./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4bd03bf538c8a1f05055d45724b67645b210b4f99e6ffddc4b441645e05ec36a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 17:02:56,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 17:02:56,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 17:02:56,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 17:02:56,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 17:02:56,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 17:02:56,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 17:02:56,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 17:02:56,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 17:02:56,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 17:02:56,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 17:02:56,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 17:02:56,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 17:02:56,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 17:02:56,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 17:02:56,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 17:02:56,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 17:02:56,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 17:02:56,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 17:02:56,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 17:02:56,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 17:02:56,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 17:02:56,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 17:02:56,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 17:02:56,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 17:02:56,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 17:02:56,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 17:02:56,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 17:02:56,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 17:02:56,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 17:02:56,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 17:02:56,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 17:02:56,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 17:02:56,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 17:02:56,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 17:02:56,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 17:02:56,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 17:02:56,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 17:02:56,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 17:02:56,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 17:02:56,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 17:02:56,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 17:02:56,162 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 17:02:56,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 17:02:56,163 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 17:02:56,163 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 17:02:56,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 17:02:56,164 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 17:02:56,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 17:02:56,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 17:02:56,165 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 17:02:56,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 17:02:56,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 17:02:56,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 17:02:56,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 17:02:56,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 17:02:56,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 17:02:56,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 17:02:56,167 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 17:02:56,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 17:02:56,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 17:02:56,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 17:02:56,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 17:02:56,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 17:02:56,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 17:02:56,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 17:02:56,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 17:02:56,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 17:02:56,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 17:02:56,170 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 17:02:56,171 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 17:02:56,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 17:02:56,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 17:02:56,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4bd03bf538c8a1f05055d45724b67645b210b4f99e6ffddc4b441645e05ec36a [2021-12-21 17:02:56,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 17:02:56,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 17:02:56,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 17:02:56,418 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 17:02:56,419 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 17:02:56,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2021-12-21 17:02:56,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bcb6a3ff/b1508dab7b69486b890d42ffa5318c48/FLAGa3a7a6ba8 [2021-12-21 17:02:57,111 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 17:02:57,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2021-12-21 17:02:57,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bcb6a3ff/b1508dab7b69486b890d42ffa5318c48/FLAGa3a7a6ba8 [2021-12-21 17:02:57,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bcb6a3ff/b1508dab7b69486b890d42ffa5318c48 [2021-12-21 17:02:57,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 17:02:57,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 17:02:57,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 17:02:57,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 17:02:57,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 17:02:57,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:02:57" (1/1) ... [2021-12-21 17:02:57,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e6886a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:02:57, skipping insertion in model container [2021-12-21 17:02:57,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:02:57" (1/1) ... [2021-12-21 17:02:57,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 17:02:57,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 17:02:58,585 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196376,196389] [2021-12-21 17:02:58,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196545,196558] [2021-12-21 17:02:58,590 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196712,196725] [2021-12-21 17:02:58,590 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196880,196893] [2021-12-21 17:02:58,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 17:02:58,627 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 17:02:58,871 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196376,196389] [2021-12-21 17:02:58,872 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196545,196558] [2021-12-21 17:02:58,872 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196712,196725] [2021-12-21 17:02:58,872 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196880,196893] [2021-12-21 17:02:58,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 17:02:58,972 INFO L208 MainTranslator]: Completed translation [2021-12-21 17:02:58,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:02:58 WrapperNode [2021-12-21 17:02:58,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 17:02:58,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 17:02:58,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 17:02:58,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 17:02:58,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:02:58" (1/1) ... [2021-12-21 17:02:59,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:02:58" (1/1) ... [2021-12-21 17:02:59,123 INFO L137 Inliner]: procedures = 289, calls = 1101, calls flagged for inlining = 114, calls inlined = 94, statements flattened = 2349 [2021-12-21 17:02:59,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 17:02:59,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 17:02:59,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 17:02:59,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 17:02:59,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:02:58" (1/1) ... [2021-12-21 17:02:59,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:02:58" (1/1) ... [2021-12-21 17:02:59,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:02:58" (1/1) ... [2021-12-21 17:02:59,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:02:58" (1/1) ... [2021-12-21 17:02:59,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:02:58" (1/1) ... [2021-12-21 17:02:59,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:02:58" (1/1) ... [2021-12-21 17:02:59,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:02:58" (1/1) ... [2021-12-21 17:02:59,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 17:02:59,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 17:02:59,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 17:02:59,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 17:02:59,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:02:58" (1/1) ... [2021-12-21 17:02:59,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 17:02:59,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 17:02:59,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 17:02:59,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 17:02:59,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-21 17:02:59,375 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-21 17:02:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 17:02:59,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 17:02:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-21 17:02:59,376 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-21 17:02:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2021-12-21 17:02:59,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2021-12-21 17:02:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_efm_disable [2021-12-21 17:02:59,377 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_efm_disable [2021-12-21 17:02:59,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-12-21 17:02:59,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-12-21 17:02:59,377 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-12-21 17:02:59,377 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-12-21 17:02:59,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 17:02:59,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 17:02:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_len [2021-12-21 17:02:59,378 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_len [2021-12-21 17:02:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_wake_reg_read [2021-12-21 17:02:59,378 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_wake_reg_read [2021-12-21 17:02:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-12-21 17:02:59,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-12-21 17:02:59,379 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-21 17:02:59,379 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-21 17:02:59,379 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_clear_tx_fifo [2021-12-21 17:02:59,379 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_clear_tx_fifo [2021-12-21 17:02:59,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-12-21 17:02:59,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-12-21 17:02:59,380 INFO L130 BoogieDeclarations]: Found specification of procedure ir_raw_event_handle [2021-12-21 17:02:59,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_raw_event_handle [2021-12-21 17:02:59,380 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-21 17:02:59,380 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-21 17:02:59,380 INFO L130 BoogieDeclarations]: Found specification of procedure rc_unregister_device [2021-12-21 17:02:59,381 INFO L138 BoogieDeclarations]: Found implementation of procedure rc_unregister_device [2021-12-21 17:02:59,381 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_clear_cir_wake_fifo [2021-12-21 17:02:59,381 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_clear_cir_wake_fifo [2021-12-21 17:02:59,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 17:02:59,381 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_process_rx_ir_data [2021-12-21 17:02:59,382 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_process_rx_ir_data [2021-12-21 17:02:59,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 17:02:59,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-21 17:02:59,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-12-21 17:02:59,382 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cr_write [2021-12-21 17:02:59,382 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cr_write [2021-12-21 17:02:59,383 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_remove [2021-12-21 17:02:59,383 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_remove [2021-12-21 17:02:59,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_47 [2021-12-21 17:02:59,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_47 [2021-12-21 17:02:59,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_45 [2021-12-21 17:02:59,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_45 [2021-12-21 17:02:59,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-21 17:02:59,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-21 17:02:59,385 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-21 17:02:59,385 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-21 17:02:59,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 17:02:59,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 17:02:59,386 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_regs_init [2021-12-21 17:02:59,386 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_regs_init [2021-12-21 17:02:59,386 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_tx_inactive [2021-12-21 17:02:59,387 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_tx_inactive [2021-12-21 17:02:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2021-12-21 17:02:59,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2021-12-21 17:02:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_clear_cir_fifo [2021-12-21 17:02:59,387 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_clear_cir_fifo [2021-12-21 17:02:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-21 17:02:59,388 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-21 17:02:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-12-21 17:02:59,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-12-21 17:02:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-12-21 17:02:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-12-21 17:02:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-12-21 17:02:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-12-21 17:02:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_reg_read [2021-12-21 17:02:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_reg_read [2021-12-21 17:02:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_nvt_lock_of_nvt_dev [2021-12-21 17:02:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_nvt_lock_of_nvt_dev [2021-12-21 17:02:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-21 17:02:59,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-21 17:02:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_get_rx_ir_data [2021-12-21 17:02:59,390 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_get_rx_ir_data [2021-12-21 17:02:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-21 17:02:59,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-21 17:02:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_resource [2021-12-21 17:02:59,391 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_resource [2021-12-21 17:02:59,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 17:02:59,391 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_reg_write [2021-12-21 17:02:59,391 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_reg_write [2021-12-21 17:02:59,392 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_valid [2021-12-21 17:02:59,392 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_valid [2021-12-21 17:02:59,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-12-21 17:02:59,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-12-21 17:02:59,393 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_set_cir_iren [2021-12-21 17:02:59,393 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_set_cir_iren [2021-12-21 17:02:59,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 17:02:59,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-12-21 17:02:59,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-12-21 17:02:59,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-12-21 17:02:59,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-12-21 17:02:59,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-12-21 17:02:59,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-12-21 17:02:59,394 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_set_reg_bit [2021-12-21 17:02:59,394 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_set_reg_bit [2021-12-21 17:02:59,394 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-12-21 17:02:59,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-12-21 17:02:59,395 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 17:02:59,395 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 17:02:59,395 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_wake_regs_init [2021-12-21 17:02:59,395 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_wake_regs_init [2021-12-21 17:02:59,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 17:02:59,396 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cr_read [2021-12-21 17:02:59,396 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cr_read [2021-12-21 17:02:59,397 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_enable_wake [2021-12-21 17:02:59,397 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_enable_wake [2021-12-21 17:02:59,399 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-12-21 17:02:59,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-12-21 17:02:59,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-12-21 17:02:59,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-12-21 17:02:59,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 17:02:59,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-12-21 17:02:59,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-12-21 17:02:59,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 17:02:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-21 17:02:59,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-21 17:02:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 17:02:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_wake_reg_write [2021-12-21 17:02:59,406 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_wake_reg_write [2021-12-21 17:02:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_efm_enable [2021-12-21 17:02:59,407 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_efm_enable [2021-12-21 17:02:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_disable_cir [2021-12-21 17:02:59,407 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_disable_cir [2021-12-21 17:02:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_start [2021-12-21 17:02:59,407 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_start [2021-12-21 17:02:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_select_logical_dev [2021-12-21 17:02:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_select_logical_dev [2021-12-21 17:02:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-12-21 17:02:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-12-21 17:02:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-12-21 17:02:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-12-21 17:02:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2021-12-21 17:02:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2021-12-21 17:02:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_shutdown [2021-12-21 17:02:59,409 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_shutdown [2021-12-21 17:02:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-21 17:02:59,409 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-21 17:02:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_drvdata [2021-12-21 17:02:59,409 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_drvdata [2021-12-21 17:02:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 17:02:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2021-12-21 17:02:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2021-12-21 17:02:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_valid [2021-12-21 17:02:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_valid [2021-12-21 17:02:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-21 17:02:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-21 17:02:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 17:02:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 17:02:59,901 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 17:02:59,905 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 17:03:00,253 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 17:03:03,211 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-12-21 17:03:03,258 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 17:03:03,270 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 17:03:03,270 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 17:03:03,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:03:03 BoogieIcfgContainer [2021-12-21 17:03:03,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 17:03:03,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 17:03:03,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 17:03:03,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 17:03:03,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:02:57" (1/3) ... [2021-12-21 17:03:03,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea5fe9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:03:03, skipping insertion in model container [2021-12-21 17:03:03,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:02:58" (2/3) ... [2021-12-21 17:03:03,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea5fe9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:03:03, skipping insertion in model container [2021-12-21 17:03:03,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:03:03" (3/3) ... [2021-12-21 17:03:03,279 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2021-12-21 17:03:03,282 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 17:03:03,282 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-12-21 17:03:03,320 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 17:03:03,325 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 17:03:03,325 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-21 17:03:03,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 1073 states, 632 states have (on average 1.2373417721518987) internal successors, (782), 646 states have internal predecessors, (782), 368 states have call successors, (368), 71 states have call predecessors, (368), 70 states have return successors, (364), 363 states have call predecessors, (364), 364 states have call successors, (364) [2021-12-21 17:03:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-21 17:03:03,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:03:03,368 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:03:03,369 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)] === [2021-12-21 17:03:03,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:03:03,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1302694362, now seen corresponding path program 1 times [2021-12-21 17:03:03,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:03:03,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566725970] [2021-12-21 17:03:03,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:03:03,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:03:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:03,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:03:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:03,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:03,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:03:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:03,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:03,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:03:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:03,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:03,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 17:03:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:03,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:03:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-21 17:03:03,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:03:03,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566725970] [2021-12-21 17:03:03,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566725970] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:03:03,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:03:03,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:03:03,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137265805] [2021-12-21 17:03:03,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:03:03,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:03:03,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:03:03,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:03:03,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:03:03,840 INFO L87 Difference]: Start difference. First operand has 1073 states, 632 states have (on average 1.2373417721518987) internal successors, (782), 646 states have internal predecessors, (782), 368 states have call successors, (368), 71 states have call predecessors, (368), 70 states have return successors, (364), 363 states have call predecessors, (364), 364 states have call successors, (364) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-21 17:03:06,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:03:06,687 INFO L93 Difference]: Finished difference Result 3210 states and 4628 transitions. [2021-12-21 17:03:06,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:03:06,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 57 [2021-12-21 17:03:06,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:03:06,714 INFO L225 Difference]: With dead ends: 3210 [2021-12-21 17:03:06,715 INFO L226 Difference]: Without dead ends: 2139 [2021-12-21 17:03:06,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:03:06,729 INFO L933 BasicCegarLoop]: 1649 mSDtfsCounter, 1511 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 1067 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 3362 SdHoareTripleChecker+Invalid, 2149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1067 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-21 17:03:06,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1850 Valid, 3362 Invalid, 2149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1067 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-21 17:03:06,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2021-12-21 17:03:06,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2055. [2021-12-21 17:03:06,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2055 states, 1211 states have (on average 1.23121387283237) internal successors, (1491), 1237 states have internal predecessors, (1491), 704 states have call successors, (704), 138 states have call predecessors, (704), 137 states have return successors, (701), 699 states have call predecessors, (701), 701 states have call successors, (701) [2021-12-21 17:03:06,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 2896 transitions. [2021-12-21 17:03:06,946 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 2896 transitions. Word has length 57 [2021-12-21 17:03:06,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:03:06,947 INFO L470 AbstractCegarLoop]: Abstraction has 2055 states and 2896 transitions. [2021-12-21 17:03:06,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-21 17:03:06,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 2896 transitions. [2021-12-21 17:03:06,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-21 17:03:06,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:03:06,952 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:03:06,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 17:03:06,952 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)] === [2021-12-21 17:03:06,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:03:06,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1668427310, now seen corresponding path program 1 times [2021-12-21 17:03:06,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:03:06,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840173565] [2021-12-21 17:03:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:03:06,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:03:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:07,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:03:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:07,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:07,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:03:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:07,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:07,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:03:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:07,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:07,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 17:03:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:07,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 17:03:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-21 17:03:07,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:03:07,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840173565] [2021-12-21 17:03:07,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840173565] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:03:07,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:03:07,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:03:07,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451744579] [2021-12-21 17:03:07,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:03:07,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:03:07,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:03:07,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:03:07,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:03:07,209 INFO L87 Difference]: Start difference. First operand 2055 states and 2896 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-21 17:03:09,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:03:09,196 INFO L93 Difference]: Finished difference Result 3950 states and 5567 transitions. [2021-12-21 17:03:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:03:09,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 71 [2021-12-21 17:03:09,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:03:09,208 INFO L225 Difference]: With dead ends: 3950 [2021-12-21 17:03:09,209 INFO L226 Difference]: Without dead ends: 1906 [2021-12-21 17:03:09,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:03:09,221 INFO L933 BasicCegarLoop]: 1485 mSDtfsCounter, 747 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 1512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-21 17:03:09,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 3163 Invalid, 1512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-21 17:03:09,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2021-12-21 17:03:09,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1829. [2021-12-21 17:03:09,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1140 states have (on average 1.2578947368421052) internal successors, (1434), 1178 states have internal predecessors, (1434), 555 states have call successors, (555), 132 states have call predecessors, (555), 131 states have return successors, (552), 548 states have call predecessors, (552), 552 states have call successors, (552) [2021-12-21 17:03:09,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2541 transitions. [2021-12-21 17:03:09,298 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2541 transitions. Word has length 71 [2021-12-21 17:03:09,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:03:09,299 INFO L470 AbstractCegarLoop]: Abstraction has 1829 states and 2541 transitions. [2021-12-21 17:03:09,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-21 17:03:09,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2541 transitions. [2021-12-21 17:03:09,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-21 17:03:09,307 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:03:09,307 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:03:09,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 17:03:09,308 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:03:09,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:03:09,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1262481058, now seen corresponding path program 1 times [2021-12-21 17:03:09,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:03:09,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313064324] [2021-12-21 17:03:09,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:03:09,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:03:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:09,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:03:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:03:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:09,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:03:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:09,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:09,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 17:03:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:09,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 17:03:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:09,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 17:03:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:09,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 17:03:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:09,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 17:03:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:09,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:09,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 17:03:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 17:03:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:09,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 17:03:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:09,497 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-21 17:03:09,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:03:09,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313064324] [2021-12-21 17:03:09,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313064324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:03:09,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:03:09,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:03:09,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906309514] [2021-12-21 17:03:09,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:03:09,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:03:09,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:03:09,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:03:09,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:03:09,500 INFO L87 Difference]: Start difference. First operand 1829 states and 2541 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 17:03:11,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:03:11,774 INFO L93 Difference]: Finished difference Result 4767 states and 6663 transitions. [2021-12-21 17:03:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:03:11,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2021-12-21 17:03:11,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:03:11,794 INFO L225 Difference]: With dead ends: 4767 [2021-12-21 17:03:11,795 INFO L226 Difference]: Without dead ends: 3303 [2021-12-21 17:03:11,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:03:11,805 INFO L933 BasicCegarLoop]: 2015 mSDtfsCounter, 1424 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 997 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1757 SdHoareTripleChecker+Valid, 3966 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 997 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:03:11,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1757 Valid, 3966 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [997 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-21 17:03:11,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3303 states. [2021-12-21 17:03:11,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3303 to 3181. [2021-12-21 17:03:11,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3181 states, 1966 states have (on average 1.2563580874872837) internal successors, (2470), 2025 states have internal predecessors, (2470), 984 states have call successors, (984), 229 states have call predecessors, (984), 228 states have return successors, (981), 976 states have call predecessors, (981), 981 states have call successors, (981) [2021-12-21 17:03:11,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3181 states to 3181 states and 4435 transitions. [2021-12-21 17:03:11,946 INFO L78 Accepts]: Start accepts. Automaton has 3181 states and 4435 transitions. Word has length 109 [2021-12-21 17:03:11,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:03:11,950 INFO L470 AbstractCegarLoop]: Abstraction has 3181 states and 4435 transitions. [2021-12-21 17:03:11,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 17:03:11,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3181 states and 4435 transitions. [2021-12-21 17:03:11,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-21 17:03:11,954 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:03:11,954 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:03:11,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 17:03:11,955 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:03:11,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:03:11,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1685182884, now seen corresponding path program 1 times [2021-12-21 17:03:11,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:03:11,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413205714] [2021-12-21 17:03:11,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:03:11,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:03:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:12,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:03:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:12,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:12,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:03:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:12,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:12,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:03:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:12,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:12,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 17:03:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:12,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 17:03:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:12,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 17:03:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:12,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 17:03:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:12,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 17:03:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:12,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 17:03:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:12,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 17:03:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:12,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 17:03:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-21 17:03:12,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:03:12,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413205714] [2021-12-21 17:03:12,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413205714] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:03:12,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:03:12,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 17:03:12,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352902728] [2021-12-21 17:03:12,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:03:12,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 17:03:12,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:03:12,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 17:03:12,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 17:03:12,268 INFO L87 Difference]: Start difference. First operand 3181 states and 4435 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 17:03:13,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:03:13,950 INFO L93 Difference]: Finished difference Result 3291 states and 4606 transitions. [2021-12-21 17:03:13,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 17:03:13,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2021-12-21 17:03:13,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:03:13,971 INFO L225 Difference]: With dead ends: 3291 [2021-12-21 17:03:13,971 INFO L226 Difference]: Without dead ends: 3289 [2021-12-21 17:03:13,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-21 17:03:13,974 INFO L933 BasicCegarLoop]: 1376 mSDtfsCounter, 1298 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 732 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 732 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 17:03:13,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1518 Valid, 4285 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [732 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 17:03:13,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-12-21 17:03:14,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 3185. [2021-12-21 17:03:14,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3185 states, 1969 states have (on average 1.25596749619096) internal successors, (2473), 2028 states have internal predecessors, (2473), 984 states have call successors, (984), 230 states have call predecessors, (984), 229 states have return successors, (981), 976 states have call predecessors, (981), 981 states have call successors, (981) [2021-12-21 17:03:14,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 4438 transitions. [2021-12-21 17:03:14,127 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 4438 transitions. Word has length 109 [2021-12-21 17:03:14,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:03:14,128 INFO L470 AbstractCegarLoop]: Abstraction has 3185 states and 4438 transitions. [2021-12-21 17:03:14,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 17:03:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 4438 transitions. [2021-12-21 17:03:14,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 17:03:14,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:03:14,131 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:03:14,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 17:03:14,131 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:03:14,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:03:14,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1846967406, now seen corresponding path program 1 times [2021-12-21 17:03:14,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:03:14,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376604002] [2021-12-21 17:03:14,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:03:14,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:03:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:03:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:03:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:03:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 17:03:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 17:03:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 17:03:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 17:03:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 17:03:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 17:03:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 17:03:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 17:03:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:14,360 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-21 17:03:14,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:03:14,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376604002] [2021-12-21 17:03:14,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376604002] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:03:14,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:03:14,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:03:14,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341991556] [2021-12-21 17:03:14,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:03:14,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:03:14,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:03:14,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:03:14,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:03:14,363 INFO L87 Difference]: Start difference. First operand 3185 states and 4438 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 17:03:17,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:03:17,048 INFO L93 Difference]: Finished difference Result 9100 states and 12700 transitions. [2021-12-21 17:03:17,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:03:17,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 124 [2021-12-21 17:03:17,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:03:17,081 INFO L225 Difference]: With dead ends: 9100 [2021-12-21 17:03:17,082 INFO L226 Difference]: Without dead ends: 5926 [2021-12-21 17:03:17,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:03:17,093 INFO L933 BasicCegarLoop]: 1745 mSDtfsCounter, 1461 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 1044 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1782 SdHoareTripleChecker+Valid, 3539 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1044 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 17:03:17,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1782 Valid, 3539 Invalid, 2123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1044 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 17:03:17,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5926 states. [2021-12-21 17:03:17,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5926 to 5691. [2021-12-21 17:03:17,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5691 states, 3503 states have (on average 1.243791036254639) internal successors, (4357), 3597 states have internal predecessors, (4357), 1767 states have call successors, (1767), 419 states have call predecessors, (1767), 418 states have return successors, (1776), 1754 states have call predecessors, (1776), 1764 states have call successors, (1776) [2021-12-21 17:03:17,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5691 states to 5691 states and 7900 transitions. [2021-12-21 17:03:17,367 INFO L78 Accepts]: Start accepts. Automaton has 5691 states and 7900 transitions. Word has length 124 [2021-12-21 17:03:17,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:03:17,368 INFO L470 AbstractCegarLoop]: Abstraction has 5691 states and 7900 transitions. [2021-12-21 17:03:17,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 17:03:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 5691 states and 7900 transitions. [2021-12-21 17:03:17,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-21 17:03:17,371 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:03:17,371 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-12-21 17:03:17,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 17:03:17,371 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)] === [2021-12-21 17:03:17,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:03:17,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1875449172, now seen corresponding path program 1 times [2021-12-21 17:03:17,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:03:17,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460304090] [2021-12-21 17:03:17,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:03:17,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:03:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:17,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:03:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:17,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:17,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:03:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:17,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:17,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:03:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:17,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:17,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 17:03:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:17,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 17:03:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:17,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 17:03:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:17,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 17:03:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:17,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 17:03:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:17,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:17,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 17:03:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:17,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 17:03:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:17,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 17:03:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:17,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 17:03:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-21 17:03:17,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:03:17,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460304090] [2021-12-21 17:03:17,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460304090] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:03:17,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:03:17,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 17:03:17,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387021906] [2021-12-21 17:03:17,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:03:17,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 17:03:17,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:03:17,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 17:03:17,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 17:03:17,641 INFO L87 Difference]: Start difference. First operand 5691 states and 7900 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 17:03:19,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:03:19,427 INFO L93 Difference]: Finished difference Result 5897 states and 8221 transitions. [2021-12-21 17:03:19,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 17:03:19,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2021-12-21 17:03:19,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:03:19,459 INFO L225 Difference]: With dead ends: 5897 [2021-12-21 17:03:19,459 INFO L226 Difference]: Without dead ends: 5895 [2021-12-21 17:03:19,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-21 17:03:19,464 INFO L933 BasicCegarLoop]: 1394 mSDtfsCounter, 1275 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 17:03:19,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1495 Valid, 4333 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 17:03:19,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5895 states. [2021-12-21 17:03:19,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5895 to 5695. [2021-12-21 17:03:19,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5695 states, 3506 states have (on average 1.2435824301197946) internal successors, (4360), 3600 states have internal predecessors, (4360), 1767 states have call successors, (1767), 420 states have call predecessors, (1767), 419 states have return successors, (1776), 1754 states have call predecessors, (1776), 1764 states have call successors, (1776) [2021-12-21 17:03:19,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5695 states to 5695 states and 7903 transitions. [2021-12-21 17:03:19,728 INFO L78 Accepts]: Start accepts. Automaton has 5695 states and 7903 transitions. Word has length 114 [2021-12-21 17:03:19,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:03:19,730 INFO L470 AbstractCegarLoop]: Abstraction has 5695 states and 7903 transitions. [2021-12-21 17:03:19,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 17:03:19,730 INFO L276 IsEmpty]: Start isEmpty. Operand 5695 states and 7903 transitions. [2021-12-21 17:03:19,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-21 17:03:19,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:03:19,735 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:03:19,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 17:03:19,735 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:03:19,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:03:19,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1120878748, now seen corresponding path program 1 times [2021-12-21 17:03:19,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:03:19,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247241205] [2021-12-21 17:03:19,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:03:19,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:03:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:19,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:03:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:19,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:19,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:03:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:19,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:19,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:03:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:19,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:19,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 17:03:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:19,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 17:03:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:19,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 17:03:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:19,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 17:03:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:19,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 17:03:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:19,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:19,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 17:03:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:19,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 17:03:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:19,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 17:03:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:19,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 17:03:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:19,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 17:03:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-21 17:03:19,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:03:19,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247241205] [2021-12-21 17:03:19,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247241205] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:03:19,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:03:19,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 17:03:19,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318429886] [2021-12-21 17:03:19,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:03:19,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 17:03:19,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:03:19,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 17:03:19,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 17:03:19,970 INFO L87 Difference]: Start difference. First operand 5695 states and 7903 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 17:03:21,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:03:21,599 INFO L93 Difference]: Finished difference Result 5901 states and 8224 transitions. [2021-12-21 17:03:21,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 17:03:21,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 119 [2021-12-21 17:03:21,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:03:21,648 INFO L225 Difference]: With dead ends: 5901 [2021-12-21 17:03:21,648 INFO L226 Difference]: Without dead ends: 5899 [2021-12-21 17:03:21,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-21 17:03:21,654 INFO L933 BasicCegarLoop]: 1382 mSDtfsCounter, 1287 mSDsluCounter, 2916 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 733 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 4298 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 733 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 17:03:21,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1506 Valid, 4298 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [733 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 17:03:21,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2021-12-21 17:03:21,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 5699. [2021-12-21 17:03:21,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5699 states, 3509 states have (on average 1.243374180678256) internal successors, (4363), 3603 states have internal predecessors, (4363), 1767 states have call successors, (1767), 421 states have call predecessors, (1767), 420 states have return successors, (1776), 1754 states have call predecessors, (1776), 1764 states have call successors, (1776) [2021-12-21 17:03:21,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5699 states to 5699 states and 7906 transitions. [2021-12-21 17:03:21,903 INFO L78 Accepts]: Start accepts. Automaton has 5699 states and 7906 transitions. Word has length 119 [2021-12-21 17:03:21,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:03:21,903 INFO L470 AbstractCegarLoop]: Abstraction has 5699 states and 7906 transitions. [2021-12-21 17:03:21,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 17:03:21,904 INFO L276 IsEmpty]: Start isEmpty. Operand 5699 states and 7906 transitions. [2021-12-21 17:03:21,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 17:03:21,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:03:21,906 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:03:21,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 17:03:21,907 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)] === [2021-12-21 17:03:21,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:03:21,908 INFO L85 PathProgramCache]: Analyzing trace with hash -345114860, now seen corresponding path program 1 times [2021-12-21 17:03:21,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:03:21,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392551343] [2021-12-21 17:03:21,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:03:21,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:03:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:03:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:03:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:03:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 17:03:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 17:03:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 17:03:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 17:03:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 17:03:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 17:03:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 17:03:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 17:03:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 17:03:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 17:03:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 17:03:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-12-21 17:03:22,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:03:22,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392551343] [2021-12-21 17:03:22,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392551343] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:03:22,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:03:22,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 17:03:22,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585405597] [2021-12-21 17:03:22,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:03:22,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 17:03:22,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:03:22,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 17:03:22,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 17:03:22,126 INFO L87 Difference]: Start difference. First operand 5699 states and 7906 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 17:03:23,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:03:23,830 INFO L93 Difference]: Finished difference Result 6150 states and 8435 transitions. [2021-12-21 17:03:23,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 17:03:23,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2021-12-21 17:03:23,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:03:23,856 INFO L225 Difference]: With dead ends: 6150 [2021-12-21 17:03:23,856 INFO L226 Difference]: Without dead ends: 6148 [2021-12-21 17:03:23,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-21 17:03:23,860 INFO L933 BasicCegarLoop]: 1375 mSDtfsCounter, 1286 mSDsluCounter, 2931 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 4306 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 17:03:23,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 4306 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 17:03:23,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6148 states. [2021-12-21 17:03:24,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6148 to 5946. [2021-12-21 17:03:24,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5946 states, 3674 states have (on average 1.2348938486663037) internal successors, (4537), 3768 states have internal predecessors, (4537), 1785 states have call successors, (1785), 485 states have call predecessors, (1785), 484 states have return successors, (1794), 1772 states have call predecessors, (1794), 1782 states have call successors, (1794) [2021-12-21 17:03:24,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5946 states to 5946 states and 8116 transitions. [2021-12-21 17:03:24,154 INFO L78 Accepts]: Start accepts. Automaton has 5946 states and 8116 transitions. Word has length 124 [2021-12-21 17:03:24,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:03:24,154 INFO L470 AbstractCegarLoop]: Abstraction has 5946 states and 8116 transitions. [2021-12-21 17:03:24,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 17:03:24,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5946 states and 8116 transitions. [2021-12-21 17:03:24,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-21 17:03:24,159 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:03:24,159 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:03:24,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 17:03:24,159 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)] === [2021-12-21 17:03:24,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:03:24,160 INFO L85 PathProgramCache]: Analyzing trace with hash 575481124, now seen corresponding path program 1 times [2021-12-21 17:03:24,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:03:24,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654037753] [2021-12-21 17:03:24,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:03:24,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:03:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:03:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:03:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:03:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 17:03:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 17:03:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 17:03:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 17:03:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 17:03:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 17:03:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 17:03:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 17:03:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 17:03:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 17:03:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 17:03:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 17:03:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-12-21 17:03:24,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:03:24,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654037753] [2021-12-21 17:03:24,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654037753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:03:24,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:03:24,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 17:03:24,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015888895] [2021-12-21 17:03:24,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:03:24,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 17:03:24,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:03:24,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 17:03:24,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 17:03:24,359 INFO L87 Difference]: Start difference. First operand 5946 states and 8116 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 17:03:26,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:03:26,008 INFO L93 Difference]: Finished difference Result 6152 states and 8437 transitions. [2021-12-21 17:03:26,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 17:03:26,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2021-12-21 17:03:26,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:03:26,039 INFO L225 Difference]: With dead ends: 6152 [2021-12-21 17:03:26,039 INFO L226 Difference]: Without dead ends: 6150 [2021-12-21 17:03:26,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-21 17:03:26,045 INFO L933 BasicCegarLoop]: 1392 mSDtfsCounter, 1277 mSDsluCounter, 2936 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 4328 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 17:03:26,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1496 Valid, 4328 Invalid, 1780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 17:03:26,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6150 states. [2021-12-21 17:03:26,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6150 to 5950. [2021-12-21 17:03:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5950 states, 3677 states have (on average 1.234702202882785) internal successors, (4540), 3771 states have internal predecessors, (4540), 1785 states have call successors, (1785), 486 states have call predecessors, (1785), 485 states have return successors, (1794), 1772 states have call predecessors, (1794), 1782 states have call successors, (1794) [2021-12-21 17:03:26,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5950 states to 5950 states and 8119 transitions. [2021-12-21 17:03:26,368 INFO L78 Accepts]: Start accepts. Automaton has 5950 states and 8119 transitions. Word has length 129 [2021-12-21 17:03:26,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:03:26,369 INFO L470 AbstractCegarLoop]: Abstraction has 5950 states and 8119 transitions. [2021-12-21 17:03:26,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 17:03:26,369 INFO L276 IsEmpty]: Start isEmpty. Operand 5950 states and 8119 transitions. [2021-12-21 17:03:26,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-21 17:03:26,372 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:03:26,372 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:03:26,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 17:03:26,373 INFO L402 AbstractCegarLoop]: === Iteration 10 === 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)] === [2021-12-21 17:03:26,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:03:26,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1365993508, now seen corresponding path program 1 times [2021-12-21 17:03:26,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:03:26,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715072221] [2021-12-21 17:03:26,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:03:26,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:03:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:03:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:03:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:03:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 17:03:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 17:03:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 17:03:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:03:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 17:03:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:03:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 17:03:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 17:03:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 17:03:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 17:03:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 17:03:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-21 17:03:26,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:03:26,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715072221] [2021-12-21 17:03:26,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715072221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:03:26,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:03:26,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:03:26,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446049429] [2021-12-21 17:03:26,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:03:26,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:03:26,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:03:26,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:03:26,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:03:26,595 INFO L87 Difference]: Start difference. First operand 5950 states and 8119 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-21 17:03:28,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:03:28,768 INFO L93 Difference]: Finished difference Result 15732 states and 21528 transitions. [2021-12-21 17:03:28,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:03:28,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 140 [2021-12-21 17:03:28,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:03:28,864 INFO L225 Difference]: With dead ends: 15732 [2021-12-21 17:03:28,865 INFO L226 Difference]: Without dead ends: 9793 [2021-12-21 17:03:28,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:03:28,891 INFO L933 BasicCegarLoop]: 1637 mSDtfsCounter, 1288 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 1029 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 3391 SdHoareTripleChecker+Invalid, 2078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1029 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-21 17:03:28,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 3391 Invalid, 2078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1029 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-21 17:03:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9793 states. [2021-12-21 17:03:29,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9793 to 9418. [2021-12-21 17:03:29,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9418 states, 5717 states have (on average 1.207801294385167) internal successors, (6905), 5823 states have internal predecessors, (6905), 2944 states have call successors, (2944), 759 states have call predecessors, (2944), 754 states have return successors, (2981), 2915 states have call predecessors, (2981), 2941 states have call successors, (2981) [2021-12-21 17:03:29,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9418 states to 9418 states and 12830 transitions. [2021-12-21 17:03:29,389 INFO L78 Accepts]: Start accepts. Automaton has 9418 states and 12830 transitions. Word has length 140 [2021-12-21 17:03:29,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:03:29,390 INFO L470 AbstractCegarLoop]: Abstraction has 9418 states and 12830 transitions. [2021-12-21 17:03:29,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-21 17:03:29,391 INFO L276 IsEmpty]: Start isEmpty. Operand 9418 states and 12830 transitions. [2021-12-21 17:03:29,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-21 17:03:29,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:03:29,394 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:03:29,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 17:03:29,395 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:03:29,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:03:29,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1259332667, now seen corresponding path program 1 times [2021-12-21 17:03:29,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:03:29,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796498721] [2021-12-21 17:03:29,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:03:29,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:03:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:03:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:03:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:03:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 17:03:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 17:03:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 17:03:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 17:03:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 17:03:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 17:03:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 17:03:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 17:03:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 17:03:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 17:03:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 17:03:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 17:03:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 17:03:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 17:03:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 17:03:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:29,681 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-21 17:03:29,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:03:29,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796498721] [2021-12-21 17:03:29,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796498721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:03:29,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:03:29,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 17:03:29,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270318348] [2021-12-21 17:03:29,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:03:29,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 17:03:29,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:03:29,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 17:03:29,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 17:03:29,685 INFO L87 Difference]: Start difference. First operand 9418 states and 12830 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-21 17:03:31,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:03:31,585 INFO L93 Difference]: Finished difference Result 10578 states and 14269 transitions. [2021-12-21 17:03:31,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 17:03:31,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 152 [2021-12-21 17:03:31,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:03:31,635 INFO L225 Difference]: With dead ends: 10578 [2021-12-21 17:03:31,636 INFO L226 Difference]: Without dead ends: 10576 [2021-12-21 17:03:31,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-21 17:03:31,645 INFO L933 BasicCegarLoop]: 1411 mSDtfsCounter, 1210 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 4494 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 17:03:31,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1456 Valid, 4494 Invalid, 1976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 17:03:31,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10576 states. [2021-12-21 17:03:32,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10576 to 10254. [2021-12-21 17:03:32,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10254 states, 6158 states have (on average 1.1929197791490744) internal successors, (7346), 6264 states have internal predecessors, (7346), 3192 states have call successors, (3192), 906 states have call predecessors, (3192), 901 states have return successors, (3229), 3163 states have call predecessors, (3229), 3189 states have call successors, (3229) [2021-12-21 17:03:32,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10254 states to 10254 states and 13767 transitions. [2021-12-21 17:03:32,143 INFO L78 Accepts]: Start accepts. Automaton has 10254 states and 13767 transitions. Word has length 152 [2021-12-21 17:03:32,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:03:32,146 INFO L470 AbstractCegarLoop]: Abstraction has 10254 states and 13767 transitions. [2021-12-21 17:03:32,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-21 17:03:32,147 INFO L276 IsEmpty]: Start isEmpty. Operand 10254 states and 13767 transitions. [2021-12-21 17:03:32,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-21 17:03:32,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:03:32,150 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:03:32,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 17:03:32,150 INFO L402 AbstractCegarLoop]: === Iteration 12 === 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)] === [2021-12-21 17:03:32,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:03:32,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1996373274, now seen corresponding path program 1 times [2021-12-21 17:03:32,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:03:32,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303447870] [2021-12-21 17:03:32,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:03:32,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:03:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:32,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:03:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:32,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:32,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:03:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:32,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:32,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:03:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:32,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:32,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 17:03:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:32,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 17:03:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:32,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 17:03:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:32,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 17:03:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:32,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 17:03:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:32,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 17:03:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:32,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:32,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 17:03:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:32,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 17:03:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:32,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 17:03:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-21 17:03:32,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:03:32,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303447870] [2021-12-21 17:03:32,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303447870] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:03:32,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:03:32,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:03:32,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395471071] [2021-12-21 17:03:32,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:03:32,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:03:32,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:03:32,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:03:32,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:03:32,314 INFO L87 Difference]: Start difference. First operand 10254 states and 13767 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 17:03:34,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:03:34,380 INFO L93 Difference]: Finished difference Result 22949 states and 30823 transitions. [2021-12-21 17:03:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:03:34,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 131 [2021-12-21 17:03:34,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:03:34,454 INFO L225 Difference]: With dead ends: 22949 [2021-12-21 17:03:34,454 INFO L226 Difference]: Without dead ends: 12744 [2021-12-21 17:03:34,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:03:34,508 INFO L933 BasicCegarLoop]: 1873 mSDtfsCounter, 675 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 3765 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 17:03:34,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 3765 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 17:03:34,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12744 states. [2021-12-21 17:03:35,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12744 to 12344. [2021-12-21 17:03:35,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12344 states, 7586 states have (on average 1.200369100975481) internal successors, (9106), 7744 states have internal predecessors, (9106), 3634 states have call successors, (3634), 1126 states have call predecessors, (3634), 1121 states have return successors, (3671), 3593 states have call predecessors, (3671), 3631 states have call successors, (3671) [2021-12-21 17:03:35,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12344 states to 12344 states and 16411 transitions. [2021-12-21 17:03:35,175 INFO L78 Accepts]: Start accepts. Automaton has 12344 states and 16411 transitions. Word has length 131 [2021-12-21 17:03:35,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:03:35,176 INFO L470 AbstractCegarLoop]: Abstraction has 12344 states and 16411 transitions. [2021-12-21 17:03:35,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 17:03:35,176 INFO L276 IsEmpty]: Start isEmpty. Operand 12344 states and 16411 transitions. [2021-12-21 17:03:35,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-21 17:03:35,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:03:35,179 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:03:35,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 17:03:35,179 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:03:35,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:03:35,180 INFO L85 PathProgramCache]: Analyzing trace with hash 245270493, now seen corresponding path program 1 times [2021-12-21 17:03:35,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:03:35,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635723017] [2021-12-21 17:03:35,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:03:35,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:03:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:03:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:03:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:03:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 17:03:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 17:03:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 17:03:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 17:03:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 17:03:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 17:03:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 17:03:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 17:03:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 17:03:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 17:03:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 17:03:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 17:03:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 17:03:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 17:03:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 17:03:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-21 17:03:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-12-21 17:03:35,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:03:35,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635723017] [2021-12-21 17:03:35,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635723017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:03:35,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:03:35,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 17:03:35,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809694476] [2021-12-21 17:03:35,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:03:35,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 17:03:35,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:03:35,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 17:03:35,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 17:03:35,417 INFO L87 Difference]: Start difference. First operand 12344 states and 16411 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 17:03:37,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:03:37,335 INFO L93 Difference]: Finished difference Result 12702 states and 16967 transitions. [2021-12-21 17:03:37,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 17:03:37,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 157 [2021-12-21 17:03:37,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:03:37,385 INFO L225 Difference]: With dead ends: 12702 [2021-12-21 17:03:37,386 INFO L226 Difference]: Without dead ends: 12698 [2021-12-21 17:03:37,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-21 17:03:37,394 INFO L933 BasicCegarLoop]: 1390 mSDtfsCounter, 1268 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 4320 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 17:03:37,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 4320 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 17:03:37,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12698 states. [2021-12-21 17:03:37,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12698 to 12346. [2021-12-21 17:03:37,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12346 states, 7588 states have (on average 1.2001845018450183) internal successors, (9107), 7745 states have internal predecessors, (9107), 3634 states have call successors, (3634), 1127 states have call predecessors, (3634), 1121 states have return successors, (3671), 3593 states have call predecessors, (3671), 3631 states have call successors, (3671) [2021-12-21 17:03:37,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12346 states to 12346 states and 16412 transitions. [2021-12-21 17:03:37,931 INFO L78 Accepts]: Start accepts. Automaton has 12346 states and 16412 transitions. Word has length 157 [2021-12-21 17:03:37,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:03:37,931 INFO L470 AbstractCegarLoop]: Abstraction has 12346 states and 16412 transitions. [2021-12-21 17:03:37,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 17:03:37,932 INFO L276 IsEmpty]: Start isEmpty. Operand 12346 states and 16412 transitions. [2021-12-21 17:03:37,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-21 17:03:37,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:03:37,935 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:03:37,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 17:03:37,935 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:03:37,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:03:37,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1907625669, now seen corresponding path program 1 times [2021-12-21 17:03:37,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:03:37,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685548263] [2021-12-21 17:03:37,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:03:37,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:03:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:03:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:03:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:03:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 17:03:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 17:03:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 17:03:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 17:03:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 17:03:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 17:03:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 17:03:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 17:03:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 17:03:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 17:03:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 17:03:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 17:03:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 17:03:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 17:03:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 17:03:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-21 17:03:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 17:03:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:38,263 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-12-21 17:03:38,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:03:38,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685548263] [2021-12-21 17:03:38,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685548263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:03:38,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:03:38,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 17:03:38,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466192852] [2021-12-21 17:03:38,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:03:38,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 17:03:38,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:03:38,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 17:03:38,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 17:03:38,266 INFO L87 Difference]: Start difference. First operand 12346 states and 16412 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 17:03:40,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:03:40,097 INFO L93 Difference]: Finished difference Result 12698 states and 16963 transitions. [2021-12-21 17:03:40,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 17:03:40,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 162 [2021-12-21 17:03:40,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:03:40,150 INFO L225 Difference]: With dead ends: 12698 [2021-12-21 17:03:40,151 INFO L226 Difference]: Without dead ends: 12479 [2021-12-21 17:03:40,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-21 17:03:40,163 INFO L933 BasicCegarLoop]: 1373 mSDtfsCounter, 1275 mSDsluCounter, 2900 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 4273 SdHoareTripleChecker+Invalid, 1772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 17:03:40,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1496 Valid, 4273 Invalid, 1772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 17:03:40,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12479 states. [2021-12-21 17:03:40,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12479 to 12127. [2021-12-21 17:03:40,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12127 states, 7450 states have (on average 1.1973154362416107) internal successors, (8920), 7583 states have internal predecessors, (8920), 3567 states have call successors, (3567), 1112 states have call predecessors, (3567), 1108 states have return successors, (3607), 3551 states have call predecessors, (3607), 3567 states have call successors, (3607) [2021-12-21 17:03:40,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12127 states to 12127 states and 16094 transitions. [2021-12-21 17:03:40,836 INFO L78 Accepts]: Start accepts. Automaton has 12127 states and 16094 transitions. Word has length 162 [2021-12-21 17:03:40,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:03:40,836 INFO L470 AbstractCegarLoop]: Abstraction has 12127 states and 16094 transitions. [2021-12-21 17:03:40,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 17:03:40,837 INFO L276 IsEmpty]: Start isEmpty. Operand 12127 states and 16094 transitions. [2021-12-21 17:03:40,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-21 17:03:40,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:03:40,841 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:03:40,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 17:03:40,841 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:03:40,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:03:40,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1444168354, now seen corresponding path program 1 times [2021-12-21 17:03:40,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:03:40,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709189507] [2021-12-21 17:03:40,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:03:40,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:03:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:40,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:03:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:40,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:40,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:03:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:40,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:40,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:03:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:40,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:40,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 17:03:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:40,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 17:03:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:40,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 17:03:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:40,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 17:03:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:40,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 17:03:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:40,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 17:03:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:40,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:40,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 17:03:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:40,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 17:03:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:40,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 17:03:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:41,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:41,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:03:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:41,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:03:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:41,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 17:03:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:41,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:41,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:03:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:41,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:03:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:41,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-21 17:03:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:41,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-21 17:03:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:41,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-21 17:03:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:41,045 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-12-21 17:03:41,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:03:41,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709189507] [2021-12-21 17:03:41,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709189507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:03:41,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:03:41,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:03:41,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114670987] [2021-12-21 17:03:41,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:03:41,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:03:41,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:03:41,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:03:41,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:03:41,049 INFO L87 Difference]: Start difference. First operand 12127 states and 16094 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-21 17:03:43,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:03:43,255 INFO L93 Difference]: Finished difference Result 26599 states and 35350 transitions. [2021-12-21 17:03:43,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:03:43,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 203 [2021-12-21 17:03:43,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:03:43,324 INFO L225 Difference]: With dead ends: 26599 [2021-12-21 17:03:43,325 INFO L226 Difference]: Without dead ends: 14466 [2021-12-21 17:03:43,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:03:43,376 INFO L933 BasicCegarLoop]: 1835 mSDtfsCounter, 645 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 3707 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 17:03:43,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 3707 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 17:03:43,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14466 states. [2021-12-21 17:03:43,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14466 to 14074. [2021-12-21 17:03:43,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14074 states, 8771 states have (on average 1.2024854634591267) internal successors, (10547), 8948 states have internal predecessors, (10547), 3986 states have call successors, (3986), 1319 states have call predecessors, (3986), 1315 states have return successors, (4026), 3966 states have call predecessors, (4026), 3986 states have call successors, (4026) [2021-12-21 17:03:43,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14074 states to 14074 states and 18559 transitions. [2021-12-21 17:03:43,998 INFO L78 Accepts]: Start accepts. Automaton has 14074 states and 18559 transitions. Word has length 203 [2021-12-21 17:03:43,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:03:43,999 INFO L470 AbstractCegarLoop]: Abstraction has 14074 states and 18559 transitions. [2021-12-21 17:03:44,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-21 17:03:44,000 INFO L276 IsEmpty]: Start isEmpty. Operand 14074 states and 18559 transitions. [2021-12-21 17:03:44,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-21 17:03:44,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:03:44,004 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:03:44,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 17:03:44,004 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:03:44,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:03:44,005 INFO L85 PathProgramCache]: Analyzing trace with hash 600162852, now seen corresponding path program 1 times [2021-12-21 17:03:44,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:03:44,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922688707] [2021-12-21 17:03:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:03:44,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:03:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:03:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:03:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:03:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 17:03:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 17:03:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 17:03:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 17:03:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 17:03:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 17:03:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 17:03:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 17:03:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 17:03:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:03:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:03:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 17:03:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:03:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:03:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:03:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-21 17:03:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-21 17:03:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-21 17:03:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:03:44,225 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-12-21 17:03:44,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:03:44,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922688707] [2021-12-21 17:03:44,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922688707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:03:44,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:03:44,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:03:44,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131487806] [2021-12-21 17:03:44,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:03:44,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:03:44,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:03:44,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:03:44,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:03:44,229 INFO L87 Difference]: Start difference. First operand 14074 states and 18559 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20)