./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3d612e3d3aaa54cbaaae78896c02f6ca9c3968df93584b0bde88897a60cfa04a --- 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-5e519f3 [2022-11-03 02:11:01,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:11:01,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:11:01,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:11:01,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:11:01,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:11:01,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:11:01,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:11:01,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:11:01,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:11:01,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:11:01,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:11:01,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:11:01,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:11:01,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:11:01,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:11:01,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:11:01,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:11:01,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:11:01,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:11:01,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:11:01,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:11:01,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:11:01,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:11:01,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:11:01,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:11:01,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:11:01,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:11:01,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:11:01,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:11:01,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:11:01,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:11:01,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:11:01,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:11:01,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:11:01,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:11:01,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:11:01,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:11:01,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:11:01,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:11:01,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:11:01,822 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:11:01,872 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:11:01,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:11:01,873 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:11:01,874 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:11:01,875 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:11:01,875 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:11:01,875 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:11:01,876 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:11:01,876 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:11:01,876 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:11:01,878 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:11:01,878 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:11:01,878 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:11:01,879 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:11:01,879 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:11:01,879 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:11:01,879 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:11:01,880 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:11:01,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:11:01,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:11:01,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:11:01,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:11:01,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:11:01,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:11:01,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:11:01,884 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:11:01,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:11:01,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:11:01,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:11:01,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:11:01,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:11:01,886 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:11:01,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:11:01,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:11:01,887 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:11:01,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:11:01,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:11:01,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:11:01,888 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_7c275976-1408-4273-a92a-9e82d523b5d0/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d612e3d3aaa54cbaaae78896c02f6ca9c3968df93584b0bde88897a60cfa04a [2022-11-03 02:11:02,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:11:02,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:11:02,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:11:02,232 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:11:02,233 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:11:02,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2022-11-03 02:11:02,308 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/bin/utaipan-7li7fVZpFI/data/703e75413/a10dff925f3b455eb18db54961ed09a1/FLAG7f40e91d4 [2022-11-03 02:11:03,327 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:11:03,328 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2022-11-03 02:11:03,387 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/bin/utaipan-7li7fVZpFI/data/703e75413/a10dff925f3b455eb18db54961ed09a1/FLAG7f40e91d4 [2022-11-03 02:11:03,669 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/bin/utaipan-7li7fVZpFI/data/703e75413/a10dff925f3b455eb18db54961ed09a1 [2022-11-03 02:11:03,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:11:03,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:11:03,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:11:03,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:11:03,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:11:03,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:11:03" (1/1) ... [2022-11-03 02:11:03,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ea3675a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:03, skipping insertion in model container [2022-11-03 02:11:03,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:11:03" (1/1) ... [2022-11-03 02:11:03,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:11:03,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:11:07,162 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319618,319631] [2022-11-03 02:11:07,166 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319787,319800] [2022-11-03 02:11:07,166 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319954,319967] [2022-11-03 02:11:07,167 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[320122,320135] [2022-11-03 02:11:07,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:11:07,234 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:11:07,724 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319618,319631] [2022-11-03 02:11:07,725 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319787,319800] [2022-11-03 02:11:07,725 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319954,319967] [2022-11-03 02:11:07,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[320122,320135] [2022-11-03 02:11:07,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:11:08,040 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:11:08,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:08 WrapperNode [2022-11-03 02:11:08,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:11:08,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:11:08,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:11:08,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:11:08,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:08" (1/1) ... [2022-11-03 02:11:08,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:08" (1/1) ... [2022-11-03 02:11:08,432 INFO L138 Inliner]: procedures = 434, calls = 1806, calls flagged for inlining = 214, calls inlined = 197, statements flattened = 4294 [2022-11-03 02:11:08,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:11:08,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:11:08,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:11:08,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:11:08,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:08" (1/1) ... [2022-11-03 02:11:08,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:08" (1/1) ... [2022-11-03 02:11:08,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:08" (1/1) ... [2022-11-03 02:11:08,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:08" (1/1) ... [2022-11-03 02:11:08,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:08" (1/1) ... [2022-11-03 02:11:08,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:08" (1/1) ... [2022-11-03 02:11:08,697 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:08" (1/1) ... [2022-11-03 02:11:08,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:08" (1/1) ... [2022-11-03 02:11:08,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:11:08,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:11:08,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:11:08,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:11:08,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:08" (1/1) ... [2022-11-03 02:11:08,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:11:08,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:11:08,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:11:08,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c275976-1408-4273-a92a-9e82d523b5d0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:11:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure getlinkstatus [2022-11-03 02:11:08,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getlinkstatus [2022-11-03 02:11:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-03 02:11:08,921 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-03 02:11:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 02:11:08,923 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 02:11:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:11:08,923 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:11:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-03 02:11:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-03 02:11:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:11:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:11:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:11:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:11:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:11:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:11:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:11:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:11:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_79 [2022-11-03 02:11:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_79 [2022-11-03 02:11:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_67 [2022-11-03 02:11:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_67 [2022-11-03 02:11:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-03 02:11:08,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-03 02:11:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:11:08,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:11:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:11:08,927 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:11:08,928 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 02:11:08,928 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 02:11:08,928 INFO L130 BoogieDeclarations]: Found specification of procedure fealnx_tx_timeout [2022-11-03 02:11:08,928 INFO L138 BoogieDeclarations]: Found implementation of procedure fealnx_tx_timeout [2022-11-03 02:11:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:11:08,929 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:11:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:11:08,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:11:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:11:08,930 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:11:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure __set_rx_mode [2022-11-03 02:11:08,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_rx_mode [2022-11-03 02:11:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure getlinktype [2022-11-03 02:11:08,931 INFO L138 BoogieDeclarations]: Found implementation of procedure getlinktype [2022-11-03 02:11:08,932 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 02:11:08,933 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 02:11:08,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:11:08,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-03 02:11:08,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-03 02:11:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:11:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:11:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:11:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure reset_rx_descriptors [2022-11-03 02:11:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_rx_descriptors [2022-11-03 02:11:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:11:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:11:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure fealnx_remove_one [2022-11-03 02:11:08,936 INFO L138 BoogieDeclarations]: Found implementation of procedure fealnx_remove_one [2022-11-03 02:11:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:11:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:11:08,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:11:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:11:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-03 02:11:08,937 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-03 02:11:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:11:08,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:11:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 02:11:08,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 02:11:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:11:08,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:11:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:11:08,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:11:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 02:11:08,940 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 02:11:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:11:08,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:11:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:11:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 02:11:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 02:11:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 02:11:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 02:11:08,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:11:08,943 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2022-11-03 02:11:08,943 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2022-11-03 02:11:08,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:11:08,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:11:08,944 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:11:08,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:11:08,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:11:08,946 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:11:08,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:11:08,947 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:11:08,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:11:08,947 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 02:11:08,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 02:11:08,947 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 02:11:08,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 02:11:08,948 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:11:08,948 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:11:08,949 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 02:11:08,949 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 02:11:08,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:11:08,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:11:08,950 INFO L130 BoogieDeclarations]: Found specification of procedure stop_nic_rx [2022-11-03 02:11:08,950 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_nic_rx [2022-11-03 02:11:08,951 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-03 02:11:08,951 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-03 02:11:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:11:08,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:11:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:11:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:11:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:11:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:11:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_close [2022-11-03 02:11:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_close [2022-11-03 02:11:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:11:08,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:11:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 02:11:08,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 02:11:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_netdev_private [2022-11-03 02:11:08,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_netdev_private [2022-11-03 02:11:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure enable_rxtx [2022-11-03 02:11:08,963 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_rxtx [2022-11-03 02:11:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 02:11:08,963 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 02:11:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:11:08,963 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:11:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:11:08,964 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:11:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-03 02:11:08,964 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-03 02:11:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_78 [2022-11-03 02:11:08,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_78 [2022-11-03 02:11:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 02:11:08,965 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 02:11:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-03 02:11:08,965 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-03 02:11:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:11:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure reset_and_disable_rxtx [2022-11-03 02:11:08,965 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_and_disable_rxtx [2022-11-03 02:11:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:11:08,966 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:11:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:11:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 02:11:08,966 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 02:11:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:11:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 02:11:08,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 02:11:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:11:08,967 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:11:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_netdev_private [2022-11-03 02:11:08,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_netdev_private [2022-11-03 02:11:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:11:08,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:11:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_open [2022-11-03 02:11:08,968 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_open [2022-11-03 02:11:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:11:08,968 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:11:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:11:08,968 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:11:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 02:11:08,969 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 02:11:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure stop_nic_rxtx [2022-11-03 02:11:08,969 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_nic_rxtx [2022-11-03 02:11:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure m80x_send_cmd_to_phy [2022-11-03 02:11:08,969 INFO L138 BoogieDeclarations]: Found implementation of procedure m80x_send_cmd_to_phy [2022-11-03 02:11:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:11:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_rx_buffers [2022-11-03 02:11:08,970 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_rx_buffers [2022-11-03 02:11:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:11:08,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:11:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:11:08,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:11:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-03 02:11:08,971 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-03 02:11:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 02:11:08,971 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 02:11:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:11:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:11:08,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:11:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fealnx_exit_14_2 [2022-11-03 02:11:08,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fealnx_exit_14_2 [2022-11-03 02:11:09,960 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:11:09,964 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:11:10,909 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:11:13,973 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:11:14,092 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:11:15,695 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:11:15,696 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:11:15,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:11:15 BoogieIcfgContainer [2022-11-03 02:11:15,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:11:15,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:11:15,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:11:15,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:11:15,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:11:03" (1/3) ... [2022-11-03 02:11:15,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355e512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:11:15, skipping insertion in model container [2022-11-03 02:11:15,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:08" (2/3) ... [2022-11-03 02:11:15,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355e512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:11:15, skipping insertion in model container [2022-11-03 02:11:15,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:11:15" (3/3) ... [2022-11-03 02:11:15,715 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2022-11-03 02:11:15,742 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:11:15,743 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 02:11:15,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:11:15,881 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@19f53d12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:11:15,881 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 02:11:15,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 1124 states, 651 states have (on average 1.2995391705069124) internal successors, (846), 672 states have internal predecessors, (846), 389 states have call successors, (389), 82 states have call predecessors, (389), 81 states have return successors, (383), 380 states have call predecessors, (383), 383 states have call successors, (383) [2022-11-03 02:11:15,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-03 02:11:15,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:15,928 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:11:15,929 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)] === [2022-11-03 02:11:15,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:15,938 INFO L85 PathProgramCache]: Analyzing trace with hash 969674018, now seen corresponding path program 1 times [2022-11-03 02:11:15,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:15,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016250402] [2022-11-03 02:11:15,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:15,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-03 02:11:16,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:16,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016250402] [2022-11-03 02:11:16,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016250402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:16,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:16,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:11:16,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704391097] [2022-11-03 02:11:16,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:16,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:16,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:16,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:16,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:16,920 INFO L87 Difference]: Start difference. First operand has 1124 states, 651 states have (on average 1.2995391705069124) internal successors, (846), 672 states have internal predecessors, (846), 389 states have call successors, (389), 82 states have call predecessors, (389), 81 states have return successors, (383), 380 states have call predecessors, (383), 383 states have call successors, (383) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:11:19,625 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 [] [2022-11-03 02:11:21,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:21,783 INFO L93 Difference]: Finished difference Result 3257 states and 4760 transitions. [2022-11-03 02:11:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:11:21,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2022-11-03 02:11:21,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:21,831 INFO L225 Difference]: With dead ends: 3257 [2022-11-03 02:11:21,832 INFO L226 Difference]: Without dead ends: 2142 [2022-11-03 02:11:21,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:21,848 INFO L413 NwaCegarLoop]: 1712 mSDtfsCounter, 1495 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:21,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 3037 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 522 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-03 02:11:21,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2022-11-03 02:11:22,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2138. [2022-11-03 02:11:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 1254 states have (on average 1.2926634768740033) internal successors, (1621), 1295 states have internal predecessors, (1621), 723 states have call successors, (723), 159 states have call predecessors, (723), 158 states have return successors, (719), 713 states have call predecessors, (719), 719 states have call successors, (719) [2022-11-03 02:11:22,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 3063 transitions. [2022-11-03 02:11:22,113 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 3063 transitions. Word has length 111 [2022-11-03 02:11:22,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:22,114 INFO L495 AbstractCegarLoop]: Abstraction has 2138 states and 3063 transitions. [2022-11-03 02:11:22,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:11:22,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 3063 transitions. [2022-11-03 02:11:22,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 02:11:22,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:22,121 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:11:22,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:11:22,122 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:11:22,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:22,123 INFO L85 PathProgramCache]: Analyzing trace with hash 679201334, now seen corresponding path program 1 times [2022-11-03 02:11:22,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:22,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835713600] [2022-11-03 02:11:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:22,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:22,555 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-03 02:11:22,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:22,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835713600] [2022-11-03 02:11:22,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835713600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:22,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:22,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:11:22,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066430213] [2022-11-03 02:11:22,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:22,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:22,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:22,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:22,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:22,568 INFO L87 Difference]: Start difference. First operand 2138 states and 3063 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:11:26,990 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 [] [2022-11-03 02:11:28,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:28,224 INFO L93 Difference]: Finished difference Result 6046 states and 8650 transitions. [2022-11-03 02:11:28,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:11:28,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-11-03 02:11:28,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:28,255 INFO L225 Difference]: With dead ends: 6046 [2022-11-03 02:11:28,255 INFO L226 Difference]: Without dead ends: 3927 [2022-11-03 02:11:28,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:28,269 INFO L413 NwaCegarLoop]: 1712 mSDtfsCounter, 1347 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:28,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 3017 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 514 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-11-03 02:11:28,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2022-11-03 02:11:28,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 3897. [2022-11-03 02:11:28,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3897 states, 2281 states have (on average 1.288908373520386) internal successors, (2940), 2357 states have internal predecessors, (2940), 1308 states have call successors, (1308), 308 states have call predecessors, (1308), 305 states have return successors, (1322), 1281 states have call predecessors, (1322), 1304 states have call successors, (1322) [2022-11-03 02:11:28,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 5570 transitions. [2022-11-03 02:11:28,630 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 5570 transitions. Word has length 113 [2022-11-03 02:11:28,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:28,631 INFO L495 AbstractCegarLoop]: Abstraction has 3897 states and 5570 transitions. [2022-11-03 02:11:28,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:11:28,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 5570 transitions. [2022-11-03 02:11:28,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 02:11:28,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:28,634 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:11:28,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:11:28,635 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:11:28,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:28,636 INFO L85 PathProgramCache]: Analyzing trace with hash 799247234, now seen corresponding path program 1 times [2022-11-03 02:11:28,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:28,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419081063] [2022-11-03 02:11:28,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:28,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:29,100 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-03 02:11:29,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:29,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419081063] [2022-11-03 02:11:29,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419081063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:29,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:29,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:11:29,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771736220] [2022-11-03 02:11:29,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:29,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:29,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:29,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:29,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:29,106 INFO L87 Difference]: Start difference. First operand 3897 states and 5570 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:11:31,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:33,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:35,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:38,345 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 [] [2022-11-03 02:11:39,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:39,012 INFO L93 Difference]: Finished difference Result 11379 states and 16255 transitions. [2022-11-03 02:11:39,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:11:39,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2022-11-03 02:11:39,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:39,069 INFO L225 Difference]: With dead ends: 11379 [2022-11-03 02:11:39,069 INFO L226 Difference]: Without dead ends: 7501 [2022-11-03 02:11:39,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:39,094 INFO L413 NwaCegarLoop]: 1916 mSDtfsCounter, 1487 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:39,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 3213 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 547 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2022-11-03 02:11:39,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2022-11-03 02:11:39,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 7467. [2022-11-03 02:11:39,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7467 states, 4391 states have (on average 1.2917330904122069) internal successors, (5672), 4547 states have internal predecessors, (5672), 2476 states have call successors, (2476), 608 states have call predecessors, (2476), 597 states have return successors, (2518), 2409 states have call predecessors, (2518), 2472 states have call successors, (2518) [2022-11-03 02:11:39,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7467 states to 7467 states and 10666 transitions. [2022-11-03 02:11:39,672 INFO L78 Accepts]: Start accepts. Automaton has 7467 states and 10666 transitions. Word has length 116 [2022-11-03 02:11:39,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:39,675 INFO L495 AbstractCegarLoop]: Abstraction has 7467 states and 10666 transitions. [2022-11-03 02:11:39,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:11:39,694 INFO L276 IsEmpty]: Start isEmpty. Operand 7467 states and 10666 transitions. [2022-11-03 02:11:39,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 02:11:39,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:39,697 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:11:39,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:11:39,697 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:11:39,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:39,698 INFO L85 PathProgramCache]: Analyzing trace with hash -335053181, now seen corresponding path program 1 times [2022-11-03 02:11:39,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:39,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775610109] [2022-11-03 02:11:39,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:39,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-03 02:11:40,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:40,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775610109] [2022-11-03 02:11:40,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775610109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:40,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:40,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:11:40,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867782726] [2022-11-03 02:11:40,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:40,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:11:40,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:40,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:11:40,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:11:40,369 INFO L87 Difference]: Start difference. First operand 7467 states and 10666 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:11:46,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:47,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:49,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:52,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:54,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:56,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:56,056 INFO L93 Difference]: Finished difference Result 17148 states and 24353 transitions. [2022-11-03 02:11:56,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:11:56,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2022-11-03 02:11:56,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:56,124 INFO L225 Difference]: With dead ends: 17148 [2022-11-03 02:11:56,125 INFO L226 Difference]: Without dead ends: 9700 [2022-11-03 02:11:56,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:11:56,164 INFO L413 NwaCegarLoop]: 2028 mSDtfsCounter, 4437 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 1575 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4552 SdHoareTripleChecker+Valid, 4199 SdHoareTripleChecker+Invalid, 3761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1575 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:56,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4552 Valid, 4199 Invalid, 3761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1575 Valid, 2184 Invalid, 2 Unknown, 0 Unchecked, 14.9s Time] [2022-11-03 02:11:56,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9700 states. [2022-11-03 02:11:56,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9700 to 9628. [2022-11-03 02:11:56,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9628 states, 5696 states have (on average 1.285814606741573) internal successors, (7324), 5892 states have internal predecessors, (7324), 3092 states have call successors, (3092), 856 states have call predecessors, (3092), 837 states have return successors, (3111), 2999 states have call predecessors, (3111), 3088 states have call successors, (3111) [2022-11-03 02:11:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9628 states to 9628 states and 13527 transitions. [2022-11-03 02:11:56,956 INFO L78 Accepts]: Start accepts. Automaton has 9628 states and 13527 transitions. Word has length 117 [2022-11-03 02:11:56,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:56,957 INFO L495 AbstractCegarLoop]: Abstraction has 9628 states and 13527 transitions. [2022-11-03 02:11:56,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:11:56,957 INFO L276 IsEmpty]: Start isEmpty. Operand 9628 states and 13527 transitions. [2022-11-03 02:11:56,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 02:11:56,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:56,959 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:11:56,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:11:56,960 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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)] === [2022-11-03 02:11:56,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:56,961 INFO L85 PathProgramCache]: Analyzing trace with hash -256087408, now seen corresponding path program 1 times [2022-11-03 02:11:56,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:56,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201483240] [2022-11-03 02:11:56,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:56,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-03 02:11:57,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:57,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201483240] [2022-11-03 02:11:57,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201483240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:57,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:57,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:11:57,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634458105] [2022-11-03 02:11:57,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:57,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:57,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:57,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:57,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:57,189 INFO L87 Difference]: Start difference. First operand 9628 states and 13527 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:12:00,054 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 [] [2022-11-03 02:12:02,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:12:02,495 INFO L93 Difference]: Finished difference Result 25152 states and 35263 transitions. [2022-11-03 02:12:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:12:02,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2022-11-03 02:12:02,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:12:02,599 INFO L225 Difference]: With dead ends: 25152 [2022-11-03 02:12:02,599 INFO L226 Difference]: Without dead ends: 15543 [2022-11-03 02:12:02,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:12:02,645 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 1371 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:12:02,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1371 Valid, 2990 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 536 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-03 02:12:02,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15543 states. [2022-11-03 02:12:03,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15543 to 15511. [2022-11-03 02:12:03,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15511 states, 9155 states have (on average 1.2723102129983614) internal successors, (11648), 9503 states have internal predecessors, (11648), 4980 states have call successors, (4980), 1410 states have call predecessors, (4980), 1373 states have return successors, (5025), 4790 states have call predecessors, (5025), 4976 states have call successors, (5025) [2022-11-03 02:12:03,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15511 states to 15511 states and 21653 transitions. [2022-11-03 02:12:03,703 INFO L78 Accepts]: Start accepts. Automaton has 15511 states and 21653 transitions. Word has length 117 [2022-11-03 02:12:03,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:12:03,705 INFO L495 AbstractCegarLoop]: Abstraction has 15511 states and 21653 transitions. [2022-11-03 02:12:03,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:12:03,705 INFO L276 IsEmpty]: Start isEmpty. Operand 15511 states and 21653 transitions. [2022-11-03 02:12:03,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-03 02:12:03,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:12:03,712 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 9, 9, 9, 9, 9, 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] [2022-11-03 02:12:03,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:12:03,712 INFO L420 AbstractCegarLoop]: === Iteration 6 === 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)] === [2022-11-03 02:12:03,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:12:03,713 INFO L85 PathProgramCache]: Analyzing trace with hash -461124589, now seen corresponding path program 1 times [2022-11-03 02:12:03,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:12:03,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015781568] [2022-11-03 02:12:03,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:12:03,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:12:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:12:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-11-03 02:12:04,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:12:04,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015781568] [2022-11-03 02:12:04,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015781568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:12:04,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:12:04,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:12:04,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553442197] [2022-11-03 02:12:04,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:12:04,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:12:04,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:12:04,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:12:04,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:12:04,040 INFO L87 Difference]: Start difference. First operand 15511 states and 21653 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 02:12:07,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:09,372 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 [] [2022-11-03 02:12:11,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:12:11,940 INFO L93 Difference]: Finished difference Result 45717 states and 63877 transitions. [2022-11-03 02:12:11,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:12:11,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 134 [2022-11-03 02:12:11,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:12:12,117 INFO L225 Difference]: With dead ends: 45717 [2022-11-03 02:12:12,118 INFO L226 Difference]: Without dead ends: 30225 [2022-11-03 02:12:12,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:12:12,192 INFO L413 NwaCegarLoop]: 1888 mSDtfsCounter, 1549 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 3227 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:12:12,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 3227 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 533 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-11-03 02:12:12,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30225 states. [2022-11-03 02:12:14,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30225 to 30151. [2022-11-03 02:12:14,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30151 states, 17767 states have (on average 1.2725277199302076) internal successors, (22609), 18491 states have internal predecessors, (22609), 9708 states have call successors, (9708), 2746 states have call predecessors, (9708), 2673 states have return successors, (9802), 9295 states have call predecessors, (9802), 9704 states have call successors, (9802) [2022-11-03 02:12:14,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30151 states to 30151 states and 42119 transitions. [2022-11-03 02:12:14,409 INFO L78 Accepts]: Start accepts. Automaton has 30151 states and 42119 transitions. Word has length 134 [2022-11-03 02:12:14,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:12:14,410 INFO L495 AbstractCegarLoop]: Abstraction has 30151 states and 42119 transitions. [2022-11-03 02:12:14,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 02:12:14,411 INFO L276 IsEmpty]: Start isEmpty. Operand 30151 states and 42119 transitions. [2022-11-03 02:12:14,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-03 02:12:14,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:12:14,414 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 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] [2022-11-03 02:12:14,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:12:14,414 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)] === [2022-11-03 02:12:14,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:12:14,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2059422944, now seen corresponding path program 1 times [2022-11-03 02:12:14,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:12:14,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128859057] [2022-11-03 02:12:14,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:12:14,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:12:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:12:15,097 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-03 02:12:15,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:12:15,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128859057] [2022-11-03 02:12:15,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128859057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:12:15,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:12:15,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:12:15,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450472004] [2022-11-03 02:12:15,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:12:15,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:12:15,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:12:15,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:12:15,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:12:15,100 INFO L87 Difference]: Start difference. First operand 30151 states and 42119 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2022-11-03 02:12:18,376 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 [] [2022-11-03 02:12:24,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:12:24,902 INFO L93 Difference]: Finished difference Result 60231 states and 84145 transitions. [2022-11-03 02:12:24,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:12:24,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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 153 [2022-11-03 02:12:24,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:12:25,413 INFO L225 Difference]: With dead ends: 60231 [2022-11-03 02:12:25,414 INFO L226 Difference]: Without dead ends: 60229 [2022-11-03 02:12:25,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:12:25,442 INFO L413 NwaCegarLoop]: 1809 mSDtfsCounter, 1542 mSDsluCounter, 5774 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 6728 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:12:25,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 6728 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1179 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-03 02:12:25,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60229 states. [2022-11-03 02:12:28,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60229 to 60223. [2022-11-03 02:12:29,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60223 states, 35473 states have (on average 1.272855411157782) internal successors, (45152), 36919 states have internal predecessors, (45152), 19400 states have call successors, (19400), 5493 states have call predecessors, (19400), 5347 states have return successors, (19588), 18574 states have call predecessors, (19588), 19392 states have call successors, (19588) [2022-11-03 02:12:29,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60223 states to 60223 states and 84140 transitions. [2022-11-03 02:12:29,301 INFO L78 Accepts]: Start accepts. Automaton has 60223 states and 84140 transitions. Word has length 153 [2022-11-03 02:12:29,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:12:29,301 INFO L495 AbstractCegarLoop]: Abstraction has 60223 states and 84140 transitions. [2022-11-03 02:12:29,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2022-11-03 02:12:29,302 INFO L276 IsEmpty]: Start isEmpty. Operand 60223 states and 84140 transitions. [2022-11-03 02:12:29,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-03 02:12:29,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:12:29,305 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 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] [2022-11-03 02:12:29,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:12:29,305 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)] === [2022-11-03 02:12:29,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:12:29,306 INFO L85 PathProgramCache]: Analyzing trace with hash -702875995, now seen corresponding path program 1 times [2022-11-03 02:12:29,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:12:29,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670919595] [2022-11-03 02:12:29,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:12:29,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:12:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:12:30,151 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2022-11-03 02:12:30,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:12:30,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670919595] [2022-11-03 02:12:30,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670919595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:12:30,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:12:30,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:12:30,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622458479] [2022-11-03 02:12:30,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:12:30,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:12:30,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:12:30,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:12:30,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:12:30,155 INFO L87 Difference]: Start difference. First operand 60223 states and 84140 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:12:32,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:34,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:36,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:39,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:12:39,277 INFO L93 Difference]: Finished difference Result 60233 states and 84149 transitions. [2022-11-03 02:12:39,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:12:39,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 161 [2022-11-03 02:12:39,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:12:39,683 INFO L225 Difference]: With dead ends: 60233 [2022-11-03 02:12:39,683 INFO L226 Difference]: Without dead ends: 60231 [2022-11-03 02:12:39,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:12:39,719 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 1539 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:12:39,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 4003 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 775 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 02:12:39,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60231 states. [2022-11-03 02:12:43,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60231 to 60231. [2022-11-03 02:12:43,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60231 states, 35479 states have (on average 1.2728092674539868) internal successors, (45158), 36925 states have internal predecessors, (45158), 19400 states have call successors, (19400), 5495 states have call predecessors, (19400), 5349 states have return successors, (19588), 18574 states have call predecessors, (19588), 19392 states have call successors, (19588) [2022-11-03 02:12:43,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60231 states to 60231 states and 84146 transitions. [2022-11-03 02:12:43,446 INFO L78 Accepts]: Start accepts. Automaton has 60231 states and 84146 transitions. Word has length 161 [2022-11-03 02:12:43,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:12:43,447 INFO L495 AbstractCegarLoop]: Abstraction has 60231 states and 84146 transitions. [2022-11-03 02:12:43,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:12:43,448 INFO L276 IsEmpty]: Start isEmpty. Operand 60231 states and 84146 transitions. [2022-11-03 02:12:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-03 02:12:43,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:12:43,453 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 3, 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] [2022-11-03 02:12:43,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:12:43,454 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)] === [2022-11-03 02:12:43,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:12:43,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1535553920, now seen corresponding path program 1 times [2022-11-03 02:12:43,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:12:43,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565473752] [2022-11-03 02:12:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:12:43,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:12:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:12:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2022-11-03 02:12:44,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:12:44,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565473752] [2022-11-03 02:12:44,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565473752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:12:44,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:12:44,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:12:44,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141814528] [2022-11-03 02:12:44,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:12:44,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:12:44,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:12:44,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:12:44,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:12:44,179 INFO L87 Difference]: Start difference. First operand 60231 states and 84146 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:12:48,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:50,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:54,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:12:54,237 INFO L93 Difference]: Finished difference Result 60241 states and 84155 transitions. [2022-11-03 02:12:54,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:12:54,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 163 [2022-11-03 02:12:54,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:12:54,526 INFO L225 Difference]: With dead ends: 60241 [2022-11-03 02:12:54,526 INFO L226 Difference]: Without dead ends: 60239 [2022-11-03 02:12:54,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:12:54,559 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 1540 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:12:54,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 4003 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 775 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-03 02:12:54,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60239 states. [2022-11-03 02:12:58,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60239 to 60239. [2022-11-03 02:12:58,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60239 states, 35485 states have (on average 1.2727631393546568) internal successors, (45164), 36931 states have internal predecessors, (45164), 19400 states have call successors, (19400), 5497 states have call predecessors, (19400), 5351 states have return successors, (19588), 18574 states have call predecessors, (19588), 19392 states have call successors, (19588) [2022-11-03 02:12:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60239 states to 60239 states and 84152 transitions. [2022-11-03 02:12:58,391 INFO L78 Accepts]: Start accepts. Automaton has 60239 states and 84152 transitions. Word has length 163 [2022-11-03 02:12:58,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:12:58,392 INFO L495 AbstractCegarLoop]: Abstraction has 60239 states and 84152 transitions. [2022-11-03 02:12:58,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:12:58,393 INFO L276 IsEmpty]: Start isEmpty. Operand 60239 states and 84152 transitions. [2022-11-03 02:12:58,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-03 02:12:58,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:12:58,398 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:12:58,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:12:58,398 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)] === [2022-11-03 02:12:58,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:12:58,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1838711045, now seen corresponding path program 1 times [2022-11-03 02:12:58,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:12:58,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180848526] [2022-11-03 02:12:58,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:12:58,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:12:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:12:58,801 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2022-11-03 02:12:58,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:12:58,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180848526] [2022-11-03 02:12:58,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180848526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:12:58,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:12:58,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:12:58,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171366797] [2022-11-03 02:12:58,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:12:58,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:12:58,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:12:58,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:12:58,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:12:58,804 INFO L87 Difference]: Start difference. First operand 60239 states and 84152 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:13:02,198 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 [] [2022-11-03 02:13:09,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:09,642 INFO L93 Difference]: Finished difference Result 60251 states and 84160 transitions. [2022-11-03 02:13:09,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:13:09,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 171 [2022-11-03 02:13:09,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:09,945 INFO L225 Difference]: With dead ends: 60251 [2022-11-03 02:13:09,945 INFO L226 Difference]: Without dead ends: 60249 [2022-11-03 02:13:09,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:13:09,979 INFO L413 NwaCegarLoop]: 1812 mSDtfsCounter, 1536 mSDsluCounter, 5774 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 6731 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:09,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 6731 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1179 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-11-03 02:13:10,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60249 states. [2022-11-03 02:13:13,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60249 to 60243. [2022-11-03 02:13:14,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60243 states, 35488 states have (on average 1.272740081154193) internal successors, (45167), 36934 states have internal predecessors, (45167), 19400 states have call successors, (19400), 5498 states have call predecessors, (19400), 5352 states have return successors, (19588), 18574 states have call predecessors, (19588), 19392 states have call successors, (19588) [2022-11-03 02:13:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60243 states to 60243 states and 84155 transitions. [2022-11-03 02:13:14,246 INFO L78 Accepts]: Start accepts. Automaton has 60243 states and 84155 transitions. Word has length 171 [2022-11-03 02:13:14,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:14,247 INFO L495 AbstractCegarLoop]: Abstraction has 60243 states and 84155 transitions. [2022-11-03 02:13:14,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:13:14,247 INFO L276 IsEmpty]: Start isEmpty. Operand 60243 states and 84155 transitions. [2022-11-03 02:13:14,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-03 02:13:14,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:14,251 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:13:14,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:13:14,252 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)] === [2022-11-03 02:13:14,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:14,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1765660048, now seen corresponding path program 1 times [2022-11-03 02:13:14,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:14,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293656643] [2022-11-03 02:13:14,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:14,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2022-11-03 02:13:14,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:14,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293656643] [2022-11-03 02:13:14,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293656643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:14,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:14,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:13:14,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462395900] [2022-11-03 02:13:14,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:14,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:13:14,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:14,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:13:14,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:13:14,679 INFO L87 Difference]: Start difference. First operand 60243 states and 84155 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:13:17,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:18,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:20,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:24,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:27,027 INFO L93 Difference]: Finished difference Result 60253 states and 84164 transitions. [2022-11-03 02:13:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:13:27,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 177 [2022-11-03 02:13:27,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:27,269 INFO L225 Difference]: With dead ends: 60253 [2022-11-03 02:13:27,270 INFO L226 Difference]: Without dead ends: 60251 [2022-11-03 02:13:27,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:13:27,293 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 1539 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:27,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 4003 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 775 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-11-03 02:13:27,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60251 states. [2022-11-03 02:13:31,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60251 to 60251. [2022-11-03 02:13:31,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60251 states, 35494 states have (on average 1.2726939764467233) internal successors, (45173), 36940 states have internal predecessors, (45173), 19400 states have call successors, (19400), 5500 states have call predecessors, (19400), 5354 states have return successors, (19588), 18574 states have call predecessors, (19588), 19392 states have call successors, (19588) [2022-11-03 02:13:31,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60251 states to 60251 states and 84161 transitions. [2022-11-03 02:13:31,587 INFO L78 Accepts]: Start accepts. Automaton has 60251 states and 84161 transitions. Word has length 177 [2022-11-03 02:13:31,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:31,588 INFO L495 AbstractCegarLoop]: Abstraction has 60251 states and 84161 transitions. [2022-11-03 02:13:31,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:13:31,589 INFO L276 IsEmpty]: Start isEmpty. Operand 60251 states and 84161 transitions. [2022-11-03 02:13:31,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-03 02:13:31,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:31,595 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 6, 5, 5, 4, 4, 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] [2022-11-03 02:13:31,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:13:31,595 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)] === [2022-11-03 02:13:31,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:31,596 INFO L85 PathProgramCache]: Analyzing trace with hash 840327643, now seen corresponding path program 1 times [2022-11-03 02:13:31,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:31,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054045837] [2022-11-03 02:13:31,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:31,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:32,035 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2022-11-03 02:13:32,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:32,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054045837] [2022-11-03 02:13:32,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054045837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:32,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:32,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:13:32,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419524111] [2022-11-03 02:13:32,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:32,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:13:32,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:32,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:13:32,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:13:32,039 INFO L87 Difference]: Start difference. First operand 60251 states and 84161 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:13:35,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:39,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:41,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []