./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.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 fbb6aba39a63540626ae26255eab93a5f2c0864f87ba11cb320579066e7aefd2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 04:49:05,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:49:05,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:49:05,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:49:05,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:49:05,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:49:05,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:49:05,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:49:05,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:49:05,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:49:05,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:49:05,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:49:05,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:49:05,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:49:05,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:49:05,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:49:05,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:49:05,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:49:05,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:49:05,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:49:05,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:49:05,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:49:05,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:49:05,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:49:05,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:49:05,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:49:05,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:49:05,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:49:05,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:49:05,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:49:05,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:49:05,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:49:05,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:49:05,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:49:05,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:49:05,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:49:05,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:49:05,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:49:05,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:49:05,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:49:05,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:49:05,747 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:49:05,768 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:49:05,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:49:05,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:49:05,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:49:05,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:49:05,770 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:49:05,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:49:05,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:49:05,771 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:49:05,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:49:05,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:49:05,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:49:05,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:49:05,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:49:05,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:49:05,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:49:05,772 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:49:05,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:49:05,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:49:05,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:49:05,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:49:05,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:49:05,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:49:05,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:49:05,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:49:05,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:49:05,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:49:05,774 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:49:05,774 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:49:05,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:49:05,775 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbb6aba39a63540626ae26255eab93a5f2c0864f87ba11cb320579066e7aefd2 [2021-12-28 04:49:06,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:49:06,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:49:06,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:49:06,140 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:49:06,141 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:49:06,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2021-12-28 04:49:06,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e0d5bc38/263b9ac950b4415f9d17c90baf1f91a7/FLAG745098066 [2021-12-28 04:49:06,996 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:49:06,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2021-12-28 04:49:07,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e0d5bc38/263b9ac950b4415f9d17c90baf1f91a7/FLAG745098066 [2021-12-28 04:49:07,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e0d5bc38/263b9ac950b4415f9d17c90baf1f91a7 [2021-12-28 04:49:07,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:49:07,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:49:07,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:49:07,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:49:07,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:49:07,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:49:07" (1/1) ... [2021-12-28 04:49:07,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a377174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:49:07, skipping insertion in model container [2021-12-28 04:49:07,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:49:07" (1/1) ... [2021-12-28 04:49:07,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:49:07,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:49:09,925 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305216,305229] [2021-12-28 04:49:09,932 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305385,305398] [2021-12-28 04:49:09,933 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305552,305565] [2021-12-28 04:49:09,933 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305720,305733] [2021-12-28 04:49:09,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:49:09,977 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:49:10,335 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305216,305229] [2021-12-28 04:49:10,337 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305385,305398] [2021-12-28 04:49:10,337 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305552,305565] [2021-12-28 04:49:10,337 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305720,305733] [2021-12-28 04:49:10,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:49:10,566 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:49:10,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:49:10 WrapperNode [2021-12-28 04:49:10,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:49:10,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:49:10,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:49:10,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:49:10,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:49:10" (1/1) ... [2021-12-28 04:49:10,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:49:10" (1/1) ... [2021-12-28 04:49:10,829 INFO L137 Inliner]: procedures = 411, calls = 1991, calls flagged for inlining = 210, calls inlined = 187, statements flattened = 4406 [2021-12-28 04:49:10,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:49:10,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:49:10,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:49:10,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:49:10,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:49:10" (1/1) ... [2021-12-28 04:49:10,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:49:10" (1/1) ... [2021-12-28 04:49:10,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:49:10" (1/1) ... [2021-12-28 04:49:10,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:49:10" (1/1) ... [2021-12-28 04:49:10,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:49:10" (1/1) ... [2021-12-28 04:49:10,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:49:10" (1/1) ... [2021-12-28 04:49:11,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:49:10" (1/1) ... [2021-12-28 04:49:11,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:49:11,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:49:11,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:49:11,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:49:11,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:49:10" (1/1) ... [2021-12-28 04:49:11,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:49:11,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:49:11,073 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) [2021-12-28 04:49:11,110 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 [2021-12-28 04:49:11,155 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_probe [2021-12-28 04:49:11,157 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_probe [2021-12-28 04:49:11,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-28 04:49:11,157 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-28 04:49:11,157 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:49:11,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:49:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-28 04:49:11,158 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-28 04:49:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-12-28 04:49:11,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-12-28 04:49:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-28 04:49:11,159 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-28 04:49:11,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2021-12-28 04:49:11,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2021-12-28 04:49:11,159 INFO L130 BoogieDeclarations]: Found specification of procedure __dnet_set_hwaddr [2021-12-28 04:49:11,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __dnet_set_hwaddr [2021-12-28 04:49:11,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-28 04:49:11,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-12-28 04:49:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-28 04:49:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-28 04:49:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-12-28 04:49:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-12-28 04:49:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-28 04:49:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-28 04:49:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-28 04:49:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-28 04:49:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:49:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-12-28 04:49:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-12-28 04:49:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-28 04:49:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-28 04:49:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 04:49:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-12-28 04:49:11,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-12-28 04:49:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 04:49:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-12-28 04:49:11,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-12-28 04:49:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:49:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-12-28 04:49:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-12-28 04:49:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_reset_hw [2021-12-28 04:49:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_reset_hw [2021-12-28 04:49:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-12-28 04:49:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-12-28 04:49:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:49:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-12-28 04:49:11,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-12-28 04:49:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-12-28 04:49:11,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-12-28 04:49:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-12-28 04:49:11,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-12-28 04:49:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:49:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-12-28 04:49:11,167 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-12-28 04:49:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-28 04:49:11,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-28 04:49:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-28 04:49:11,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-28 04:49:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:49:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 04:49:11,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 04:49:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-28 04:49:11,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-28 04:49:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-12-28 04:49:11,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-12-28 04:49:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-28 04:49:11,171 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-28 04:49:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-12-28 04:49:11,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-12-28 04:49:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-12-28 04:49:11,171 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-12-28 04:49:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-12-28 04:49:11,172 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-12-28 04:49:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-28 04:49:11,172 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-28 04:49:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:49:11,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:49:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-28 04:49:11,173 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-28 04:49:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2021-12-28 04:49:11,173 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2021-12-28 04:49:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 04:49:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 04:49:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:49:11,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:49:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2021-12-28 04:49:11,174 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2021-12-28 04:49:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-12-28 04:49:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-12-28 04:49:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_dnet [2021-12-28 04:49:11,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_dnet [2021-12-28 04:49:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-28 04:49:11,176 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-28 04:49:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_readw_mac [2021-12-28 04:49:11,177 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_readw_mac [2021-12-28 04:49:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 04:49:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:49:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:49:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-28 04:49:11,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-28 04:49:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-28 04:49:11,178 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-28 04:49:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-12-28 04:49:11,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-12-28 04:49:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-12-28 04:49:11,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-12-28 04:49:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_close [2021-12-28 04:49:11,179 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_close [2021-12-28 04:49:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2021-12-28 04:49:11,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2021-12-28 04:49:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_handle_link_change [2021-12-28 04:49:11,179 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_handle_link_change [2021-12-28 04:49:11,180 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-12-28 04:49:11,181 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-12-28 04:49:11,182 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-28 04:49:11,183 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-28 04:49:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_writew_mac [2021-12-28 04:49:11,184 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_writew_mac [2021-12-28 04:49:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-28 04:49:11,184 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-28 04:49:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 04:49:11,185 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 04:49:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:49:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 04:49:11,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 04:49:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_remove [2021-12-28 04:49:11,189 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_remove [2021-12-28 04:49:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-28 04:49:11,190 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-28 04:49:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_open [2021-12-28 04:49:11,191 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_open [2021-12-28 04:49:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure phy_connect [2021-12-28 04:49:11,191 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_connect [2021-12-28 04:49:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-12-28 04:49:11,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-12-28 04:49:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-12-28 04:49:11,191 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-12-28 04:49:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:49:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-28 04:49:11,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-28 04:49:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-12-28 04:49:11,192 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-12-28 04:49:11,992 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:49:11,995 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:49:12,648 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:49:17,092 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-12-28 04:49:17,130 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:49:17,151 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:49:17,152 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 04:49:17,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:49:17 BoogieIcfgContainer [2021-12-28 04:49:17,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:49:17,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:49:17,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:49:17,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:49:17,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:49:07" (1/3) ... [2021-12-28 04:49:17,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0bf8f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:49:17, skipping insertion in model container [2021-12-28 04:49:17,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:49:10" (2/3) ... [2021-12-28 04:49:17,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0bf8f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:49:17, skipping insertion in model container [2021-12-28 04:49:17,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:49:17" (3/3) ... [2021-12-28 04:49:17,163 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2021-12-28 04:49:17,168 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:49:17,168 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-12-28 04:49:17,225 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:49:17,231 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 [2021-12-28 04:49:17,232 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-28 04:49:17,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 1366 states, 977 states have (on average 1.2620266120777892) internal successors, (1233), 990 states have internal predecessors, (1233), 324 states have call successors, (324), 63 states have call predecessors, (324), 62 states have return successors, (317), 315 states have call predecessors, (317), 317 states have call successors, (317) [2021-12-28 04:49:17,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-28 04:49:17,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:49:17,305 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:49:17,306 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 04:49:17,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:49:17,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1829789727, now seen corresponding path program 1 times [2021-12-28 04:49:17,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:49:17,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953200471] [2021-12-28 04:49:17,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:49:17,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:49:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:17,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 04:49:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:17,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:17,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 04:49:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:17,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:17,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 04:49:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:17,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:18,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 04:49:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:18,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:18,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 04:49:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:18,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:18,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:49:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:18,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:18,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 04:49:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:18,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:18,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 04:49:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:18,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:18,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 04:49:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:18,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:18,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 04:49:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:18,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:18,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 04:49:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:18,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 04:49:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-12-28 04:49:18,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:49:18,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953200471] [2021-12-28 04:49:18,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953200471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:49:18,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:49:18,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 04:49:18,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023624224] [2021-12-28 04:49:18,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:49:18,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 04:49:18,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:49:18,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 04:49:18,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 04:49:18,269 INFO L87 Difference]: Start difference. First operand has 1366 states, 977 states have (on average 1.2620266120777892) internal successors, (1233), 990 states have internal predecessors, (1233), 324 states have call successors, (324), 63 states have call predecessors, (324), 62 states have return successors, (317), 315 states have call predecessors, (317), 317 states have call successors, (317) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 04:49:21,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:49:23,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:49:23,606 INFO L93 Difference]: Finished difference Result 3992 states and 5626 transitions. [2021-12-28 04:49:23,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:49:23,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 134 [2021-12-28 04:49:23,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:49:23,640 INFO L225 Difference]: With dead ends: 3992 [2021-12-28 04:49:23,640 INFO L226 Difference]: Without dead ends: 2639 [2021-12-28 04:49:23,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:49:23,657 INFO L933 BasicCegarLoop]: 2018 mSDtfsCounter, 2134 mSDsluCounter, 2054 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 830 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2421 SdHoareTripleChecker+Valid, 4072 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:49:23,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2421 Valid, 4072 Invalid, 2146 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [830 Valid, 1315 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-12-28 04:49:23,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2021-12-28 04:49:23,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2611. [2021-12-28 04:49:23,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 1888 states have (on average 1.257415254237288) internal successors, (2374), 1912 states have internal predecessors, (2374), 599 states have call successors, (599), 122 states have call predecessors, (599), 121 states have return successors, (596), 592 states have call predecessors, (596), 596 states have call successors, (596) [2021-12-28 04:49:23,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3569 transitions. [2021-12-28 04:49:23,898 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3569 transitions. Word has length 134 [2021-12-28 04:49:23,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:49:23,901 INFO L470 AbstractCegarLoop]: Abstraction has 2611 states and 3569 transitions. [2021-12-28 04:49:23,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 04:49:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3569 transitions. [2021-12-28 04:49:23,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-28 04:49:23,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:49:23,911 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:49:23,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:49:23,912 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 04:49:23,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:49:23,912 INFO L85 PathProgramCache]: Analyzing trace with hash 493076079, now seen corresponding path program 1 times [2021-12-28 04:49:23,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:49:23,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456960038] [2021-12-28 04:49:23,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:49:23,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:49:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 04:49:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 04:49:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 04:49:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 04:49:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 04:49:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:49:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 04:49:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 04:49:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 04:49:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 04:49:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 04:49:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 04:49:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:24,254 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-12-28 04:49:24,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:49:24,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456960038] [2021-12-28 04:49:24,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456960038] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:49:24,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:49:24,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 04:49:24,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787953573] [2021-12-28 04:49:24,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:49:24,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 04:49:24,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:49:24,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 04:49:24,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 04:49:24,258 INFO L87 Difference]: Start difference. First operand 2611 states and 3569 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 04:49:26,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:49:30,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:49:31,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:49:31,388 INFO L93 Difference]: Finished difference Result 7633 states and 10625 transitions. [2021-12-28 04:49:31,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:49:31,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 138 [2021-12-28 04:49:31,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:49:31,426 INFO L225 Difference]: With dead ends: 7633 [2021-12-28 04:49:31,427 INFO L226 Difference]: Without dead ends: 5047 [2021-12-28 04:49:31,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:49:31,443 INFO L933 BasicCegarLoop]: 2157 mSDtfsCounter, 2038 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 842 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2276 SdHoareTripleChecker+Valid, 4337 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 842 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-12-28 04:49:31,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2276 Valid, 4337 Invalid, 2141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [842 Valid, 1297 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2021-12-28 04:49:31,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5047 states. [2021-12-28 04:49:31,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5047 to 4992. [2021-12-28 04:49:31,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4992 states, 3630 states have (on average 1.2575757575757576) internal successors, (4565), 3684 states have internal predecessors, (4565), 1114 states have call successors, (1114), 242 states have call predecessors, (1114), 245 states have return successors, (1303), 1095 states have call predecessors, (1303), 1111 states have call successors, (1303) [2021-12-28 04:49:31,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4992 states to 4992 states and 6982 transitions. [2021-12-28 04:49:31,724 INFO L78 Accepts]: Start accepts. Automaton has 4992 states and 6982 transitions. Word has length 138 [2021-12-28 04:49:31,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:49:31,726 INFO L470 AbstractCegarLoop]: Abstraction has 4992 states and 6982 transitions. [2021-12-28 04:49:31,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 04:49:31,727 INFO L276 IsEmpty]: Start isEmpty. Operand 4992 states and 6982 transitions. [2021-12-28 04:49:31,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-28 04:49:31,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:49:31,731 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:49:31,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:49:31,731 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 04:49:31,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:49:31,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1667436356, now seen corresponding path program 1 times [2021-12-28 04:49:31,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:49:31,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776040724] [2021-12-28 04:49:31,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:49:31,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:49:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:31,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 04:49:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:31,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 04:49:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:31,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:31,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 04:49:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:31,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 04:49:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:31,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:31,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 04:49:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:31,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:31,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:49:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:32,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:32,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 04:49:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:32,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:32,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 04:49:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:32,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:32,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 04:49:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:32,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:32,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 04:49:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:32,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:32,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 04:49:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:32,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-28 04:49:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:32,108 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-12-28 04:49:32,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:49:32,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776040724] [2021-12-28 04:49:32,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776040724] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:49:32,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:49:32,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 04:49:32,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522135485] [2021-12-28 04:49:32,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:49:32,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 04:49:32,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:49:32,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 04:49:32,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 04:49:32,114 INFO L87 Difference]: Start difference. First operand 4992 states and 6982 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, (17), 3 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 04:49:35,143 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:49:37,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:49:39,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:49:39,270 INFO L93 Difference]: Finished difference Result 14132 states and 19680 transitions. [2021-12-28 04:49:39,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:49:39,271 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, (17), 3 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 145 [2021-12-28 04:49:39,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:49:39,329 INFO L225 Difference]: With dead ends: 14132 [2021-12-28 04:49:39,330 INFO L226 Difference]: Without dead ends: 9165 [2021-12-28 04:49:39,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:49:39,356 INFO L933 BasicCegarLoop]: 2075 mSDtfsCounter, 1718 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 799 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 3993 SdHoareTripleChecker+Invalid, 2228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-12-28 04:49:39,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1977 Valid, 3993 Invalid, 2228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [799 Valid, 1427 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2021-12-28 04:49:39,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9165 states. [2021-12-28 04:49:39,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9165 to 9086. [2021-12-28 04:49:39,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9086 states, 6558 states have (on average 1.2447392497712717) internal successors, (8163), 6670 states have internal predecessors, (8163), 2052 states have call successors, (2052), 470 states have call predecessors, (2052), 473 states have return successors, (2249), 2005 states have call predecessors, (2249), 2049 states have call successors, (2249) [2021-12-28 04:49:39,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9086 states to 9086 states and 12464 transitions. [2021-12-28 04:49:39,738 INFO L78 Accepts]: Start accepts. Automaton has 9086 states and 12464 transitions. Word has length 145 [2021-12-28 04:49:39,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:49:39,739 INFO L470 AbstractCegarLoop]: Abstraction has 9086 states and 12464 transitions. [2021-12-28 04:49:39,740 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, (17), 3 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 04:49:39,740 INFO L276 IsEmpty]: Start isEmpty. Operand 9086 states and 12464 transitions. [2021-12-28 04:49:39,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-28 04:49:39,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:49:39,743 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:49:39,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 04:49:39,744 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 04:49:39,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:49:39,744 INFO L85 PathProgramCache]: Analyzing trace with hash -656611999, now seen corresponding path program 1 times [2021-12-28 04:49:39,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:49:39,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252806386] [2021-12-28 04:49:39,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:49:39,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:49:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:39,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 04:49:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:39,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:39,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 04:49:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:39,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:39,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 04:49:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:39,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:39,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 04:49:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:39,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:39,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 04:49:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:39,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:39,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:49:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:40,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:40,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 04:49:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:40,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:40,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 04:49:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:40,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:40,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 04:49:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:40,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:40,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 04:49:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:40,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:40,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 04:49:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:40,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-28 04:49:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-12-28 04:49:40,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:49:40,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252806386] [2021-12-28 04:49:40,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252806386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:49:40,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:49:40,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 04:49:40,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777911676] [2021-12-28 04:49:40,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:49:40,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 04:49:40,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:49:40,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 04:49:40,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 04:49:40,093 INFO L87 Difference]: Start difference. First operand 9086 states and 12464 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 04:49:43,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:49:44,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:49:44,941 INFO L93 Difference]: Finished difference Result 24640 states and 34066 transitions. [2021-12-28 04:49:44,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:49:44,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 153 [2021-12-28 04:49:44,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:49:45,062 INFO L225 Difference]: With dead ends: 24640 [2021-12-28 04:49:45,063 INFO L226 Difference]: Without dead ends: 15579 [2021-12-28 04:49:45,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:49:45,102 INFO L933 BasicCegarLoop]: 1944 mSDtfsCounter, 1757 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 832 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 3970 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 832 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-28 04:49:45,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1958 Valid, 3970 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [832 Valid, 1291 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-12-28 04:49:45,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15579 states. [2021-12-28 04:49:45,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15579 to 15452. [2021-12-28 04:49:45,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15452 states, 11066 states have (on average 1.2343213446593169) internal successors, (13659), 11278 states have internal predecessors, (13659), 3492 states have call successors, (3492), 896 states have call predecessors, (3492), 891 states have return successors, (4189), 3369 states have call predecessors, (4189), 3489 states have call successors, (4189) [2021-12-28 04:49:45,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15452 states to 15452 states and 21340 transitions. [2021-12-28 04:49:45,813 INFO L78 Accepts]: Start accepts. Automaton has 15452 states and 21340 transitions. Word has length 153 [2021-12-28 04:49:45,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:49:45,815 INFO L470 AbstractCegarLoop]: Abstraction has 15452 states and 21340 transitions. [2021-12-28 04:49:45,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 04:49:45,815 INFO L276 IsEmpty]: Start isEmpty. Operand 15452 states and 21340 transitions. [2021-12-28 04:49:45,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-28 04:49:45,818 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:49:45,818 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 10, 10, 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] [2021-12-28 04:49:45,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 04:49:45,819 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 04:49:45,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:49:45,819 INFO L85 PathProgramCache]: Analyzing trace with hash 2109483455, now seen corresponding path program 1 times [2021-12-28 04:49:45,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:49:45,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096370989] [2021-12-28 04:49:45,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:49:45,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:49:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:45,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 04:49:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:45,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:45,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 04:49:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:45,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:45,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 04:49:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 04:49:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 04:49:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:49:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 04:49:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 04:49:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 04:49:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 04:49:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 04:49:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 04:49:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-28 04:49:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-28 04:49:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:46,146 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2021-12-28 04:49:46,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:49:46,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096370989] [2021-12-28 04:49:46,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096370989] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:49:46,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:49:46,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 04:49:46,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193399860] [2021-12-28 04:49:46,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:49:46,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 04:49:46,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:49:46,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 04:49:46,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 04:49:46,149 INFO L87 Difference]: Start difference. First operand 15452 states and 21340 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, (19), 3 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-28 04:49:50,280 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 [] [2021-12-28 04:49:52,343 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 [] [2021-12-28 04:49:53,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:49:53,024 INFO L93 Difference]: Finished difference Result 29258 states and 40524 transitions. [2021-12-28 04:49:53,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:49:53,026 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, (19), 3 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 169 [2021-12-28 04:49:53,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:49:53,094 INFO L225 Difference]: With dead ends: 29258 [2021-12-28 04:49:53,095 INFO L226 Difference]: Without dead ends: 13831 [2021-12-28 04:49:53,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:49:53,154 INFO L933 BasicCegarLoop]: 2983 mSDtfsCounter, 1751 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 647 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2027 SdHoareTripleChecker+Valid, 5457 SdHoareTripleChecker+Invalid, 2033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-12-28 04:49:53,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2027 Valid, 5457 Invalid, 2033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 1384 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2021-12-28 04:49:53,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13831 states. [2021-12-28 04:49:53,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13831 to 13739. [2021-12-28 04:49:53,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13739 states, 9943 states have (on average 1.2314190888061953) internal successors, (12244), 10141 states have internal predecessors, (12244), 3002 states have call successors, (3002), 793 states have call predecessors, (3002), 791 states have return successors, (3671), 2886 states have call predecessors, (3671), 2999 states have call successors, (3671) [2021-12-28 04:49:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13739 states to 13739 states and 18917 transitions. [2021-12-28 04:49:53,690 INFO L78 Accepts]: Start accepts. Automaton has 13739 states and 18917 transitions. Word has length 169 [2021-12-28 04:49:53,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:49:53,691 INFO L470 AbstractCegarLoop]: Abstraction has 13739 states and 18917 transitions. [2021-12-28 04:49:53,691 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, (19), 3 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-28 04:49:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 13739 states and 18917 transitions. [2021-12-28 04:49:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-28 04:49:53,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:49:53,693 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 4, 4, 4, 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] [2021-12-28 04:49:53,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 04:49:53,694 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 04:49:53,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:49:53,695 INFO L85 PathProgramCache]: Analyzing trace with hash -844179788, now seen corresponding path program 1 times [2021-12-28 04:49:53,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:49:53,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458999691] [2021-12-28 04:49:53,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:49:53,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:49:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 04:49:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 04:49:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 04:49:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 04:49:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 04:49:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:49:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 04:49:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 04:49:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 04:49:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 04:49:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 04:49:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 04:49:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:53,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 04:49:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:54,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-28 04:49:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:54,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-28 04:49:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:54,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:49:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:54,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-28 04:49:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:54,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-28 04:49:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:54,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-28 04:49:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:49:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2021-12-28 04:49:54,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:49:54,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458999691] [2021-12-28 04:49:54,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458999691] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:49:54,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:49:54,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 04:49:54,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272620681] [2021-12-28 04:49:54,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:49:54,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 04:49:54,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:49:54,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 04:49:54,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 04:49:54,049 INFO L87 Difference]: Start difference. First operand 13739 states and 18917 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-28 04:49:58,860 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 [] [2021-12-28 04:49:59,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:49:59,432 INFO L93 Difference]: Finished difference Result 40460 states and 55934 transitions. [2021-12-28 04:49:59,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:49:59,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 186 [2021-12-28 04:49:59,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:49:59,567 INFO L225 Difference]: With dead ends: 40460 [2021-12-28 04:49:59,567 INFO L226 Difference]: Without dead ends: 26815 [2021-12-28 04:49:59,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:49:59,621 INFO L933 BasicCegarLoop]: 2073 mSDtfsCounter, 2103 mSDsluCounter, 2088 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 844 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2385 SdHoareTripleChecker+Valid, 4161 SdHoareTripleChecker+Invalid, 2155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 844 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-28 04:49:59,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2385 Valid, 4161 Invalid, 2155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [844 Valid, 1310 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-12-28 04:49:59,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26815 states. [2021-12-28 04:50:00,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26815 to 26673. [2021-12-28 04:50:00,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26673 states, 19350 states have (on average 1.23343669250646) internal successors, (23867), 19704 states have internal predecessors, (23867), 5787 states have call successors, (5787), 1536 states have call predecessors, (5787), 1533 states have return successors, (7128), 5596 states have call predecessors, (7128), 5784 states have call successors, (7128) [2021-12-28 04:50:00,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26673 states to 26673 states and 36782 transitions. [2021-12-28 04:50:00,780 INFO L78 Accepts]: Start accepts. Automaton has 26673 states and 36782 transitions. Word has length 186 [2021-12-28 04:50:00,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:50:00,782 INFO L470 AbstractCegarLoop]: Abstraction has 26673 states and 36782 transitions. [2021-12-28 04:50:00,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-28 04:50:00,782 INFO L276 IsEmpty]: Start isEmpty. Operand 26673 states and 36782 transitions. [2021-12-28 04:50:00,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-28 04:50:00,785 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:50:00,785 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 4, 4, 4, 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] [2021-12-28 04:50:00,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 04:50:00,786 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 04:50:00,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:50:00,786 INFO L85 PathProgramCache]: Analyzing trace with hash -421477962, now seen corresponding path program 1 times [2021-12-28 04:50:00,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:50:00,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172188882] [2021-12-28 04:50:00,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:50:00,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:50:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 04:50:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:50:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 04:50:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:50:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 04:50:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:50:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 04:50:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:50:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 04:50:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:50:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:50:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:50:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 04:50:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:50:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 04:50:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:50:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 04:50:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:50:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 04:50:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:50:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 04:50:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 04:50:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 04:50:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-28 04:50:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-28 04:50:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:50:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-28 04:50:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-28 04:50:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-28 04:50:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:50:01,311 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2021-12-28 04:50:01,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:50:01,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172188882] [2021-12-28 04:50:01,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172188882] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:50:01,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:50:01,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:50:01,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062630013] [2021-12-28 04:50:01,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:50:01,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:50:01,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:50:01,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:50:01,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:50:01,314 INFO L87 Difference]: Start difference. First operand 26673 states and 36782 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19)