./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-media-common-saa7146-saa7146_vv.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_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/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_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/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_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/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 ce86015a8790fe78c3fa1e0817dad1e3ce7732b16cd3bc300a77723095c4573b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:07:20,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:07:20,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:07:21,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:07:21,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:07:21,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:07:21,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:07:21,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:07:21,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:07:21,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:07:21,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:07:21,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:07:21,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:07:21,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:07:21,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:07:21,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:07:21,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:07:21,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:07:21,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:07:21,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:07:21,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:07:21,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:07:21,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:07:21,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:07:21,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:07:21,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:07:21,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:07:21,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:07:21,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:07:21,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:07:21,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:07:21,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:07:21,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:07:21,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:07:21,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:07:21,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:07:21,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:07:21,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:07:21,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:07:21,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:07:21,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:07:21,083 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:07:21,115 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:07:21,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:07:21,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:07:21,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:07:21,127 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:07:21,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:07:21,127 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:07:21,128 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:07:21,128 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:07:21,128 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:07:21,129 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:07:21,130 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:07:21,130 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:07:21,130 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:07:21,130 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:07:21,131 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:07:21,131 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:07:21,131 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:07:21,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:07:21,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:07:21,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:07:21,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:07:21,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:07:21,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:07:21,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:07:21,134 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:07:21,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:07:21,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:07:21,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:07:21,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:07:21,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:07:21,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:07:21,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:07:21,137 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:07:21,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:07:21,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:07:21,138 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:07:21,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:07:21,139 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_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce86015a8790fe78c3fa1e0817dad1e3ce7732b16cd3bc300a77723095c4573b [2021-11-23 02:07:21,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:07:21,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:07:21,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:07:21,470 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:07:21,470 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:07:21,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i [2021-11-23 02:07:21,553 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/bin/utaipan-EQgc7hIp5V/data/119eb2f05/0d7f0a01ddef46f8998b6dae53ae6f3b/FLAG9e330d917 [2021-11-23 02:07:22,619 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:07:22,620 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i [2021-11-23 02:07:22,701 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/bin/utaipan-EQgc7hIp5V/data/119eb2f05/0d7f0a01ddef46f8998b6dae53ae6f3b/FLAG9e330d917 [2021-11-23 02:07:22,898 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/bin/utaipan-EQgc7hIp5V/data/119eb2f05/0d7f0a01ddef46f8998b6dae53ae6f3b [2021-11-23 02:07:22,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:07:22,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:07:22,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:07:22,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:07:22,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:07:22,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:07:22" (1/1) ... [2021-11-23 02:07:22,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742b8293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:22, skipping insertion in model container [2021-11-23 02:07:22,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:07:22" (1/1) ... [2021-11-23 02:07:22,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:07:23,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:07:27,834 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_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i[509912,509925] [2021-11-23 02:07:27,839 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_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i[510081,510094] [2021-11-23 02:07:27,839 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_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i[510248,510261] [2021-11-23 02:07:27,840 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_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i[510416,510429] [2021-11-23 02:07:27,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:07:27,946 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:07:28,840 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_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i[509912,509925] [2021-11-23 02:07:28,840 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_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i[510081,510094] [2021-11-23 02:07:28,841 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_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i[510248,510261] [2021-11-23 02:07:28,841 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_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i[510416,510429] [2021-11-23 02:07:28,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:07:29,095 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:07:29,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:29 WrapperNode [2021-11-23 02:07:29,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:07:29,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:07:29,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:07:29,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:07:29,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:29" (1/1) ... [2021-11-23 02:07:29,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:29" (1/1) ... [2021-11-23 02:07:29,892 INFO L137 Inliner]: procedures = 487, calls = 6591, calls flagged for inlining = 235, calls inlined = 218, statements flattened = 12096 [2021-11-23 02:07:29,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:07:29,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:07:29,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:07:29,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:07:29,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:29" (1/1) ... [2021-11-23 02:07:29,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:29" (1/1) ... [2021-11-23 02:07:30,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:29" (1/1) ... [2021-11-23 02:07:30,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:29" (1/1) ... [2021-11-23 02:07:30,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:29" (1/1) ... [2021-11-23 02:07:30,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:29" (1/1) ... [2021-11-23 02:07:30,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:29" (1/1) ... [2021-11-23 02:07:30,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:07:30,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:07:30,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:07:30,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:07:30,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:29" (1/1) ... [2021-11-23 02:07:30,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:07:30,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:07:30,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:07:30,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a5ee0e6-850b-4dc9-be9a-9ea728a7df6c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:07:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_streamoff [2021-11-23 02:07:30,923 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_streamoff [2021-11-23 02:07:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure video_open [2021-11-23 02:07:30,923 INFO L138 BoogieDeclarations]: Found implementation of procedure video_open [2021-11-23 02:07:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure SAA7146_IER_DISABLE___0 [2021-11-23 02:07:30,924 INFO L138 BoogieDeclarations]: Found implementation of procedure SAA7146_IER_DISABLE___0 [2021-11-23 02:07:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_reqbufs [2021-11-23 02:07:30,924 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_reqbufs [2021-11-23 02:07:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:07:30,924 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:07:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_fmt_vid_cap [2021-11-23 02:07:30,925 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_fmt_vid_cap [2021-11-23 02:07:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:07:30,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:07:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_fmt_vid_cap [2021-11-23 02:07:30,925 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_fmt_vid_cap [2021-11-23 02:07:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_reqbufs [2021-11-23 02:07:30,926 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_reqbufs [2021-11-23 02:07:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_set_window [2021-11-23 02:07:30,926 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_set_window [2021-11-23 02:07:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:07:30,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:07:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2021-11-23 02:07:30,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2021-11-23 02:07:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_res_get [2021-11-23 02:07:30,927 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_res_get [2021-11-23 02:07:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure video_end [2021-11-23 02:07:30,928 INFO L138 BoogieDeclarations]: Found implementation of procedure video_end [2021-11-23 02:07:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure arch_spin_is_locked [2021-11-23 02:07:30,928 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_spin_is_locked [2021-11-23 02:07:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_to_dma [2021-11-23 02:07:30,928 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_to_dma [2021-11-23 02:07:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vid_cap [2021-11-23 02:07:30,929 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vid_cap [2021-11-23 02:07:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_saa7146_vv_cleanup_module_9_2 [2021-11-23 02:07:30,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_saa7146_vv_cleanup_module_9_2 [2021-11-23 02:07:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_buffer_queue [2021-11-23 02:07:30,929 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_buffer_queue [2021-11-23 02:07:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure video_close [2021-11-23 02:07:30,930 INFO L138 BoogieDeclarations]: Found implementation of procedure video_close [2021-11-23 02:07:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_open [2021-11-23 02:07:30,930 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_open [2021-11-23 02:07:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_59 [2021-11-23 02:07:30,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_59 [2021-11-23 02:07:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_std [2021-11-23 02:07:30,933 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_std [2021-11-23 02:07:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_pgtable_alloc [2021-11-23 02:07:30,933 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_pgtable_alloc [2021-11-23 02:07:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_54 [2021-11-23 02:07:30,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_54 [2021-11-23 02:07:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 02:07:30,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 02:07:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2021-11-23 02:07:30,934 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2021-11-23 02:07:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 02:07:30,935 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 02:07:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_irq_done [2021-11-23 02:07:30,935 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_irq_done [2021-11-23 02:07:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer [2021-11-23 02:07:30,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer [2021-11-23 02:07:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-23 02:07:30,936 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-23 02:07:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:07:30,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:07:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querybuf [2021-11-23 02:07:30,936 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querybuf [2021-11-23 02:07:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 02:07:30,938 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 02:07:30,938 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2021-11-23 02:07:30,938 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2021-11-23 02:07:30,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:07:30,938 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vid_overlay [2021-11-23 02:07:30,938 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vid_overlay [2021-11-23 02:07:30,938 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_dqbuf [2021-11-23 02:07:30,939 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_dqbuf [2021-11-23 02:07:30,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_60 [2021-11-23 02:07:30,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_60 [2021-11-23 02:07:30,940 INFO L130 BoogieDeclarations]: Found specification of procedure video_irq_done [2021-11-23 02:07:30,940 INFO L138 BoogieDeclarations]: Found implementation of procedure video_irq_done [2021-11-23 02:07:30,940 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-23 02:07:30,940 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-23 02:07:30,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_slock_of_saa7146_dev [2021-11-23 02:07:30,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_slock_of_saa7146_dev [2021-11-23 02:07:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_fmt_vid_overlay [2021-11-23 02:07:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_fmt_vid_overlay [2021-11-23 02:07:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2021-11-23 02:07:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2021-11-23 02:07:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-23 02:07:30,943 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-23 02:07:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 02:07:30,943 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 02:07:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure sort_and_eliminate [2021-11-23 02:07:30,944 INFO L138 BoogieDeclarations]: Found implementation of procedure sort_and_eliminate [2021-11-23 02:07:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2021-11-23 02:07:30,944 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2021-11-23 02:07:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:07:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_qbuf [2021-11-23 02:07:30,944 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_qbuf [2021-11-23 02:07:30,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 02:07:30,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 02:07:30,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:07:30,945 INFO L130 BoogieDeclarations]: Found specification of procedure fops_read [2021-11-23 02:07:30,946 INFO L138 BoogieDeclarations]: Found implementation of procedure fops_read [2021-11-23 02:07:30,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 02:07:30,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 02:07:30,947 INFO L130 BoogieDeclarations]: Found specification of procedure release_all_pagetables [2021-11-23 02:07:30,950 INFO L138 BoogieDeclarations]: Found implementation of procedure release_all_pagetables [2021-11-23 02:07:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_buffer_finish [2021-11-23 02:07:30,950 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_buffer_finish [2021-11-23 02:07:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_set_output_format [2021-11-23 02:07:30,951 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_set_output_format [2021-11-23 02:07:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure video_read [2021-11-23 02:07:30,952 INFO L138 BoogieDeclarations]: Found implementation of procedure video_read [2021-11-23 02:07:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 02:07:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 02:07:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_stop [2021-11-23 02:07:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_stop [2021-11-23 02:07:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_res_free [2021-11-23 02:07:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_res_free [2021-11-23 02:07:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2021-11-23 02:07:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_subscribe_event [2021-11-23 02:07:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_fbuf [2021-11-23 02:07:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_fbuf [2021-11-23 02:07:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:07:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:07:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_pgtable_free [2021-11-23 02:07:30,962 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_pgtable_free [2021-11-23 02:07:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:07:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 02:07:30,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 02:07:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-23 02:07:30,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-23 02:07:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-23 02:07:30,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-23 02:07:30,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-23 02:07:30,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-23 02:07:30,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-23 02:07:30,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-23 02:07:30,963 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_queue_sg_init [2021-11-23 02:07:30,963 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_queue_sg_init [2021-11-23 02:07:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_pgtable_build_single [2021-11-23 02:07:30,964 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_pgtable_build_single [2021-11-23 02:07:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:07:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_s_ctrl [2021-11-23 02:07:30,964 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_s_ctrl [2021-11-23 02:07:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:07:30,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:07:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:07:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:07:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:07:30,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:07:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_queue [2021-11-23 02:07:30,965 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_queue [2021-11-23 02:07:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_qbuf [2021-11-23 02:07:30,966 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_qbuf [2021-11-23 02:07:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-23 02:07:30,966 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-23 02:07:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_streamon [2021-11-23 02:07:30,966 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_streamon [2021-11-23 02:07:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-23 02:07:30,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-23 02:07:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_iolock [2021-11-23 02:07:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_iolock [2021-11-23 02:07:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure video_init [2021-11-23 02:07:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure video_init [2021-11-23 02:07:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_overlay [2021-11-23 02:07:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_overlay [2021-11-23 02:07:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vbi_cap [2021-11-23 02:07:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vbi_cap [2021-11-23 02:07:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-23 02:07:30,968 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-23 02:07:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-23 02:07:30,968 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-23 02:07:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2021-11-23 02:07:30,968 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_unsubscribe [2021-11-23 02:07:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure fops_mmap [2021-11-23 02:07:30,969 INFO L138 BoogieDeclarations]: Found implementation of procedure fops_mmap [2021-11-23 02:07:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:07:30,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:07:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_disable_clipping [2021-11-23 02:07:30,969 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_disable_clipping [2021-11-23 02:07:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_parm [2021-11-23 02:07:30,969 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_parm [2021-11-23 02:07:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:07:30,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:07:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:07:30,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:07:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_stop_preview [2021-11-23 02:07:30,970 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_stop_preview [2021-11-23 02:07:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-23 02:07:30,971 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-23 02:07:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_int_slock_of_saa7146_dev [2021-11-23 02:07:30,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_int_slock_of_saa7146_dev [2021-11-23 02:07:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_slock_of_saa7146_dev [2021-11-23 02:07:30,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_slock_of_saa7146_dev [2021-11-23 02:07:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-23 02:07:30,971 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-23 02:07:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure video_begin [2021-11-23 02:07:30,972 INFO L138 BoogieDeclarations]: Found implementation of procedure video_begin [2021-11-23 02:07:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:07:30,972 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:07:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure fops_open [2021-11-23 02:07:30,972 INFO L138 BoogieDeclarations]: Found implementation of procedure fops_open [2021-11-23 02:07:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_init [2021-11-23 02:07:30,973 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_init [2021-11-23 02:07:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:07:30,973 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:07:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fbuf [2021-11-23 02:07:30,973 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fbuf [2021-11-23 02:07:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-23 02:07:30,973 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-23 02:07:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-23 02:07:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-23 02:07:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:07:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:07:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:07:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:07:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_release [2021-11-23 02:07:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_release [2021-11-23 02:07:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-23 02:07:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-23 02:07:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:07:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2021-11-23 02:07:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2021-11-23 02:07:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 02:07:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 02:07:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-23 02:07:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-23 02:07:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 02:07:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 02:07:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 02:07:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 02:07:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_dqbuf [2021-11-23 02:07:30,981 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_dqbuf [2021-11-23 02:07:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 02:07:30,981 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 02:07:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querycap [2021-11-23 02:07:30,982 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querycap [2021-11-23 02:07:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_start_preview [2021-11-23 02:07:30,982 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_start_preview [2021-11-23 02:07:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_61 [2021-11-23 02:07:30,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_61 [2021-11-23 02:07:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure fops_release [2021-11-23 02:07:30,984 INFO L138 BoogieDeclarations]: Found implementation of procedure fops_release [2021-11-23 02:07:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_querybuf [2021-11-23 02:07:30,984 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_querybuf [2021-11-23 02:07:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure SAA7146_IER_ENABLE___0 [2021-11-23 02:07:30,984 INFO L138 BoogieDeclarations]: Found implementation of procedure SAA7146_IER_ENABLE___0 [2021-11-23 02:07:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:07:30,984 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:07:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_write_out_dma [2021-11-23 02:07:30,985 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_write_out_dma [2021-11-23 02:07:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:07:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:07:30,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:07:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_format_by_fourcc [2021-11-23 02:07:30,985 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_format_by_fourcc [2021-11-23 02:07:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_dma_free [2021-11-23 02:07:30,986 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_dma_free [2021-11-23 02:07:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_buffer_next [2021-11-23 02:07:30,986 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_buffer_next [2021-11-23 02:07:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure program_capture_engine [2021-11-23 02:07:30,986 INFO L138 BoogieDeclarations]: Found implementation of procedure program_capture_engine [2021-11-23 02:07:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_close [2021-11-23 02:07:30,986 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_close [2021-11-23 02:07:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-23 02:07:30,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-23 02:07:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_setup [2021-11-23 02:07:30,987 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_setup [2021-11-23 02:07:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 02:07:30,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 02:07:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-23 02:07:30,987 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-23 02:07:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure fops_write [2021-11-23 02:07:30,988 INFO L138 BoogieDeclarations]: Found implementation of procedure fops_write [2021-11-23 02:07:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_read [2021-11-23 02:07:30,988 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_read [2021-11-23 02:07:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 02:07:30,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 02:07:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure fops_poll [2021-11-23 02:07:30,988 INFO L138 BoogieDeclarations]: Found implementation of procedure fops_poll [2021-11-23 02:07:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-23 02:07:30,989 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-23 02:07:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:07:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 02:07:30,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 02:07:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 02:07:30,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 02:07:32,536 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:07:32,540 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:07:32,948 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:08:48,063 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 02:08:48,200 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:08:51,176 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:08:51,176 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 02:08:51,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:08:51 BoogieIcfgContainer [2021-11-23 02:08:51,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:08:51,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:08:51,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:08:51,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:08:51,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:07:22" (1/3) ... [2021-11-23 02:08:51,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11685ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:08:51, skipping insertion in model container [2021-11-23 02:08:51,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:29" (2/3) ... [2021-11-23 02:08:51,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11685ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:08:51, skipping insertion in model container [2021-11-23 02:08:51,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:08:51" (3/3) ... [2021-11-23 02:08:51,192 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i [2021-11-23 02:08:51,199 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:08:51,199 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 02:08:51,284 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:08:51,297 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 02:08:51,297 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 02:08:51,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 2523 states, 1592 states have (on average 1.329145728643216) internal successors, (2116), 1609 states have internal predecessors, (2116), 792 states have call successors, (792), 137 states have call predecessors, (792), 136 states have return successors, (783), 776 states have call predecessors, (783), 783 states have call successors, (783) [2021-11-23 02:08:51,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2021-11-23 02:08:51,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:51,420 INFO L514 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:51,421 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:08:51,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:51,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1225271138, now seen corresponding path program 1 times [2021-11-23 02:08:51,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:51,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109992663] [2021-11-23 02:08:51,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:51,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2021-11-23 02:08:52,641 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:52,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109992663] [2021-11-23 02:08:52,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109992663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:52,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:08:52,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:08:52,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347842986] [2021-11-23 02:08:52,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:52,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:08:52,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:08:52,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:08:52,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:08:52,702 INFO L87 Difference]: Start difference. First operand has 2523 states, 1592 states have (on average 1.329145728643216) internal successors, (2116), 1609 states have internal predecessors, (2116), 792 states have call successors, (792), 137 states have call predecessors, (792), 136 states have return successors, (783), 776 states have call predecessors, (783), 783 states have call successors, (783) Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-23 02:08:57,898 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 02:09:00,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:09:02,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:09:05,166 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:09:08,082 WARN L534 Checker$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 02:09:10,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:13,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:09:15,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:17,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:19,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:09:21,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:09:23,847 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:09:26,259 WARN L534 Checker$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 02:09:28,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:30,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:09:32,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:34,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:09:36,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:09:38,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:09:40,902 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 02:09:40,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:40,987 INFO L93 Difference]: Finished difference Result 7174 states and 10688 transitions. [2021-11-23 02:09:40,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:09:40,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 445 [2021-11-23 02:09:40,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:41,071 INFO L225 Difference]: With dead ends: 7174 [2021-11-23 02:09:41,071 INFO L226 Difference]: Without dead ends: 4725 [2021-11-23 02:09:41,099 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 02:09:41,102 INFO L933 BasicCegarLoop]: 3864 mSDtfsCounter, 3227 mSDsluCounter, 3613 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 15 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3242 SdHoareTripleChecker+Valid, 6976 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:41,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3242 Valid, 6976 Invalid, 1122 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 1089 Invalid, 18 Unknown, 0 Unchecked, 47.7s Time] [2021-11-23 02:09:41,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4725 states. [2021-11-23 02:09:41,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4725 to 4714. [2021-11-23 02:09:41,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4714 states, 2997 states have (on average 1.3239906573239906) internal successors, (3968), 3031 states have internal predecessors, (3968), 1450 states have call successors, (1450), 265 states have call predecessors, (1450), 264 states have return successors, (1459), 1431 states have call predecessors, (1459), 1446 states have call successors, (1459) [2021-11-23 02:09:41,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4714 states to 4714 states and 6877 transitions. [2021-11-23 02:09:41,632 INFO L78 Accepts]: Start accepts. Automaton has 4714 states and 6877 transitions. Word has length 445 [2021-11-23 02:09:41,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:41,638 INFO L470 AbstractCegarLoop]: Abstraction has 4714 states and 6877 transitions. [2021-11-23 02:09:41,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-23 02:09:41,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4714 states and 6877 transitions. [2021-11-23 02:09:41,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2021-11-23 02:09:41,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:41,662 INFO L514 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:41,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:09:41,662 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:09:41,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:41,664 INFO L85 PathProgramCache]: Analyzing trace with hash -307948962, now seen corresponding path program 1 times [2021-11-23 02:09:41,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:09:41,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275271056] [2021-11-23 02:09:41,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:41,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:42,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2021-11-23 02:09:42,653 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:09:42,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275271056] [2021-11-23 02:09:42,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275271056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:42,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:42,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:09:42,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817382716] [2021-11-23 02:09:42,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:42,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:09:42,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:09:42,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:09:42,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:09:42,658 INFO L87 Difference]: Start difference. First operand 4714 states and 6877 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-23 02:09:45,019 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 02:09:47,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:49,642 WARN L534 Checker$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 02:09:52,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:09:54,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:09:57,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:09:59,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:10:00,900 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:10:03,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:10:05,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:07,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:10,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:13,439 WARN L534 Checker$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 02:10:15,640 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:17,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:10:19,936 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:22,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:10:24,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:10:26,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:10:28,169 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 02:10:28,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:28,281 INFO L93 Difference]: Finished difference Result 13755 states and 20191 transitions. [2021-11-23 02:10:28,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:10:28,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 451 [2021-11-23 02:10:28,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:28,389 INFO L225 Difference]: With dead ends: 13755 [2021-11-23 02:10:28,389 INFO L226 Difference]: Without dead ends: 9128 [2021-11-23 02:10:28,429 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 02:10:28,431 INFO L933 BasicCegarLoop]: 3892 mSDtfsCounter, 3269 mSDsluCounter, 3653 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 3 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3287 SdHoareTripleChecker+Valid, 7041 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:28,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3287 Valid, 7041 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1044 Invalid, 17 Unknown, 0 Unchecked, 45.2s Time] [2021-11-23 02:10:28,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9128 states. [2021-11-23 02:10:29,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9128 to 9081. [2021-11-23 02:10:29,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9081 states, 5787 states have (on average 1.3269396924140315) internal successors, (7679), 5854 states have internal predecessors, (7679), 2775 states have call successors, (2775), 521 states have call predecessors, (2775), 516 states have return successors, (2934), 2729 states have call predecessors, (2934), 2771 states have call successors, (2934) [2021-11-23 02:10:29,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9081 states to 9081 states and 13388 transitions. [2021-11-23 02:10:29,191 INFO L78 Accepts]: Start accepts. Automaton has 9081 states and 13388 transitions. Word has length 451 [2021-11-23 02:10:29,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:29,193 INFO L470 AbstractCegarLoop]: Abstraction has 9081 states and 13388 transitions. [2021-11-23 02:10:29,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-23 02:10:29,195 INFO L276 IsEmpty]: Start isEmpty. Operand 9081 states and 13388 transitions. [2021-11-23 02:10:29,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2021-11-23 02:10:29,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:29,214 INFO L514 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:29,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:10:29,215 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 02:10:29,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:29,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1267304541, now seen corresponding path program 1 times [2021-11-23 02:10:29,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:29,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963334770] [2021-11-23 02:10:29,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:29,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:29,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2021-11-23 02:10:29,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:29,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963334770] [2021-11-23 02:10:29,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963334770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:29,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:29,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:10:29,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633608743] [2021-11-23 02:10:29,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:29,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:10:29,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:29,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:10:29,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:10:29,844 INFO L87 Difference]: Start difference. First operand 9081 states and 13388 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-23 02:10:32,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:33,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:35,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:38,173 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:10:43,100 WARN L534 Checker$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 02:10:45,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:47,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:10:50,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:10:52,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:10:54,931 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:57,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:00,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:02,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:04,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:06,409 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:11:08,499 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:10,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:11:12,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:11:14,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:11:16,696 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 02:11:16,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:11:16,795 INFO L93 Difference]: Finished difference Result 22187 states and 32650 transitions. [2021-11-23 02:11:16,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:11:16,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 463 [2021-11-23 02:11:16,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:11:16,948 INFO L225 Difference]: With dead ends: 22187 [2021-11-23 02:11:16,948 INFO L226 Difference]: Without dead ends: 13193 [2021-11-23 02:11:17,025 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 02:11:17,026 INFO L933 BasicCegarLoop]: 3819 mSDtfsCounter, 3162 mSDsluCounter, 3585 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 13 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3174 SdHoareTripleChecker+Valid, 6901 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:11:17,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3174 Valid, 6901 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1098 Invalid, 15 Unknown, 0 Unchecked, 46.5s Time] [2021-11-23 02:11:17,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13193 states. [2021-11-23 02:11:17,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13193 to 13158. [2021-11-23 02:11:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13158 states, 8440 states have (on average 1.3270142180094786) internal successors, (11200), 8540 states have internal predecessors, (11200), 3940 states have call successors, (3940), 782 states have call predecessors, (3940), 775 states have return successors, (4171), 3867 states have call predecessors, (4171), 3936 states have call successors, (4171) [2021-11-23 02:11:18,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13158 states to 13158 states and 19311 transitions. [2021-11-23 02:11:18,033 INFO L78 Accepts]: Start accepts. Automaton has 13158 states and 19311 transitions. Word has length 463 [2021-11-23 02:11:18,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:11:18,036 INFO L470 AbstractCegarLoop]: Abstraction has 13158 states and 19311 transitions. [2021-11-23 02:11:18,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-23 02:11:18,036 INFO L276 IsEmpty]: Start isEmpty. Operand 13158 states and 19311 transitions. [2021-11-23 02:11:18,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2021-11-23 02:11:18,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:18,047 INFO L514 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:18,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:11:18,048 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 02:11:18,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:18,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1179195941, now seen corresponding path program 1 times [2021-11-23 02:11:18,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:11:18,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658524703] [2021-11-23 02:11:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:18,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:11:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2021-11-23 02:11:18,666 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:11:18,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658524703] [2021-11-23 02:11:18,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658524703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:11:18,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:11:18,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:11:18,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611052166] [2021-11-23 02:11:18,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:11:18,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:11:18,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:11:18,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:11:18,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:11:18,670 INFO L87 Difference]: Start difference. First operand 13158 states and 19311 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-23 02:11:24,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:11:26,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:11:33,534 WARN L534 Checker$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 02:11:36,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:11:38,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:11:40,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:11:42,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:44,900 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:47,657 WARN L534 Checker$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 02:11:49,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:51,890 WARN L534 Checker$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 02:11:54,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:11:56,261 WARN L534 Checker$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 02:11:58,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:12:00,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:12:02,436 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:12:04,510 WARN L534 Checker$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 02:12:06,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:12:06,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:06,635 INFO L93 Difference]: Finished difference Result 33719 states and 49394 transitions. [2021-11-23 02:12:06,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:12:06,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 470 [2021-11-23 02:12:06,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:06,763 INFO L225 Difference]: With dead ends: 33719 [2021-11-23 02:12:06,763 INFO L226 Difference]: Without dead ends: 20648 [2021-11-23 02:12:06,835 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 02:12:06,836 INFO L933 BasicCegarLoop]: 4293 mSDtfsCounter, 3183 mSDsluCounter, 3585 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 13 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3196 SdHoareTripleChecker+Valid, 7376 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:06,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3196 Valid, 7376 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1202 Invalid, 16 Unknown, 0 Unchecked, 47.4s Time] [2021-11-23 02:12:06,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20648 states. [2021-11-23 02:12:08,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20648 to 20612. [2021-11-23 02:12:08,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20612 states, 13278 states have (on average 1.3268564542852839) internal successors, (17618), 13441 states have internal predecessors, (17618), 6078 states have call successors, (6078), 1264 states have call predecessors, (6078), 1253 states have return successors, (6413), 5954 states have call predecessors, (6413), 6074 states have call successors, (6413) [2021-11-23 02:12:08,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20612 states to 20612 states and 30109 transitions. [2021-11-23 02:12:08,540 INFO L78 Accepts]: Start accepts. Automaton has 20612 states and 30109 transitions. Word has length 470 [2021-11-23 02:12:08,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:08,541 INFO L470 AbstractCegarLoop]: Abstraction has 20612 states and 30109 transitions. [2021-11-23 02:12:08,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-23 02:12:08,542 INFO L276 IsEmpty]: Start isEmpty. Operand 20612 states and 30109 transitions. [2021-11-23 02:12:08,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-11-23 02:12:08,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:08,553 INFO L514 BasicCegarLoop]: trace histogram [46, 43, 43, 43, 43, 43, 43, 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] [2021-11-23 02:12:08,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:12:08,553 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:12:08,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:08,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1266386324, now seen corresponding path program 1 times [2021-11-23 02:12:08,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:08,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400240019] [2021-11-23 02:12:08,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:08,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 7492 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7492 trivial. 0 not checked. [2021-11-23 02:12:09,674 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:09,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400240019] [2021-11-23 02:12:09,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400240019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:09,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:09,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:12:09,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124333214] [2021-11-23 02:12:09,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:09,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:12:09,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:09,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:12:09,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:12:09,677 INFO L87 Difference]: Start difference. First operand 20612 states and 30109 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-23 02:12:12,786 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:18,393 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:19,544 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:21,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:12:23,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:12:26,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:12:29,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:12:32,866 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:12:36,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:12:38,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:40,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:44,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:47,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:12:50,541 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:52,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:54,595 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:55,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:58,018 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:00,590 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:13:02,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:04,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:13:06,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:13:08,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:13:10,909 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 02:13:11,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:11,045 INFO L93 Difference]: Finished difference Result 37394 states and 54685 transitions. [2021-11-23 02:13:11,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:13:11,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 479 [2021-11-23 02:13:11,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:11,287 INFO L225 Difference]: With dead ends: 37394 [2021-11-23 02:13:11,288 INFO L226 Difference]: Without dead ends: 37392 [2021-11-23 02:13:11,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:13:11,311 INFO L933 BasicCegarLoop]: 3863 mSDtfsCounter, 3347 mSDsluCounter, 12288 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 2 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3369 SdHoareTripleChecker+Valid, 14573 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:11,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3369 Valid, 14573 Invalid, 2141 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2120 Invalid, 19 Unknown, 0 Unchecked, 60.4s Time] [2021-11-23 02:13:11,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37392 states. [2021-11-23 02:13:13,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37392 to 37373. [2021-11-23 02:13:13,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37373 states, 24050 states have (on average 1.328108108108108) internal successors, (31941), 24350 states have internal predecessors, (31941), 11044 states have call successors, (11044), 2296 states have call predecessors, (11044), 2276 states have return successors, (11680), 10814 states have call predecessors, (11680), 11036 states have call successors, (11680) [2021-11-23 02:13:14,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37373 states to 37373 states and 54665 transitions. [2021-11-23 02:13:14,248 INFO L78 Accepts]: Start accepts. Automaton has 37373 states and 54665 transitions. Word has length 479 [2021-11-23 02:13:14,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:13:14,249 INFO L470 AbstractCegarLoop]: Abstraction has 37373 states and 54665 transitions. [2021-11-23 02:13:14,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-23 02:13:14,250 INFO L276 IsEmpty]: Start isEmpty. Operand 37373 states and 54665 transitions. [2021-11-23 02:13:14,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2021-11-23 02:13:14,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:14,262 INFO L514 BasicCegarLoop]: trace histogram [46, 43, 43, 43, 43, 43, 43, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:13:14,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:13:14,262 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 02:13:14,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:14,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1903206357, now seen corresponding path program 1 times [2021-11-23 02:13:14,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:14,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094920484] [2021-11-23 02:13:14,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:14,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:15,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7495 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7493 trivial. 0 not checked. [2021-11-23 02:13:15,160 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:15,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094920484] [2021-11-23 02:13:15,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094920484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:13:15,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:13:15,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:13:15,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117435656] [2021-11-23 02:13:15,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:13:15,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:13:15,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:13:15,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:13:15,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:13:15,163 INFO L87 Difference]: Start difference. First operand 37373 states and 54665 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-23 02:13:17,012 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 02:13:21,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:24,565 WARN L534 Checker$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 02:13:27,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:13:29,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:13:31,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:13:34,471 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:13:36,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:13:38,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:13:41,255 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:13:45,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:13:46,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:13:49,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:13:51,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:13:53,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:55,971 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:00,971 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:14:03,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:05,906 WARN L534 Checker$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 02:14:08,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:14:10,538 WARN L534 Checker$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 02:14:12,611 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:14:14,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:14:16,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:14:18,762 WARN L534 Checker$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 02:14:18,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:18,913 INFO L93 Difference]: Finished difference Result 38228 states and 55878 transitions. [2021-11-23 02:14:18,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:14:18,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 485 [2021-11-23 02:14:18,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:19,119 INFO L225 Difference]: With dead ends: 38228 [2021-11-23 02:14:19,120 INFO L226 Difference]: Without dead ends: 38226 [2021-11-23 02:14:19,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:14:19,139 INFO L933 BasicCegarLoop]: 3907 mSDtfsCounter, 3322 mSDsluCounter, 12402 mSDsCounter, 0 mSdLazyCounter, 2168 mSolverCounterSat, 2 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3342 SdHoareTripleChecker+Valid, 14699 SdHoareTripleChecker+Invalid, 2191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2168 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:19,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3342 Valid, 14699 Invalid, 2191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2168 Invalid, 21 Unknown, 0 Unchecked, 62.8s Time] [2021-11-23 02:14:19,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38226 states. [2021-11-23 02:14:20,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38226 to 38209. [2021-11-23 02:14:20,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38209 states, 24657 states have (on average 1.3291154641683902) internal successors, (32772), 24967 states have internal predecessors, (32772), 11220 states have call successors, (11220), 2343 states have call predecessors, (11220), 2329 states have return successors, (11870), 10986 states have call predecessors, (11870), 11212 states have call successors, (11870) [2021-11-23 02:14:21,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38209 states to 38209 states and 55862 transitions. [2021-11-23 02:14:21,478 INFO L78 Accepts]: Start accepts. Automaton has 38209 states and 55862 transitions. Word has length 485 [2021-11-23 02:14:21,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:21,480 INFO L470 AbstractCegarLoop]: Abstraction has 38209 states and 55862 transitions. [2021-11-23 02:14:21,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-23 02:14:21,481 INFO L276 IsEmpty]: Start isEmpty. Operand 38209 states and 55862 transitions. [2021-11-23 02:14:21,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2021-11-23 02:14:21,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:21,493 INFO L514 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 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] [2021-11-23 02:14:21,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:14:21,493 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:14:21,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:21,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1848317114, now seen corresponding path program 1 times [2021-11-23 02:14:21,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:21,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937235519] [2021-11-23 02:14:21,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:21,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 7312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7312 trivial. 0 not checked. [2021-11-23 02:14:22,180 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:22,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937235519] [2021-11-23 02:14:22,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937235519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:22,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:22,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:14:22,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984418838] [2021-11-23 02:14:22,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:22,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:14:22,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:22,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:14:22,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:22,183 INFO L87 Difference]: Start difference. First operand 38209 states and 55862 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-23 02:14:24,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:26,820 WARN L534 Checker$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 02:14:28,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:14:31,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:14:33,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:14:34,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:14:36,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:40,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:14:42,529 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:14:44,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:14:48,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:50,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:52,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:14:54,981 WARN L534 Checker$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 02:14:56,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:58,404 WARN L534 Checker$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 02:15:01,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:15:03,424 WARN L534 Checker$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 02:15:05,488 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:15:07,529 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:15:09,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:15:11,623 WARN L534 Checker$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 02:15:11,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:15:11,753 INFO L93 Difference]: Finished difference Result 107922 states and 157849 transitions. [2021-11-23 02:15:11,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:15:11,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 487 [2021-11-23 02:15:11,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:15:12,292 INFO L225 Difference]: With dead ends: 107922 [2021-11-23 02:15:12,292 INFO L226 Difference]: Without dead ends: 69800 [2021-11-23 02:15:12,427 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 02:15:12,433 INFO L933 BasicCegarLoop]: 4091 mSDtfsCounter, 3130 mSDsluCounter, 3613 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 7 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3144 SdHoareTripleChecker+Valid, 7195 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:15:12,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3144 Valid, 7195 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1116 Invalid, 17 Unknown, 0 Unchecked, 47.9s Time] [2021-11-23 02:15:12,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69800 states. [2021-11-23 02:15:15,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69800 to 69631. [2021-11-23 02:15:15,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69631 states, 44753 states have (on average 1.3258552499273792) internal successors, (59336), 45349 states have internal predecessors, (59336), 20584 states have call successors, (20584), 4321 states have call predecessors, (20584), 4291 states have return successors, (21871), 20110 states have call predecessors, (21871), 20576 states have call successors, (21871) [2021-11-23 02:15:16,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69631 states to 69631 states and 101791 transitions. [2021-11-23 02:15:16,040 INFO L78 Accepts]: Start accepts. Automaton has 69631 states and 101791 transitions. Word has length 487 [2021-11-23 02:15:16,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:15:16,041 INFO L470 AbstractCegarLoop]: Abstraction has 69631 states and 101791 transitions. [2021-11-23 02:15:16,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-23 02:15:16,042 INFO L276 IsEmpty]: Start isEmpty. Operand 69631 states and 101791 transitions. [2021-11-23 02:15:16,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2021-11-23 02:15:16,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:15:16,052 INFO L514 BasicCegarLoop]: trace histogram [46, 43, 43, 43, 43, 43, 43, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:15:16,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:15:16,053 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 02:15:16,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:15:16,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1507997, now seen corresponding path program 1 times [2021-11-23 02:15:16,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:15:16,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877955464] [2021-11-23 02:15:16,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:15:16,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:15:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:15:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7501 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7497 trivial. 0 not checked. [2021-11-23 02:15:16,978 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:15:16,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877955464] [2021-11-23 02:15:16,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877955464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:15:16,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:15:16,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:15:16,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960247476] [2021-11-23 02:15:16,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:15:16,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:15:16,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:15:16,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:15:16,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:15:16,981 INFO L87 Difference]: Start difference. First operand 69631 states and 101791 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 02:15:20,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:26,228 WARN L534 Checker$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 02:15:28,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:15:30,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:15:33,011 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:15:35,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:15:39,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:15:42,570 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:15:46,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:15:49,217 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:15:51,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:15:53,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:15:56,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:58,892 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:16:04,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:16:06,737 WARN L534 Checker$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 02:16:10,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:16:12,453 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:16:14,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:16:16,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:16:18,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:16:20,703 WARN L534 Checker$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 02:16:21,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:21,887 INFO L93 Difference]: Finished difference Result 134081 states and 198407 transitions. [2021-11-23 02:16:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:16:21,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 490 [2021-11-23 02:16:21,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:22,985 INFO L225 Difference]: With dead ends: 134081 [2021-11-23 02:16:22,985 INFO L226 Difference]: Without dead ends: 134079 [2021-11-23 02:16:23,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:16:23,065 INFO L933 BasicCegarLoop]: 3917 mSDtfsCounter, 3316 mSDsluCounter, 12323 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 3 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3338 SdHoareTripleChecker+Valid, 14653 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:23,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3338 Valid, 14653 Invalid, 2167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2143 Invalid, 21 Unknown, 0 Unchecked, 61.6s Time] [2021-11-23 02:16:23,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134079 states. [2021-11-23 02:16:30,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134079 to 133994. [2021-11-23 02:16:30,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133994 states, 86473 states have (on average 1.3314329328229622) internal successors, (115133), 87776 states have internal predecessors, (115133), 39213 states have call successors, (39213), 8483 states have call predecessors, (39213), 8305 states have return successors, (43976), 37983 states have call predecessors, (43976), 39197 states have call successors, (43976) [2021-11-23 02:16:31,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133994 states to 133994 states and 198322 transitions. [2021-11-23 02:16:31,787 INFO L78 Accepts]: Start accepts. Automaton has 133994 states and 198322 transitions. Word has length 490 [2021-11-23 02:16:31,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:31,789 INFO L470 AbstractCegarLoop]: Abstraction has 133994 states and 198322 transitions. [2021-11-23 02:16:31,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 02:16:31,790 INFO L276 IsEmpty]: Start isEmpty. Operand 133994 states and 198322 transitions. [2021-11-23 02:16:31,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2021-11-23 02:16:31,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:31,804 INFO L514 BasicCegarLoop]: trace histogram [46, 43, 43, 43, 43, 43, 43, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:31,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:16:31,805 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 02:16:31,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:31,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1618822618, now seen corresponding path program 1 times [2021-11-23 02:16:31,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:31,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657001919] [2021-11-23 02:16:31,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:31,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:32,950 INFO L134 CoverageAnalysis]: Checked inductivity of 7510 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7504 trivial. 0 not checked. [2021-11-23 02:16:32,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:32,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657001919] [2021-11-23 02:16:32,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657001919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:32,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:32,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:16:32,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540603322] [2021-11-23 02:16:32,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:32,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:16:32,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:32,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:16:32,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:16:32,952 INFO L87 Difference]: Start difference. First operand 133994 states and 198322 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 02:16:35,388 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:16:38,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:16:39,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:16:41,268 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:16:43,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:16:45,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:16:47,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:16:49,684 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:16:53,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:16:57,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:16:59,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:17:02,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:04,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:08,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:11,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:14,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:17:16,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:20,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:17:22,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:24,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:17:26,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:17:28,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:17:30,924 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 02:17:32,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:32,230 INFO L93 Difference]: Finished difference Result 134023 states and 198349 transitions. [2021-11-23 02:17:32,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:17:32,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 494 [2021-11-23 02:17:32,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:33,033 INFO L225 Difference]: With dead ends: 134023 [2021-11-23 02:17:33,034 INFO L226 Difference]: Without dead ends: 134021 [2021-11-23 02:17:33,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:17:33,095 INFO L933 BasicCegarLoop]: 3877 mSDtfsCounter, 3339 mSDsluCounter, 12300 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 2 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3360 SdHoareTripleChecker+Valid, 14609 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:33,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3360 Valid, 14609 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2109 Invalid, 18 Unknown, 0 Unchecked, 55.3s Time] [2021-11-23 02:17:33,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134021 states. [2021-11-23 02:17:40,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134021 to 134002. [2021-11-23 02:17:40,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134002 states, 86479 states have (on average 1.3314099376727297) internal successors, (115139), 87782 states have internal predecessors, (115139), 39213 states have call successors, (39213), 8485 states have call predecessors, (39213), 8307 states have return successors, (43976), 37983 states have call predecessors, (43976), 39197 states have call successors, (43976) [2021-11-23 02:17:42,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134002 states to 134002 states and 198328 transitions. [2021-11-23 02:17:42,097 INFO L78 Accepts]: Start accepts. Automaton has 134002 states and 198328 transitions. Word has length 494 [2021-11-23 02:17:42,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:42,098 INFO L470 AbstractCegarLoop]: Abstraction has 134002 states and 198328 transitions. [2021-11-23 02:17:42,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 02:17:42,099 INFO L276 IsEmpty]: Start isEmpty. Operand 134002 states and 198328 transitions. [2021-11-23 02:17:42,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2021-11-23 02:17:42,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:42,115 INFO L514 BasicCegarLoop]: trace histogram [46, 43, 43, 43, 43, 43, 43, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:42,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:17:42,115 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 02:17:42,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:42,116 INFO L85 PathProgramCache]: Analyzing trace with hash 28264995, now seen corresponding path program 1 times [2021-11-23 02:17:42,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:42,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248540869] [2021-11-23 02:17:42,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:42,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:42,855 INFO L134 CoverageAnalysis]: Checked inductivity of 7525 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7517 trivial. 0 not checked. [2021-11-23 02:17:42,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:42,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248540869] [2021-11-23 02:17:42,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248540869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:42,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:42,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:17:42,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390616308] [2021-11-23 02:17:42,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:42,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:17:42,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:42,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:17:42,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:17:42,858 INFO L87 Difference]: Start difference. First operand 134002 states and 198328 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 02:17:44,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:49,032 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:50,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:51,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:54,271 WARN L534 Checker$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 02:17:56,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:18:00,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:18:02,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:18:05,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:18:07,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:18:10,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:18:13,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:15,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:18,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:21,955 WARN L534 Checker$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 02:18:24,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:18:27,195 WARN L534 Checker$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 02:18:31,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:18:33,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:35,268 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:18:37,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:18:39,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:18:41,432 WARN L534 Checker$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 02:18:42,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:18:42,777 INFO L93 Difference]: Finished difference Result 134029 states and 198351 transitions. [2021-11-23 02:18:42,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:18:42,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 500 [2021-11-23 02:18:42,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:18:43,509 INFO L225 Difference]: With dead ends: 134029 [2021-11-23 02:18:43,509 INFO L226 Difference]: Without dead ends: 134027 [2021-11-23 02:18:43,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:18:43,570 INFO L933 BasicCegarLoop]: 3905 mSDtfsCounter, 3312 mSDsluCounter, 12390 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 2 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 14693 SdHoareTripleChecker+Invalid, 2179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:18:43,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3331 Valid, 14693 Invalid, 2179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2160 Invalid, 17 Unknown, 0 Unchecked, 56.3s Time] [2021-11-23 02:18:43,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134027 states. [2021-11-23 02:18:51,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134027 to 134010. [2021-11-23 02:18:51,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134010 states, 86485 states have (on average 1.3313869457131295) internal successors, (115145), 87788 states have internal predecessors, (115145), 39213 states have call successors, (39213), 8487 states have call predecessors, (39213), 8309 states have return successors, (43976), 37983 states have call predecessors, (43976), 39197 states have call successors, (43976) [2021-11-23 02:18:52,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134010 states to 134010 states and 198334 transitions. [2021-11-23 02:18:52,047 INFO L78 Accepts]: Start accepts. Automaton has 134010 states and 198334 transitions. Word has length 500 [2021-11-23 02:18:52,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:18:52,047 INFO L470 AbstractCegarLoop]: Abstraction has 134010 states and 198334 transitions. [2021-11-23 02:18:52,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 02:18:52,048 INFO L276 IsEmpty]: Start isEmpty. Operand 134010 states and 198334 transitions. [2021-11-23 02:18:52,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2021-11-23 02:18:52,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:18:52,065 INFO L514 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:18:52,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:18:52,066 INFO L402 AbstractCegarLoop]: === Iteration 11 === 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 02:18:52,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:18:52,067 INFO L85 PathProgramCache]: Analyzing trace with hash -780342207, now seen corresponding path program 1 times [2021-11-23 02:18:52,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:18:52,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355856296] [2021-11-23 02:18:52,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:18:52,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:18:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:18:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2021-11-23 02:18:53,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:18:53,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355856296] [2021-11-23 02:18:53,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355856296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:18:53,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:18:53,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:18:53,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108460474] [2021-11-23 02:18:53,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:18:53,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:18:53,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:18:53,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:18:53,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:18:53,253 INFO L87 Difference]: Start difference. First operand 134010 states and 198334 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-23 02:18:55,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:02,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:04,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:06,789 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:09,378 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:12,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:14,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:16,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:19,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:22,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:25,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:28,175 WARN L534 Checker$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 02:19:30,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:32,832 WARN L534 Checker$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 02:19:38,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:40,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:42,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:44,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:47,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:49,083 WARN L534 Checker$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 02:19:52,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:19:52,618 INFO L93 Difference]: Finished difference Result 378050 states and 557152 transitions. [2021-11-23 02:19:52,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:19:52,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 492 [2021-11-23 02:19:52,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:19:54,567 INFO L225 Difference]: With dead ends: 378050 [2021-11-23 02:19:54,567 INFO L226 Difference]: Without dead ends: 244127 [2021-11-23 02:19:55,145 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 02:19:55,146 INFO L933 BasicCegarLoop]: 4011 mSDtfsCounter, 2917 mSDsluCounter, 3552 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 7 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2929 SdHoareTripleChecker+Valid, 7071 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:19:55,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2929 Valid, 7071 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1153 Invalid, 16 Unknown, 0 Unchecked, 50.5s Time] [2021-11-23 02:19:55,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244127 states. [2021-11-23 02:20:10,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244127 to 243862. [2021-11-23 02:20:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243862 states, 156629 states have (on average 1.3217794916650174) internal successors, (207029), 159296 states have internal predecessors, (207029), 71193 states have call successors, (71193), 16379 states have call predecessors, (71193), 16037 states have return successors, (80098), 68675 states have call predecessors, (80098), 71177 states have call successors, (80098)