./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/bin/utaipan-EQgc7hIp5V --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 2a992b8f7caf2083ee3b7e2acdd5fd118d6f91728d6dd0ef901811e301ef25da --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:46:16,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:46:16,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:46:16,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:46:16,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:46:16,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:46:16,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:46:16,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:46:16,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:46:16,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:46:16,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:46:16,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:46:16,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:46:16,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:46:16,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:46:16,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:46:16,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:46:16,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:46:16,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:46:16,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:46:16,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:46:16,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:46:16,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:46:16,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:46:16,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:46:16,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:46:16,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:46:16,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:46:16,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:46:16,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:46:16,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:46:16,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:46:16,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:46:16,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:46:16,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:46:16,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:46:16,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:46:16,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:46:16,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:46:16,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:46:16,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:46:16,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:46:16,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:46:16,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:46:16,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:46:16,458 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:46:16,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:46:16,460 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:46:16,460 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:46:16,460 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:46:16,460 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:46:16,461 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:46:16,462 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:46:16,462 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:46:16,463 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:46:16,463 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:46:16,463 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:46:16,463 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:46:16,464 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:46:16,464 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:46:16,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:46:16,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:46:16,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:46:16,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:46:16,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:46:16,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:46:16,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:46:16,468 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:46:16,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:46:16,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:46:16,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:46:16,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:46:16,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:46:16,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:46:16,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:46:16,472 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:46:16,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:46:16,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:46:16,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:46:16,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:46:16,473 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a992b8f7caf2083ee3b7e2acdd5fd118d6f91728d6dd0ef901811e301ef25da [2021-11-23 02:46:16,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:46:16,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:46:16,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:46:16,842 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:46:16,845 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:46:16,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i [2021-11-23 02:46:16,919 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/bin/utaipan-EQgc7hIp5V/data/00704779d/bff094cd7bda4a8b8d54a9d048c4ff20/FLAGfa1a57388 [2021-11-23 02:46:18,024 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:46:18,025 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i [2021-11-23 02:46:18,092 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/bin/utaipan-EQgc7hIp5V/data/00704779d/bff094cd7bda4a8b8d54a9d048c4ff20/FLAGfa1a57388 [2021-11-23 02:46:18,351 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/bin/utaipan-EQgc7hIp5V/data/00704779d/bff094cd7bda4a8b8d54a9d048c4ff20 [2021-11-23 02:46:18,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:46:18,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:46:18,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:46:18,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:46:18,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:46:18,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:46:18" (1/1) ... [2021-11-23 02:46:18,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b690acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:18, skipping insertion in model container [2021-11-23 02:46:18,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:46:18" (1/1) ... [2021-11-23 02:46:18,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:46:18,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:46:21,998 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375187,375200] [2021-11-23 02:46:22,002 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375356,375369] [2021-11-23 02:46:22,003 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375523,375536] [2021-11-23 02:46:22,004 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375691,375704] [2021-11-23 02:46:22,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:46:22,088 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:46:22,648 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375187,375200] [2021-11-23 02:46:22,649 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375356,375369] [2021-11-23 02:46:22,649 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375523,375536] [2021-11-23 02:46:22,650 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375691,375704] [2021-11-23 02:46:22,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:46:22,919 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:46:22,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:22 WrapperNode [2021-11-23 02:46:22,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:46:22,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:46:22,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:46:22,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:46:22,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:22" (1/1) ... [2021-11-23 02:46:23,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:22" (1/1) ... [2021-11-23 02:46:23,393 INFO L137 Inliner]: procedures = 451, calls = 2315, calls flagged for inlining = 231, calls inlined = 218, statements flattened = 6436 [2021-11-23 02:46:23,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:46:23,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:46:23,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:46:23,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:46:23,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:22" (1/1) ... [2021-11-23 02:46:23,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:22" (1/1) ... [2021-11-23 02:46:23,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:22" (1/1) ... [2021-11-23 02:46:23,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:22" (1/1) ... [2021-11-23 02:46:23,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:22" (1/1) ... [2021-11-23 02:46:23,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:22" (1/1) ... [2021-11-23 02:46:23,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:22" (1/1) ... [2021-11-23 02:46:23,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:46:23,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:46:23,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:46:23,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:46:23,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:22" (1/1) ... [2021-11-23 02:46:23,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:46:23,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:46:23,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:46:23,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf75e18-9599-4cb5-8932-c0279636b1c9/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:46:23,893 INFO L130 BoogieDeclarations]: Found specification of procedure softing_reset_chip [2021-11-23 02:46:23,894 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_reset_chip [2021-11-23 02:46:23,894 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-23 02:46:23,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_spin_of_softing [2021-11-23 02:46:23,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_spin_of_softing [2021-11-23 02:46:23,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:46:23,895 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:46:23,895 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 02:46:23,897 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 02:46:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:46:23,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:46:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 02:46:23,898 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 02:46:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2021-11-23 02:46:23,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2021-11-23 02:46:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-23 02:46:23,898 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-23 02:46:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:46:23,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:46:23,899 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2021-11-23 02:46:23,899 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2021-11-23 02:46:23,899 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-23 02:46:23,899 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-23 02:46:23,900 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-23 02:46:23,900 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-23 02:46:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2021-11-23 02:46:23,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2021-11-23 02:46:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 02:46:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure softing_fct_cmd [2021-11-23 02:46:23,901 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_fct_cmd [2021-11-23 02:46:23,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 02:46:23,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 02:46:23,902 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-23 02:46:23,902 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-23 02:46:23,902 INFO L130 BoogieDeclarations]: Found specification of procedure canif_is_active [2021-11-23 02:46:23,902 INFO L138 BoogieDeclarations]: Found implementation of procedure canif_is_active [2021-11-23 02:46:23,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:46:23,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:46:23,903 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2021-11-23 02:46:23,903 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2021-11-23 02:46:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:46:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-23 02:46:23,904 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-23 02:46:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure softing_netdev_open [2021-11-23 02:46:23,907 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_netdev_open [2021-11-23 02:46:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 02:46:23,907 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 02:46:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:46:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-23 02:46:23,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-23 02:46:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:46:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 02:46:23,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 02:46:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:46:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:46:23,910 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:46:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure open_candev [2021-11-23 02:46:23,910 INFO L138 BoogieDeclarations]: Found implementation of procedure open_candev [2021-11-23 02:46:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 02:46:23,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 02:46:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure softing_netdev_rx [2021-11-23 02:46:23,911 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_netdev_rx [2021-11-23 02:46:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:46:23,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:46:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:46:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-23 02:46:23,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-23 02:46:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 02:46:23,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 02:46:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-23 02:46:23,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-23 02:46:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure softing_card_shutdown [2021-11-23 02:46:23,914 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_card_shutdown [2021-11-23 02:46:23,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:46:23,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:46:23,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:46:23,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:46:23,916 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:46:23,916 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-23 02:46:23,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-23 02:46:23,917 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:46:23,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:46:23,917 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_set [2021-11-23 02:46:23,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_set [2021-11-23 02:46:23,919 INFO L130 BoogieDeclarations]: Found specification of procedure softing_netdev_cleanup [2021-11-23 02:46:23,919 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_netdev_cleanup [2021-11-23 02:46:23,919 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:46:23,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:46:23,921 INFO L130 BoogieDeclarations]: Found specification of procedure softing_startstop [2021-11-23 02:46:23,921 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_startstop [2021-11-23 02:46:23,921 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-23 02:46:23,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-23 02:46:23,921 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_add_us [2021-11-23 02:46:23,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_add_us [2021-11-23 02:46:23,922 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2021-11-23 02:46:23,922 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2021-11-23 02:46:23,922 INFO L130 BoogieDeclarations]: Found specification of procedure softing_bootloader_command [2021-11-23 02:46:23,922 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_bootloader_command [2021-11-23 02:46:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2021-11-23 02:46:23,923 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2021-11-23 02:46:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_62 [2021-11-23 02:46:23,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_62 [2021-11-23 02:46:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure softing_raw2ktime [2021-11-23 02:46:23,924 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_raw2ktime [2021-11-23 02:46:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2021-11-23 02:46:23,926 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2021-11-23 02:46:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:46:23,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:46:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure store_output [2021-11-23 02:46:23,932 INFO L138 BoogieDeclarations]: Found implementation of procedure store_output [2021-11-23 02:46:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:46:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:46:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure softing_pdev_probe [2021-11-23 02:46:23,934 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_pdev_probe [2021-11-23 02:46:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:46:23,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:46:23,941 INFO L130 BoogieDeclarations]: Found specification of procedure softing_netdev_stop [2021-11-23 02:46:23,941 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_netdev_stop [2021-11-23 02:46:23,941 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2021-11-23 02:46:23,941 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2021-11-23 02:46:23,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:46:23,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:46:23,942 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-23 02:46:23,942 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-23 02:46:23,942 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-23 02:46:23,942 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-23 02:46:23,943 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:46:23,943 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:46:23,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:46:23,943 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:46:23,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_softing_driver_exit_21_2 [2021-11-23 02:46:23,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_softing_driver_exit_21_2 [2021-11-23 02:46:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 02:46:23,944 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 02:46:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure softing_set_reset_dpram [2021-11-23 02:46:23,944 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_set_reset_dpram [2021-11-23 02:46:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:46:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-23 02:46:23,945 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-23 02:46:23,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:46:23,945 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-11-23 02:46:23,945 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-11-23 02:46:23,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:46:23,945 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-23 02:46:23,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-23 02:46:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 02:46:23,946 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 02:46:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 02:46:23,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 02:46:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-11-23 02:46:23,947 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-11-23 02:46:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-23 02:46:23,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-23 02:46:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure fw_parse [2021-11-23 02:46:23,947 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_parse [2021-11-23 02:46:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 02:46:23,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 02:46:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-23 02:46:23,948 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-23 02:46:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:46:23,948 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:46:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:46:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:46:23,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:46:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_61 [2021-11-23 02:46:23,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_61 [2021-11-23 02:46:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure _softing_fct_cmd [2021-11-23 02:46:23,950 INFO L138 BoogieDeclarations]: Found implementation of procedure _softing_fct_cmd [2021-11-23 02:46:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2021-11-23 02:46:23,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2021-11-23 02:46:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure softing_error_reporting [2021-11-23 02:46:23,950 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_error_reporting [2021-11-23 02:46:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 02:46:23,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 02:46:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure softing_pdev_remove [2021-11-23 02:46:23,951 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_pdev_remove [2021-11-23 02:46:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_spin_of_softing [2021-11-23 02:46:23,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_spin_of_softing [2021-11-23 02:46:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure softing_enable_irq [2021-11-23 02:46:23,954 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_enable_irq [2021-11-23 02:46:23,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:46:23,954 INFO L130 BoogieDeclarations]: Found specification of procedure softing_load_fw [2021-11-23 02:46:23,955 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_load_fw [2021-11-23 02:46:23,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 02:46:23,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 02:46:24,866 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:46:24,874 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:46:27,128 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:46:30,825 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 02:46:31,014 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:46:32,566 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:46:32,567 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:46:32,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:46:32 BoogieIcfgContainer [2021-11-23 02:46:32,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:46:32,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:46:32,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:46:32,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:46:32,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:46:18" (1/3) ... [2021-11-23 02:46:32,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78888dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:46:32, skipping insertion in model container [2021-11-23 02:46:32,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:22" (2/3) ... [2021-11-23 02:46:32,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78888dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:46:32, skipping insertion in model container [2021-11-23 02:46:32,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:46:32" (3/3) ... [2021-11-23 02:46:32,585 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i [2021-11-23 02:46:32,592 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:46:32,592 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 02:46:32,670 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:46:32,678 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:46:32,679 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 02:46:32,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 1696 states, 1056 states have (on average 1.3456439393939394) internal successors, (1421), 1070 states have internal predecessors, (1421), 555 states have call successors, (555), 83 states have call predecessors, (555), 82 states have return successors, (547), 547 states have call predecessors, (547), 547 states have call successors, (547) [2021-11-23 02:46:32,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-11-23 02:46:32,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:32,881 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:32,882 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:46:32,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:32,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1300419699, now seen corresponding path program 1 times [2021-11-23 02:46:32,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:32,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926561117] [2021-11-23 02:46:32,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:32,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:34,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2021-11-23 02:46:34,023 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:34,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926561117] [2021-11-23 02:46:34,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926561117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:34,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:34,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:46:34,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144945880] [2021-11-23 02:46:34,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:34,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:46:34,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:34,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:46:34,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:46:34,078 INFO L87 Difference]: Start difference. First operand has 1696 states, 1056 states have (on average 1.3456439393939394) internal successors, (1421), 1070 states have internal predecessors, (1421), 555 states have call successors, (555), 83 states have call predecessors, (555), 82 states have return successors, (547), 547 states have call predecessors, (547), 547 states have call successors, (547) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-23 02:46:37,258 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:40,172 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:41,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:41,254 INFO L93 Difference]: Finished difference Result 4804 states and 7311 transitions. [2021-11-23 02:46:41,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:46:41,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 411 [2021-11-23 02:46:41,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:41,340 INFO L225 Difference]: With dead ends: 4804 [2021-11-23 02:46:41,340 INFO L226 Difference]: Without dead ends: 3170 [2021-11-23 02:46:41,365 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:46:41,380 INFO L933 BasicCegarLoop]: 2702 mSDtfsCounter, 2226 mSDsluCounter, 2546 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2226 SdHoareTripleChecker+Valid, 4948 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:41,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2226 Valid, 4948 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-11-23 02:46:41,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2021-11-23 02:46:41,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 3144. [2021-11-23 02:46:41,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3144 states, 1979 states have (on average 1.3476503284487116) internal successors, (2667), 2007 states have internal predecessors, (2667), 1003 states have call successors, (1003), 160 states have call predecessors, (1003), 159 states have return successors, (1044), 995 states have call predecessors, (1044), 999 states have call successors, (1044) [2021-11-23 02:46:41,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 4714 transitions. [2021-11-23 02:46:41,954 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 4714 transitions. Word has length 411 [2021-11-23 02:46:41,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:41,961 INFO L470 AbstractCegarLoop]: Abstraction has 3144 states and 4714 transitions. [2021-11-23 02:46:41,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-23 02:46:41,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 4714 transitions. [2021-11-23 02:46:41,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-11-23 02:46:41,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:41,984 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:41,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:46:41,985 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:46:41,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:41,992 INFO L85 PathProgramCache]: Analyzing trace with hash -522513415, now seen corresponding path program 1 times [2021-11-23 02:46:41,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:41,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106014596] [2021-11-23 02:46:41,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:41,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2021-11-23 02:46:42,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:42,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106014596] [2021-11-23 02:46:42,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106014596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:42,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:42,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:46:42,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085723998] [2021-11-23 02:46:42,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:42,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:46:42,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:42,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:46:42,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:46:42,454 INFO L87 Difference]: Start difference. First operand 3144 states and 4714 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-23 02:46:45,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:47,586 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:49,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:49,624 INFO L93 Difference]: Finished difference Result 9187 states and 13775 transitions. [2021-11-23 02:46:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:46:49,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 411 [2021-11-23 02:46:49,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:49,768 INFO L225 Difference]: With dead ends: 9187 [2021-11-23 02:46:49,769 INFO L226 Difference]: Without dead ends: 6122 [2021-11-23 02:46:49,792 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:46:49,793 INFO L933 BasicCegarLoop]: 2666 mSDtfsCounter, 2301 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 4818 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:49,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2301 Valid, 4818 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 631 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-11-23 02:46:49,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2021-11-23 02:46:50,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6118. [2021-11-23 02:46:50,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6118 states, 3882 states have (on average 1.3500772797527048) internal successors, (5241), 3930 states have internal predecessors, (5241), 1918 states have call successors, (1918), 316 states have call predecessors, (1918), 315 states have return successors, (2004), 1909 states have call predecessors, (2004), 1914 states have call successors, (2004) [2021-11-23 02:46:50,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 9163 transitions. [2021-11-23 02:46:50,275 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 9163 transitions. Word has length 411 [2021-11-23 02:46:50,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:50,281 INFO L470 AbstractCegarLoop]: Abstraction has 6118 states and 9163 transitions. [2021-11-23 02:46:50,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-23 02:46:50,284 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 9163 transitions. [2021-11-23 02:46:50,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2021-11-23 02:46:50,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:50,298 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:50,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:46:50,299 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:46:50,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:50,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1215184926, now seen corresponding path program 1 times [2021-11-23 02:46:50,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:50,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507807903] [2021-11-23 02:46:50,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:50,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:50,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2021-11-23 02:46:50,675 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:50,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507807903] [2021-11-23 02:46:50,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507807903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:50,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:50,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:46:50,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25343754] [2021-11-23 02:46:50,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:50,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:46:50,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:50,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:46:50,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:46:50,680 INFO L87 Difference]: Start difference. First operand 6118 states and 9163 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-23 02:46:53,309 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:56,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:56,545 INFO L93 Difference]: Finished difference Result 16900 states and 25587 transitions. [2021-11-23 02:46:56,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:46:56,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 418 [2021-11-23 02:46:56,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:56,651 INFO L225 Difference]: With dead ends: 16900 [2021-11-23 02:46:56,651 INFO L226 Difference]: Without dead ends: 10861 [2021-11-23 02:46:56,684 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:46:56,685 INFO L933 BasicCegarLoop]: 2640 mSDtfsCounter, 1906 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1906 SdHoareTripleChecker+Valid, 4827 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:56,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1906 Valid, 4827 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 637 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2021-11-23 02:46:56,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10861 states. [2021-11-23 02:46:57,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10861 to 10828. [2021-11-23 02:46:57,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10828 states, 6850 states have (on average 1.3493430656934307) internal successors, (9243), 6940 states have internal predecessors, (9243), 3388 states have call successors, (3388), 592 states have call predecessors, (3388), 587 states have return successors, (3850), 3355 states have call predecessors, (3850), 3384 states have call successors, (3850) [2021-11-23 02:46:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10828 states to 10828 states and 16481 transitions. [2021-11-23 02:46:57,440 INFO L78 Accepts]: Start accepts. Automaton has 10828 states and 16481 transitions. Word has length 418 [2021-11-23 02:46:57,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:57,441 INFO L470 AbstractCegarLoop]: Abstraction has 10828 states and 16481 transitions. [2021-11-23 02:46:57,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-23 02:46:57,443 INFO L276 IsEmpty]: Start isEmpty. Operand 10828 states and 16481 transitions. [2021-11-23 02:46:57,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-11-23 02:46:57,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:57,459 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:57,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:46:57,459 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:46:57,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:57,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1488726530, now seen corresponding path program 1 times [2021-11-23 02:46:57,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:57,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692397937] [2021-11-23 02:46:57,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:57,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2021-11-23 02:46:57,905 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:57,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692397937] [2021-11-23 02:46:57,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692397937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:57,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:57,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:46:57,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641045878] [2021-11-23 02:46:57,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:57,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:46:57,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:57,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:46:57,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:46:57,911 INFO L87 Difference]: Start difference. First operand 10828 states and 16481 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-23 02:47:05,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:10,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:47:10,849 INFO L93 Difference]: Finished difference Result 32709 states and 49449 transitions. [2021-11-23 02:47:10,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:47:10,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 431 [2021-11-23 02:47:10,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:47:11,035 INFO L225 Difference]: With dead ends: 32709 [2021-11-23 02:47:11,035 INFO L226 Difference]: Without dead ends: 21960 [2021-11-23 02:47:11,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:47:11,107 INFO L933 BasicCegarLoop]: 3039 mSDtfsCounter, 8043 mSDsluCounter, 4217 mSDsCounter, 0 mSdLazyCounter, 2837 mSolverCounterSat, 2716 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8254 SdHoareTripleChecker+Valid, 6591 SdHoareTripleChecker+Invalid, 5554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2716 IncrementalHoareTripleChecker+Valid, 2837 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:47:11,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8254 Valid, 6591 Invalid, 5554 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2716 Valid, 2837 Invalid, 1 Unknown, 0 Unchecked, 12.0s Time] [2021-11-23 02:47:11,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21960 states. [2021-11-23 02:47:12,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21960 to 21886. [2021-11-23 02:47:12,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21886 states, 13746 states have (on average 1.3376254910519423) internal successors, (18387), 13954 states have internal predecessors, (18387), 6805 states have call successors, (6805), 1347 states have call predecessors, (6805), 1332 states have return successors, (7708), 6708 states have call predecessors, (7708), 6801 states have call successors, (7708) [2021-11-23 02:47:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21886 states to 21886 states and 32900 transitions. [2021-11-23 02:47:12,807 INFO L78 Accepts]: Start accepts. Automaton has 21886 states and 32900 transitions. Word has length 431 [2021-11-23 02:47:12,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:47:12,808 INFO L470 AbstractCegarLoop]: Abstraction has 21886 states and 32900 transitions. [2021-11-23 02:47:12,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-23 02:47:12,809 INFO L276 IsEmpty]: Start isEmpty. Operand 21886 states and 32900 transitions. [2021-11-23 02:47:12,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-11-23 02:47:12,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:47:12,822 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:47:12,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:47:12,823 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:47:12,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:47:12,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2041525351, now seen corresponding path program 1 times [2021-11-23 02:47:12,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:47:12,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038102410] [2021-11-23 02:47:12,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:12,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:47:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2021-11-23 02:47:13,168 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:47:13,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038102410] [2021-11-23 02:47:13,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038102410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:47:13,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:47:13,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:47:13,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075942028] [2021-11-23 02:47:13,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:47:13,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:47:13,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:47:13,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:47:13,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:47:13,172 INFO L87 Difference]: Start difference. First operand 21886 states and 32900 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-23 02:47:16,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:19,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:47:19,681 INFO L93 Difference]: Finished difference Result 47805 states and 72026 transitions. [2021-11-23 02:47:19,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:47:19,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 433 [2021-11-23 02:47:19,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:47:19,879 INFO L225 Difference]: With dead ends: 47805 [2021-11-23 02:47:19,879 INFO L226 Difference]: Without dead ends: 25998 [2021-11-23 02:47:19,985 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:47:19,989 INFO L933 BasicCegarLoop]: 3104 mSDtfsCounter, 1757 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1758 SdHoareTripleChecker+Valid, 5233 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:47:19,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1758 Valid, 5233 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 780 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-23 02:47:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25998 states. [2021-11-23 02:47:21,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25998 to 25963. [2021-11-23 02:47:21,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25963 states, 16402 states have (on average 1.3385562736251677) internal successors, (21955), 16664 states have internal predecessors, (21955), 8083 states have call successors, (8083), 1500 states have call predecessors, (8083), 1475 states have return successors, (8799), 7928 states have call predecessors, (8799), 8079 states have call successors, (8799) [2021-11-23 02:47:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25963 states to 25963 states and 38837 transitions. [2021-11-23 02:47:21,896 INFO L78 Accepts]: Start accepts. Automaton has 25963 states and 38837 transitions. Word has length 433 [2021-11-23 02:47:21,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:47:21,897 INFO L470 AbstractCegarLoop]: Abstraction has 25963 states and 38837 transitions. [2021-11-23 02:47:21,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-23 02:47:21,898 INFO L276 IsEmpty]: Start isEmpty. Operand 25963 states and 38837 transitions. [2021-11-23 02:47:21,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2021-11-23 02:47:21,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:47:21,908 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:47:21,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:47:21,909 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:47:21,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:47:21,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1830707001, now seen corresponding path program 1 times [2021-11-23 02:47:21,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:47:21,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770091866] [2021-11-23 02:47:21,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:21,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:47:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:22,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6279 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6279 trivial. 0 not checked. [2021-11-23 02:47:22,712 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:47:22,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770091866] [2021-11-23 02:47:22,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770091866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:47:22,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:47:22,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:47:22,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392795312] [2021-11-23 02:47:22,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:47:22,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:47:22,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:47:22,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:47:22,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:47:22,717 INFO L87 Difference]: Start difference. First operand 25963 states and 38837 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-23 02:47:24,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:26,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:28,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:32,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:47:32,357 INFO L93 Difference]: Finished difference Result 25969 states and 38842 transitions. [2021-11-23 02:47:32,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:47:32,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 453 [2021-11-23 02:47:32,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:47:32,617 INFO L225 Difference]: With dead ends: 25969 [2021-11-23 02:47:32,617 INFO L226 Difference]: Without dead ends: 25967 [2021-11-23 02:47:32,630 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:47:32,632 INFO L933 BasicCegarLoop]: 2182 mSDtfsCounter, 2385 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2396 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:47:32,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2396 Valid, 6533 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 939 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2021-11-23 02:47:32,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25967 states. [2021-11-23 02:47:34,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25967 to 25967. [2021-11-23 02:47:34,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25967 states, 16405 states have (on average 1.33849436147516) internal successors, (21958), 16667 states have internal predecessors, (21958), 8083 states have call successors, (8083), 1501 states have call predecessors, (8083), 1476 states have return successors, (8799), 7928 states have call predecessors, (8799), 8079 states have call successors, (8799) [2021-11-23 02:47:34,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25967 states to 25967 states and 38840 transitions. [2021-11-23 02:47:34,313 INFO L78 Accepts]: Start accepts. Automaton has 25967 states and 38840 transitions. Word has length 453 [2021-11-23 02:47:34,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:47:34,314 INFO L470 AbstractCegarLoop]: Abstraction has 25967 states and 38840 transitions. [2021-11-23 02:47:34,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-23 02:47:34,315 INFO L276 IsEmpty]: Start isEmpty. Operand 25967 states and 38840 transitions. [2021-11-23 02:47:34,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-11-23 02:47:34,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:47:34,325 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:47:34,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:47:34,326 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:47:34,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:47:34,327 INFO L85 PathProgramCache]: Analyzing trace with hash -970857620, now seen corresponding path program 1 times [2021-11-23 02:47:34,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:47:34,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447514858] [2021-11-23 02:47:34,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:34,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:47:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6288 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6286 trivial. 0 not checked. [2021-11-23 02:47:35,110 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:47:35,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447514858] [2021-11-23 02:47:35,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447514858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:47:35,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:47:35,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:47:35,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832302561] [2021-11-23 02:47:35,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:47:35,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:47:35,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:47:35,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:47:35,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:47:35,114 INFO L87 Difference]: Start difference. First operand 25967 states and 38840 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-23 02:47:38,073 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:40,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:42,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:45,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:47:45,601 INFO L93 Difference]: Finished difference Result 25973 states and 38845 transitions. [2021-11-23 02:47:45,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:47:45,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 461 [2021-11-23 02:47:45,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:47:45,752 INFO L225 Difference]: With dead ends: 25973 [2021-11-23 02:47:45,752 INFO L226 Difference]: Without dead ends: 25971 [2021-11-23 02:47:45,765 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:47:45,767 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2379 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2389 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:47:45,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2389 Valid, 6536 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 938 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2021-11-23 02:47:45,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25971 states. [2021-11-23 02:47:47,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25971 to 25971. [2021-11-23 02:47:47,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25971 states, 16408 states have (on average 1.3384324719648952) internal successors, (21961), 16670 states have internal predecessors, (21961), 8083 states have call successors, (8083), 1502 states have call predecessors, (8083), 1477 states have return successors, (8799), 7928 states have call predecessors, (8799), 8079 states have call successors, (8799) [2021-11-23 02:47:47,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25971 states to 25971 states and 38843 transitions. [2021-11-23 02:47:47,228 INFO L78 Accepts]: Start accepts. Automaton has 25971 states and 38843 transitions. Word has length 461 [2021-11-23 02:47:47,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:47:47,230 INFO L470 AbstractCegarLoop]: Abstraction has 25971 states and 38843 transitions. [2021-11-23 02:47:47,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-23 02:47:47,230 INFO L276 IsEmpty]: Start isEmpty. Operand 25971 states and 38843 transitions. [2021-11-23 02:47:47,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2021-11-23 02:47:47,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:47:47,242 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:47:47,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:47:47,243 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:47:47,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:47:47,243 INFO L85 PathProgramCache]: Analyzing trace with hash -107682790, now seen corresponding path program 1 times [2021-11-23 02:47:47,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:47:47,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577233581] [2021-11-23 02:47:47,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:47,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:47:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6294 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6290 trivial. 0 not checked. [2021-11-23 02:47:47,659 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:47:47,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577233581] [2021-11-23 02:47:47,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577233581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:47:47,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:47:47,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:47:47,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163892034] [2021-11-23 02:47:47,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:47:47,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:47:47,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:47:47,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:47:47,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:47:47,663 INFO L87 Difference]: Start difference. First operand 25971 states and 38843 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-23 02:47:50,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:55,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:47:55,199 INFO L93 Difference]: Finished difference Result 27755 states and 41220 transitions. [2021-11-23 02:47:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:47:55,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 466 [2021-11-23 02:47:55,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:47:55,371 INFO L225 Difference]: With dead ends: 27755 [2021-11-23 02:47:55,371 INFO L226 Difference]: Without dead ends: 27753 [2021-11-23 02:47:55,390 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:47:55,391 INFO L933 BasicCegarLoop]: 2335 mSDtfsCounter, 2000 mSDsluCounter, 6251 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 7877 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:47:55,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2011 Valid, 7877 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1039 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2021-11-23 02:47:55,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27753 states. [2021-11-23 02:47:57,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27753 to 27749. [2021-11-23 02:47:57,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27749 states, 17423 states have (on average 1.3313436262411755) internal successors, (23196), 17707 states have internal predecessors, (23196), 8644 states have call successors, (8644), 1702 states have call predecessors, (8644), 1679 states have return successors, (9376), 8485 states have call predecessors, (9376), 8640 states have call successors, (9376) [2021-11-23 02:47:57,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27749 states to 27749 states and 41216 transitions. [2021-11-23 02:47:57,159 INFO L78 Accepts]: Start accepts. Automaton has 27749 states and 41216 transitions. Word has length 466 [2021-11-23 02:47:57,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:47:57,160 INFO L470 AbstractCegarLoop]: Abstraction has 27749 states and 41216 transitions. [2021-11-23 02:47:57,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-23 02:47:57,160 INFO L276 IsEmpty]: Start isEmpty. Operand 27749 states and 41216 transitions. [2021-11-23 02:47:57,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2021-11-23 02:47:57,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:47:57,173 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:47:57,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:47:57,174 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:47:57,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:47:57,175 INFO L85 PathProgramCache]: Analyzing trace with hash -402302974, now seen corresponding path program 1 times [2021-11-23 02:47:57,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:47:57,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417220512] [2021-11-23 02:47:57,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:57,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:47:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6299 trivial. 0 not checked. [2021-11-23 02:47:57,618 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:47:57,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417220512] [2021-11-23 02:47:57,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417220512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:47:57,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:47:57,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:47:57,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817145815] [2021-11-23 02:47:57,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:47:57,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:47:57,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:47:57,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:47:57,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:47:57,622 INFO L87 Difference]: Start difference. First operand 27749 states and 41216 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-23 02:48:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:48:04,761 INFO L93 Difference]: Finished difference Result 27755 states and 41221 transitions. [2021-11-23 02:48:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:48:04,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 472 [2021-11-23 02:48:04,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:48:04,912 INFO L225 Difference]: With dead ends: 27755 [2021-11-23 02:48:04,913 INFO L226 Difference]: Without dead ends: 27753 [2021-11-23 02:48:05,015 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:48:05,020 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2379 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2387 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:48:05,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2387 Valid, 6536 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-23 02:48:05,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27753 states. [2021-11-23 02:48:06,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27753 to 27753. [2021-11-23 02:48:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27753 states, 17426 states have (on average 1.3312865832663836) internal successors, (23199), 17710 states have internal predecessors, (23199), 8644 states have call successors, (8644), 1703 states have call predecessors, (8644), 1680 states have return successors, (9376), 8485 states have call predecessors, (9376), 8640 states have call successors, (9376) [2021-11-23 02:48:06,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27753 states to 27753 states and 41219 transitions. [2021-11-23 02:48:06,556 INFO L78 Accepts]: Start accepts. Automaton has 27753 states and 41219 transitions. Word has length 472 [2021-11-23 02:48:06,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:48:06,557 INFO L470 AbstractCegarLoop]: Abstraction has 27753 states and 41219 transitions. [2021-11-23 02:48:06,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-23 02:48:06,557 INFO L276 IsEmpty]: Start isEmpty. Operand 27753 states and 41219 transitions. [2021-11-23 02:48:06,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2021-11-23 02:48:06,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:48:06,570 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:48:06,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:48:06,571 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:48:06,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:48:06,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2130743737, now seen corresponding path program 1 times [2021-11-23 02:48:06,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:48:06,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853874416] [2021-11-23 02:48:06,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:48:06,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:48:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:48:06,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6311 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6303 trivial. 0 not checked. [2021-11-23 02:48:06,967 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:48:06,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853874416] [2021-11-23 02:48:06,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853874416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:48:06,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:48:06,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:48:06,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49370951] [2021-11-23 02:48:06,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:48:06,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:48:06,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:48:06,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:48:06,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:48:06,971 INFO L87 Difference]: Start difference. First operand 27753 states and 41219 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-23 02:48:10,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:13,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:48:13,479 INFO L93 Difference]: Finished difference Result 27763 states and 41226 transitions. [2021-11-23 02:48:13,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:48:13,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 473 [2021-11-23 02:48:13,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:48:13,622 INFO L225 Difference]: With dead ends: 27763 [2021-11-23 02:48:13,623 INFO L226 Difference]: Without dead ends: 27761 [2021-11-23 02:48:13,643 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:48:13,644 INFO L933 BasicCegarLoop]: 2335 mSDtfsCounter, 2001 mSDsluCounter, 6251 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 7877 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:48:13,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2010 Valid, 7877 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1039 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2021-11-23 02:48:13,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27761 states. [2021-11-23 02:48:15,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27761 to 27757. [2021-11-23 02:48:15,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27757 states, 17429 states have (on average 1.3312295599288542) internal successors, (23202), 17713 states have internal predecessors, (23202), 8644 states have call successors, (8644), 1704 states have call predecessors, (8644), 1681 states have return successors, (9376), 8485 states have call predecessors, (9376), 8640 states have call successors, (9376) [2021-11-23 02:48:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27757 states to 27757 states and 41222 transitions. [2021-11-23 02:48:15,269 INFO L78 Accepts]: Start accepts. Automaton has 27757 states and 41222 transitions. Word has length 473 [2021-11-23 02:48:15,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:48:15,270 INFO L470 AbstractCegarLoop]: Abstraction has 27757 states and 41222 transitions. [2021-11-23 02:48:15,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-23 02:48:15,270 INFO L276 IsEmpty]: Start isEmpty. Operand 27757 states and 41222 transitions. [2021-11-23 02:48:15,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2021-11-23 02:48:15,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:48:15,284 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:48:15,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:48:15,284 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:48:15,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:48:15,285 INFO L85 PathProgramCache]: Analyzing trace with hash 358915180, now seen corresponding path program 1 times [2021-11-23 02:48:15,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:48:15,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783989214] [2021-11-23 02:48:15,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:48:15,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:48:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:48:15,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6336 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6326 trivial. 0 not checked. [2021-11-23 02:48:15,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:48:15,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783989214] [2021-11-23 02:48:15,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783989214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:48:15,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:48:15,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:48:15,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354385724] [2021-11-23 02:48:15,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:48:15,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:48:15,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:48:15,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:48:15,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:48:15,638 INFO L87 Difference]: Start difference. First operand 27757 states and 41222 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-23 02:48:19,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:22,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:48:22,874 INFO L93 Difference]: Finished difference Result 27763 states and 41227 transitions. [2021-11-23 02:48:22,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:48:22,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 481 [2021-11-23 02:48:22,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:48:22,970 INFO L225 Difference]: With dead ends: 27763 [2021-11-23 02:48:22,970 INFO L226 Difference]: Without dead ends: 27761 [2021-11-23 02:48:22,982 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:48:22,983 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2379 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2385 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:48:22,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2385 Valid, 6536 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-11-23 02:48:23,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27761 states. [2021-11-23 02:48:24,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27761 to 27761. [2021-11-23 02:48:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27761 states, 17432 states have (on average 1.3311725562184489) internal successors, (23205), 17716 states have internal predecessors, (23205), 8644 states have call successors, (8644), 1705 states have call predecessors, (8644), 1682 states have return successors, (9376), 8485 states have call predecessors, (9376), 8640 states have call successors, (9376) [2021-11-23 02:48:24,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27761 states to 27761 states and 41225 transitions. [2021-11-23 02:48:24,315 INFO L78 Accepts]: Start accepts. Automaton has 27761 states and 41225 transitions. Word has length 481 [2021-11-23 02:48:24,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:48:24,316 INFO L470 AbstractCegarLoop]: Abstraction has 27761 states and 41225 transitions. [2021-11-23 02:48:24,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-23 02:48:24,317 INFO L276 IsEmpty]: Start isEmpty. Operand 27761 states and 41225 transitions. [2021-11-23 02:48:24,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2021-11-23 02:48:24,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:48:24,330 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:48:24,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 02:48:24,330 INFO L402 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)] === [2021-11-23 02:48:24,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:48:24,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1802360294, now seen corresponding path program 1 times [2021-11-23 02:48:24,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:48:24,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356086471] [2021-11-23 02:48:24,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:48:24,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:48:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:48:24,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6358 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6346 trivial. 0 not checked. [2021-11-23 02:48:24,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:48:24,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356086471] [2021-11-23 02:48:24,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356086471] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:48:24,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:48:24,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:48:24,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585378752] [2021-11-23 02:48:24,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:48:24,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:48:24,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:48:24,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:48:24,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:48:24,655 INFO L87 Difference]: Start difference. First operand 27761 states and 41225 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-23 02:48:27,426 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:29,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:34,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:48:34,737 INFO L93 Difference]: Finished difference Result 27767 states and 41230 transitions. [2021-11-23 02:48:34,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:48:34,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 486 [2021-11-23 02:48:34,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:48:34,878 INFO L225 Difference]: With dead ends: 27767 [2021-11-23 02:48:34,878 INFO L226 Difference]: Without dead ends: 27765 [2021-11-23 02:48:34,893 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:48:34,894 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2379 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:48:34,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2384 Valid, 6536 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 939 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2021-11-23 02:48:34,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27765 states. [2021-11-23 02:48:36,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27765 to 27765. [2021-11-23 02:48:36,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27765 states, 17435 states have (on average 1.3311155721250358) internal successors, (23208), 17719 states have internal predecessors, (23208), 8644 states have call successors, (8644), 1706 states have call predecessors, (8644), 1683 states have return successors, (9376), 8485 states have call predecessors, (9376), 8640 states have call successors, (9376) [2021-11-23 02:48:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27765 states to 27765 states and 41228 transitions. [2021-11-23 02:48:36,360 INFO L78 Accepts]: Start accepts. Automaton has 27765 states and 41228 transitions. Word has length 486 [2021-11-23 02:48:36,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:48:36,361 INFO L470 AbstractCegarLoop]: Abstraction has 27765 states and 41228 transitions. [2021-11-23 02:48:36,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-23 02:48:36,361 INFO L276 IsEmpty]: Start isEmpty. Operand 27765 states and 41228 transitions. [2021-11-23 02:48:36,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2021-11-23 02:48:36,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:48:36,376 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:48:36,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 02:48:36,377 INFO L402 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)] === [2021-11-23 02:48:36,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:48:36,378 INFO L85 PathProgramCache]: Analyzing trace with hash -431009249, now seen corresponding path program 1 times [2021-11-23 02:48:36,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:48:36,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518514447] [2021-11-23 02:48:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:48:36,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:48:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:48:36,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6377 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6363 trivial. 0 not checked. [2021-11-23 02:48:36,867 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:48:36,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518514447] [2021-11-23 02:48:36,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518514447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:48:36,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:48:36,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:48:36,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043747539] [2021-11-23 02:48:36,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:48:36,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:48:36,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:48:36,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:48:36,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:48:36,870 INFO L87 Difference]: Start difference. First operand 27765 states and 41228 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-23 02:48:38,859 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:40,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:42,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:47,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:48:47,024 INFO L93 Difference]: Finished difference Result 27771 states and 41233 transitions. [2021-11-23 02:48:47,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:48:47,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 488 [2021-11-23 02:48:47,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:48:47,130 INFO L225 Difference]: With dead ends: 27771 [2021-11-23 02:48:47,130 INFO L226 Difference]: Without dead ends: 27769 [2021-11-23 02:48:47,144 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:48:47,145 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2380 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:48:47,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2384 Valid, 6536 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 938 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2021-11-23 02:48:47,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27769 states. [2021-11-23 02:48:48,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27769 to 27769. [2021-11-23 02:48:48,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27769 states, 17438 states have (on average 1.3310586076384907) internal successors, (23211), 17722 states have internal predecessors, (23211), 8644 states have call successors, (8644), 1707 states have call predecessors, (8644), 1684 states have return successors, (9376), 8485 states have call predecessors, (9376), 8640 states have call successors, (9376) [2021-11-23 02:48:48,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27769 states to 27769 states and 41231 transitions. [2021-11-23 02:48:48,609 INFO L78 Accepts]: Start accepts. Automaton has 27769 states and 41231 transitions. Word has length 488 [2021-11-23 02:48:48,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:48:48,610 INFO L470 AbstractCegarLoop]: Abstraction has 27769 states and 41231 transitions. [2021-11-23 02:48:48,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-23 02:48:48,610 INFO L276 IsEmpty]: Start isEmpty. Operand 27769 states and 41231 transitions. [2021-11-23 02:48:48,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2021-11-23 02:48:48,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:48:48,626 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 9, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:48:48,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 02:48:48,627 INFO L402 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)] === [2021-11-23 02:48:48,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:48:48,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1276594918, now seen corresponding path program 1 times [2021-11-23 02:48:48,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:48:48,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724624430] [2021-11-23 02:48:48,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:48:48,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:48:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:48:49,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6414 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6398 trivial. 0 not checked. [2021-11-23 02:48:49,311 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:48:49,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724624430] [2021-11-23 02:48:49,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724624430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:48:49,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:48:49,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:48:49,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18267290] [2021-11-23 02:48:49,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:48:49,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:48:49,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:48:49,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:48:49,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:48:49,315 INFO L87 Difference]: Start difference. First operand 27769 states and 41231 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2021-11-23 02:48:55,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:48:55,181 INFO L93 Difference]: Finished difference Result 27775 states and 41236 transitions. [2021-11-23 02:48:55,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:48:55,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 496 [2021-11-23 02:48:55,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:48:55,266 INFO L225 Difference]: With dead ends: 27775 [2021-11-23 02:48:55,266 INFO L226 Difference]: Without dead ends: 27773 [2021-11-23 02:48:55,278 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:48:55,278 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2379 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2382 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:48:55,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2382 Valid, 6536 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-23 02:48:55,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27773 states. [2021-11-23 02:48:56,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27773 to 27773. [2021-11-23 02:48:56,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27773 states, 17441 states have (on average 1.3310016627486956) internal successors, (23214), 17725 states have internal predecessors, (23214), 8644 states have call successors, (8644), 1708 states have call predecessors, (8644), 1685 states have return successors, (9376), 8485 states have call predecessors, (9376), 8640 states have call successors, (9376) [2021-11-23 02:48:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27773 states to 27773 states and 41234 transitions. [2021-11-23 02:48:56,742 INFO L78 Accepts]: Start accepts. Automaton has 27773 states and 41234 transitions. Word has length 496 [2021-11-23 02:48:56,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:48:56,743 INFO L470 AbstractCegarLoop]: Abstraction has 27773 states and 41234 transitions. [2021-11-23 02:48:56,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2021-11-23 02:48:56,743 INFO L276 IsEmpty]: Start isEmpty. Operand 27773 states and 41234 transitions. [2021-11-23 02:48:56,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2021-11-23 02:48:56,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:48:56,754 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:48:56,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 02:48:56,755 INFO L402 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)] === [2021-11-23 02:48:56,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:48:56,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2044750484, now seen corresponding path program 1 times [2021-11-23 02:48:56,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:48:56,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85205709] [2021-11-23 02:48:56,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:48:56,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:48:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:48:57,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6448 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 6430 trivial. 0 not checked. [2021-11-23 02:48:57,051 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:48:57,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85205709] [2021-11-23 02:48:57,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85205709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:48:57,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:48:57,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:48:57,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475790165] [2021-11-23 02:48:57,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:48:57,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:48:57,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:48:57,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:48:57,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:48:57,054 INFO L87 Difference]: Start difference. First operand 27773 states and 41234 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:48:59,744 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:02,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:06,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:06,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:49:06,677 INFO L93 Difference]: Finished difference Result 27779 states and 41239 transitions. [2021-11-23 02:49:06,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:49:06,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 501 [2021-11-23 02:49:06,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:49:06,777 INFO L225 Difference]: With dead ends: 27779 [2021-11-23 02:49:06,777 INFO L226 Difference]: Without dead ends: 27777 [2021-11-23 02:49:06,790 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:49:06,791 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2379 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2381 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:49:06,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2381 Valid, 6536 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2021-11-23 02:49:06,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27777 states. [2021-11-23 02:49:08,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27777 to 27777. [2021-11-23 02:49:08,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27777 states, 17444 states have (on average 1.33094473744554) internal successors, (23217), 17728 states have internal predecessors, (23217), 8644 states have call successors, (8644), 1709 states have call predecessors, (8644), 1686 states have return successors, (9376), 8485 states have call predecessors, (9376), 8640 states have call successors, (9376) [2021-11-23 02:49:08,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27777 states to 27777 states and 41237 transitions. [2021-11-23 02:49:08,605 INFO L78 Accepts]: Start accepts. Automaton has 27777 states and 41237 transitions. Word has length 501 [2021-11-23 02:49:08,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:49:08,606 INFO L470 AbstractCegarLoop]: Abstraction has 27777 states and 41237 transitions. [2021-11-23 02:49:08,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:49:08,606 INFO L276 IsEmpty]: Start isEmpty. Operand 27777 states and 41237 transitions. [2021-11-23 02:49:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2021-11-23 02:49:08,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:49:08,619 INFO L514 BasicCegarLoop]: trace histogram [45, 39, 39, 39, 39, 39, 39, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:49:08,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 02:49:08,619 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:49:08,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:49:08,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1505762393, now seen corresponding path program 1 times [2021-11-23 02:49:08,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:49:08,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797577437] [2021-11-23 02:49:08,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:08,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:49:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 6470 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6456 trivial. 0 not checked. [2021-11-23 02:49:08,890 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:49:08,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797577437] [2021-11-23 02:49:08,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797577437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:49:08,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:49:08,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:49:08,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153135605] [2021-11-23 02:49:08,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:49:08,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:49:08,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:49:08,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:49:08,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:49:08,894 INFO L87 Difference]: Start difference. First operand 27777 states and 41237 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-23 02:49:13,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:15,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:18,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:49:18,992 INFO L93 Difference]: Finished difference Result 65250 states and 96741 transitions. [2021-11-23 02:49:18,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:49:18,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 500 [2021-11-23 02:49:18,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:49:19,139 INFO L225 Difference]: With dead ends: 65250 [2021-11-23 02:49:19,139 INFO L226 Difference]: Without dead ends: 37976 [2021-11-23 02:49:19,368 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:49:19,369 INFO L933 BasicCegarLoop]: 4148 mSDtfsCounter, 2288 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 6307 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:49:19,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2288 Valid, 6307 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 929 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2021-11-23 02:49:19,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37976 states. [2021-11-23 02:49:21,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37976 to 37897. [2021-11-23 02:49:21,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37897 states, 23775 states have (on average 1.3281598317560463) internal successors, (31577), 24166 states have internal predecessors, (31577), 11776 states have call successors, (11776), 2374 states have call predecessors, (11776), 2343 states have return successors, (12751), 11562 states have call predecessors, (12751), 11772 states have call successors, (12751) [2021-11-23 02:49:21,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37897 states to 37897 states and 56104 transitions. [2021-11-23 02:49:21,601 INFO L78 Accepts]: Start accepts. Automaton has 37897 states and 56104 transitions. Word has length 500 [2021-11-23 02:49:21,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:49:21,602 INFO L470 AbstractCegarLoop]: Abstraction has 37897 states and 56104 transitions. [2021-11-23 02:49:21,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-23 02:49:21,602 INFO L276 IsEmpty]: Start isEmpty. Operand 37897 states and 56104 transitions. [2021-11-23 02:49:21,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2021-11-23 02:49:21,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:49:21,611 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 11, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:49:21,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 02:49:21,612 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:49:21,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:49:21,612 INFO L85 PathProgramCache]: Analyzing trace with hash -790697916, now seen corresponding path program 1 times [2021-11-23 02:49:21,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:49:21,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729071155] [2021-11-23 02:49:21,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:21,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:49:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6487 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 6467 trivial. 0 not checked. [2021-11-23 02:49:22,166 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:49:22,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729071155] [2021-11-23 02:49:22,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729071155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:49:22,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:49:22,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:49:22,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520766283] [2021-11-23 02:49:22,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:49:22,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:49:22,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:49:22,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:49:22,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:49:22,169 INFO L87 Difference]: Start difference. First operand 37897 states and 56104 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-23 02:49:25,416 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:32,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:49:32,361 INFO L93 Difference]: Finished difference Result 72250 states and 109671 transitions. [2021-11-23 02:49:32,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:49:32,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 507 [2021-11-23 02:49:32,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:49:32,678 INFO L225 Difference]: With dead ends: 72250 [2021-11-23 02:49:32,678 INFO L226 Difference]: Without dead ends: 72246 [2021-11-23 02:49:32,705 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:49:32,705 INFO L933 BasicCegarLoop]: 2997 mSDtfsCounter, 2210 mSDsluCounter, 9038 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2211 SdHoareTripleChecker+Valid, 11032 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:49:32,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2211 Valid, 11032 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1377 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2021-11-23 02:49:32,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72246 states. [2021-11-23 02:49:37,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72246 to 72201. [2021-11-23 02:49:37,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72201 states, 45347 states have (on average 1.3308487882329592) internal successors, (60350), 46094 states have internal predecessors, (60350), 22469 states have call successors, (22469), 4516 states have call predecessors, (22469), 4382 states have return successors, (26805), 21906 states have call predecessors, (26805), 22461 states have call successors, (26805) [2021-11-23 02:49:37,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72201 states to 72201 states and 109624 transitions. [2021-11-23 02:49:37,923 INFO L78 Accepts]: Start accepts. Automaton has 72201 states and 109624 transitions. Word has length 507 [2021-11-23 02:49:37,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:49:37,924 INFO L470 AbstractCegarLoop]: Abstraction has 72201 states and 109624 transitions. [2021-11-23 02:49:37,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-23 02:49:37,924 INFO L276 IsEmpty]: Start isEmpty. Operand 72201 states and 109624 transitions. [2021-11-23 02:49:37,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2021-11-23 02:49:37,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:49:37,933 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 12, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:49:37,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 02:49:37,934 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:49:37,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:49:37,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1643576322, now seen corresponding path program 1 times [2021-11-23 02:49:37,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:49:37,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263445185] [2021-11-23 02:49:37,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:37,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:49:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6529 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 6507 trivial. 0 not checked. [2021-11-23 02:49:38,663 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:49:38,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263445185] [2021-11-23 02:49:38,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263445185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:49:38,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:49:38,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:49:38,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930150561] [2021-11-23 02:49:38,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:49:38,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:49:38,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:49:38,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:49:38,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:49:38,666 INFO L87 Difference]: Start difference. First operand 72201 states and 109624 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-23 02:49:41,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:48,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:49:48,483 INFO L93 Difference]: Finished difference Result 72211 states and 109631 transitions. [2021-11-23 02:49:48,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:49:48,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 512 [2021-11-23 02:49:48,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:49:48,802 INFO L225 Difference]: With dead ends: 72211 [2021-11-23 02:49:48,802 INFO L226 Difference]: Without dead ends: 71901 [2021-11-23 02:49:48,834 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:49:48,835 INFO L933 BasicCegarLoop]: 2336 mSDtfsCounter, 2000 mSDsluCounter, 6253 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2002 SdHoareTripleChecker+Valid, 7880 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:49:48,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2002 Valid, 7880 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1036 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-11-23 02:49:48,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71901 states.