. Operand 4371 states and 6333 transitions. [2022-11-18 19:38:35,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2022-11-18 19:38:35,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:35,307 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 17, 17, 17, 12, 12, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:35,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:35,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:35,508 INFO L420 AbstractCegarLoop]: === Iteration 36 === 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)] === [2022-11-18 19:38:35,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:35,509 INFO L85 PathProgramCache]: Analyzing trace with hash -592009574, now seen corresponding path program 1 times [2022-11-18 19:38:35,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:35,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781530753] [2022-11-18 19:38:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:35,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:36,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:36,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781530753] [2022-11-18 19:38:36,251 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:38:36,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402885324] [2022-11-18 19:38:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:36,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:36,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:36,255 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:36,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 19:38:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:46,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 10717 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:38:46,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1963 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 1461 trivial. 0 not checked. [2022-11-18 19:38:46,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:46,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402885324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:46,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:46,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:38:46,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424395112] [2022-11-18 19:38:46,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:46,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:38:46,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:46,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:38:46,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:38:46,581 INFO L87 Difference]: Start difference. First operand 4371 states and 6333 transitions. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 2 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2022-11-18 19:38:47,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:47,053 INFO L93 Difference]: Finished difference Result 8731 states and 12654 transitions. [2022-11-18 19:38:47,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:38:47,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 2 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) Word has length 925 [2022-11-18 19:38:47,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:47,070 INFO L225 Difference]: With dead ends: 8731 [2022-11-18 19:38:47,070 INFO L226 Difference]: Without dead ends: 4377 [2022-11-18 19:38:47,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 923 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:38:47,083 INFO L413 NwaCegarLoop]: 5706 mSDtfsCounter, 3 mSDsluCounter, 5700 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 11406 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:47,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 11406 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:38:47,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2022-11-18 19:38:47,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 4372. [2022-11-18 19:38:47,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4372 states, 3191 states have (on average 1.358821685991852) internal successors, (4336), 3253 states have internal predecessors, (4336), 996 states have call successors, (996), 184 states have call predecessors, (996), 183 states have return successors, (1002), 977 states have call predecessors, (1002), 996 states have call successors, (1002) [2022-11-18 19:38:47,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4372 states to 4372 states and 6334 transitions. [2022-11-18 19:38:47,543 INFO L78 Accepts]: Start accepts. Automaton has 4372 states and 6334 transitions. Word has length 925 [2022-11-18 19:38:47,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:47,544 INFO L495 AbstractCegarLoop]: Abstraction has 4372 states and 6334 transitions. [2022-11-18 19:38:47,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 2 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2022-11-18 19:38:47,544 INFO L276 IsEmpty]: Start isEmpty. Operand 4372 states and 6334 transitions. [2022-11-18 19:38:47,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 928 [2022-11-18 19:38:47,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:47,564 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 17, 17, 17, 12, 12, 11, 11, 10, 10, 10, 10, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:47,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:47,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-18 19:38:47,765 INFO L420 AbstractCegarLoop]: === Iteration 37 === 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)] === [2022-11-18 19:38:47,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:47,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1322954787, now seen corresponding path program 1 times [2022-11-18 19:38:47,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:47,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352388196] [2022-11-18 19:38:47,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:47,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:48,703 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:38:48,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015458027] [2022-11-18 19:38:48,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:48,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:48,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:48,705 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:48,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 19:38:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:59,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 10679 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:38:59,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:59,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1993 backedges. 750 proven. 0 refuted. 0 times theorem prover too weak. 1243 trivial. 0 not checked. [2022-11-18 19:38:59,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:59,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:59,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352388196] [2022-11-18 19:38:59,817 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:38:59,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015458027] [2022-11-18 19:38:59,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015458027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:59,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:59,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 19:38:59,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311047037] [2022-11-18 19:38:59,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:59,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:38:59,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:59,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:38:59,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:38:59,820 INFO L87 Difference]: Start difference. First operand 4372 states and 6334 transitions. Second operand has 14 states, 13 states have (on average 30.46153846153846) internal successors, (396), 13 states have internal predecessors, (396), 6 states have call successors, (128), 2 states have call predecessors, (128), 4 states have return successors, (122), 6 states have call predecessors, (122), 6 states have call successors, (122) [2022-11-18 19:39:03,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:03,102 INFO L93 Difference]: Finished difference Result 9662 states and 14033 transitions. [2022-11-18 19:39:03,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 19:39:03,102 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 30.46153846153846) internal successors, (396), 13 states have internal predecessors, (396), 6 states have call successors, (128), 2 states have call predecessors, (128), 4 states have return successors, (122), 6 states have call predecessors, (122), 6 states have call successors, (122) Word has length 927 [2022-11-18 19:39:03,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:03,127 INFO L225 Difference]: With dead ends: 9662 [2022-11-18 19:39:03,127 INFO L226 Difference]: Without dead ends: 5306 [2022-11-18 19:39:03,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 962 GetRequests, 920 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=350, Invalid=1542, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 19:39:03,143 INFO L413 NwaCegarLoop]: 6812 mSDtfsCounter, 2368 mSDsluCounter, 78749 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 85561 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:03,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2384 Valid, 85561 Invalid, 1501 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [573 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 19:39:03,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5306 states. [2022-11-18 19:39:03,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5306 to 4373. [2022-11-18 19:39:03,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 3191 states have (on average 1.358821685991852) internal successors, (4336), 3254 states have internal predecessors, (4336), 997 states have call successors, (997), 184 states have call predecessors, (997), 183 states have return successors, (1003), 978 states have call predecessors, (1003), 997 states have call successors, (1003) [2022-11-18 19:39:03,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 6336 transitions. [2022-11-18 19:39:03,704 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 6336 transitions. Word has length 927 [2022-11-18 19:39:03,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:03,704 INFO L495 AbstractCegarLoop]: Abstraction has 4373 states and 6336 transitions. [2022-11-18 19:39:03,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 30.46153846153846) internal successors, (396), 13 states have internal predecessors, (396), 6 states have call successors, (128), 2 states have call predecessors, (128), 4 states have return successors, (122), 6 states have call predecessors, (122), 6 states have call successors, (122) [2022-11-18 19:39:03,705 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 6336 transitions. [2022-11-18 19:39:03,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2022-11-18 19:39:03,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:03,734 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 16, 16, 16, 13, 13, 12, 12, 10, 10, 9, 9, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:03,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:03,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-18 19:39:03,935 INFO L420 AbstractCegarLoop]: === Iteration 38 === 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)] === [2022-11-18 19:39:03,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:03,936 INFO L85 PathProgramCache]: Analyzing trace with hash 841602223, now seen corresponding path program 1 times [2022-11-18 19:39:03,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:03,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101634257] [2022-11-18 19:39:03,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:03,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:05,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:05,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101634257] [2022-11-18 19:39:05,223 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:39:05,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156396976] [2022-11-18 19:39:05,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:05,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:05,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:05,225 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:05,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 19:39:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:17,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 11646 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:39:17,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:17,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2184 backedges. 862 proven. 0 refuted. 0 times theorem prover too weak. 1322 trivial. 0 not checked. [2022-11-18 19:39:17,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:39:17,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156396976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:17,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:17,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:39:17,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551794936] [2022-11-18 19:39:17,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:17,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:39:17,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:17,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:39:17,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:17,082 INFO L87 Difference]: Start difference. First operand 4373 states and 6336 transitions. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 2 states have call successors, (132), 2 states have call predecessors, (132), 2 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2022-11-18 19:39:17,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:17,694 INFO L93 Difference]: Finished difference Result 8737 states and 12660 transitions. [2022-11-18 19:39:17,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:39:17,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 2 states have call successors, (132), 2 states have call predecessors, (132), 2 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) Word has length 991 [2022-11-18 19:39:17,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:17,711 INFO L225 Difference]: With dead ends: 8737 [2022-11-18 19:39:17,711 INFO L226 Difference]: Without dead ends: 4381 [2022-11-18 19:39:17,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 989 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:17,724 INFO L413 NwaCegarLoop]: 5700 mSDtfsCounter, 4 mSDsluCounter, 5687 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 11387 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:17,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 11387 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:39:17,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2022-11-18 19:39:18,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 4377. [2022-11-18 19:39:18,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4377 states, 3195 states have (on average 1.3583724569640063) internal successors, (4340), 3258 states have internal predecessors, (4340), 997 states have call successors, (997), 184 states have call predecessors, (997), 183 states have return successors, (1003), 978 states have call predecessors, (1003), 997 states have call successors, (1003) [2022-11-18 19:39:18,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4377 states to 4377 states and 6340 transitions. [2022-11-18 19:39:18,257 INFO L78 Accepts]: Start accepts. Automaton has 4377 states and 6340 transitions. Word has length 991 [2022-11-18 19:39:18,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:18,258 INFO L495 AbstractCegarLoop]: Abstraction has 4377 states and 6340 transitions. [2022-11-18 19:39:18,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 2 states have call successors, (132), 2 states have call predecessors, (132), 2 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2022-11-18 19:39:18,258 INFO L276 IsEmpty]: Start isEmpty. Operand 4377 states and 6340 transitions. [2022-11-18 19:39:18,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1013 [2022-11-18 19:39:18,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:18,285 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 14, 14, 14, 13, 13, 12, 12, 10, 10, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:18,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:18,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-18 19:39:18,486 INFO L420 AbstractCegarLoop]: === Iteration 39 === 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)] === [2022-11-18 19:39:18,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:18,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1318641931, now seen corresponding path program 1 times [2022-11-18 19:39:18,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:18,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454038327] [2022-11-18 19:39:18,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:18,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:19,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:19,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454038327] [2022-11-18 19:39:19,747 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:39:19,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074283849] [2022-11-18 19:39:19,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:19,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:19,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:19,750 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:19,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 19:39:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:31,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 11706 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:39:31,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2383 backedges. 925 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2022-11-18 19:39:31,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:39:31,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074283849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:31,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:31,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:39:31,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100208720] [2022-11-18 19:39:31,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:31,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:39:31,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:31,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:39:31,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:31,163 INFO L87 Difference]: Start difference. First operand 4377 states and 6340 transitions. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 2 states have call successors, (136), 2 states have call predecessors, (136), 2 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2022-11-18 19:39:32,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:32,051 INFO L93 Difference]: Finished difference Result 9205 states and 13349 transitions. [2022-11-18 19:39:32,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:39:32,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 2 states have call successors, (136), 2 states have call predecessors, (136), 2 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) Word has length 1012 [2022-11-18 19:39:32,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:32,070 INFO L225 Difference]: With dead ends: 9205 [2022-11-18 19:39:32,070 INFO L226 Difference]: Without dead ends: 4845 [2022-11-18 19:39:32,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1011 GetRequests, 1010 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:32,085 INFO L413 NwaCegarLoop]: 6068 mSDtfsCounter, 458 mSDsluCounter, 5752 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 11820 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:32,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 11820 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:39:32,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4845 states. [2022-11-18 19:39:32,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4845 to 4380. [2022-11-18 19:39:32,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4380 states, 3198 states have (on average 1.358036272670419) internal successors, (4343), 3261 states have internal predecessors, (4343), 997 states have call successors, (997), 184 states have call predecessors, (997), 183 states have return successors, (1003), 978 states have call predecessors, (1003), 997 states have call successors, (1003) [2022-11-18 19:39:32,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 6343 transitions. [2022-11-18 19:39:32,676 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 6343 transitions. Word has length 1012 [2022-11-18 19:39:32,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:32,677 INFO L495 AbstractCegarLoop]: Abstraction has 4380 states and 6343 transitions. [2022-11-18 19:39:32,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 2 states have call successors, (136), 2 states have call predecessors, (136), 2 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2022-11-18 19:39:32,677 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 6343 transitions. [2022-11-18 19:39:32,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2022-11-18 19:39:32,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:32,705 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 16, 16, 16, 13, 13, 12, 12, 10, 10, 9, 9, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:32,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:32,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:32,906 INFO L420 AbstractCegarLoop]: === Iteration 40 === 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)] === [2022-11-18 19:39:32,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:32,907 INFO L85 PathProgramCache]: Analyzing trace with hash -913071047, now seen corresponding path program 1 times [2022-11-18 19:39:32,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:32,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413201158] [2022-11-18 19:39:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:32,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:34,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:34,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413201158] [2022-11-18 19:39:34,170 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:39:34,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423114140] [2022-11-18 19:39:34,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:34,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:34,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:34,172 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:34,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 19:39:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:46,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 11773 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:39:46,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:46,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2186 backedges. 952 proven. 0 refuted. 0 times theorem prover too weak. 1234 trivial. 0 not checked. [2022-11-18 19:39:46,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:39:46,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423114140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:46,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:46,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:39:46,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816447097] [2022-11-18 19:39:46,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:46,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:39:46,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:46,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:39:46,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:46,125 INFO L87 Difference]: Start difference. First operand 4380 states and 6343 transitions. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 2 states have call successors, (133), 2 states have call predecessors, (133), 2 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2022-11-18 19:39:46,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:46,713 INFO L93 Difference]: Finished difference Result 8747 states and 12668 transitions. [2022-11-18 19:39:46,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:39:46,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 2 states have call successors, (133), 2 states have call predecessors, (133), 2 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) Word has length 995 [2022-11-18 19:39:46,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:46,745 INFO L225 Difference]: With dead ends: 8747 [2022-11-18 19:39:46,745 INFO L226 Difference]: Without dead ends: 4384 [2022-11-18 19:39:46,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 993 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:46,762 INFO L413 NwaCegarLoop]: 5704 mSDtfsCounter, 2 mSDsluCounter, 5701 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11405 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:46,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11405 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:39:46,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4384 states. [2022-11-18 19:39:47,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4384 to 4382. [2022-11-18 19:39:47,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 3200 states have (on average 1.3578125) internal successors, (4345), 3263 states have internal predecessors, (4345), 997 states have call successors, (997), 184 states have call predecessors, (997), 183 states have return successors, (1003), 978 states have call predecessors, (1003), 997 states have call successors, (1003) [2022-11-18 19:39:47,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 6345 transitions. [2022-11-18 19:39:47,351 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 6345 transitions. Word has length 995 [2022-11-18 19:39:47,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:47,352 INFO L495 AbstractCegarLoop]: Abstraction has 4382 states and 6345 transitions. [2022-11-18 19:39:47,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 2 states have call successors, (133), 2 states have call predecessors, (133), 2 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2022-11-18 19:39:47,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 6345 transitions. [2022-11-18 19:39:47,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2022-11-18 19:39:47,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:47,379 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 15, 15, 15, 13, 13, 12, 12, 10, 10, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:47,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:47,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-18 19:39:47,580 INFO L420 AbstractCegarLoop]: === Iteration 41 === 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)] === [2022-11-18 19:39:47,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:47,581 INFO L85 PathProgramCache]: Analyzing trace with hash -452538842, now seen corresponding path program 1 times [2022-11-18 19:39:47,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:47,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284623403] [2022-11-18 19:39:47,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:47,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:48,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:48,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284623403] [2022-11-18 19:39:48,565 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:39:48,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106622905] [2022-11-18 19:39:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:48,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:48,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:48,567 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:48,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 19:40:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:00,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 11601 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:40:00,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:00,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2096 backedges. 811 proven. 1 refuted. 0 times theorem prover too weak. 1284 trivial. 0 not checked. [2022-11-18 19:40:00,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:01,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2096 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2092 trivial. 0 not checked. [2022-11-18 19:40:01,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106622905] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:40:01,763 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:40:01,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-18 19:40:01,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479191141] [2022-11-18 19:40:01,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:01,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:40:01,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:01,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:40:01,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:40:01,767 INFO L87 Difference]: Start difference. First operand 4382 states and 6345 transitions. Second operand has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 2 states have call successors, (212), 2 states have call predecessors, (212), 2 states have return successors, (208), 2 states have call predecessors, (208), 2 states have call successors, (208) [2022-11-18 19:40:02,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:02,574 INFO L93 Difference]: Finished difference Result 8775 states and 12708 transitions. [2022-11-18 19:40:02,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:40:02,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 2 states have call successors, (212), 2 states have call predecessors, (212), 2 states have return successors, (208), 2 states have call predecessors, (208), 2 states have call successors, (208) Word has length 974 [2022-11-18 19:40:02,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:02,596 INFO L225 Difference]: With dead ends: 8775 [2022-11-18 19:40:02,596 INFO L226 Difference]: Without dead ends: 4410 [2022-11-18 19:40:02,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1946 GetRequests, 1942 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:40:02,613 INFO L413 NwaCegarLoop]: 5697 mSDtfsCounter, 25 mSDsluCounter, 17061 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 22758 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:02,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 22758 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:40:02,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4410 states. [2022-11-18 19:40:03,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4410 to 4406. [2022-11-18 19:40:03,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 3224 states have (on average 1.3551488833746899) internal successors, (4369), 3287 states have internal predecessors, (4369), 997 states have call successors, (997), 184 states have call predecessors, (997), 183 states have return successors, (1003), 978 states have call predecessors, (1003), 997 states have call successors, (1003) [2022-11-18 19:40:03,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 6369 transitions. [2022-11-18 19:40:03,209 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 6369 transitions. Word has length 974 [2022-11-18 19:40:03,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:03,210 INFO L495 AbstractCegarLoop]: Abstraction has 4406 states and 6369 transitions. [2022-11-18 19:40:03,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 2 states have call successors, (212), 2 states have call predecessors, (212), 2 states have return successors, (208), 2 states have call predecessors, (208), 2 states have call successors, (208) [2022-11-18 19:40:03,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 6369 transitions. [2022-11-18 19:40:03,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2022-11-18 19:40:03,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:03,238 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 15, 15, 15, 13, 13, 12, 12, 10, 10, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:03,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-11-18 19:40:03,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:03,439 INFO L420 AbstractCegarLoop]: === Iteration 42 === 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)] === [2022-11-18 19:40:03,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:03,440 INFO L85 PathProgramCache]: Analyzing trace with hash -820975121, now seen corresponding path program 1 times [2022-11-18 19:40:03,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:03,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899112714] [2022-11-18 19:40:03,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:03,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:04,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:04,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899112714] [2022-11-18 19:40:04,558 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:40:04,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064664862] [2022-11-18 19:40:04,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:04,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:04,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:04,560 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:04,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 19:40:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:17,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 12101 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:40:17,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2486 backedges. 1042 proven. 0 refuted. 0 times theorem prover too weak. 1444 trivial. 0 not checked. [2022-11-18 19:40:17,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:17,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064664862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:17,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:17,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:40:17,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633569198] [2022-11-18 19:40:17,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:17,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:40:17,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:17,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:40:17,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:40:17,532 INFO L87 Difference]: Start difference. First operand 4406 states and 6369 transitions. Second operand has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 2 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) [2022-11-18 19:40:18,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:18,343 INFO L93 Difference]: Finished difference Result 9559 states and 13848 transitions. [2022-11-18 19:40:18,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:40:18,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 2 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) Word has length 1047 [2022-11-18 19:40:18,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:18,358 INFO L225 Difference]: With dead ends: 9559 [2022-11-18 19:40:18,358 INFO L226 Difference]: Without dead ends: 5170 [2022-11-18 19:40:18,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1046 GetRequests, 1045 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:40:18,369 INFO L413 NwaCegarLoop]: 6482 mSDtfsCounter, 734 mSDsluCounter, 5794 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 12276 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:18,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 12276 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:40:18,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5170 states. [2022-11-18 19:40:18,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5170 to 4410. [2022-11-18 19:40:18,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4410 states, 3228 states have (on average 1.3553283767038413) internal successors, (4375), 3291 states have internal predecessors, (4375), 997 states have call successors, (997), 184 states have call predecessors, (997), 183 states have return successors, (1003), 978 states have call predecessors, (1003), 997 states have call successors, (1003) [2022-11-18 19:40:18,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4410 states to 4410 states and 6375 transitions. [2022-11-18 19:40:18,931 INFO L78 Accepts]: Start accepts. Automaton has 4410 states and 6375 transitions. Word has length 1047 [2022-11-18 19:40:18,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:18,932 INFO L495 AbstractCegarLoop]: Abstraction has 4410 states and 6375 transitions. [2022-11-18 19:40:18,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 2 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) [2022-11-18 19:40:18,933 INFO L276 IsEmpty]: Start isEmpty. Operand 4410 states and 6375 transitions. [2022-11-18 19:40:18,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2022-11-18 19:40:18,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:18,963 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 16, 16, 16, 13, 13, 12, 12, 10, 10, 9, 9, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:19,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:19,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:19,191 INFO L420 AbstractCegarLoop]: === Iteration 43 === 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)] === [2022-11-18 19:40:19,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:19,191 INFO L85 PathProgramCache]: Analyzing trace with hash 134397445, now seen corresponding path program 1 times [2022-11-18 19:40:19,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:19,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011570153] [2022-11-18 19:40:19,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:19,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:20,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:20,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011570153] [2022-11-18 19:40:20,457 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:40:20,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373430054] [2022-11-18 19:40:20,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:20,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:20,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:20,458 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:20,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 19:40:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:33,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 11834 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:40:33,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2203 backedges. 862 proven. 16 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2022-11-18 19:40:33,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2203 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 2180 trivial. 0 not checked. [2022-11-18 19:40:34,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373430054] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:40:34,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:40:34,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-11-18 19:40:34,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684059753] [2022-11-18 19:40:34,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:34,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:40:34,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:34,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:40:34,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:40:34,537 INFO L87 Difference]: Start difference. First operand 4410 states and 6375 transitions. Second operand has 8 states, 8 states have (on average 80.375) internal successors, (643), 8 states have internal predecessors, (643), 2 states have call successors, (219), 2 states have call predecessors, (219), 2 states have return successors, (215), 2 states have call predecessors, (215), 2 states have call successors, (215) [2022-11-18 19:40:35,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:35,431 INFO L93 Difference]: Finished difference Result 8829 states and 12765 transitions. [2022-11-18 19:40:35,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:40:35,432 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 80.375) internal successors, (643), 8 states have internal predecessors, (643), 2 states have call successors, (219), 2 states have call predecessors, (219), 2 states have return successors, (215), 2 states have call predecessors, (215), 2 states have call successors, (215) Word has length 1005 [2022-11-18 19:40:35,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:35,448 INFO L225 Difference]: With dead ends: 8829 [2022-11-18 19:40:35,448 INFO L226 Difference]: Without dead ends: 4436 [2022-11-18 19:40:35,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2008 GetRequests, 1998 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:40:35,461 INFO L413 NwaCegarLoop]: 5698 mSDtfsCounter, 45 mSDsluCounter, 17063 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 22761 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:35,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 22761 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:40:35,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4436 states. [2022-11-18 19:40:36,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4436 to 4433. [2022-11-18 19:40:36,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4433 states, 3251 states have (on average 1.3540449092586897) internal successors, (4402), 3314 states have internal predecessors, (4402), 997 states have call successors, (997), 184 states have call predecessors, (997), 183 states have return successors, (1003), 978 states have call predecessors, (1003), 997 states have call successors, (1003) [2022-11-18 19:40:36,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4433 states to 4433 states and 6402 transitions. [2022-11-18 19:40:36,058 INFO L78 Accepts]: Start accepts. Automaton has 4433 states and 6402 transitions. Word has length 1005 [2022-11-18 19:40:36,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:36,059 INFO L495 AbstractCegarLoop]: Abstraction has 4433 states and 6402 transitions. [2022-11-18 19:40:36,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 80.375) internal successors, (643), 8 states have internal predecessors, (643), 2 states have call successors, (219), 2 states have call predecessors, (219), 2 states have return successors, (215), 2 states have call predecessors, (215), 2 states have call successors, (215) [2022-11-18 19:40:36,060 INFO L276 IsEmpty]: Start isEmpty. Operand 4433 states and 6402 transitions. [2022-11-18 19:40:36,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2022-11-18 19:40:36,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:36,084 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 15, 15, 15, 13, 13, 12, 12, 10, 10, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:36,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:36,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-11-18 19:40:36,285 INFO L420 AbstractCegarLoop]: === Iteration 44 === 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)] === [2022-11-18 19:40:36,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:36,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1340430894, now seen corresponding path program 2 times [2022-11-18 19:40:36,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:36,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921076880] [2022-11-18 19:40:36,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:36,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:37,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:37,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921076880] [2022-11-18 19:40:37,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:40:37,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122433135] [2022-11-18 19:40:37,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:40:37,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:37,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:37,384 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:37,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 19:40:54,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:40:54,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:40:55,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 11626 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:40:55,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2131 backedges. 871 proven. 0 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2022-11-18 19:40:55,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:55,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122433135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:55,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:55,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:40:55,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121484575] [2022-11-18 19:40:55,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:55,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:40:55,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:55,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:40:55,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:40:55,070 INFO L87 Difference]: Start difference. First operand 4433 states and 6402 transitions. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 3 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) [2022-11-18 19:40:55,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:55,773 INFO L93 Difference]: Finished difference Result 9641 states and 13948 transitions. [2022-11-18 19:40:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:40:55,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 3 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) Word has length 984 [2022-11-18 19:40:55,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:55,792 INFO L225 Difference]: With dead ends: 9641 [2022-11-18 19:40:55,792 INFO L226 Difference]: Without dead ends: 5225 [2022-11-18 19:40:55,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 983 GetRequests, 982 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:40:55,894 INFO L413 NwaCegarLoop]: 6528 mSDtfsCounter, 740 mSDsluCounter, 5806 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 12334 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:55,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 12334 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:40:55,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5225 states. [2022-11-18 19:40:56,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5225 to 4433. [2022-11-18 19:40:56,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4433 states, 3251 states have (on average 1.353737311596432) internal successors, (4401), 3314 states have internal predecessors, (4401), 997 states have call successors, (997), 184 states have call predecessors, (997), 183 states have return successors, (1003), 978 states have call predecessors, (1003), 997 states have call successors, (1003) [2022-11-18 19:40:56,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4433 states to 4433 states and 6401 transitions. [2022-11-18 19:40:56,412 INFO L78 Accepts]: Start accepts. Automaton has 4433 states and 6401 transitions. Word has length 984 [2022-11-18 19:40:56,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:56,413 INFO L495 AbstractCegarLoop]: Abstraction has 4433 states and 6401 transitions. [2022-11-18 19:40:56,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 3 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) [2022-11-18 19:40:56,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4433 states and 6401 transitions. [2022-11-18 19:40:56,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1011 [2022-11-18 19:40:56,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:56,434 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 16, 16, 16, 13, 13, 12, 12, 10, 10, 9, 9, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:56,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:56,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:56,635 INFO L420 AbstractCegarLoop]: === Iteration 45 === 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)] === [2022-11-18 19:40:56,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:56,635 INFO L85 PathProgramCache]: Analyzing trace with hash -950332915, now seen corresponding path program 1 times [2022-11-18 19:40:56,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:56,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019375179] [2022-11-18 19:40:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:56,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:57,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:57,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019375179] [2022-11-18 19:40:57,568 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:40:57,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772270128] [2022-11-18 19:40:57,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:57,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:57,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:57,570 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:57,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 19:41:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:13,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 11845 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:41:13,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:13,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 922 proven. 0 refuted. 0 times theorem prover too weak. 1301 trivial. 0 not checked. [2022-11-18 19:41:13,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:41:13,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772270128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:13,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:13,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:41:13,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950270582] [2022-11-18 19:41:13,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:13,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:41:13,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:13,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:41:13,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:41:13,981 INFO L87 Difference]: Start difference. First operand 4433 states and 6401 transitions. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 3 states have call successors, (133), 2 states have call predecessors, (133), 2 states have return successors, (129), 3 states have call predecessors, (129), 3 states have call successors, (129) [2022-11-18 19:41:14,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:14,545 INFO L93 Difference]: Finished difference Result 8849 states and 12778 transitions. [2022-11-18 19:41:14,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:41:14,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 3 states have call successors, (133), 2 states have call predecessors, (133), 2 states have return successors, (129), 3 states have call predecessors, (129), 3 states have call successors, (129) Word has length 1010 [2022-11-18 19:41:14,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:14,565 INFO L225 Difference]: With dead ends: 8849 [2022-11-18 19:41:14,565 INFO L226 Difference]: Without dead ends: 4433 [2022-11-18 19:41:14,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1009 GetRequests, 1008 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:41:14,579 INFO L413 NwaCegarLoop]: 5704 mSDtfsCounter, 0 mSDsluCounter, 5700 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11404 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:14,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11404 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:41:14,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2022-11-18 19:41:15,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4433. [2022-11-18 19:41:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4433 states, 3251 states have (on average 1.353429713934174) internal successors, (4400), 3314 states have internal predecessors, (4400), 997 states have call successors, (997), 184 states have call predecessors, (997), 183 states have return successors, (1003), 978 states have call predecessors, (1003), 997 states have call successors, (1003) [2022-11-18 19:41:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4433 states to 4433 states and 6400 transitions. [2022-11-18 19:41:15,396 INFO L78 Accepts]: Start accepts. Automaton has 4433 states and 6400 transitions. Word has length 1010 [2022-11-18 19:41:15,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:15,397 INFO L495 AbstractCegarLoop]: Abstraction has 4433 states and 6400 transitions. [2022-11-18 19:41:15,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 3 states have call successors, (133), 2 states have call predecessors, (133), 2 states have return successors, (129), 3 states have call predecessors, (129), 3 states have call successors, (129) [2022-11-18 19:41:15,397 INFO L276 IsEmpty]: Start isEmpty. Operand 4433 states and 6400 transitions. [2022-11-18 19:41:15,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 986 [2022-11-18 19:41:15,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:15,423 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 15, 15, 15, 13, 13, 12, 12, 10, 10, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:15,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-11-18 19:41:15,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-11-18 19:41:15,624 INFO L420 AbstractCegarLoop]: === Iteration 46 === 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)] === [2022-11-18 19:41:15,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:15,624 INFO L85 PathProgramCache]: Analyzing trace with hash 371365076, now seen corresponding path program 1 times [2022-11-18 19:41:15,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:15,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056079865] [2022-11-18 19:41:15,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:15,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:16,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:16,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056079865] [2022-11-18 19:41:16,998 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:41:16,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698560784] [2022-11-18 19:41:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:16,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:16,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:16,999 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:17,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 19:41:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:30,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 11626 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:41:30,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2131 backedges. 871 proven. 1 refuted. 0 times theorem prover too weak. 1259 trivial. 0 not checked. [2022-11-18 19:41:30,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:31,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2131 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2127 trivial. 0 not checked. [2022-11-18 19:41:31,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698560784] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:31,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:41:31,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-18 19:41:31,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284274733] [2022-11-18 19:41:31,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:31,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:41:31,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:31,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:41:31,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:41:31,537 INFO L87 Difference]: Start difference. First operand 4433 states and 6400 transitions. Second operand has 6 states, 6 states have (on average 103.83333333333333) internal successors, (623), 6 states have internal predecessors, (623), 2 states have call successors, (205), 2 states have call predecessors, (205), 2 states have return successors, (201), 2 states have call predecessors, (201), 2 states have call successors, (201) [2022-11-18 19:41:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:32,584 INFO L93 Difference]: Finished difference Result 9323 states and 13478 transitions. [2022-11-18 19:41:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:41:32,585 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 103.83333333333333) internal successors, (623), 6 states have internal predecessors, (623), 2 states have call successors, (205), 2 states have call predecessors, (205), 2 states have return successors, (201), 2 states have call predecessors, (201), 2 states have call successors, (201) Word has length 985 [2022-11-18 19:41:32,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:32,606 INFO L225 Difference]: With dead ends: 9323 [2022-11-18 19:41:32,606 INFO L226 Difference]: Without dead ends: 4907 [2022-11-18 19:41:32,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1968 GetRequests, 1964 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:41:32,621 INFO L413 NwaCegarLoop]: 6118 mSDtfsCounter, 463 mSDsluCounter, 11504 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 17622 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:32,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 17622 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:41:32,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2022-11-18 19:41:33,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 4439. [2022-11-18 19:41:33,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4439 states, 3257 states have (on average 1.352778630641695) internal successors, (4406), 3320 states have internal predecessors, (4406), 997 states have call successors, (997), 184 states have call predecessors, (997), 183 states have return successors, (1003), 978 states have call predecessors, (1003), 997 states have call successors, (1003) [2022-11-18 19:41:33,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4439 states to 4439 states and 6406 transitions. [2022-11-18 19:41:33,255 INFO L78 Accepts]: Start accepts. Automaton has 4439 states and 6406 transitions. Word has length 985 [2022-11-18 19:41:33,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:33,256 INFO L495 AbstractCegarLoop]: Abstraction has 4439 states and 6406 transitions. [2022-11-18 19:41:33,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.83333333333333) internal successors, (623), 6 states have internal predecessors, (623), 2 states have call successors, (205), 2 states have call predecessors, (205), 2 states have return successors, (201), 2 states have call predecessors, (201), 2 states have call successors, (201) [2022-11-18 19:41:33,256 INFO L276 IsEmpty]: Start isEmpty. Operand 4439 states and 6406 transitions. [2022-11-18 19:41:33,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2022-11-18 19:41:33,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:33,344 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 15, 15, 15, 13, 13, 12, 12, 10, 10, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:33,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:33,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-11-18 19:41:33,545 INFO L420 AbstractCegarLoop]: === Iteration 47 === 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)] === [2022-11-18 19:41:33,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:33,546 INFO L85 PathProgramCache]: Analyzing trace with hash 2075805456, now seen corresponding path program 1 times [2022-11-18 19:41:33,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:33,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442014085] [2022-11-18 19:41:33,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:33,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:34,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:34,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442014085] [2022-11-18 19:41:34,827 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:41:34,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795394174] [2022-11-18 19:41:34,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:34,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:34,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:34,829 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:34,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d94f692-d2dd-4432-9441-4e471f78c340/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process