./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-packetengines-hamachi.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/bin/utaipan-g80aRyZoba --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 141cc550f279b59aa80e553b6a405c5654c50ab0a30e94ad7616006c63d0c81e --- 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-b5237d8 [2022-11-22 02:17:56,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:17:56,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:17:56,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:17:56,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:17:56,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:17:56,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:17:56,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:17:56,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:17:56,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:17:56,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:17:56,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:17:56,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:17:56,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:17:56,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:17:56,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:17:56,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:17:56,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:17:56,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:17:56,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:17:56,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:17:56,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:17:56,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:17:56,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:17:56,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:17:56,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:17:56,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:17:56,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:17:56,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:17:56,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:17:56,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:17:56,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:17:56,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:17:56,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:17:56,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:17:56,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:17:56,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:17:56,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:17:56,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:17:56,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:17:56,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:17:56,581 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:17:56,608 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:17:56,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:17:56,609 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:17:56,610 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:17:56,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:17:56,611 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:17:56,611 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:17:56,611 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:17:56,612 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:17:56,612 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:17:56,612 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:17:56,612 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:17:56,613 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:17:56,613 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:17:56,613 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:17:56,614 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:17:56,614 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:17:56,614 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:17:56,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:17:56,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:17:56,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:17:56,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:17:56,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:17:56,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:17:56,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:17:56,617 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:17:56,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:17:56,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:17:56,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:17:56,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:17:56,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:17:56,618 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:17:56,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:17:56,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:17:56,619 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:17:56,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:17:56,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:17:56,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:17:56,620 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_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 141cc550f279b59aa80e553b6a405c5654c50ab0a30e94ad7616006c63d0c81e [2022-11-22 02:17:56,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:17:56,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:17:56,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:17:56,942 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:17:56,942 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:17:56,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i [2022-11-22 02:18:00,493 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:18:01,228 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:18:01,228 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i [2022-11-22 02:18:01,283 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/bin/utaipan-g80aRyZoba/data/e42300669/3035c8d4db98423eb0f40bf6da855d6f/FLAG410651d42 [2022-11-22 02:18:01,302 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/bin/utaipan-g80aRyZoba/data/e42300669/3035c8d4db98423eb0f40bf6da855d6f [2022-11-22 02:18:01,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:18:01,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:18:01,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:18:01,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:18:01,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:18:01,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:18:01" (1/1) ... [2022-11-22 02:18:01,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104edb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:01, skipping insertion in model container [2022-11-22 02:18:01,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:18:01" (1/1) ... [2022-11-22 02:18:01,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:18:01,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:18:04,613 WARN L237 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_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[322818,322831] [2022-11-22 02:18:04,618 WARN L237 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_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[322987,323000] [2022-11-22 02:18:04,619 WARN L237 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_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[323154,323167] [2022-11-22 02:18:04,619 WARN L237 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_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[323322,323335] [2022-11-22 02:18:04,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:18:04,728 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:18:05,212 WARN L237 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_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[322818,322831] [2022-11-22 02:18:05,213 WARN L237 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_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[322987,323000] [2022-11-22 02:18:05,214 WARN L237 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_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[323154,323167] [2022-11-22 02:18:05,215 WARN L237 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_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[323322,323335] [2022-11-22 02:18:05,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:18:05,504 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:18:05,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:05 WrapperNode [2022-11-22 02:18:05,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:18:05,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:18:05,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:18:05,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:18:05,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:05" (1/1) ... [2022-11-22 02:18:05,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:05" (1/1) ... [2022-11-22 02:18:05,868 INFO L138 Inliner]: procedures = 412, calls = 1858, calls flagged for inlining = 207, calls inlined = 191, statements flattened = 4675 [2022-11-22 02:18:05,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:18:05,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:18:05,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:18:05,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:18:05,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:05" (1/1) ... [2022-11-22 02:18:05,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:05" (1/1) ... [2022-11-22 02:18:05,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:05" (1/1) ... [2022-11-22 02:18:05,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:05" (1/1) ... [2022-11-22 02:18:06,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:05" (1/1) ... [2022-11-22 02:18:06,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:05" (1/1) ... [2022-11-22 02:18:06,055 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:05" (1/1) ... [2022-11-22 02:18:06,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:05" (1/1) ... [2022-11-22 02:18:06,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:18:06,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:18:06,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:18:06,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:18:06,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:05" (1/1) ... [2022-11-22 02:18:06,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:18:06,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:18:06,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:18:06,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:18:06,206 INFO L130 BoogieDeclarations]: Found specification of procedure check_if_running [2022-11-22 02:18:06,206 INFO L138 BoogieDeclarations]: Found implementation of procedure check_if_running [2022-11-22 02:18:06,206 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 02:18:06,206 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 02:18:06,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 02:18:06,207 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 02:18:06,207 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-22 02:18:06,207 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-22 02:18:06,207 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 02:18:06,207 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 02:18:06,207 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_close [2022-11-22 02:18:06,208 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_close [2022-11-22 02:18:06,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 02:18:06,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 02:18:06,208 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2022-11-22 02:18:06,208 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2022-11-22 02:18:06,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 02:18:06,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 02:18:06,209 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 02:18:06,209 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 02:18:06,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_hamachi_private [2022-11-22 02:18:06,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_hamachi_private [2022-11-22 02:18:06,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 02:18:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 02:18:06,211 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 02:18:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 02:18:06,211 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 02:18:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 02:18:06,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 02:18:06,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 02:18:06,212 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-22 02:18:06,212 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-22 02:18:06,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:18:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-22 02:18:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-22 02:18:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 02:18:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 02:18:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 02:18:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 02:18:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 02:18:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 02:18:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 02:18:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 02:18:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:18:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-22 02:18:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-22 02:18:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 02:18:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 02:18:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 02:18:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 02:18:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 02:18:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 02:18:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 02:18:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 02:18:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-11-22 02:18:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-11-22 02:18:06,217 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 02:18:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 02:18:06,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 02:18:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 02:18:06,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:18:06,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 02:18:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 02:18:06,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 02:18:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 02:18:06,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-22 02:18:06,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-22 02:18:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:18:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 02:18:06,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 02:18:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 02:18:06,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 02:18:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:18:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:18:06,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:18:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:18:06,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:18:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_hamachi_private [2022-11-22 02:18:06,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_hamachi_private [2022-11-22 02:18:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-22 02:18:06,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-22 02:18:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 02:18:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 02:18:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-22 02:18:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-22 02:18:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 02:18:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 02:18:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-22 02:18:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-22 02:18:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-22 02:18:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-22 02:18:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2022-11-22 02:18:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2022-11-22 02:18:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_nway_reset [2022-11-22 02:18:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_nway_reset [2022-11-22 02:18:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-22 02:18:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-22 02:18:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:18:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:18:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 02:18:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 02:18:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 02:18:06,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 02:18:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 02:18:06,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 02:18:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_hamachi_exit_15_2 [2022-11-22 02:18:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_hamachi_exit_15_2 [2022-11-22 02:18:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 02:18:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 02:18:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 02:18:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 02:18:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_open [2022-11-22 02:18:06,234 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_open [2022-11-22 02:18:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 02:18:06,241 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 02:18:06,241 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-22 02:18:06,241 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-22 02:18:06,241 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 02:18:06,241 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 02:18:06,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:18:06,242 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 02:18:06,242 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 02:18:06,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:18:06,242 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-22 02:18:06,242 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-22 02:18:06,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:18:06,242 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 02:18:06,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 02:18:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-22 02:18:06,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-22 02:18:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 02:18:06,243 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 02:18:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_68 [2022-11-22 02:18:06,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_68 [2022-11-22 02:18:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 02:18:06,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 02:18:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-22 02:18:06,244 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-22 02:18:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 02:18:06,244 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 02:18:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 02:18:06,244 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 02:18:06,245 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_remove_one [2022-11-22 02:18:06,245 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_remove_one [2022-11-22 02:18:06,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:18:06,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 02:18:06,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 02:18:06,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_69 [2022-11-22 02:18:06,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_69 [2022-11-22 02:18:06,245 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_get_stats [2022-11-22 02:18:06,246 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_get_stats [2022-11-22 02:18:06,246 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_tx_timeout [2022-11-22 02:18:06,246 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_tx_timeout [2022-11-22 02:18:06,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 02:18:06,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 02:18:06,246 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2022-11-22 02:18:06,246 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2022-11-22 02:18:06,246 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-22 02:18:06,247 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-22 02:18:06,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:18:06,247 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_timer [2022-11-22 02:18:06,247 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_timer [2022-11-22 02:18:06,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 02:18:06,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 02:18:06,247 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-22 02:18:06,248 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-22 02:18:07,219 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:18:07,226 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:18:07,499 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 02:18:11,371 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 02:18:11,501 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:18:13,207 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:18:13,207 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 02:18:13,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:18:13 BoogieIcfgContainer [2022-11-22 02:18:13,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:18:13,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:18:13,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:18:13,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:18:13,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:18:01" (1/3) ... [2022-11-22 02:18:13,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11018892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:18:13, skipping insertion in model container [2022-11-22 02:18:13,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:05" (2/3) ... [2022-11-22 02:18:13,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11018892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:18:13, skipping insertion in model container [2022-11-22 02:18:13,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:18:13" (3/3) ... [2022-11-22 02:18:13,234 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i [2022-11-22 02:18:13,326 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:18:13,326 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 02:18:13,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:18:13,469 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;@5083bb8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:18:13,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 02:18:13,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 1131 states, 657 states have (on average 1.3287671232876712) internal successors, (873), 684 states have internal predecessors, (873), 397 states have call successors, (397), 75 states have call predecessors, (397), 74 states have return successors, (390), 377 states have call predecessors, (390), 390 states have call successors, (390) [2022-11-22 02:18:13,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-22 02:18:13,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:13,524 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 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] [2022-11-22 02:18:13,525 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)] === [2022-11-22 02:18:13,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:13,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1207438580, now seen corresponding path program 1 times [2022-11-22 02:18:13,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:13,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959391979] [2022-11-22 02:18:13,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:13,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:14,455 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-11-22 02:18:14,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:14,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959391979] [2022-11-22 02:18:14,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959391979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:14,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:14,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:18:14,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911187997] [2022-11-22 02:18:14,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:14,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:18:14,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:14,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:18:14,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:18:14,529 INFO L87 Difference]: Start difference. First operand has 1131 states, 657 states have (on average 1.3287671232876712) internal successors, (873), 684 states have internal predecessors, (873), 397 states have call successors, (397), 75 states have call predecessors, (397), 74 states have return successors, (390), 377 states have call predecessors, (390), 390 states have call successors, (390) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-22 02:18:18,544 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 [] [2022-11-22 02:18:18,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:18,673 INFO L93 Difference]: Finished difference Result 3213 states and 4751 transitions. [2022-11-22 02:18:18,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:18:18,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2022-11-22 02:18:18,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:18,735 INFO L225 Difference]: With dead ends: 3213 [2022-11-22 02:18:18,735 INFO L226 Difference]: Without dead ends: 2090 [2022-11-22 02:18:18,750 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 [2022-11-22 02:18:18,755 INFO L413 NwaCegarLoop]: 1734 mSDtfsCounter, 1439 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:18,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 3105 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 508 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-22 02:18:18,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2022-11-22 02:18:19,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 2085. [2022-11-22 02:18:19,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 1228 states have (on average 1.3200325732899023) internal successors, (1621), 1280 states have internal predecessors, (1621), 711 states have call successors, (711), 144 states have call predecessors, (711), 143 states have return successors, (707), 681 states have call predecessors, (707), 707 states have call successors, (707) [2022-11-22 02:18:19,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3039 transitions. [2022-11-22 02:18:19,162 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3039 transitions. Word has length 115 [2022-11-22 02:18:19,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:19,163 INFO L495 AbstractCegarLoop]: Abstraction has 2085 states and 3039 transitions. [2022-11-22 02:18:19,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-22 02:18:19,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3039 transitions. [2022-11-22 02:18:19,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-22 02:18:19,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:19,171 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] [2022-11-22 02:18:19,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:18:19,172 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)] === [2022-11-22 02:18:19,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:19,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1475219602, now seen corresponding path program 1 times [2022-11-22 02:18:19,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:19,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956177373] [2022-11-22 02:18:19,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:19,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:19,610 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-22 02:18:19,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:19,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956177373] [2022-11-22 02:18:19,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956177373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:19,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:19,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:18:19,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171190427] [2022-11-22 02:18:19,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:19,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:18:19,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:19,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:18:19,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:18:19,614 INFO L87 Difference]: Start difference. First operand 2085 states and 3039 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) [2022-11-22 02:18:23,483 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 [] [2022-11-22 02:18:23,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:23,597 INFO L93 Difference]: Finished difference Result 5802 states and 8445 transitions. [2022-11-22 02:18:23,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:18:23,599 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 [2022-11-22 02:18:23,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:23,631 INFO L225 Difference]: With dead ends: 5802 [2022-11-22 02:18:23,631 INFO L226 Difference]: Without dead ends: 3736 [2022-11-22 02:18:23,642 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 [2022-11-22 02:18:23,643 INFO L413 NwaCegarLoop]: 1748 mSDtfsCounter, 1277 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:23,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 3095 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 490 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-11-22 02:18:23,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2022-11-22 02:18:23,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3706. [2022-11-22 02:18:23,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 2177 states have (on average 1.3201653651814425) internal successors, (2874), 2274 states have internal predecessors, (2874), 1252 states have call successors, (1252), 277 states have call predecessors, (1252), 274 states have return successors, (1264), 1189 states have call predecessors, (1264), 1248 states have call successors, (1264) [2022-11-22 02:18:24,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 5390 transitions. [2022-11-22 02:18:24,005 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 5390 transitions. Word has length 113 [2022-11-22 02:18:24,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:24,006 INFO L495 AbstractCegarLoop]: Abstraction has 3706 states and 5390 transitions. [2022-11-22 02:18:24,006 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) [2022-11-22 02:18:24,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 5390 transitions. [2022-11-22 02:18:24,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-22 02:18:24,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:24,013 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] [2022-11-22 02:18:24,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:18:24,013 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)] === [2022-11-22 02:18:24,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:24,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1761583995, now seen corresponding path program 1 times [2022-11-22 02:18:24,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:24,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557373117] [2022-11-22 02:18:24,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:24,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-22 02:18:24,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:24,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557373117] [2022-11-22 02:18:24,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557373117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:24,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:24,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:18:24,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300442666] [2022-11-22 02:18:24,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:24,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:18:24,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:24,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:18:24,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:18:24,356 INFO L87 Difference]: Start difference. First operand 3706 states and 5390 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) [2022-11-22 02:18:27,299 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 [] [2022-11-22 02:18:28,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:28,277 INFO L93 Difference]: Finished difference Result 8656 states and 12545 transitions. [2022-11-22 02:18:28,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:18:28,278 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 [2022-11-22 02:18:28,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:28,315 INFO L225 Difference]: With dead ends: 8656 [2022-11-22 02:18:28,315 INFO L226 Difference]: Without dead ends: 4969 [2022-11-22 02:18:28,332 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 [2022-11-22 02:18:28,337 INFO L413 NwaCegarLoop]: 1705 mSDtfsCounter, 1284 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:28,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 3058 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 515 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-11-22 02:18:28,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4969 states. [2022-11-22 02:18:28,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4969 to 4942. [2022-11-22 02:18:28,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4942 states, 2868 states have (on average 1.3057880055788005) internal successors, (3745), 3007 states have internal predecessors, (3745), 1680 states have call successors, (1680), 395 states have call predecessors, (1680), 391 states have return successors, (1703), 1586 states have call predecessors, (1703), 1676 states have call successors, (1703) [2022-11-22 02:18:28,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4942 states to 4942 states and 7128 transitions. [2022-11-22 02:18:28,708 INFO L78 Accepts]: Start accepts. Automaton has 4942 states and 7128 transitions. Word has length 117 [2022-11-22 02:18:28,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:28,710 INFO L495 AbstractCegarLoop]: Abstraction has 4942 states and 7128 transitions. [2022-11-22 02:18:28,710 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) [2022-11-22 02:18:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 4942 states and 7128 transitions. [2022-11-22 02:18:28,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-22 02:18:28,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:28,717 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] [2022-11-22 02:18:28,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:18:28,718 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:18:28,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:28,719 INFO L85 PathProgramCache]: Analyzing trace with hash -503401245, now seen corresponding path program 1 times [2022-11-22 02:18:28,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:28,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067105450] [2022-11-22 02:18:28,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:28,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:29,441 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2022-11-22 02:18:29,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:29,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067105450] [2022-11-22 02:18:29,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067105450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:29,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:29,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:18:29,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853497057] [2022-11-22 02:18:29,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:29,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:18:29,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:29,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:18:29,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:18:29,446 INFO L87 Difference]: Start difference. First operand 4942 states and 7128 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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) [2022-11-22 02:18:32,864 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 [] [2022-11-22 02:18:34,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:34,091 INFO L93 Difference]: Finished difference Result 6541 states and 9406 transitions. [2022-11-22 02:18:34,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:18:34,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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 159 [2022-11-22 02:18:34,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:34,136 INFO L225 Difference]: With dead ends: 6541 [2022-11-22 02:18:34,137 INFO L226 Difference]: Without dead ends: 6539 [2022-11-22 02:18:34,141 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 [2022-11-22 02:18:34,142 INFO L413 NwaCegarLoop]: 1696 mSDtfsCounter, 1270 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 6438 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:34,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 6438 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-22 02:18:34,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2022-11-22 02:18:34,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 6532. [2022-11-22 02:18:34,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6532 states, 3776 states have (on average 1.30323093220339) internal successors, (4921), 3961 states have internal predecessors, (4921), 2226 states have call successors, (2226), 533 states have call predecessors, (2226), 527 states have return successors, (2253), 2099 states have call predecessors, (2253), 2218 states have call successors, (2253) [2022-11-22 02:18:34,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6532 states to 6532 states and 9400 transitions. [2022-11-22 02:18:34,593 INFO L78 Accepts]: Start accepts. Automaton has 6532 states and 9400 transitions. Word has length 159 [2022-11-22 02:18:34,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:34,595 INFO L495 AbstractCegarLoop]: Abstraction has 6532 states and 9400 transitions. [2022-11-22 02:18:34,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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) [2022-11-22 02:18:34,596 INFO L276 IsEmpty]: Start isEmpty. Operand 6532 states and 9400 transitions. [2022-11-22 02:18:34,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-22 02:18:34,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:34,609 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, 1, 1] [2022-11-22 02:18:34,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:18:34,609 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:18:34,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:34,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1073996928, now seen corresponding path program 1 times [2022-11-22 02:18:34,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:34,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326572028] [2022-11-22 02:18:34,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:34,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2022-11-22 02:18:35,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:35,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326572028] [2022-11-22 02:18:35,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326572028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:35,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:35,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:18:35,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58104060] [2022-11-22 02:18:35,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:35,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:18:35,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:35,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:18:35,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:18:35,287 INFO L87 Difference]: Start difference. First operand 6532 states and 9400 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-22 02:18:38,938 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 [] [2022-11-22 02:18:40,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:40,087 INFO L93 Difference]: Finished difference Result 6545 states and 9409 transitions. [2022-11-22 02:18:40,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:18:40,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 163 [2022-11-22 02:18:40,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:40,131 INFO L225 Difference]: With dead ends: 6545 [2022-11-22 02:18:40,131 INFO L226 Difference]: Without dead ends: 6543 [2022-11-22 02:18:40,138 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 [2022-11-22 02:18:40,139 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1265 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:40,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-11-22 02:18:40,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6543 states. [2022-11-22 02:18:40,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6543 to 6536. [2022-11-22 02:18:40,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6536 states, 3779 states have (on average 1.3029902090500132) internal successors, (4924), 3964 states have internal predecessors, (4924), 2226 states have call successors, (2226), 534 states have call predecessors, (2226), 528 states have return successors, (2253), 2099 states have call predecessors, (2253), 2218 states have call successors, (2253) [2022-11-22 02:18:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6536 states to 6536 states and 9403 transitions. [2022-11-22 02:18:40,674 INFO L78 Accepts]: Start accepts. Automaton has 6536 states and 9403 transitions. Word has length 163 [2022-11-22 02:18:40,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:40,675 INFO L495 AbstractCegarLoop]: Abstraction has 6536 states and 9403 transitions. [2022-11-22 02:18:40,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-22 02:18:40,676 INFO L276 IsEmpty]: Start isEmpty. Operand 6536 states and 9403 transitions. [2022-11-22 02:18:40,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-22 02:18:40,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:40,685 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, 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] [2022-11-22 02:18:40,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:18:40,685 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:18:40,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:40,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1852786671, now seen corresponding path program 1 times [2022-11-22 02:18:40,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:40,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612200154] [2022-11-22 02:18:40,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:40,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2022-11-22 02:18:41,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:41,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612200154] [2022-11-22 02:18:41,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612200154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:41,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:41,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:18:41,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35257729] [2022-11-22 02:18:41,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:41,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:18:41,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:41,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:18:41,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:18:41,366 INFO L87 Difference]: Start difference. First operand 6536 states and 9403 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, (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) [2022-11-22 02:18:45,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:18:47,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:18:47,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:47,769 INFO L93 Difference]: Finished difference Result 6546 states and 9412 transitions. [2022-11-22 02:18:47,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:18:47,770 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, (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 167 [2022-11-22 02:18:47,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:47,813 INFO L225 Difference]: With dead ends: 6546 [2022-11-22 02:18:47,813 INFO L226 Difference]: Without dead ends: 6544 [2022-11-22 02:18:47,818 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 [2022-11-22 02:18:47,819 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 1578 mSDsluCounter, 2759 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 4148 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:47,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 4148 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 746 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2022-11-22 02:18:47,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6544 states. [2022-11-22 02:18:48,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6544 to 6544. [2022-11-22 02:18:48,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6544 states, 3785 states have (on average 1.3025099075297226) internal successors, (4930), 3970 states have internal predecessors, (4930), 2226 states have call successors, (2226), 536 states have call predecessors, (2226), 530 states have return successors, (2253), 2099 states have call predecessors, (2253), 2218 states have call successors, (2253) [2022-11-22 02:18:48,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6544 states to 6544 states and 9409 transitions. [2022-11-22 02:18:48,390 INFO L78 Accepts]: Start accepts. Automaton has 6544 states and 9409 transitions. Word has length 167 [2022-11-22 02:18:48,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:48,390 INFO L495 AbstractCegarLoop]: Abstraction has 6544 states and 9409 transitions. [2022-11-22 02:18:48,391 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, (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) [2022-11-22 02:18:48,391 INFO L276 IsEmpty]: Start isEmpty. Operand 6544 states and 9409 transitions. [2022-11-22 02:18:48,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-22 02:18:48,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:48,398 INFO L195 NwaCegarLoop]: trace histogram [12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:48,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:18:48,398 INFO L420 AbstractCegarLoop]: === Iteration 7 === 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)] === [2022-11-22 02:18:48,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:48,399 INFO L85 PathProgramCache]: Analyzing trace with hash 525433568, now seen corresponding path program 1 times [2022-11-22 02:18:48,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:48,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465205460] [2022-11-22 02:18:48,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:48,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2022-11-22 02:18:48,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:48,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465205460] [2022-11-22 02:18:48,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465205460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:48,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:48,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:18:48,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798374000] [2022-11-22 02:18:48,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:48,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:18:48,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:48,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:18:48,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:18:48,758 INFO L87 Difference]: Start difference. First operand 6544 states and 9409 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 02:18:52,213 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 [] [2022-11-22 02:18:52,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:52,872 INFO L93 Difference]: Finished difference Result 14274 states and 20509 transitions. [2022-11-22 02:18:52,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:18:52,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 164 [2022-11-22 02:18:52,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:52,907 INFO L225 Difference]: With dead ends: 14274 [2022-11-22 02:18:52,907 INFO L226 Difference]: Without dead ends: 7767 [2022-11-22 02:18:52,928 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 [2022-11-22 02:18:52,929 INFO L413 NwaCegarLoop]: 2008 mSDtfsCounter, 972 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 3360 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:52,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 3360 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 658 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-11-22 02:18:52,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7767 states. [2022-11-22 02:18:53,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7767 to 7699. [2022-11-22 02:18:53,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7699 states, 4594 states have (on average 1.3012625163256422) internal successors, (5978), 4791 states have internal predecessors, (5978), 2481 states have call successors, (2481), 632 states have call predecessors, (2481), 621 states have return successors, (2500), 2336 states have call predecessors, (2500), 2473 states have call successors, (2500) [2022-11-22 02:18:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7699 states to 7699 states and 10959 transitions. [2022-11-22 02:18:53,446 INFO L78 Accepts]: Start accepts. Automaton has 7699 states and 10959 transitions. Word has length 164 [2022-11-22 02:18:53,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:53,449 INFO L495 AbstractCegarLoop]: Abstraction has 7699 states and 10959 transitions. [2022-11-22 02:18:53,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 02:18:53,449 INFO L276 IsEmpty]: Start isEmpty. Operand 7699 states and 10959 transitions. [2022-11-22 02:18:53,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-22 02:18:53,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:53,454 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:53,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:18:53,455 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)] === [2022-11-22 02:18:53,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:53,455 INFO L85 PathProgramCache]: Analyzing trace with hash -47304426, now seen corresponding path program 1 times [2022-11-22 02:18:53,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:53,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142557788] [2022-11-22 02:18:53,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:53,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:54,033 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2022-11-22 02:18:54,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:54,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142557788] [2022-11-22 02:18:54,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142557788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:54,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:54,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:18:54,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22171859] [2022-11-22 02:18:54,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:54,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:18:54,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:54,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:18:54,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:18:54,036 INFO L87 Difference]: Start difference. First operand 7699 states and 10959 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-22 02:18:57,623 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 [] [2022-11-22 02:18:58,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:58,736 INFO L93 Difference]: Finished difference Result 7712 states and 10968 transitions. [2022-11-22 02:18:58,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:18:58,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 174 [2022-11-22 02:18:58,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:58,774 INFO L225 Difference]: With dead ends: 7712 [2022-11-22 02:18:58,774 INFO L226 Difference]: Without dead ends: 7710 [2022-11-22 02:18:58,780 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 [2022-11-22 02:18:58,780 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1265 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:58,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-22 02:18:58,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7710 states. [2022-11-22 02:18:59,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7710 to 7703. [2022-11-22 02:18:59,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7703 states, 4597 states have (on average 1.3010659125516641) internal successors, (5981), 4794 states have internal predecessors, (5981), 2481 states have call successors, (2481), 633 states have call predecessors, (2481), 622 states have return successors, (2500), 2336 states have call predecessors, (2500), 2473 states have call successors, (2500) [2022-11-22 02:18:59,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7703 states to 7703 states and 10962 transitions. [2022-11-22 02:18:59,384 INFO L78 Accepts]: Start accepts. Automaton has 7703 states and 10962 transitions. Word has length 174 [2022-11-22 02:18:59,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:59,385 INFO L495 AbstractCegarLoop]: Abstraction has 7703 states and 10962 transitions. [2022-11-22 02:18:59,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-22 02:18:59,386 INFO L276 IsEmpty]: Start isEmpty. Operand 7703 states and 10962 transitions. [2022-11-22 02:18:59,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-22 02:18:59,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:59,391 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:59,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:18:59,392 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)] === [2022-11-22 02:18:59,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:59,393 INFO L85 PathProgramCache]: Analyzing trace with hash -798593905, now seen corresponding path program 1 times [2022-11-22 02:18:59,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:59,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076840395] [2022-11-22 02:18:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:59,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:00,015 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2022-11-22 02:19:00,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:00,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076840395] [2022-11-22 02:19:00,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076840395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:00,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:00,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:19:00,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623508245] [2022-11-22 02:19:00,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:00,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:19:00,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:00,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:19:00,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:19:00,018 INFO L87 Difference]: Start difference. First operand 7703 states and 10962 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:19:03,305 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 [] [2022-11-22 02:19:04,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:04,429 INFO L93 Difference]: Finished difference Result 7716 states and 10971 transitions. [2022-11-22 02:19:04,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:19:04,431 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 177 [2022-11-22 02:19:04,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:04,467 INFO L225 Difference]: With dead ends: 7716 [2022-11-22 02:19:04,467 INFO L226 Difference]: Without dead ends: 7714 [2022-11-22 02:19:04,473 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 [2022-11-22 02:19:04,476 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1266 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:04,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-11-22 02:19:04,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7714 states. [2022-11-22 02:19:04,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7714 to 7707. [2022-11-22 02:19:05,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7707 states, 4600 states have (on average 1.3008695652173914) internal successors, (5984), 4797 states have internal predecessors, (5984), 2481 states have call successors, (2481), 634 states have call predecessors, (2481), 623 states have return successors, (2500), 2336 states have call predecessors, (2500), 2473 states have call successors, (2500) [2022-11-22 02:19:05,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7707 states to 7707 states and 10965 transitions. [2022-11-22 02:19:05,034 INFO L78 Accepts]: Start accepts. Automaton has 7707 states and 10965 transitions. Word has length 177 [2022-11-22 02:19:05,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:05,035 INFO L495 AbstractCegarLoop]: Abstraction has 7707 states and 10965 transitions. [2022-11-22 02:19:05,035 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:19:05,035 INFO L276 IsEmpty]: Start isEmpty. Operand 7707 states and 10965 transitions. [2022-11-22 02:19:05,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-22 02:19:05,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:05,042 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:05,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:19:05,043 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)] === [2022-11-22 02:19:05,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:05,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1885743350, now seen corresponding path program 1 times [2022-11-22 02:19:05,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:05,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586616446] [2022-11-22 02:19:05,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:05,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2022-11-22 02:19:05,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:05,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586616446] [2022-11-22 02:19:05,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586616446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:05,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:05,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:19:05,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335261946] [2022-11-22 02:19:05,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:05,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:19:05,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:05,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:19:05,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:19:05,531 INFO L87 Difference]: Start difference. First operand 7707 states and 10965 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 02:19:08,880 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 [] [2022-11-22 02:19:09,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:09,883 INFO L93 Difference]: Finished difference Result 7720 states and 10974 transitions. [2022-11-22 02:19:09,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:19:09,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 184 [2022-11-22 02:19:09,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:09,916 INFO L225 Difference]: With dead ends: 7720 [2022-11-22 02:19:09,917 INFO L226 Difference]: Without dead ends: 7718 [2022-11-22 02:19:09,920 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 [2022-11-22 02:19:09,921 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1265 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:09,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-22 02:19:09,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7718 states. [2022-11-22 02:19:10,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7718 to 7711. [2022-11-22 02:19:10,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7711 states, 4603 states have (on average 1.3006734738214207) internal successors, (5987), 4800 states have internal predecessors, (5987), 2481 states have call successors, (2481), 635 states have call predecessors, (2481), 624 states have return successors, (2500), 2336 states have call predecessors, (2500), 2473 states have call successors, (2500) [2022-11-22 02:19:10,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7711 states to 7711 states and 10968 transitions. [2022-11-22 02:19:10,431 INFO L78 Accepts]: Start accepts. Automaton has 7711 states and 10968 transitions. Word has length 184 [2022-11-22 02:19:10,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:10,433 INFO L495 AbstractCegarLoop]: Abstraction has 7711 states and 10968 transitions. [2022-11-22 02:19:10,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 02:19:10,433 INFO L276 IsEmpty]: Start isEmpty. Operand 7711 states and 10968 transitions. [2022-11-22 02:19:10,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-22 02:19:10,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:10,440 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:10,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:19:10,441 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)] === [2022-11-22 02:19:10,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:10,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1004406481, now seen corresponding path program 1 times [2022-11-22 02:19:10,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:10,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725536557] [2022-11-22 02:19:10,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:10,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:10,900 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2022-11-22 02:19:10,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:10,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725536557] [2022-11-22 02:19:10,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725536557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:10,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:10,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:19:10,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296691490] [2022-11-22 02:19:10,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:10,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:19:10,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:10,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:19:10,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:19:10,904 INFO L87 Difference]: Start difference. First operand 7711 states and 10968 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) [2022-11-22 02:19:14,444 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 [] [2022-11-22 02:19:15,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:15,683 INFO L93 Difference]: Finished difference Result 12272 states and 17455 transitions. [2022-11-22 02:19:15,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:19:15,684 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 187 [2022-11-22 02:19:15,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:15,744 INFO L225 Difference]: With dead ends: 12272 [2022-11-22 02:19:15,744 INFO L226 Difference]: Without dead ends: 12270 [2022-11-22 02:19:15,754 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 [2022-11-22 02:19:15,754 INFO L413 NwaCegarLoop]: 1820 mSDtfsCounter, 1252 mSDsluCounter, 4980 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 6800 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:15,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 6800 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1127 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-22 02:19:15,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12270 states. [2022-11-22 02:19:16,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12270 to 12259. [2022-11-22 02:19:16,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12259 states, 7295 states have (on average 1.304043865661412) internal successors, (9513), 7623 states have internal predecessors, (9513), 3948 states have call successors, (3948), 1041 states have call predecessors, (3948), 1013 states have return successors, (3982), 3685 states have call predecessors, (3982), 3936 states have call successors, (3982) [2022-11-22 02:19:16,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12259 states to 12259 states and 17443 transitions. [2022-11-22 02:19:16,644 INFO L78 Accepts]: Start accepts. Automaton has 12259 states and 17443 transitions. Word has length 187 [2022-11-22 02:19:16,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:16,645 INFO L495 AbstractCegarLoop]: Abstraction has 12259 states and 17443 transitions. [2022-11-22 02:19:16,645 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) [2022-11-22 02:19:16,645 INFO L276 IsEmpty]: Start isEmpty. Operand 12259 states and 17443 transitions. [2022-11-22 02:19:16,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-22 02:19:16,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:16,652 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 8, 7, 7, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:16,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 02:19:16,653 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)] === [2022-11-22 02:19:16,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:16,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1326605728, now seen corresponding path program 1 times [2022-11-22 02:19:16,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:16,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927826214] [2022-11-22 02:19:16,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:16,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:17,128 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2022-11-22 02:19:17,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:17,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927826214] [2022-11-22 02:19:17,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927826214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:17,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:17,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:19:17,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444497452] [2022-11-22 02:19:17,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:17,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:19:17,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:17,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:19:17,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:19:17,133 INFO L87 Difference]: Start difference. First operand 12259 states and 17443 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-22 02:19:21,218 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 [] [2022-11-22 02:19:23,225 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 [] [2022-11-22 02:19:23,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:23,919 INFO L93 Difference]: Finished difference Result 12273 states and 17456 transitions. [2022-11-22 02:19:23,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:19:23,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 193 [2022-11-22 02:19:23,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:23,978 INFO L225 Difference]: With dead ends: 12273 [2022-11-22 02:19:23,979 INFO L226 Difference]: Without dead ends: 12271 [2022-11-22 02:19:23,987 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 [2022-11-22 02:19:23,988 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 1577 mSDsluCounter, 2759 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 4148 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:23,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 4148 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 746 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2022-11-22 02:19:24,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12271 states. [2022-11-22 02:19:24,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12271 to 12271. [2022-11-22 02:19:24,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12271 states, 7304 states have (on average 1.3036692223439212) internal successors, (9522), 7632 states have internal predecessors, (9522), 3948 states have call successors, (3948), 1044 states have call predecessors, (3948), 1016 states have return successors, (3982), 3685 states have call predecessors, (3982), 3936 states have call successors, (3982) [2022-11-22 02:19:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12271 states to 12271 states and 17452 transitions. [2022-11-22 02:19:24,964 INFO L78 Accepts]: Start accepts. Automaton has 12271 states and 17452 transitions. Word has length 193 [2022-11-22 02:19:24,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:24,965 INFO L495 AbstractCegarLoop]: Abstraction has 12271 states and 17452 transitions. [2022-11-22 02:19:24,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-22 02:19:24,965 INFO L276 IsEmpty]: Start isEmpty. Operand 12271 states and 17452 transitions. [2022-11-22 02:19:24,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-22 02:19:24,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:24,972 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 9, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:24,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 02:19:24,973 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:19:24,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:24,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1973154659, now seen corresponding path program 1 times [2022-11-22 02:19:24,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:24,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366698515] [2022-11-22 02:19:24,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:24,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:25,431 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-11-22 02:19:25,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:25,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366698515] [2022-11-22 02:19:25,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366698515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:25,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:25,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:19:25,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625160880] [2022-11-22 02:19:25,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:25,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:19:25,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:25,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:19:25,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:19:25,435 INFO L87 Difference]: Start difference. First operand 12271 states and 17452 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 02:19:29,111 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 [] [2022-11-22 02:19:30,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:30,506 INFO L93 Difference]: Finished difference Result 12284 states and 17461 transitions. [2022-11-22 02:19:30,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:19:30,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 199 [2022-11-22 02:19:30,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:30,554 INFO L225 Difference]: With dead ends: 12284 [2022-11-22 02:19:30,554 INFO L226 Difference]: Without dead ends: 12282 [2022-11-22 02:19:30,562 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 [2022-11-22 02:19:30,562 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1265 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:30,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-22 02:19:30,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12282 states. [2022-11-22 02:19:31,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12282 to 12275. [2022-11-22 02:19:31,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12275 states, 7307 states have (on average 1.3035445463254414) internal successors, (9525), 7635 states have internal predecessors, (9525), 3948 states have call successors, (3948), 1045 states have call predecessors, (3948), 1017 states have return successors, (3982), 3685 states have call predecessors, (3982), 3936 states have call successors, (3982) [2022-11-22 02:19:31,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12275 states to 12275 states and 17455 transitions. [2022-11-22 02:19:31,481 INFO L78 Accepts]: Start accepts. Automaton has 12275 states and 17455 transitions. Word has length 199 [2022-11-22 02:19:31,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:31,482 INFO L495 AbstractCegarLoop]: Abstraction has 12275 states and 17455 transitions. [2022-11-22 02:19:31,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 02:19:31,482 INFO L276 IsEmpty]: Start isEmpty. Operand 12275 states and 17455 transitions. [2022-11-22 02:19:31,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-11-22 02:19:31,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:31,490 INFO L195 NwaCegarLoop]: trace histogram [13, 10, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:31,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 02:19:31,490 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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)] === [2022-11-22 02:19:31,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:31,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1312483072, now seen corresponding path program 1 times [2022-11-22 02:19:31,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:31,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796737862] [2022-11-22 02:19:31,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:31,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-22 02:19:31,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:31,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796737862] [2022-11-22 02:19:31,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796737862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:31,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:31,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:19:31,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581798503] [2022-11-22 02:19:31,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:31,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:19:31,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:31,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:19:31,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:19:31,971 INFO L87 Difference]: Start difference. First operand 12275 states and 17455 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 02:19:35,469 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 [] [2022-11-22 02:19:36,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:36,953 INFO L93 Difference]: Finished difference Result 12288 states and 17464 transitions. [2022-11-22 02:19:36,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:19:36,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 203 [2022-11-22 02:19:36,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:37,005 INFO L225 Difference]: With dead ends: 12288 [2022-11-22 02:19:37,005 INFO L226 Difference]: Without dead ends: 12286 [2022-11-22 02:19:37,009 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 [2022-11-22 02:19:37,010 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1265 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:37,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-22 02:19:37,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12286 states. [2022-11-22 02:19:37,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12286 to 12279. [2022-11-22 02:19:37,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12279 states, 7310 states have (on average 1.303419972640219) internal successors, (9528), 7638 states have internal predecessors, (9528), 3948 states have call successors, (3948), 1046 states have call predecessors, (3948), 1018 states have return successors, (3982), 3685 states have call predecessors, (3982), 3936 states have call successors, (3982) [2022-11-22 02:19:37,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12279 states to 12279 states and 17458 transitions. [2022-11-22 02:19:37,808 INFO L78 Accepts]: Start accepts. Automaton has 12279 states and 17458 transitions. Word has length 203 [2022-11-22 02:19:37,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:37,809 INFO L495 AbstractCegarLoop]: Abstraction has 12279 states and 17458 transitions. [2022-11-22 02:19:37,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 02:19:37,809 INFO L276 IsEmpty]: Start isEmpty. Operand 12279 states and 17458 transitions. [2022-11-22 02:19:37,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-22 02:19:37,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:37,823 INFO L195 NwaCegarLoop]: trace histogram [13, 11, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:37,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 02:19:37,823 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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)] === [2022-11-22 02:19:37,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:37,824 INFO L85 PathProgramCache]: Analyzing trace with hash 31345263, now seen corresponding path program 1 times [2022-11-22 02:19:37,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:37,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349980837] [2022-11-22 02:19:37,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:37,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2022-11-22 02:19:38,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:38,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349980837] [2022-11-22 02:19:38,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349980837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:38,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:38,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:19:38,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692471535] [2022-11-22 02:19:38,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:38,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:19:38,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:38,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:19:38,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:19:38,537 INFO L87 Difference]: Start difference. First operand 12279 states and 17458 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, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 02:19:42,030 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 [] [2022-11-22 02:19:43,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:43,381 INFO L93 Difference]: Finished difference Result 12292 states and 17467 transitions. [2022-11-22 02:19:43,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:19:43,382 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, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 207 [2022-11-22 02:19:43,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:43,426 INFO L225 Difference]: With dead ends: 12292 [2022-11-22 02:19:43,426 INFO L226 Difference]: Without dead ends: 12288 [2022-11-22 02:19:43,433 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 [2022-11-22 02:19:43,434 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1266 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:43,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-22 02:19:43,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12288 states. [2022-11-22 02:19:44,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12288 to 12281. [2022-11-22 02:19:44,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12281 states, 7312 states have (on average 1.3032002188183807) internal successors, (9529), 7639 states have internal predecessors, (9529), 3948 states have call successors, (3948), 1047 states have call predecessors, (3948), 1018 states have return successors, (3982), 3685 states have call predecessors, (3982), 3936 states have call successors, (3982) [2022-11-22 02:19:44,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12281 states to 12281 states and 17459 transitions. [2022-11-22 02:19:44,333 INFO L78 Accepts]: Start accepts. Automaton has 12281 states and 17459 transitions. Word has length 207 [2022-11-22 02:19:44,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:44,335 INFO L495 AbstractCegarLoop]: Abstraction has 12281 states and 17459 transitions. [2022-11-22 02:19:44,335 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, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 02:19:44,335 INFO L276 IsEmpty]: Start isEmpty. Operand 12281 states and 17459 transitions. [2022-11-22 02:19:44,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-22 02:19:44,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:44,344 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 11, 11, 9, 9, 9, 9, 9, 9, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:44,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 02:19:44,344 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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)] === [2022-11-22 02:19:44,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:44,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1087847328, now seen corresponding path program 1 times [2022-11-22 02:19:44,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:44,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115809542] [2022-11-22 02:19:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:44,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2022-11-22 02:19:44,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:44,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115809542] [2022-11-22 02:19:44,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115809542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:44,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:44,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:19:44,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290281116] [2022-11-22 02:19:44,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:44,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:19:44,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:44,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:19:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:19:44,888 INFO L87 Difference]: Start difference. First operand 12281 states and 17459 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-22 02:19:48,266 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 [] [2022-11-22 02:19:49,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:49,695 INFO L93 Difference]: Finished difference Result 12288 states and 17463 transitions. [2022-11-22 02:19:49,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:19:49,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 213 [2022-11-22 02:19:49,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:49,732 INFO L225 Difference]: With dead ends: 12288 [2022-11-22 02:19:49,732 INFO L226 Difference]: Without dead ends: 12193 [2022-11-22 02:19:49,739 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 [2022-11-22 02:19:49,740 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1261 mSDsluCounter, 4744 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 6443 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:49,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 6443 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 982 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-22 02:19:49,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12193 states. [2022-11-22 02:19:50,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12193 to 12188. [2022-11-22 02:19:50,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12188 states, 7271 states have (on average 1.3032595241369824) internal successors, (9476), 7587 states have internal predecessors, (9476), 3909 states have call successors, (3909), 1030 states have call predecessors, (3909), 1005 states have return successors, (3947), 3661 states have call predecessors, (3947), 3901 states have call successors, (3947) [2022-11-22 02:19:50,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12188 states to 12188 states and 17332 transitions. [2022-11-22 02:19:50,483 INFO L78 Accepts]: Start accepts. Automaton has 12188 states and 17332 transitions. Word has length 213 [2022-11-22 02:19:50,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:50,484 INFO L495 AbstractCegarLoop]: Abstraction has 12188 states and 17332 transitions. [2022-11-22 02:19:50,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-22 02:19:50,484 INFO L276 IsEmpty]: Start isEmpty. Operand 12188 states and 17332 transitions. [2022-11-22 02:19:50,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-22 02:19:50,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:50,491 INFO L195 NwaCegarLoop]: trace histogram [15, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:50,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 02:19:50,492 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:19:50,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:50,492 INFO L85 PathProgramCache]: Analyzing trace with hash 58966189, now seen corresponding path program 1 times [2022-11-22 02:19:50,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:50,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624738973] [2022-11-22 02:19:50,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:50,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:50,883 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2022-11-22 02:19:50,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:50,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624738973] [2022-11-22 02:19:50,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624738973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:50,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:50,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:19:50,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346490519] [2022-11-22 02:19:50,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:50,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:19:50,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:50,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:19:50,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:19:50,887 INFO L87 Difference]: Start difference. First operand 12188 states and 17332 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-22 02:19:54,666 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 [] [2022-11-22 02:19:55,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:55,618 INFO L93 Difference]: Finished difference Result 28180 states and 40101 transitions. [2022-11-22 02:19:55,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:19:55,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 214 [2022-11-22 02:19:55,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:55,692 INFO L225 Difference]: With dead ends: 28180 [2022-11-22 02:19:55,692 INFO L226 Difference]: Without dead ends: 16169 [2022-11-22 02:19:55,749 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 [2022-11-22 02:19:55,750 INFO L413 NwaCegarLoop]: 2174 mSDtfsCounter, 975 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 3524 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:55,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 3524 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 693 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-22 02:19:55,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16169 states. [2022-11-22 02:19:56,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16169 to 16091. [2022-11-22 02:19:56,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16091 states, 9718 states have (on average 1.3019139740687384) internal successors, (12652), 10116 states have internal predecessors, (12652), 5037 states have call successors, (5037), 1371 states have call predecessors, (5037), 1333 states have return successors, (5075), 4712 states have call predecessors, (5075), 5029 states have call successors, (5075) [2022-11-22 02:19:56,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16091 states to 16091 states and 22764 transitions. [2022-11-22 02:19:56,797 INFO L78 Accepts]: Start accepts. Automaton has 16091 states and 22764 transitions. Word has length 214 [2022-11-22 02:19:56,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:56,798 INFO L495 AbstractCegarLoop]: Abstraction has 16091 states and 22764 transitions. [2022-11-22 02:19:56,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-22 02:19:56,798 INFO L276 IsEmpty]: Start isEmpty. Operand 16091 states and 22764 transitions. [2022-11-22 02:19:56,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-11-22 02:19:56,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:56,807 INFO L195 NwaCegarLoop]: trace histogram [17, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:56,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 02:19:56,808 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:19:56,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:56,808 INFO L85 PathProgramCache]: Analyzing trace with hash 431891786, now seen corresponding path program 1 times [2022-11-22 02:19:56,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:56,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665355186] [2022-11-22 02:19:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:56,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:57,818 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2022-11-22 02:19:57,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:57,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665355186] [2022-11-22 02:19:57,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665355186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:57,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:57,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:19:57,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409813213] [2022-11-22 02:19:57,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:57,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:19:57,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:57,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:19:57,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:19:57,822 INFO L87 Difference]: Start difference. First operand 16091 states and 22764 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-22 02:20:01,501 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 [] [2022-11-22 02:20:02,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:20:02,919 INFO L93 Difference]: Finished difference Result 16105 states and 22776 transitions. [2022-11-22 02:20:02,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:20:02,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 275 [2022-11-22 02:20:02,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:20:02,992 INFO L225 Difference]: With dead ends: 16105 [2022-11-22 02:20:02,993 INFO L226 Difference]: Without dead ends: 16103 [2022-11-22 02:20:03,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:20:03,007 INFO L413 NwaCegarLoop]: 1846 mSDtfsCounter, 1222 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 6895 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:20:03,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 6895 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1122 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-22 02:20:03,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16103 states. [2022-11-22 02:20:03,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16103 to 16091. [2022-11-22 02:20:03,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16091 states, 9718 states have (on average 1.3006791520889072) internal successors, (12640), 10116 states have internal predecessors, (12640), 5037 states have call successors, (5037), 1371 states have call predecessors, (5037), 1333 states have return successors, (5075), 4712 states have call predecessors, (5075), 5029 states have call successors, (5075) [2022-11-22 02:20:03,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16091 states to 16091 states and 22752 transitions. [2022-11-22 02:20:03,964 INFO L78 Accepts]: Start accepts. Automaton has 16091 states and 22752 transitions. Word has length 275 [2022-11-22 02:20:03,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:20:03,964 INFO L495 AbstractCegarLoop]: Abstraction has 16091 states and 22752 transitions. [2022-11-22 02:20:03,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-22 02:20:03,965 INFO L276 IsEmpty]: Start isEmpty. Operand 16091 states and 22752 transitions. [2022-11-22 02:20:03,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-11-22 02:20:03,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:20:03,972 INFO L195 NwaCegarLoop]: trace histogram [17, 11, 11, 9, 9, 9, 9, 9, 9, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:20:03,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 02:20:03,973 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:20:03,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:20:03,974 INFO L85 PathProgramCache]: Analyzing trace with hash 564195690, now seen corresponding path program 1 times [2022-11-22 02:20:03,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:20:03,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626479957] [2022-11-22 02:20:03,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:20:03,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:20:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:20:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2022-11-22 02:20:04,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:20:04,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626479957] [2022-11-22 02:20:04,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626479957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:20:04,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:20:04,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:20:04,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955430604] [2022-11-22 02:20:04,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:20:04,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:20:04,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:20:04,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:20:04,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:20:04,711 INFO L87 Difference]: Start difference. First operand 16091 states and 22752 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-22 02:20:08,426 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 [] [2022-11-22 02:20:09,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:20:09,318 INFO L93 Difference]: Finished difference Result 16500 states and 23175 transitions. [2022-11-22 02:20:09,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:20:09,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 295 [2022-11-22 02:20:09,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:20:09,385 INFO L225 Difference]: With dead ends: 16500 [2022-11-22 02:20:09,385 INFO L226 Difference]: Without dead ends: 16498 [2022-11-22 02:20:09,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:20:09,396 INFO L413 NwaCegarLoop]: 1451 mSDtfsCounter, 331 mSDsluCounter, 4092 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 5543 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:20:09,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 5543 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1017 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-11-22 02:20:09,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16498 states. [2022-11-22 02:20:10,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16498 to 16498. [2022-11-22 02:20:10,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16498 states, 9934 states have (on average 1.2941413327964566) internal successors, (12856), 10335 states have internal predecessors, (12856), 5134 states have call successors, (5134), 1466 states have call predecessors, (5134), 1428 states have return successors, (5172), 4809 states have call predecessors, (5172), 5126 states have call successors, (5172) [2022-11-22 02:20:10,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16498 states to 16498 states and 23162 transitions. [2022-11-22 02:20:10,301 INFO L78 Accepts]: Start accepts. Automaton has 16498 states and 23162 transitions. Word has length 295 [2022-11-22 02:20:10,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:20:10,301 INFO L495 AbstractCegarLoop]: Abstraction has 16498 states and 23162 transitions. [2022-11-22 02:20:10,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-22 02:20:10,302 INFO L276 IsEmpty]: Start isEmpty. Operand 16498 states and 23162 transitions. [2022-11-22 02:20:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-22 02:20:10,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:20:10,312 INFO L195 NwaCegarLoop]: trace histogram [21, 15, 15, 11, 11, 11, 11, 11, 11, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:20:10,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 02:20:10,313 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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)] === [2022-11-22 02:20:10,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:20:10,313 INFO L85 PathProgramCache]: Analyzing trace with hash -649685408, now seen corresponding path program 1 times [2022-11-22 02:20:10,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:20:10,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649516120] [2022-11-22 02:20:10,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:20:10,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:20:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:20:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1132 trivial. 0 not checked. [2022-11-22 02:20:11,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:20:11,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649516120] [2022-11-22 02:20:11,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649516120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:20:11,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:20:11,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:20:11,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170681142] [2022-11-22 02:20:11,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:20:11,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:20:11,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:20:11,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:20:11,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:20:11,112 INFO L87 Difference]: Start difference. First operand 16498 states and 23162 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-22 02:20:15,191 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 [] [2022-11-22 02:20:16,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:20:16,598 INFO L93 Difference]: Finished difference Result 39871 states and 57359 transitions. [2022-11-22 02:20:16,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:20:16,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 404 [2022-11-22 02:20:16,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:20:16,685 INFO L225 Difference]: With dead ends: 39871 [2022-11-22 02:20:16,685 INFO L226 Difference]: Without dead ends: 23550 [2022-11-22 02:20:16,733 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 [2022-11-22 02:20:16,734 INFO L413 NwaCegarLoop]: 1968 mSDtfsCounter, 417 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 3478 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:20:16,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 3478 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 599 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-11-22 02:20:16,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23550 states. [2022-11-22 02:20:17,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23550 to 16508. [2022-11-22 02:20:17,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16508 states, 9944 states have (on average 1.2938455349959774) internal successors, (12866), 10345 states have internal predecessors, (12866), 5134 states have call successors, (5134), 1466 states have call predecessors, (5134), 1428 states have return successors, (5172), 4809 states have call predecessors, (5172), 5126 states have call successors, (5172) [2022-11-22 02:20:17,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16508 states to 16508 states and 23172 transitions. [2022-11-22 02:20:17,964 INFO L78 Accepts]: Start accepts. Automaton has 16508 states and 23172 transitions. Word has length 404 [2022-11-22 02:20:17,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:20:17,965 INFO L495 AbstractCegarLoop]: Abstraction has 16508 states and 23172 transitions. [2022-11-22 02:20:17,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-22 02:20:17,965 INFO L276 IsEmpty]: Start isEmpty. Operand 16508 states and 23172 transitions. [2022-11-22 02:20:17,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2022-11-22 02:20:17,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:20:17,978 INFO L195 NwaCegarLoop]: trace histogram [21, 15, 15, 11, 11, 11, 11, 11, 11, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:20:17,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-22 02:20:17,978 INFO L420 AbstractCegarLoop]: === Iteration 21 === 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)] === [2022-11-22 02:20:17,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:20:17,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1559669060, now seen corresponding path program 1 times [2022-11-22 02:20:17,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:20:17,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019073094] [2022-11-22 02:20:17,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:20:17,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:20:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:20:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2022-11-22 02:20:18,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:20:18,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019073094] [2022-11-22 02:20:18,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019073094] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:20:18,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158348554] [2022-11-22 02:20:18,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:20:18,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:20:18,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:20:18,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:20:18,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8747957-e29d-410e-8a24-5bd0dd0dfbbc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:20:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:20:20,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 4456 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:20:20,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:20:20,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 315 proven. 1 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-11-22 02:20:20,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:20:21,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2022-11-22 02:20:21,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158348554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:20:21,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1281759836] [2022-11-22 02:20:21,291 INFO L159 IcfgInterpreter]: Started Sifa with 211 locations of interest [2022-11-22 02:20:21,292 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:20:21,297 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:20:21,303 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:20:21,304 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs