./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-hp-hp100.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-hp-hp100.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 6b2cae6d498f7aa4576ffcfd28b3f955c7840001d7c2abb7c90b6970c97881d1 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 04:51:12,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 04:51:12,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 04:51:12,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 04:51:12,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 04:51:12,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 04:51:12,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 04:51:12,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 04:51:12,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 04:51:12,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 04:51:12,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 04:51:12,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 04:51:12,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 04:51:12,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 04:51:12,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 04:51:12,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 04:51:12,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 04:51:12,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 04:51:12,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 04:51:12,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 04:51:12,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 04:51:12,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 04:51:12,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 04:51:12,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 04:51:12,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 04:51:12,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 04:51:12,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 04:51:12,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 04:51:12,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 04:51:12,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 04:51:12,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 04:51:12,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 04:51:12,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 04:51:12,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 04:51:12,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 04:51:12,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 04:51:12,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 04:51:12,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 04:51:12,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 04:51:12,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 04:51:12,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 04:51:12,556 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 04:51:12,587 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 04:51:12,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 04:51:12,588 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 04:51:12,588 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 04:51:12,589 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 04:51:12,589 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 04:51:12,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 04:51:12,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 04:51:12,590 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 04:51:12,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 04:51:12,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 04:51:12,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 04:51:12,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 04:51:12,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 04:51:12,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 04:51:12,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 04:51:12,593 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 04:51:12,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 04:51:12,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 04:51:12,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 04:51:12,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 04:51:12,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:51:12,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 04:51:12,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 04:51:12,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 04:51:12,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 04:51:12,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 04:51:12,595 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 04:51:12,595 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 04:51:12,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 04:51:12,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 04:51:12,597 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b2cae6d498f7aa4576ffcfd28b3f955c7840001d7c2abb7c90b6970c97881d1 [2021-12-16 04:51:12,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 04:51:12,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 04:51:12,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 04:51:12,858 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 04:51:12,859 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 04:51:12,860 INFO L432 ainManager$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-hp-hp100.cil.i [2021-12-16 04:51:12,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49ea46c89/3af1a21bb96144648ebebf14ed3b45e3/FLAG544e87ccc [2021-12-16 04:51:13,694 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 04:51:13,696 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-hp-hp100.cil.i [2021-12-16 04:51:13,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49ea46c89/3af1a21bb96144648ebebf14ed3b45e3/FLAG544e87ccc [2021-12-16 04:51:13,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49ea46c89/3af1a21bb96144648ebebf14ed3b45e3 [2021-12-16 04:51:13,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 04:51:13,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 04:51:13,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 04:51:13,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 04:51:13,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 04:51:13,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:51:13" (1/1) ... [2021-12-16 04:51:13,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f2d04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:13, skipping insertion in model container [2021-12-16 04:51:13,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:51:13" (1/1) ... [2021-12-16 04:51:13,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 04:51:14,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 04:51:16,616 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-hp-hp100.cil.i[314801,314814] [2021-12-16 04:51:16,619 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-hp-hp100.cil.i[314970,314983] [2021-12-16 04:51:16,619 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-hp-hp100.cil.i[315137,315150] [2021-12-16 04:51:16,620 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-hp-hp100.cil.i[315305,315318] [2021-12-16 04:51:16,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:51:16,676 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 04:51:16,972 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-hp-hp100.cil.i[314801,314814] [2021-12-16 04:51:16,973 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-hp-hp100.cil.i[314970,314983] [2021-12-16 04:51:16,974 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-hp-hp100.cil.i[315137,315150] [2021-12-16 04:51:16,974 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-hp-hp100.cil.i[315305,315318] [2021-12-16 04:51:16,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:51:17,135 INFO L208 MainTranslator]: Completed translation [2021-12-16 04:51:17,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17 WrapperNode [2021-12-16 04:51:17,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 04:51:17,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 04:51:17,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 04:51:17,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 04:51:17,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2021-12-16 04:51:17,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2021-12-16 04:51:17,390 INFO L137 Inliner]: procedures = 391, calls = 1784, calls flagged for inlining = 177, calls inlined = 156, statements flattened = 4172 [2021-12-16 04:51:17,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 04:51:17,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 04:51:17,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 04:51:17,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 04:51:17,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2021-12-16 04:51:17,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2021-12-16 04:51:17,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2021-12-16 04:51:17,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2021-12-16 04:51:17,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2021-12-16 04:51:17,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2021-12-16 04:51:17,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2021-12-16 04:51:17,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 04:51:17,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 04:51:17,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 04:51:17,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 04:51:17,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2021-12-16 04:51:17,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:51:17,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 04:51:17,665 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) [2021-12-16 04:51:17,686 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 [2021-12-16 04:51:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-16 04:51:17,701 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-16 04:51:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-12-16 04:51:17,702 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-12-16 04:51:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 04:51:17,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 04:51:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-12-16 04:51:17,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-12-16 04:51:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-16 04:51:17,702 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-16 04:51:17,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_66 [2021-12-16 04:51:17,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_66 [2021-12-16 04:51:17,703 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2021-12-16 04:51:17,703 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2021-12-16 04:51:17,703 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_open [2021-12-16 04:51:17,703 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_open [2021-12-16 04:51:17,703 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_load_eeprom [2021-12-16 04:51:17,704 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_load_eeprom [2021-12-16 04:51:17,704 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-16 04:51:17,704 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_sense_lan [2021-12-16 04:51:17,704 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_sense_lan [2021-12-16 04:51:17,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-16 04:51:17,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-12-16 04:51:17,704 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-12-16 04:51:17,705 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-12-16 04:51:17,705 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-16 04:51:17,705 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-16 04:51:17,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-16 04:51:17,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-16 04:51:17,705 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-16 04:51:17,705 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-16 04:51:17,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 04:51:17,706 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-12-16 04:51:17,706 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-12-16 04:51:17,706 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-12-16 04:51:17,706 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-12-16 04:51:17,706 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-16 04:51:17,706 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-16 04:51:17,707 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_cascade_reset [2021-12-16 04:51:17,707 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_cascade_reset [2021-12-16 04:51:17,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 04:51:17,707 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-16 04:51:17,708 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-16 04:51:17,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 04:51:17,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-12-16 04:51:17,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-12-16 04:51:17,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 04:51:17,708 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-16 04:51:17,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-16 04:51:17,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-16 04:51:17,709 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-16 04:51:17,710 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rx_bm [2021-12-16 04:51:17,710 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rx_bm [2021-12-16 04:51:17,711 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_BM_shutdown [2021-12-16 04:51:17,711 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_BM_shutdown [2021-12-16 04:51:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-12-16 04:51:17,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-12-16 04:51:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-12-16 04:51:17,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-12-16 04:51:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure wait [2021-12-16 04:51:17,712 INFO L138 BoogieDeclarations]: Found implementation of procedure wait [2021-12-16 04:51:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-16 04:51:17,713 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-16 04:51:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_hwinit [2021-12-16 04:51:17,713 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_hwinit [2021-12-16 04:51:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-16 04:51:17,714 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-16 04:51:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_whatever [2021-12-16 04:51:17,714 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_whatever [2021-12-16 04:51:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_close [2021-12-16 04:51:17,714 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_close [2021-12-16 04:51:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-12-16 04:51:17,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-12-16 04:51:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 04:51:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_stop_interface [2021-12-16 04:51:17,715 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_stop_interface [2021-12-16 04:51:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_check_lan [2021-12-16 04:51:17,715 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_check_lan [2021-12-16 04:51:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-12-16 04:51:17,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-12-16 04:51:17,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 04:51:17,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-16 04:51:17,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-16 04:51:17,716 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-16 04:51:17,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-16 04:51:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 04:51:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-16 04:51:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 04:51:17,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 04:51:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-16 04:51:17,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-16 04:51:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-12-16 04:51:17,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-12-16 04:51:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rxfill [2021-12-16 04:51:17,718 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rxfill [2021-12-16 04:51:17,719 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-16 04:51:17,719 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-16 04:51:17,719 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-16 04:51:17,719 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-16 04:51:17,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-12-16 04:51:17,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-12-16 04:51:17,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 04:51:17,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 04:51:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_update_stats [2021-12-16 04:51:17,720 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_update_stats [2021-12-16 04:51:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 04:51:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 04:51:17,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-16 04:51:17,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-16 04:51:17,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-12-16 04:51:17,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-12-16 04:51:17,722 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-16 04:51:17,722 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-16 04:51:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-16 04:51:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-16 04:51:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-16 04:51:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-16 04:51:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 04:51:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 04:51:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 04:51:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-12-16 04:51:17,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-12-16 04:51:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-12-16 04:51:17,731 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-12-16 04:51:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-16 04:51:17,732 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-16 04:51:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-16 04:51:17,732 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-16 04:51:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-12-16 04:51:17,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-12-16 04:51:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-12-16 04:51:17,732 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-12-16 04:51:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_pci_remove [2021-12-16 04:51:17,733 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_pci_remove [2021-12-16 04:51:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_build_rx_pdl [2021-12-16 04:51:17,733 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_build_rx_pdl [2021-12-16 04:51:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-16 04:51:17,733 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-16 04:51:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-16 04:51:17,733 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-16 04:51:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-12-16 04:51:17,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-12-16 04:51:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_hp100_private [2021-12-16 04:51:17,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_hp100_private [2021-12-16 04:51:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 04:51:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-12-16 04:51:17,734 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-12-16 04:51:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 04:51:17,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 04:51:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_hp100_private [2021-12-16 04:51:17,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_hp100_private [2021-12-16 04:51:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_80 [2021-12-16 04:51:17,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_80 [2021-12-16 04:51:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2021-12-16 04:51:17,735 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2021-12-16 04:51:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-16 04:51:17,735 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-16 04:51:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-12-16 04:51:17,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-12-16 04:51:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_set_multicast_list [2021-12-16 04:51:17,736 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_set_multicast_list [2021-12-16 04:51:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_start_interface [2021-12-16 04:51:17,736 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_start_interface [2021-12-16 04:51:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-16 04:51:17,736 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-16 04:51:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_clean_txring [2021-12-16 04:51:17,737 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_clean_txring [2021-12-16 04:51:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-12-16 04:51:17,737 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-12-16 04:51:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 04:51:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2021-12-16 04:51:17,737 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2021-12-16 04:51:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-16 04:51:17,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-16 04:51:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_login_to_vg_hub [2021-12-16 04:51:17,738 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_login_to_vg_hub [2021-12-16 04:51:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-12-16 04:51:17,738 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-12-16 04:51:18,433 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 04:51:18,437 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 04:51:18,672 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-16 04:51:20,426 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-12-16 04:51:20,427 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 04:51:20,535 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L8563: SUMMARY for call #t~ret679#1 := schedule_timeout_interruptible(1); srcloc: null [2021-12-16 04:51:20,536 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L8563-1: assume -9223372036854775808 <= #t~ret679#1 && #t~ret679#1 <= 9223372036854775807;havoc #t~ret679#1; [2021-12-16 04:51:20,536 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume 0 == ~bitwiseAnd(~tmp___4~7#1, 2096896) % 18446744073709551616; [2021-12-16 04:51:20,536 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !(0 == ~bitwiseAnd(~tmp___4~7#1, 2096896) % 18446744073709551616); [2021-12-16 04:51:20,537 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L8567: assume (if (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 else (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 - 18446744073709551616) < 0; [2021-12-16 04:51:20,537 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L8567: assume !((if (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 else (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 - 18446744073709551616) < 0); [2021-12-16 04:51:20,622 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 04:51:20,636 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 04:51:20,637 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 04:51:20,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:51:20 BoogieIcfgContainer [2021-12-16 04:51:20,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 04:51:20,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 04:51:20,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 04:51:20,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 04:51:20,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:51:13" (1/3) ... [2021-12-16 04:51:20,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d1f4157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:51:20, skipping insertion in model container [2021-12-16 04:51:20,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (2/3) ... [2021-12-16 04:51:20,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d1f4157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:51:20, skipping insertion in model container [2021-12-16 04:51:20,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:51:20" (3/3) ... [2021-12-16 04:51:20,645 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-hp-hp100.cil.i [2021-12-16 04:51:20,649 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 04:51:20,650 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-12-16 04:51:20,692 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 04:51:20,698 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 [2021-12-16 04:51:20,698 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-16 04:51:20,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 1742 states, 1093 states have (on average 1.2909423604757548) internal successors, (1411), 1143 states have internal predecessors, (1411), 568 states have call successors, (568), 80 states have call predecessors, (568), 79 states have return successors, (563), 547 states have call predecessors, (563), 563 states have call successors, (563) [2021-12-16 04:51:20,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-16 04:51:20,747 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:51:20,748 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:51:20,748 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)] === [2021-12-16 04:51:20,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:51:20,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1862336508, now seen corresponding path program 1 times [2021-12-16 04:51:20,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:51:20,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313919042] [2021-12-16 04:51:20,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:51:20,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:51:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:21,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 04:51:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:21,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:21,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:51:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:21,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:21,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 04:51:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:21,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:21,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 04:51:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:21,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:21,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 04:51:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:21,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 04:51:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-16 04:51:21,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:51:21,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313919042] [2021-12-16 04:51:21,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313919042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:51:21,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:51:21,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:51:21,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964686591] [2021-12-16 04:51:21,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:51:21,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:51:21,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:51:21,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:51:21,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:51:21,365 INFO L87 Difference]: Start difference. First operand has 1742 states, 1093 states have (on average 1.2909423604757548) internal successors, (1411), 1143 states have internal predecessors, (1411), 568 states have call successors, (568), 80 states have call predecessors, (568), 79 states have return successors, (563), 547 states have call predecessors, (563), 563 states have call successors, (563) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 04:51:26,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:51:26,132 INFO L93 Difference]: Finished difference Result 5271 states and 7907 transitions. [2021-12-16 04:51:26,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:51:26,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2021-12-16 04:51:26,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:51:26,183 INFO L225 Difference]: With dead ends: 5271 [2021-12-16 04:51:26,184 INFO L226 Difference]: Without dead ends: 3532 [2021-12-16 04:51:26,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:51:26,206 INFO L933 BasicCegarLoop]: 2449 mSDtfsCounter, 3111 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 2123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3653 SdHoareTripleChecker+Valid, 4749 SdHoareTripleChecker+Invalid, 4237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2123 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-16 04:51:26,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3653 Valid, 4749 Invalid, 4237 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2123 Valid, 2114 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-16 04:51:26,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3532 states. [2021-12-16 04:51:26,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3532 to 3370. [2021-12-16 04:51:26,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3370 states, 2117 states have (on average 1.2824752007557865) internal successors, (2715), 2213 states have internal predecessors, (2715), 1095 states have call successors, (1095), 156 states have call predecessors, (1095), 155 states have return successors, (1092), 1060 states have call predecessors, (1092), 1092 states have call successors, (1092) [2021-12-16 04:51:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3370 states to 3370 states and 4902 transitions. [2021-12-16 04:51:26,533 INFO L78 Accepts]: Start accepts. Automaton has 3370 states and 4902 transitions. Word has length 68 [2021-12-16 04:51:26,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:51:26,534 INFO L470 AbstractCegarLoop]: Abstraction has 3370 states and 4902 transitions. [2021-12-16 04:51:26,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 04:51:26,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3370 states and 4902 transitions. [2021-12-16 04:51:26,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-16 04:51:26,539 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:51:26,539 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:51:26,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 04:51:26,540 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)] === [2021-12-16 04:51:26,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:51:26,540 INFO L85 PathProgramCache]: Analyzing trace with hash 323210058, now seen corresponding path program 1 times [2021-12-16 04:51:26,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:51:26,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994375662] [2021-12-16 04:51:26,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:51:26,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:51:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:26,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 04:51:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:26,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:26,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:51:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:26,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:26,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 04:51:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:26,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:26,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 04:51:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:26,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:26,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 04:51:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:26,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 04:51:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-16 04:51:26,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:51:26,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994375662] [2021-12-16 04:51:26,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994375662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:51:26,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:51:26,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:51:26,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359088850] [2021-12-16 04:51:26,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:51:26,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:51:26,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:51:26,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:51:26,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:51:26,721 INFO L87 Difference]: Start difference. First operand 3370 states and 4902 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 04:51:31,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:51:31,541 INFO L93 Difference]: Finished difference Result 9908 states and 14506 transitions. [2021-12-16 04:51:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:51:31,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2021-12-16 04:51:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:51:31,607 INFO L225 Difference]: With dead ends: 9908 [2021-12-16 04:51:31,608 INFO L226 Difference]: Without dead ends: 6551 [2021-12-16 04:51:31,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:51:31,632 INFO L933 BasicCegarLoop]: 2716 mSDtfsCounter, 2649 mSDsluCounter, 2390 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 1959 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3146 SdHoareTripleChecker+Valid, 5106 SdHoareTripleChecker+Invalid, 3999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1959 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-16 04:51:31,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3146 Valid, 5106 Invalid, 3999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1959 Valid, 2040 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-16 04:51:31,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6551 states. [2021-12-16 04:51:32,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6551 to 6268. [2021-12-16 04:51:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6268 states, 3912 states have (on average 1.2845092024539877) internal successors, (5025), 4098 states have internal predecessors, (5025), 2060 states have call successors, (2060), 294 states have call predecessors, (2060), 293 states have return successors, (2079), 1983 states have call predecessors, (2079), 2057 states have call successors, (2079) [2021-12-16 04:51:32,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6268 states to 6268 states and 9164 transitions. [2021-12-16 04:51:32,083 INFO L78 Accepts]: Start accepts. Automaton has 6268 states and 9164 transitions. Word has length 73 [2021-12-16 04:51:32,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:51:32,086 INFO L470 AbstractCegarLoop]: Abstraction has 6268 states and 9164 transitions. [2021-12-16 04:51:32,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 04:51:32,086 INFO L276 IsEmpty]: Start isEmpty. Operand 6268 states and 9164 transitions. [2021-12-16 04:51:32,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-16 04:51:32,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:51:32,093 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:51:32,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 04:51:32,094 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)] === [2021-12-16 04:51:32,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:51:32,095 INFO L85 PathProgramCache]: Analyzing trace with hash -697907898, now seen corresponding path program 1 times [2021-12-16 04:51:32,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:51:32,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127476458] [2021-12-16 04:51:32,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:51:32,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:51:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:32,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 04:51:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:32,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:32,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:51:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:32,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:32,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 04:51:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:32,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:32,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 04:51:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:32,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:32,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 04:51:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:32,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 04:51:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:32,325 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-16 04:51:32,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:51:32,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127476458] [2021-12-16 04:51:32,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127476458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:51:32,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:51:32,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:51:32,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150292790] [2021-12-16 04:51:32,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:51:32,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:51:32,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:51:32,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:51:32,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:51:32,328 INFO L87 Difference]: Start difference. First operand 6268 states and 9164 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 04:51:36,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:51:36,972 INFO L93 Difference]: Finished difference Result 18620 states and 27306 transitions. [2021-12-16 04:51:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:51:36,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 76 [2021-12-16 04:51:36,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:51:37,079 INFO L225 Difference]: With dead ends: 18620 [2021-12-16 04:51:37,079 INFO L226 Difference]: Without dead ends: 12365 [2021-12-16 04:51:37,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:51:37,126 INFO L933 BasicCegarLoop]: 2401 mSDtfsCounter, 2918 mSDsluCounter, 2279 mSDsCounter, 0 mSdLazyCounter, 2087 mSolverCounterSat, 2117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3425 SdHoareTripleChecker+Valid, 4680 SdHoareTripleChecker+Invalid, 4204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2117 IncrementalHoareTripleChecker+Valid, 2087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-16 04:51:37,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3425 Valid, 4680 Invalid, 4204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2117 Valid, 2087 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-16 04:51:37,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12365 states. [2021-12-16 04:51:37,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12365 to 11844. [2021-12-16 04:51:37,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11844 states, 7366 states have (on average 1.281971219114852) internal successors, (9443), 7722 states have internal predecessors, (9443), 3906 states have call successors, (3906), 572 states have call predecessors, (3906), 569 states have return successors, (3949), 3753 states have call predecessors, (3949), 3903 states have call successors, (3949) [2021-12-16 04:51:37,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11844 states to 11844 states and 17298 transitions. [2021-12-16 04:51:37,905 INFO L78 Accepts]: Start accepts. Automaton has 11844 states and 17298 transitions. Word has length 76 [2021-12-16 04:51:37,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:51:37,906 INFO L470 AbstractCegarLoop]: Abstraction has 11844 states and 17298 transitions. [2021-12-16 04:51:37,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 04:51:37,907 INFO L276 IsEmpty]: Start isEmpty. Operand 11844 states and 17298 transitions. [2021-12-16 04:51:37,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-16 04:51:37,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:51:37,910 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:51:37,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 04:51:37,910 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)] === [2021-12-16 04:51:37,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:51:37,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1005586591, now seen corresponding path program 1 times [2021-12-16 04:51:37,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:51:37,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7997692] [2021-12-16 04:51:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:51:37,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:51:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:38,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 04:51:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:38,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:38,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:51:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:38,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:38,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 04:51:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:38,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:38,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 04:51:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:38,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:38,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 04:51:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:38,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 04:51:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-16 04:51:38,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:51:38,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7997692] [2021-12-16 04:51:38,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7997692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:51:38,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:51:38,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 04:51:38,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605914343] [2021-12-16 04:51:38,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:51:38,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 04:51:38,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:51:38,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 04:51:38,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-16 04:51:38,176 INFO L87 Difference]: Start difference. First operand 11844 states and 17298 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 04:51:45,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:51:45,283 INFO L93 Difference]: Finished difference Result 24202 states and 35207 transitions. [2021-12-16 04:51:45,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 04:51:45,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 79 [2021-12-16 04:51:45,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:51:45,364 INFO L225 Difference]: With dead ends: 24202 [2021-12-16 04:51:45,364 INFO L226 Difference]: Without dead ends: 12371 [2021-12-16 04:51:45,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-12-16 04:51:45,427 INFO L933 BasicCegarLoop]: 3297 mSDtfsCounter, 6206 mSDsluCounter, 3181 mSDsCounter, 0 mSdLazyCounter, 4942 mSolverCounterSat, 4768 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6872 SdHoareTripleChecker+Valid, 6478 SdHoareTripleChecker+Invalid, 9710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4768 IncrementalHoareTripleChecker+Valid, 4942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-12-16 04:51:45,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6872 Valid, 6478 Invalid, 9710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4768 Valid, 4942 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-12-16 04:51:45,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12371 states. [2021-12-16 04:51:45,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12371 to 11707. [2021-12-16 04:51:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11707 states, 7347 states have (on average 1.2709949639308562) internal successors, (9338), 7701 states have internal predecessors, (9338), 3722 states have call successors, (3722), 642 states have call predecessors, (3722), 635 states have return successors, (3742), 3572 states have call predecessors, (3742), 3719 states have call successors, (3742) [2021-12-16 04:51:46,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11707 states to 11707 states and 16802 transitions. [2021-12-16 04:51:46,069 INFO L78 Accepts]: Start accepts. Automaton has 11707 states and 16802 transitions. Word has length 79 [2021-12-16 04:51:46,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:51:46,070 INFO L470 AbstractCegarLoop]: Abstraction has 11707 states and 16802 transitions. [2021-12-16 04:51:46,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 04:51:46,070 INFO L276 IsEmpty]: Start isEmpty. Operand 11707 states and 16802 transitions. [2021-12-16 04:51:46,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-16 04:51:46,076 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:51:46,076 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:51:46,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 04:51:46,077 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-16 04:51:46,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:51:46,078 INFO L85 PathProgramCache]: Analyzing trace with hash -39043552, now seen corresponding path program 1 times [2021-12-16 04:51:46,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:51:46,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012915757] [2021-12-16 04:51:46,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:51:46,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:51:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:46,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 04:51:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:46,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:46,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:51:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:46,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:46,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 04:51:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:46,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:46,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 04:51:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:46,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:46,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 04:51:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:46,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 04:51:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:46,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 04:51:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:46,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:46,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 04:51:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:46,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 04:51:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:46,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 04:51:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-16 04:51:46,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:51:46,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012915757] [2021-12-16 04:51:46,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012915757] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:51:46,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:51:46,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:51:46,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739629967] [2021-12-16 04:51:46,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:51:46,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:51:46,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:51:46,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:51:46,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:51:46,404 INFO L87 Difference]: Start difference. First operand 11707 states and 16802 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-16 04:51:48,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:51:48,674 INFO L93 Difference]: Finished difference Result 23960 states and 34498 transitions. [2021-12-16 04:51:48,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 04:51:48,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2021-12-16 04:51:48,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:51:48,874 INFO L225 Difference]: With dead ends: 23960 [2021-12-16 04:51:48,874 INFO L226 Difference]: Without dead ends: 12307 [2021-12-16 04:51:48,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:51:48,906 INFO L933 BasicCegarLoop]: 2206 mSDtfsCounter, 727 mSDsluCounter, 2314 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 4520 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 04:51:48,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 4520 Invalid, 2122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 04:51:48,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12307 states. [2021-12-16 04:51:49,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12307 to 11707. [2021-12-16 04:51:49,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11707 states, 7347 states have (on average 1.2693616442085205) internal successors, (9326), 7701 states have internal predecessors, (9326), 3722 states have call successors, (3722), 642 states have call predecessors, (3722), 635 states have return successors, (3742), 3572 states have call predecessors, (3742), 3719 states have call successors, (3742) [2021-12-16 04:51:49,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11707 states to 11707 states and 16790 transitions. [2021-12-16 04:51:49,466 INFO L78 Accepts]: Start accepts. Automaton has 11707 states and 16790 transitions. Word has length 107 [2021-12-16 04:51:49,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:51:49,467 INFO L470 AbstractCegarLoop]: Abstraction has 11707 states and 16790 transitions. [2021-12-16 04:51:49,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-16 04:51:49,467 INFO L276 IsEmpty]: Start isEmpty. Operand 11707 states and 16790 transitions. [2021-12-16 04:51:49,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 04:51:49,469 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:51:49,469 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 4, 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] [2021-12-16 04:51:49,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 04:51:49,470 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)] === [2021-12-16 04:51:49,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:51:49,470 INFO L85 PathProgramCache]: Analyzing trace with hash 54654507, now seen corresponding path program 1 times [2021-12-16 04:51:49,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:51:49,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328458572] [2021-12-16 04:51:49,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:51:49,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:51:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:49,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 04:51:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:49,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:49,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:51:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:49,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:49,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 04:51:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:49,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:49,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 04:51:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:49,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:49,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 04:51:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:49,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 04:51:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:49,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 04:51:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:49,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 04:51:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:49,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 04:51:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:49,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:49,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 04:51:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:49,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 04:51:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:49,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 04:51:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-16 04:51:49,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:51:49,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328458572] [2021-12-16 04:51:49,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328458572] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:51:49,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:51:49,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:51:49,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472138271] [2021-12-16 04:51:49,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:51:49,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:51:49,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:51:49,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:51:49,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:51:49,720 INFO L87 Difference]: Start difference. First operand 11707 states and 16790 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 04:51:54,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:51:54,077 INFO L93 Difference]: Finished difference Result 35664 states and 51437 transitions. [2021-12-16 04:51:54,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:51:54,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2021-12-16 04:51:54,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:51:54,238 INFO L225 Difference]: With dead ends: 35664 [2021-12-16 04:51:54,239 INFO L226 Difference]: Without dead ends: 24011 [2021-12-16 04:51:54,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:51:54,302 INFO L933 BasicCegarLoop]: 2601 mSDtfsCounter, 3072 mSDsluCounter, 2432 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 2109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3609 SdHoareTripleChecker+Valid, 5033 SdHoareTripleChecker+Invalid, 4223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2109 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-16 04:51:54,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3609 Valid, 5033 Invalid, 4223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2109 Valid, 2114 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-16 04:51:54,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24011 states. [2021-12-16 04:51:55,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24011 to 22789. [2021-12-16 04:51:55,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22789 states, 14272 states have (on average 1.2720011210762332) internal successors, (18154), 14946 states have internal predecessors, (18154), 7281 states have call successors, (7281), 1246 states have call predecessors, (7281), 1233 states have return successors, (7324), 7014 states have call predecessors, (7324), 7278 states have call successors, (7324) [2021-12-16 04:51:55,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22789 states to 22789 states and 32759 transitions. [2021-12-16 04:51:55,661 INFO L78 Accepts]: Start accepts. Automaton has 22789 states and 32759 transitions. Word has length 123 [2021-12-16 04:51:55,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:51:55,663 INFO L470 AbstractCegarLoop]: Abstraction has 22789 states and 32759 transitions. [2021-12-16 04:51:55,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 04:51:55,663 INFO L276 IsEmpty]: Start isEmpty. Operand 22789 states and 32759 transitions. [2021-12-16 04:51:55,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 04:51:55,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:51:55,665 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 4, 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] [2021-12-16 04:51:55,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 04:51:55,665 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)] === [2021-12-16 04:51:55,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:51:55,666 INFO L85 PathProgramCache]: Analyzing trace with hash 477356333, now seen corresponding path program 1 times [2021-12-16 04:51:55,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:51:55,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372319713] [2021-12-16 04:51:55,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:51:55,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:51:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:55,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 04:51:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:55,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:55,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:51:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:55,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:55,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 04:51:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:55,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:55,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 04:51:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:55,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:55,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 04:51:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:55,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 04:51:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:55,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 04:51:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:55,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 04:51:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:55,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 04:51:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:55,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:51:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:55,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 04:51:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:55,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 04:51:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:55,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 04:51:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:51:55,952 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-16 04:51:55,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:51:55,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372319713] [2021-12-16 04:51:55,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372319713] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:51:55,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:51:55,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:51:55,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716005096] [2021-12-16 04:51:55,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:51:55,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:51:55,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:51:55,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:51:55,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:51:55,954 INFO L87 Difference]: Start difference. First operand 22789 states and 32759 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-16 04:51:59,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:51:59,414 INFO L93 Difference]: Finished difference Result 23995 states and 34672 transitions. [2021-12-16 04:51:59,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:51:59,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2021-12-16 04:51:59,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:51:59,539 INFO L225 Difference]: With dead ends: 23995 [2021-12-16 04:51:59,540 INFO L226 Difference]: Without dead ends: 23993 [2021-12-16 04:51:59,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-16 04:51:59,563 INFO L933 BasicCegarLoop]: 2198 mSDtfsCounter, 2404 mSDsluCounter, 3923 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 1580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2618 SdHoareTripleChecker+Valid, 6121 SdHoareTripleChecker+Invalid, 4086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1580 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-16 04:51:59,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2618 Valid, 6121 Invalid, 4086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1580 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-16 04:51:59,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23993 states. [2021-12-16 04:52:00,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23993 to 22793. [2021-12-16 04:52:00,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22793 states, 14275 states have (on average 1.2719439579684764) internal successors, (18157), 14949 states have internal predecessors, (18157), 7281 states have call successors, (7281), 1247 states have call predecessors, (7281), 1234 states have return successors, (7324), 7014 states have call predecessors, (7324), 7278 states have call successors, (7324) [2021-12-16 04:52:00,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22793 states to 22793 states and 32762 transitions. [2021-12-16 04:52:00,703 INFO L78 Accepts]: Start accepts. Automaton has 22793 states and 32762 transitions. Word has length 123 [2021-12-16 04:52:00,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:52:00,704 INFO L470 AbstractCegarLoop]: Abstraction has 22793 states and 32762 transitions. [2021-12-16 04:52:00,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-16 04:52:00,704 INFO L276 IsEmpty]: Start isEmpty. Operand 22793 states and 32762 transitions. [2021-12-16 04:52:00,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-16 04:52:00,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:52:00,707 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:52:00,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 04:52:00,707 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-16 04:52:00,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:52:00,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1319786659, now seen corresponding path program 1 times [2021-12-16 04:52:00,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:52:00,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317318026] [2021-12-16 04:52:00,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:52:00,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:52:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 04:52:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:52:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:52:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:52:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 04:52:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:52:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 04:52:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:52:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 04:52:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 04:52:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 04:52:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 04:52:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 04:52:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:52:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 04:52:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 04:52:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 04:52:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-16 04:52:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:52:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-16 04:52:00,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:52:00,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317318026] [2021-12-16 04:52:00,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317318026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:52:00,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:52:00,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:52:00,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491392644] [2021-12-16 04:52:00,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:52:00,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:52:00,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:52:00,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:52:00,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:52:00,951 INFO L87 Difference]: Start difference. First operand 22793 states and 32762 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, (16), 4 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14)