./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-mutex_drivers-net-can-mcp251x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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-mutex_drivers-net-can-mcp251x.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 34736e16fed7ff8cc88604084fa777d707e75948c95ce657a43a86ad92782d71 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 10:25:52,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 10:25:52,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 10:25:52,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 10:25:52,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 10:25:52,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 10:25:52,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 10:25:52,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 10:25:52,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 10:25:52,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 10:25:52,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 10:25:52,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 10:25:52,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 10:25:52,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 10:25:52,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 10:25:52,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 10:25:52,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 10:25:52,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 10:25:52,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 10:25:52,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 10:25:52,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 10:25:52,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 10:25:52,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 10:25:52,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 10:25:52,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 10:25:52,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 10:25:52,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 10:25:52,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 10:25:52,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 10:25:52,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 10:25:52,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 10:25:52,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 10:25:52,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 10:25:52,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 10:25:52,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 10:25:52,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 10:25:52,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 10:25:52,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 10:25:52,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 10:25:52,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 10:25:52,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 10:25:52,122 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 10:25:52,146 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 10:25:52,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 10:25:52,147 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 10:25:52,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 10:25:52,148 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 10:25:52,148 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 10:25:52,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 10:25:52,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 10:25:52,149 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 10:25:52,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 10:25:52,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 10:25:52,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 10:25:52,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 10:25:52,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 10:25:52,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 10:25:52,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 10:25:52,151 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 10:25:52,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 10:25:52,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 10:25:52,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 10:25:52,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 10:25:52,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 10:25:52,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 10:25:52,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 10:25:52,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 10:25:52,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 10:25:52,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 10:25:52,154 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 10:25:52,154 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 10:25:52,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 10:25:52,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 10:25:52,155 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34736e16fed7ff8cc88604084fa777d707e75948c95ce657a43a86ad92782d71 [2021-12-18 10:25:52,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 10:25:52,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 10:25:52,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 10:25:52,395 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 10:25:52,396 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 10:25:52,397 INFO L432 ainManager$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-mutex_drivers-net-can-mcp251x.cil.i [2021-12-18 10:25:52,449 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70a145bfe/e72994ab42f24e219b9d3435bce1cd3c/FLAGf3096bf9b [2021-12-18 10:25:53,056 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 10:25:53,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2021-12-18 10:25:53,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70a145bfe/e72994ab42f24e219b9d3435bce1cd3c/FLAGf3096bf9b [2021-12-18 10:25:53,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70a145bfe/e72994ab42f24e219b9d3435bce1cd3c [2021-12-18 10:25:53,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 10:25:53,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 10:25:53,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 10:25:53,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 10:25:53,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 10:25:53,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:25:53" (1/1) ... [2021-12-18 10:25:53,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6623e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:25:53, skipping insertion in model container [2021-12-18 10:25:53,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:25:53" (1/1) ... [2021-12-18 10:25:53,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 10:25:53,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 10:25:54,742 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-mutex_drivers-net-can-mcp251x.cil.i[278128,278141] [2021-12-18 10:25:54,744 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-mutex_drivers-net-can-mcp251x.cil.i[278294,278307] [2021-12-18 10:25:54,745 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-mutex_drivers-net-can-mcp251x.cil.i[278458,278471] [2021-12-18 10:25:54,745 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-mutex_drivers-net-can-mcp251x.cil.i[278623,278636] [2021-12-18 10:25:54,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 10:25:54,801 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 10:25:55,061 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-mutex_drivers-net-can-mcp251x.cil.i[278128,278141] [2021-12-18 10:25:55,061 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-mutex_drivers-net-can-mcp251x.cil.i[278294,278307] [2021-12-18 10:25:55,062 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-mutex_drivers-net-can-mcp251x.cil.i[278458,278471] [2021-12-18 10:25:55,062 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-mutex_drivers-net-can-mcp251x.cil.i[278623,278636] [2021-12-18 10:25:55,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 10:25:55,159 INFO L208 MainTranslator]: Completed translation [2021-12-18 10:25:55,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:25:55 WrapperNode [2021-12-18 10:25:55,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 10:25:55,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 10:25:55,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 10:25:55,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 10:25:55,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:25:55" (1/1) ... [2021-12-18 10:25:55,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:25:55" (1/1) ... [2021-12-18 10:25:55,308 INFO L137 Inliner]: procedures = 340, calls = 1497, calls flagged for inlining = 194, calls inlined = 177, statements flattened = 4027 [2021-12-18 10:25:55,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 10:25:55,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 10:25:55,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 10:25:55,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 10:25:55,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:25:55" (1/1) ... [2021-12-18 10:25:55,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:25:55" (1/1) ... [2021-12-18 10:25:55,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:25:55" (1/1) ... [2021-12-18 10:25:55,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:25:55" (1/1) ... [2021-12-18 10:25:55,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:25:55" (1/1) ... [2021-12-18 10:25:55,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:25:55" (1/1) ... [2021-12-18 10:25:55,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:25:55" (1/1) ... [2021-12-18 10:25:55,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 10:25:55,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 10:25:55,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 10:25:55,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 10:25:55,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:25:55" (1/1) ... [2021-12-18 10:25:55,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 10:25:55,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 10:25:55,496 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) [2021-12-18 10:25:55,522 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 [2021-12-18 10:25:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 10:25:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 10:25:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 10:25:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 10:25:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-18 10:25:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-18 10:25:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-18 10:25:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-18 10:25:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2021-12-18 10:25:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2021-12-18 10:25:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 10:25:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 10:25:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open_clean [2021-12-18 10:25:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open_clean [2021-12-18 10:25:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-18 10:25:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-18 10:25:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure devm_regulator_get [2021-12-18 10:25:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_regulator_get [2021-12-18 10:25:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_spi_trans [2021-12-18 10:25:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_spi_trans [2021-12-18 10:25:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2021-12-18 10:25:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2021-12-18 10:25:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-12-18 10:25:55,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-12-18 10:25:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_read_reg [2021-12-18 10:25:55,598 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_read_reg [2021-12-18 10:25:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 10:25:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-18 10:25:55,598 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-18 10:25:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 10:25:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-18 10:25:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-12-18 10:25:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_stop [2021-12-18 10:25:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_stop [2021-12-18 10:25:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_bits [2021-12-18 10:25:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_bits [2021-12-18 10:25:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-18 10:25:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-18 10:25:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-12-18 10:25:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-12-18 10:25:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx_ni [2021-12-18 10:25:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx_ni [2021-12-18 10:25:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2021-12-18 10:25:55,601 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2021-12-18 10:25:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 10:25:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 10:25:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2021-12-18 10:25:55,601 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2021-12-18 10:25:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-12-18 10:25:55,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-12-18 10:25:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-18 10:25:55,603 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-18 10:25:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-18 10:25:55,603 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-18 10:25:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2021-12-18 10:25:55,604 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2021-12-18 10:25:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-12-18 10:25:55,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-12-18 10:25:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-18 10:25:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-18 10:25:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2021-12-18 10:25:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2021-12-18 10:25:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure clk_disable_unprepare [2021-12-18 10:25:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_disable_unprepare [2021-12-18 10:25:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-12-18 10:25:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-12-18 10:25:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-18 10:25:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-18 10:25:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure clk_unprepare [2021-12-18 10:25:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_unprepare [2021-12-18 10:25:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 10:25:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_set_normal_mode [2021-12-18 10:25:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_set_normal_mode [2021-12-18 10:25:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-18 10:25:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-18 10:25:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_remove [2021-12-18 10:25:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_remove [2021-12-18 10:25:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 10:25:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-12-18 10:25:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-12-18 10:25:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_error_skb [2021-12-18 10:25:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_error_skb [2021-12-18 10:25:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_sleep [2021-12-18 10:25:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_sleep [2021-12-18 10:25:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-18 10:25:55,609 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-18 10:25:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 10:25:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-12-18 10:25:55,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-12-18 10:25:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_clean [2021-12-18 10:25:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_clean [2021-12-18 10:25:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2021-12-18 10:25:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2021-12-18 10:25:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 10:25:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 10:25:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-12-18 10:25:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-12-18 10:25:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_power_enable [2021-12-18 10:25:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_power_enable [2021-12-18 10:25:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-12-18 10:25:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-12-18 10:25:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_suspend [2021-12-18 10:25:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_suspend [2021-12-18 10:25:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 10:25:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mcp_lock_of_mcp251x_priv [2021-12-18 10:25:55,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mcp_lock_of_mcp251x_priv [2021-12-18 10:25:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open [2021-12-18 10:25:55,612 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open [2021-12-18 10:25:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_probe [2021-12-18 10:25:55,612 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_probe [2021-12-18 10:25:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mcp_lock_of_mcp251x_priv [2021-12-18 10:25:55,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mcp_lock_of_mcp251x_priv [2021-12-18 10:25:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 10:25:55,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 10:25:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_resume [2021-12-18 10:25:55,616 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_resume [2021-12-18 10:25:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 10:25:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-12-18 10:25:55,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-12-18 10:25:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-12-18 10:25:55,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-12-18 10:25:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-12-18 10:25:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-12-18 10:25:55,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-12-18 10:25:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-12-18 10:25:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_reset [2021-12-18 10:25:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_reset [2021-12-18 10:25:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 10:25:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-18 10:25:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-18 10:25:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-18 10:25:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-18 10:25:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 10:25:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2021-12-18 10:25:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2021-12-18 10:25:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 10:25:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 10:25:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-18 10:25:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-18 10:25:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2021-12-18 10:25:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2021-12-18 10:25:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-18 10:25:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-18 10:25:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_setup [2021-12-18 10:25:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_setup [2021-12-18 10:25:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-12-18 10:25:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-12-18 10:25:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2021-12-18 10:25:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2021-12-18 10:25:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-18 10:25:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-18 10:25:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-18 10:25:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-18 10:25:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_rx [2021-12-18 10:25:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_rx [2021-12-18 10:25:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_is_2510 [2021-12-18 10:25:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_is_2510 [2021-12-18 10:25:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 10:25:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2021-12-18 10:25:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2021-12-18 10:25:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_reg [2021-12-18 10:25:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_reg [2021-12-18 10:25:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-12-18 10:25:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-12-18 10:25:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-18 10:25:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-18 10:25:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 10:25:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 10:25:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-18 10:25:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-18 10:25:56,116 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 10:25:56,134 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 10:25:56,387 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 10:26:35,710 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-12-18 10:26:36,492 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 10:26:36,505 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 10:26:36,505 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 10:26:36,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:26:36 BoogieIcfgContainer [2021-12-18 10:26:36,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 10:26:36,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 10:26:36,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 10:26:36,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 10:26:36,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:25:53" (1/3) ... [2021-12-18 10:26:36,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420e9cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:26:36, skipping insertion in model container [2021-12-18 10:26:36,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:25:55" (2/3) ... [2021-12-18 10:26:36,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420e9cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:26:36, skipping insertion in model container [2021-12-18 10:26:36,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:26:36" (3/3) ... [2021-12-18 10:26:36,514 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2021-12-18 10:26:36,517 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 10:26:36,517 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-12-18 10:26:36,552 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 10:26:36,556 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 [2021-12-18 10:26:36,556 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-18 10:26:36,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 1470 states, 1032 states have (on average 1.2848837209302326) internal successors, (1326), 1055 states have internal predecessors, (1326), 359 states have call successors, (359), 77 states have call predecessors, (359), 76 states have return successors, (350), 344 states have call predecessors, (350), 350 states have call successors, (350) [2021-12-18 10:26:36,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-18 10:26:36,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 10:26:36,601 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 10:26:36,602 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-18 10:26:36,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 10:26:36,606 INFO L85 PathProgramCache]: Analyzing trace with hash -809802598, now seen corresponding path program 1 times [2021-12-18 10:26:36,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 10:26:36,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343217186] [2021-12-18 10:26:36,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 10:26:36,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 10:26:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 10:26:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 10:26:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 10:26:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 10:26:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 10:26:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 10:26:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 10:26:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 10:26:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 10:26:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 10:26:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 10:26:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 10:26:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 10:26:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2021-12-18 10:26:37,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 10:26:37,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343217186] [2021-12-18 10:26:37,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343217186] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 10:26:37,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 10:26:37,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 10:26:37,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307765028] [2021-12-18 10:26:37,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 10:26:37,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 10:26:37,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 10:26:37,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 10:26:37,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 10:26:37,455 INFO L87 Difference]: Start difference. First operand has 1470 states, 1032 states have (on average 1.2848837209302326) internal successors, (1326), 1055 states have internal predecessors, (1326), 359 states have call successors, (359), 77 states have call predecessors, (359), 76 states have return successors, (350), 344 states have call predecessors, (350), 350 states have call successors, (350) Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-12-18 10:26:39,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:26:41,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:26:49,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 10:26:49,376 INFO L93 Difference]: Finished difference Result 4247 states and 6075 transitions. [2021-12-18 10:26:49,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 10:26:49,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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 149 [2021-12-18 10:26:49,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 10:26:49,410 INFO L225 Difference]: With dead ends: 4247 [2021-12-18 10:26:49,410 INFO L226 Difference]: Without dead ends: 2786 [2021-12-18 10:26:49,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 10:26:49,423 INFO L933 BasicCegarLoop]: 2224 mSDtfsCounter, 2267 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 927 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 4893 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-12-18 10:26:49,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2500 Valid, 4893 Invalid, 1942 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [927 Valid, 1013 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2021-12-18 10:26:49,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-12-18 10:26:49,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2723. [2021-12-18 10:26:49,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2723 states, 1926 states have (on average 1.2725856697819315) internal successors, (2451), 1973 states have internal predecessors, (2451), 645 states have call successors, (645), 149 states have call predecessors, (645), 149 states have return successors, (735), 623 states have call predecessors, (735), 641 states have call successors, (735) [2021-12-18 10:26:49,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3831 transitions. [2021-12-18 10:26:49,574 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3831 transitions. Word has length 149 [2021-12-18 10:26:49,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 10:26:49,575 INFO L470 AbstractCegarLoop]: Abstraction has 2723 states and 3831 transitions. [2021-12-18 10:26:49,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-12-18 10:26:49,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3831 transitions. [2021-12-18 10:26:49,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-18 10:26:49,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 10:26:49,579 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 10:26:49,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 10:26:49,579 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-18 10:26:49,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 10:26:49,580 INFO L85 PathProgramCache]: Analyzing trace with hash -692997161, now seen corresponding path program 1 times [2021-12-18 10:26:49,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 10:26:49,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077176666] [2021-12-18 10:26:49,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 10:26:49,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 10:26:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 10:26:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 10:26:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 10:26:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 10:26:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 10:26:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 10:26:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 10:26:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 10:26:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 10:26:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 10:26:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 10:26:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:26:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 10:26:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-18 10:26:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:26:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2021-12-18 10:26:50,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 10:26:50,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077176666] [2021-12-18 10:26:50,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077176666] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 10:26:50,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 10:26:50,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 10:26:50,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800438694] [2021-12-18 10:26:50,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 10:26:50,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 10:26:50,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 10:26:50,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 10:26:50,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 10:26:50,211 INFO L87 Difference]: Start difference. First operand 2723 states and 3831 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, (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) [2021-12-18 10:26:52,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:26:54,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:27:01,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:27:04,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 10:27:04,600 INFO L93 Difference]: Finished difference Result 8064 states and 11381 transitions. [2021-12-18 10:27:04,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 10:27:04,600 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, (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 151 [2021-12-18 10:27:04,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 10:27:04,631 INFO L225 Difference]: With dead ends: 8064 [2021-12-18 10:27:04,631 INFO L226 Difference]: Without dead ends: 5368 [2021-12-18 10:27:04,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 10:27:04,647 INFO L933 BasicCegarLoop]: 2178 mSDtfsCounter, 2323 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 893 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2576 SdHoareTripleChecker+Valid, 4793 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 893 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2021-12-18 10:27:04,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2576 Valid, 4793 Invalid, 1928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [893 Valid, 1033 Invalid, 2 Unknown, 0 Unchecked, 13.9s Time] [2021-12-18 10:27:04,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5368 states. [2021-12-18 10:27:04,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5368 to 5276. [2021-12-18 10:27:04,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5276 states, 3744 states have (on average 1.2732371794871795) internal successors, (4767), 3830 states have internal predecessors, (4767), 1234 states have call successors, (1234), 294 states have call predecessors, (1234), 295 states have return successors, (1418), 1197 states have call predecessors, (1418), 1230 states have call successors, (1418) [2021-12-18 10:27:04,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5276 states to 5276 states and 7419 transitions. [2021-12-18 10:27:04,864 INFO L78 Accepts]: Start accepts. Automaton has 5276 states and 7419 transitions. Word has length 151 [2021-12-18 10:27:04,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 10:27:04,865 INFO L470 AbstractCegarLoop]: Abstraction has 5276 states and 7419 transitions. [2021-12-18 10:27:04,865 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, (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) [2021-12-18 10:27:04,866 INFO L276 IsEmpty]: Start isEmpty. Operand 5276 states and 7419 transitions. [2021-12-18 10:27:04,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-18 10:27:04,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 10:27:04,871 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 10:27:04,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 10:27:04,871 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-18 10:27:04,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 10:27:04,872 INFO L85 PathProgramCache]: Analyzing trace with hash -725158502, now seen corresponding path program 1 times [2021-12-18 10:27:04,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 10:27:04,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344049711] [2021-12-18 10:27:04,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 10:27:04,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 10:27:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 10:27:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 10:27:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 10:27:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 10:27:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 10:27:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 10:27:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 10:27:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 10:27:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 10:27:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 10:27:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 10:27:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 10:27:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2021-12-18 10:27:05,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 10:27:05,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344049711] [2021-12-18 10:27:05,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344049711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 10:27:05,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 10:27:05,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 10:27:05,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317168719] [2021-12-18 10:27:05,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 10:27:05,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 10:27:05,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 10:27:05,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 10:27:05,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 10:27:05,481 INFO L87 Difference]: Start difference. First operand 5276 states and 7419 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-18 10:27:07,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:27:09,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:27:13,818 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:27:19,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 10:27:19,414 INFO L93 Difference]: Finished difference Result 15278 states and 21428 transitions. [2021-12-18 10:27:19,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 10:27:19,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 151 [2021-12-18 10:27:19,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 10:27:19,470 INFO L225 Difference]: With dead ends: 15278 [2021-12-18 10:27:19,470 INFO L226 Difference]: Without dead ends: 10029 [2021-12-18 10:27:19,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 10:27:19,500 INFO L933 BasicCegarLoop]: 2177 mSDtfsCounter, 2126 mSDsluCounter, 2570 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 914 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2359 SdHoareTripleChecker+Valid, 4747 SdHoareTripleChecker+Invalid, 2042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-12-18 10:27:19,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2359 Valid, 4747 Invalid, 2042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 1126 Invalid, 2 Unknown, 0 Unchecked, 13.5s Time] [2021-12-18 10:27:19,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10029 states. [2021-12-18 10:27:19,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10029 to 9828. [2021-12-18 10:27:19,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9828 states, 6918 states have (on average 1.2643827695865857) internal successors, (8747), 7096 states have internal predecessors, (8747), 2322 states have call successors, (2322), 582 states have call predecessors, (2322), 585 states have return successors, (2554), 2241 states have call predecessors, (2554), 2318 states have call successors, (2554) [2021-12-18 10:27:19,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9828 states to 9828 states and 13623 transitions. [2021-12-18 10:27:19,880 INFO L78 Accepts]: Start accepts. Automaton has 9828 states and 13623 transitions. Word has length 151 [2021-12-18 10:27:19,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 10:27:19,882 INFO L470 AbstractCegarLoop]: Abstraction has 9828 states and 13623 transitions. [2021-12-18 10:27:19,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-18 10:27:19,883 INFO L276 IsEmpty]: Start isEmpty. Operand 9828 states and 13623 transitions. [2021-12-18 10:27:19,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-18 10:27:19,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 10:27:19,884 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 10:27:19,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 10:27:19,885 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-18 10:27:19,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 10:27:19,885 INFO L85 PathProgramCache]: Analyzing trace with hash -500577410, now seen corresponding path program 1 times [2021-12-18 10:27:19,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 10:27:19,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030130952] [2021-12-18 10:27:19,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 10:27:19,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 10:27:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 10:27:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 10:27:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 10:27:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 10:27:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 10:27:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 10:27:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 10:27:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 10:27:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 10:27:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 10:27:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 10:27:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 10:27:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2021-12-18 10:27:20,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 10:27:20,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030130952] [2021-12-18 10:27:20,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030130952] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 10:27:20,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 10:27:20,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 10:27:20,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083761124] [2021-12-18 10:27:20,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 10:27:20,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 10:27:20,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 10:27:20,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 10:27:20,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 10:27:20,329 INFO L87 Difference]: Start difference. First operand 9828 states and 13623 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-18 10:27:22,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:27:24,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:27:28,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:27:35,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 10:27:35,295 INFO L93 Difference]: Finished difference Result 23932 states and 33114 transitions. [2021-12-18 10:27:35,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 10:27:35,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 152 [2021-12-18 10:27:35,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 10:27:35,364 INFO L225 Difference]: With dead ends: 23932 [2021-12-18 10:27:35,364 INFO L226 Difference]: Without dead ends: 14131 [2021-12-18 10:27:35,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 10:27:35,399 INFO L933 BasicCegarLoop]: 2187 mSDtfsCounter, 2256 mSDsluCounter, 2626 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 912 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2502 SdHoareTripleChecker+Valid, 4813 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 912 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2021-12-18 10:27:35,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2502 Valid, 4813 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [912 Valid, 1060 Invalid, 2 Unknown, 0 Unchecked, 14.4s Time] [2021-12-18 10:27:35,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14131 states. [2021-12-18 10:27:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14131 to 13894. [2021-12-18 10:27:35,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13894 states, 9762 states have (on average 1.2551731202622414) internal successors, (12253), 10022 states have internal predecessors, (12253), 3258 states have call successors, (3258), 866 states have call predecessors, (3258), 871 states have return successors, (3568), 3127 states have call predecessors, (3568), 3254 states have call successors, (3568) [2021-12-18 10:27:35,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13894 states to 13894 states and 19079 transitions. [2021-12-18 10:27:35,834 INFO L78 Accepts]: Start accepts. Automaton has 13894 states and 19079 transitions. Word has length 152 [2021-12-18 10:27:35,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 10:27:35,835 INFO L470 AbstractCegarLoop]: Abstraction has 13894 states and 19079 transitions. [2021-12-18 10:27:35,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-18 10:27:35,835 INFO L276 IsEmpty]: Start isEmpty. Operand 13894 states and 19079 transitions. [2021-12-18 10:27:35,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-18 10:27:35,837 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 10:27:35,837 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 10:27:35,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 10:27:35,838 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-18 10:27:35,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 10:27:35,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1971282291, now seen corresponding path program 1 times [2021-12-18 10:27:35,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 10:27:35,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601557584] [2021-12-18 10:27:35,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 10:27:35,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 10:27:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 10:27:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 10:27:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 10:27:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 10:27:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 10:27:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 10:27:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 10:27:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 10:27:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 10:27:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 10:27:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 10:27:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:27:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 10:27:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-18 10:27:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 10:27:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:27:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2021-12-18 10:27:36,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 10:27:36,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601557584] [2021-12-18 10:27:36,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601557584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 10:27:36,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 10:27:36,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 10:27:36,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562490241] [2021-12-18 10:27:36,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 10:27:36,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 10:27:36,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 10:27:36,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 10:27:36,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-18 10:27:36,555 INFO L87 Difference]: Start difference. First operand 13894 states and 19079 transitions. Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-18 10:27:38,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:27:40,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:27:44,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:28:05,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 10:28:05,080 INFO L93 Difference]: Finished difference Result 54919 states and 76081 transitions. [2021-12-18 10:28:05,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 10:28:05,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 160 [2021-12-18 10:28:05,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 10:28:05,261 INFO L225 Difference]: With dead ends: 54919 [2021-12-18 10:28:05,261 INFO L226 Difference]: Without dead ends: 41052 [2021-12-18 10:28:05,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-12-18 10:28:05,319 INFO L933 BasicCegarLoop]: 2512 mSDtfsCounter, 6046 mSDsluCounter, 5673 mSDsCounter, 0 mSdLazyCounter, 3582 mSolverCounterSat, 2207 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6574 SdHoareTripleChecker+Valid, 8185 SdHoareTripleChecker+Invalid, 5792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2207 IncrementalHoareTripleChecker+Valid, 3582 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2021-12-18 10:28:05,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6574 Valid, 8185 Invalid, 5792 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2207 Valid, 3582 Invalid, 3 Unknown, 0 Unchecked, 27.2s Time] [2021-12-18 10:28:05,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41052 states. [2021-12-18 10:28:06,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41052 to 39986. [2021-12-18 10:28:06,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39986 states, 28098 states have (on average 1.2547868175670867) internal successors, (35257), 28922 states have internal predecessors, (35257), 9354 states have call successors, (9354), 2562 states have call predecessors, (9354), 2531 states have return successors, (10812), 8843 states have call predecessors, (10812), 9350 states have call successors, (10812) [2021-12-18 10:28:06,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39986 states to 39986 states and 55423 transitions. [2021-12-18 10:28:06,861 INFO L78 Accepts]: Start accepts. Automaton has 39986 states and 55423 transitions. Word has length 160 [2021-12-18 10:28:06,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 10:28:06,862 INFO L470 AbstractCegarLoop]: Abstraction has 39986 states and 55423 transitions. [2021-12-18 10:28:06,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-18 10:28:06,862 INFO L276 IsEmpty]: Start isEmpty. Operand 39986 states and 55423 transitions. [2021-12-18 10:28:06,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-18 10:28:06,865 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 10:28:06,865 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 11, 11, 11, 11, 11, 11, 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] [2021-12-18 10:28:06,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 10:28:06,866 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-18 10:28:06,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 10:28:06,866 INFO L85 PathProgramCache]: Analyzing trace with hash 421707479, now seen corresponding path program 1 times [2021-12-18 10:28:06,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 10:28:06,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623751299] [2021-12-18 10:28:06,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 10:28:06,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 10:28:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 10:28:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 10:28:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 10:28:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 10:28:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 10:28:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 10:28:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 10:28:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 10:28:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 10:28:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 10:28:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 10:28:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 10:28:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 10:28:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-18 10:28:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2021-12-18 10:28:07,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 10:28:07,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623751299] [2021-12-18 10:28:07,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623751299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 10:28:07,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 10:28:07,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 10:28:07,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113218883] [2021-12-18 10:28:07,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 10:28:07,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 10:28:07,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 10:28:07,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 10:28:07,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 10:28:07,292 INFO L87 Difference]: Start difference. First operand 39986 states and 55423 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-18 10:28:09,330 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:28:11,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:28:16,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:28:22,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 10:28:22,724 INFO L93 Difference]: Finished difference Result 97495 states and 134996 transitions. [2021-12-18 10:28:22,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 10:28:22,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 176 [2021-12-18 10:28:22,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 10:28:23,073 INFO L225 Difference]: With dead ends: 97495 [2021-12-18 10:28:23,074 INFO L226 Difference]: Without dead ends: 57536 [2021-12-18 10:28:23,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 10:28:23,338 INFO L933 BasicCegarLoop]: 2539 mSDtfsCounter, 2246 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 847 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2497 SdHoareTripleChecker+Valid, 5405 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 847 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2021-12-18 10:28:23,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2497 Valid, 5405 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [847 Valid, 1058 Invalid, 2 Unknown, 0 Unchecked, 13.9s Time] [2021-12-18 10:28:23,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57536 states. [2021-12-18 10:28:24,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57536 to 56517. [2021-12-18 10:28:24,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56517 states, 39925 states have (on average 1.2513212273011898) internal successors, (49959), 41148 states have internal predecessors, (49959), 12972 states have call successors, (12972), 3673 states have call predecessors, (12972), 3617 states have return successors, (14798), 12200 states have call predecessors, (14798), 12968 states have call successors, (14798) [2021-12-18 10:28:25,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56517 states to 56517 states and 77729 transitions. [2021-12-18 10:28:25,379 INFO L78 Accepts]: Start accepts. Automaton has 56517 states and 77729 transitions. Word has length 176 [2021-12-18 10:28:25,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 10:28:25,380 INFO L470 AbstractCegarLoop]: Abstraction has 56517 states and 77729 transitions. [2021-12-18 10:28:25,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-18 10:28:25,380 INFO L276 IsEmpty]: Start isEmpty. Operand 56517 states and 77729 transitions. [2021-12-18 10:28:25,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-18 10:28:25,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 10:28:25,383 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 4, 4, 4, 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] [2021-12-18 10:28:25,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 10:28:25,383 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-18 10:28:25,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 10:28:25,383 INFO L85 PathProgramCache]: Analyzing trace with hash -2111332940, now seen corresponding path program 1 times [2021-12-18 10:28:25,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 10:28:25,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787571777] [2021-12-18 10:28:25,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 10:28:25,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 10:28:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:25,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 10:28:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:25,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:25,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 10:28:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:25,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:25,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 10:28:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:25,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:25,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 10:28:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:25,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:25,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 10:28:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:25,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:25,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 10:28:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 10:28:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 10:28:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 10:28:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 10:28:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 10:28:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 10:28:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 10:28:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 10:28:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 10:28:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 10:28:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-18 10:28:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 10:28:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-18 10:28:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2021-12-18 10:28:26,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 10:28:26,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787571777] [2021-12-18 10:28:26,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787571777] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 10:28:26,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 10:28:26,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 10:28:26,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86603039] [2021-12-18 10:28:26,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 10:28:26,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 10:28:26,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 10:28:26,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 10:28:26,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 10:28:26,104 INFO L87 Difference]: Start difference. First operand 56517 states and 77729 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-18 10:28:28,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:28:30,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:28:42,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 10:28:42,246 INFO L93 Difference]: Finished difference Result 160558 states and 221969 transitions. [2021-12-18 10:28:42,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 10:28:42,247 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 209 [2021-12-18 10:28:42,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 10:28:42,984 INFO L225 Difference]: With dead ends: 160558 [2021-12-18 10:28:42,984 INFO L226 Difference]: Without dead ends: 107778 [2021-12-18 10:28:43,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 10:28:43,137 INFO L933 BasicCegarLoop]: 3693 mSDtfsCounter, 1953 mSDsluCounter, 3506 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 577 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2201 SdHoareTripleChecker+Valid, 7199 SdHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2021-12-18 10:28:43,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2201 Valid, 7199 Invalid, 1646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 1067 Invalid, 2 Unknown, 0 Unchecked, 13.6s Time] [2021-12-18 10:28:43,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107778 states. [2021-12-18 10:28:45,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107778 to 105920. [2021-12-18 10:28:46,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105920 states, 74912 states have (on average 1.2513615976078598) internal successors, (93742), 77060 states have internal predecessors, (93742), 24220 states have call successors, (24220), 6886 states have call predecessors, (24220), 6785 states have return successors, (27870), 22946 states have call predecessors, (27870), 24216 states have call successors, (27870) [2021-12-18 10:28:47,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105920 states to 105920 states and 145832 transitions. [2021-12-18 10:28:47,037 INFO L78 Accepts]: Start accepts. Automaton has 105920 states and 145832 transitions. Word has length 209 [2021-12-18 10:28:47,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 10:28:47,038 INFO L470 AbstractCegarLoop]: Abstraction has 105920 states and 145832 transitions. [2021-12-18 10:28:47,038 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-18 10:28:47,039 INFO L276 IsEmpty]: Start isEmpty. Operand 105920 states and 145832 transitions. [2021-12-18 10:28:47,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-18 10:28:47,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 10:28:47,041 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 4, 4, 4, 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] [2021-12-18 10:28:47,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 10:28:47,042 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-18 10:28:47,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 10:28:47,042 INFO L85 PathProgramCache]: Analyzing trace with hash -188104906, now seen corresponding path program 1 times [2021-12-18 10:28:47,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 10:28:47,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659183866] [2021-12-18 10:28:47,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 10:28:47,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 10:28:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 10:28:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 10:28:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 10:28:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 10:28:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 10:28:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 10:28:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 10:28:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 10:28:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 10:28:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 10:28:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 10:28:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 10:28:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 10:28:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 10:28:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 10:28:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 10:28:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:28:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-18 10:28:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 10:28:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-18 10:28:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:28:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2021-12-18 10:28:47,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 10:28:47,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659183866] [2021-12-18 10:28:47,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659183866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 10:28:47,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 10:28:47,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 10:28:47,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734758810] [2021-12-18 10:28:47,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 10:28:47,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 10:28:47,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 10:28:47,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 10:28:47,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 10:28:47,872 INFO L87 Difference]: Start difference. First operand 105920 states and 145832 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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) [2021-12-18 10:28:49,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:28:55,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:29:01,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 10:29:01,246 INFO L93 Difference]: Finished difference Result 107780 states and 148764 transitions. [2021-12-18 10:29:01,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 10:29:01,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 209 [2021-12-18 10:29:01,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 10:29:01,794 INFO L225 Difference]: With dead ends: 107780 [2021-12-18 10:29:01,794 INFO L226 Difference]: Without dead ends: 107778 [2021-12-18 10:29:01,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-18 10:29:01,860 INFO L933 BasicCegarLoop]: 1914 mSDtfsCounter, 2038 mSDsluCounter, 4238 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 582 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2229 SdHoareTripleChecker+Valid, 6152 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-12-18 10:29:01,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2229 Valid, 6152 Invalid, 1702 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [582 Valid, 1119 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2021-12-18 10:29:01,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107778 states. [2021-12-18 10:29:04,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107778 to 105924. [2021-12-18 10:29:05,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105924 states, 74915 states have (on average 1.2513515317359674) internal successors, (93745), 77063 states have internal predecessors, (93745), 24220 states have call successors, (24220), 6887 states have call predecessors, (24220), 6786 states have return successors, (27870), 22946 states have call predecessors, (27870), 24216 states have call successors, (27870) [2021-12-18 10:29:05,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105924 states to 105924 states and 145835 transitions. [2021-12-18 10:29:05,474 INFO L78 Accepts]: Start accepts. Automaton has 105924 states and 145835 transitions. Word has length 209 [2021-12-18 10:29:05,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 10:29:05,474 INFO L470 AbstractCegarLoop]: Abstraction has 105924 states and 145835 transitions. [2021-12-18 10:29:05,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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) [2021-12-18 10:29:05,475 INFO L276 IsEmpty]: Start isEmpty. Operand 105924 states and 145835 transitions. [2021-12-18 10:29:05,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-12-18 10:29:05,478 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 10:29:05,478 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 4, 4, 4, 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] [2021-12-18 10:29:05,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 10:29:05,478 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-18 10:29:05,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 10:29:05,479 INFO L85 PathProgramCache]: Analyzing trace with hash -2046337942, now seen corresponding path program 1 times [2021-12-18 10:29:05,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 10:29:05,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071046215] [2021-12-18 10:29:05,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 10:29:05,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 10:29:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 10:29:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 10:29:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 10:29:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 10:29:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 10:29:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 10:29:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 10:29:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 10:29:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 10:29:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 10:29:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 10:29:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 10:29:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 10:29:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 10:29:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 10:29:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 10:29:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-18 10:29:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 10:29:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-18 10:29:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-12-18 10:29:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2021-12-18 10:29:06,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 10:29:06,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071046215] [2021-12-18 10:29:06,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071046215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 10:29:06,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 10:29:06,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 10:29:06,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464259417] [2021-12-18 10:29:06,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 10:29:06,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 10:29:06,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 10:29:06,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 10:29:06,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 10:29:06,468 INFO L87 Difference]: Start difference. First operand 105924 states and 145835 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 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) [2021-12-18 10:29:08,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:29:15,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:29:16,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:29:21,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 10:29:21,341 INFO L93 Difference]: Finished difference Result 107784 states and 148767 transitions. [2021-12-18 10:29:21,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 10:29:21,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 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 214 [2021-12-18 10:29:21,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 10:29:21,943 INFO L225 Difference]: With dead ends: 107784 [2021-12-18 10:29:21,943 INFO L226 Difference]: Without dead ends: 107782 [2021-12-18 10:29:21,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-18 10:29:21,994 INFO L933 BasicCegarLoop]: 1917 mSDtfsCounter, 2030 mSDsluCounter, 4238 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 581 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2221 SdHoareTripleChecker+Valid, 6155 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-12-18 10:29:21,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2221 Valid, 6155 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 1119 Invalid, 1 Unknown, 0 Unchecked, 12.2s Time] [2021-12-18 10:29:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107782 states. [2021-12-18 10:29:24,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107782 to 105928. [2021-12-18 10:29:24,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105928 states, 74918 states have (on average 1.251341466670226) internal successors, (93748), 77066 states have internal predecessors, (93748), 24220 states have call successors, (24220), 6888 states have call predecessors, (24220), 6787 states have return successors, (27870), 22946 states have call predecessors, (27870), 24216 states have call successors, (27870) [2021-12-18 10:29:25,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105928 states to 105928 states and 145838 transitions. [2021-12-18 10:29:25,596 INFO L78 Accepts]: Start accepts. Automaton has 105928 states and 145838 transitions. Word has length 214 [2021-12-18 10:29:25,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 10:29:25,597 INFO L470 AbstractCegarLoop]: Abstraction has 105928 states and 145838 transitions. [2021-12-18 10:29:25,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 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) [2021-12-18 10:29:25,598 INFO L276 IsEmpty]: Start isEmpty. Operand 105928 states and 145838 transitions. [2021-12-18 10:29:25,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-12-18 10:29:25,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 10:29:25,601 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 4, 4, 4, 3, 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] [2021-12-18 10:29:25,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 10:29:25,601 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-18 10:29:25,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 10:29:25,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1956444022, now seen corresponding path program 1 times [2021-12-18 10:29:25,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 10:29:25,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457414513] [2021-12-18 10:29:25,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 10:29:25,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 10:29:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 10:29:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 10:29:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 10:29:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 10:29:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 10:29:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 10:29:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 10:29:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 10:29:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 10:29:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 10:29:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 10:29:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 10:29:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 10:29:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 10:29:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 10:29:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 10:29:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-18 10:29:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 10:29:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-18 10:29:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-12-18 10:29:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-18 10:29:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2021-12-18 10:29:26,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 10:29:26,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457414513] [2021-12-18 10:29:26,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457414513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 10:29:26,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 10:29:26,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 10:29:26,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582986182] [2021-12-18 10:29:26,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 10:29:26,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 10:29:26,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 10:29:26,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 10:29:26,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 10:29:26,252 INFO L87 Difference]: Start difference. First operand 105928 states and 145838 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 10:29:28,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:29:43,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 10:29:43,036 INFO L93 Difference]: Finished difference Result 119324 states and 161105 transitions. [2021-12-18 10:29:43,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 10:29:43,036 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 219 [2021-12-18 10:29:43,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 10:29:43,554 INFO L225 Difference]: With dead ends: 119324 [2021-12-18 10:29:43,554 INFO L226 Difference]: Without dead ends: 119320 [2021-12-18 10:29:43,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-18 10:29:43,625 INFO L933 BasicCegarLoop]: 2012 mSDtfsCounter, 1639 mSDsluCounter, 4924 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 563 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1784 SdHoareTripleChecker+Valid, 6936 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2021-12-18 10:29:43,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1784 Valid, 6936 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 1335 Invalid, 1 Unknown, 0 Unchecked, 14.0s Time] [2021-12-18 10:29:43,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119320 states. [2021-12-18 10:29:47,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119320 to 117292. [2021-12-18 10:29:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117292 states, 82199 states have (on average 1.239808270173603) internal successors, (101911), 84380 states have internal predecessors, (101911), 26263 states have call successors, (26263), 9027 states have call predecessors, (26263), 8827 states have return successors, (29913), 24891 states have call predecessors, (29913), 26259 states have call successors, (29913) [2021-12-18 10:29:47,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117292 states to 117292 states and 158087 transitions. [2021-12-18 10:29:47,847 INFO L78 Accepts]: Start accepts. Automaton has 117292 states and 158087 transitions. Word has length 219 [2021-12-18 10:29:47,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 10:29:47,848 INFO L470 AbstractCegarLoop]: Abstraction has 117292 states and 158087 transitions. [2021-12-18 10:29:47,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 10:29:47,848 INFO L276 IsEmpty]: Start isEmpty. Operand 117292 states and 158087 transitions. [2021-12-18 10:29:47,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-18 10:29:47,852 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 10:29:47,852 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2021-12-18 10:29:47,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 10:29:47,852 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-18 10:29:47,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 10:29:47,853 INFO L85 PathProgramCache]: Analyzing trace with hash -286819414, now seen corresponding path program 1 times [2021-12-18 10:29:47,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 10:29:47,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099581596] [2021-12-18 10:29:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 10:29:47,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 10:29:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 10:29:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 10:29:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 10:29:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 10:29:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 10:29:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 10:29:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 10:29:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 10:29:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 10:29:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 10:29:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 10:29:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 10:29:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 10:29:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 10:29:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 10:29:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 10:29:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:29:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-18 10:29:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 10:29:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-18 10:29:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-12-18 10:29:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-18 10:29:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-18 10:29:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:29:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2021-12-18 10:29:48,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 10:29:48,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099581596] [2021-12-18 10:29:48,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099581596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 10:29:48,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 10:29:48,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 10:29:48,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159682689] [2021-12-18 10:29:48,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 10:29:48,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 10:29:48,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 10:29:48,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 10:29:48,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 10:29:48,487 INFO L87 Difference]: Start difference. First operand 117292 states and 158087 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-18 10:29:50,525 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:29:55,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:30:02,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 10:30:02,955 INFO L93 Difference]: Finished difference Result 119320 states and 161101 transitions. [2021-12-18 10:30:02,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 10:30:02,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 224 [2021-12-18 10:30:02,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 10:30:03,425 INFO L225 Difference]: With dead ends: 119320 [2021-12-18 10:30:03,426 INFO L226 Difference]: Without dead ends: 118433 [2021-12-18 10:30:03,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-18 10:30:03,485 INFO L933 BasicCegarLoop]: 1914 mSDtfsCounter, 2024 mSDsluCounter, 4238 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 579 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2215 SdHoareTripleChecker+Valid, 6152 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-12-18 10:30:03,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2215 Valid, 6152 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 1114 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2021-12-18 10:30:03,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118433 states. [2021-12-18 10:30:07,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118433 to 116405. [2021-12-18 10:30:07,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116405 states, 81659 states have (on average 1.239042848920511) internal successors, (101179), 83696 states have internal predecessors, (101179), 25968 states have call successors, (25968), 8974 states have call predecessors, (25968), 8776 states have return successors, (29622), 24741 states have call predecessors, (29622), 25968 states have call successors, (29622) [2021-12-18 10:30:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116405 states to 116405 states and 156769 transitions. [2021-12-18 10:30:08,022 INFO L78 Accepts]: Start accepts. Automaton has 116405 states and 156769 transitions. Word has length 224 [2021-12-18 10:30:08,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 10:30:08,023 INFO L470 AbstractCegarLoop]: Abstraction has 116405 states and 156769 transitions. [2021-12-18 10:30:08,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-18 10:30:08,023 INFO L276 IsEmpty]: Start isEmpty. Operand 116405 states and 156769 transitions. [2021-12-18 10:30:08,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-18 10:30:08,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 10:30:08,027 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 11, 11, 11, 11, 11, 11, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 10:30:08,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 10:30:08,027 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-18 10:30:08,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 10:30:08,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1170404808, now seen corresponding path program 1 times [2021-12-18 10:30:08,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 10:30:08,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117616586] [2021-12-18 10:30:08,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 10:30:08,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 10:30:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 10:30:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 10:30:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 10:30:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 10:30:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 10:30:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 10:30:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 10:30:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 10:30:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 10:30:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 10:30:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 10:30:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 10:30:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 10:30:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 10:30:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 10:30:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 10:30:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-18 10:30:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 10:30:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 10:30:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-18 10:30:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:08,531 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2021-12-18 10:30:08,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 10:30:08,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117616586] [2021-12-18 10:30:08,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117616586] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 10:30:08,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 10:30:08,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 10:30:08,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407830799] [2021-12-18 10:30:08,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 10:30:08,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 10:30:08,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 10:30:08,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 10:30:08,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 10:30:08,533 INFO L87 Difference]: Start difference. First operand 116405 states and 156769 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 10:30:10,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:30:12,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:30:18,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:30:28,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 10:30:28,934 INFO L93 Difference]: Finished difference Result 286630 states and 387010 transitions. [2021-12-18 10:30:28,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 10:30:28,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 232 [2021-12-18 10:30:28,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 10:30:30,012 INFO L225 Difference]: With dead ends: 286630 [2021-12-18 10:30:30,012 INFO L226 Difference]: Without dead ends: 173924 [2021-12-18 10:30:30,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 10:30:30,353 INFO L933 BasicCegarLoop]: 3657 mSDtfsCounter, 1934 mSDsluCounter, 3492 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 562 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2176 SdHoareTripleChecker+Valid, 7149 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2021-12-18 10:30:30,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2176 Valid, 7149 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 1034 Invalid, 3 Unknown, 0 Unchecked, 15.1s Time] [2021-12-18 10:30:30,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173924 states. [2021-12-18 10:30:35,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173924 to 170908. [2021-12-18 10:30:36,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170908 states, 119776 states have (on average 1.2395471546887524) internal successors, (148468), 122754 states have internal predecessors, (148468), 38200 states have call successors, (38200), 13222 states have call predecessors, (38200), 12930 states have return successors, (43678), 36422 states have call predecessors, (43678), 38200 states have call successors, (43678) [2021-12-18 10:30:36,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170908 states to 170908 states and 230346 transitions. [2021-12-18 10:30:36,880 INFO L78 Accepts]: Start accepts. Automaton has 170908 states and 230346 transitions. Word has length 232 [2021-12-18 10:30:36,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 10:30:36,881 INFO L470 AbstractCegarLoop]: Abstraction has 170908 states and 230346 transitions. [2021-12-18 10:30:36,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 10:30:36,881 INFO L276 IsEmpty]: Start isEmpty. Operand 170908 states and 230346 transitions. [2021-12-18 10:30:36,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-12-18 10:30:36,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 10:30:36,887 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 11, 11, 11, 11, 11, 11, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 10:30:36,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 10:30:36,887 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-18 10:30:36,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 10:30:36,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1821742700, now seen corresponding path program 1 times [2021-12-18 10:30:36,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 10:30:36,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675773543] [2021-12-18 10:30:36,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 10:30:36,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 10:30:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 10:30:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 10:30:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 10:30:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 10:30:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 10:30:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 10:30:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 10:30:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 10:30:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 10:30:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 10:30:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 10:30:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 10:30:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 10:30:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 10:30:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 10:30:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 10:30:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 10:30:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-18 10:30:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 10:30:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 10:30:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-18 10:30:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-18 10:30:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-18 10:30:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-12-18 10:30:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 10:30:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2021-12-18 10:30:37,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 10:30:37,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675773543] [2021-12-18 10:30:37,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675773543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 10:30:37,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 10:30:37,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 10:30:37,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991049627] [2021-12-18 10:30:37,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 10:30:37,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 10:30:37,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 10:30:37,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 10:30:37,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 10:30:37,388 INFO L87 Difference]: Start difference. First operand 170908 states and 230346 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-18 10:30:39,895 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 10:30:42,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []