./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.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 5afcd851c0eed3ee93d773a0172936a989a39cd6889ca2587c3b833a21bc8a3a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 17:31:38,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 17:31:38,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 17:31:38,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 17:31:38,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 17:31:38,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 17:31:38,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 17:31:38,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 17:31:38,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 17:31:38,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 17:31:38,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 17:31:38,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 17:31:38,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 17:31:38,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 17:31:38,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 17:31:38,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 17:31:38,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 17:31:38,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 17:31:38,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 17:31:38,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 17:31:38,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 17:31:38,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 17:31:38,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 17:31:38,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 17:31:38,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 17:31:38,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 17:31:38,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 17:31:38,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 17:31:38,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 17:31:38,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 17:31:38,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 17:31:38,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 17:31:38,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 17:31:38,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 17:31:38,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 17:31:38,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 17:31:38,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 17:31:38,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 17:31:38,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 17:31:38,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 17:31:38,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 17:31:38,958 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 17:31:38,973 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 17:31:38,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 17:31:38,974 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 17:31:38,974 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 17:31:38,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 17:31:38,975 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 17:31:38,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 17:31:38,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 17:31:38,975 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 17:31:38,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 17:31:38,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 17:31:38,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 17:31:38,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 17:31:38,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 17:31:38,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 17:31:38,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 17:31:38,976 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 17:31:38,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 17:31:38,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 17:31:38,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 17:31:38,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 17:31:38,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 17:31:38,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 17:31:38,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 17:31:38,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 17:31:38,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 17:31:38,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 17:31:38,978 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 17:31:38,978 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 17:31:38,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 17:31:38,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 17:31:38,979 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5afcd851c0eed3ee93d773a0172936a989a39cd6889ca2587c3b833a21bc8a3a [2021-12-21 17:31:39,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 17:31:39,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 17:31:39,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 17:31:39,184 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 17:31:39,185 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 17:31:39,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-12-21 17:31:39,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7b555453/678dc2e6df734a21a07272bb6f3d40e4/FLAG85010b4e9 [2021-12-21 17:31:39,887 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 17:31:39,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-12-21 17:31:39,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7b555453/678dc2e6df734a21a07272bb6f3d40e4/FLAG85010b4e9 [2021-12-21 17:31:39,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7b555453/678dc2e6df734a21a07272bb6f3d40e4 [2021-12-21 17:31:39,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 17:31:39,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 17:31:40,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 17:31:40,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 17:31:40,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 17:31:40,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:31:39" (1/1) ... [2021-12-21 17:31:40,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a3ce6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:31:40, skipping insertion in model container [2021-12-21 17:31:40,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:31:39" (1/1) ... [2021-12-21 17:31:40,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 17:31:40,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 17:31:42,699 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410165,410178] [2021-12-21 17:31:42,701 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410334,410347] [2021-12-21 17:31:42,702 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410501,410514] [2021-12-21 17:31:42,702 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410669,410682] [2021-12-21 17:31:42,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 17:31:42,762 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 17:31:42,985 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410165,410178] [2021-12-21 17:31:42,986 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410334,410347] [2021-12-21 17:31:42,986 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410501,410514] [2021-12-21 17:31:42,986 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410669,410682] [2021-12-21 17:31:42,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 17:31:43,170 INFO L208 MainTranslator]: Completed translation [2021-12-21 17:31:43,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:31:43 WrapperNode [2021-12-21 17:31:43,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 17:31:43,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 17:31:43,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 17:31:43,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 17:31:43,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:31:43" (1/1) ... [2021-12-21 17:31:43,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:31:43" (1/1) ... [2021-12-21 17:31:43,397 INFO L137 Inliner]: procedures = 541, calls = 2827, calls flagged for inlining = 282, calls inlined = 248, statements flattened = 7252 [2021-12-21 17:31:43,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 17:31:43,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 17:31:43,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 17:31:43,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 17:31:43,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:31:43" (1/1) ... [2021-12-21 17:31:43,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:31:43" (1/1) ... [2021-12-21 17:31:43,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:31:43" (1/1) ... [2021-12-21 17:31:43,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:31:43" (1/1) ... [2021-12-21 17:31:43,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:31:43" (1/1) ... [2021-12-21 17:31:43,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:31:43" (1/1) ... [2021-12-21 17:31:43,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:31:43" (1/1) ... [2021-12-21 17:31:43,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 17:31:43,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 17:31:43,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 17:31:43,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 17:31:43,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:31:43" (1/1) ... [2021-12-21 17:31:43,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 17:31:43,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 17:31:43,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 17:31:43,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 17:31:43,741 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-12-21 17:31:43,742 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-12-21 17:31:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-21 17:31:43,742 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-21 17:31:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-12-21 17:31:43,742 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-12-21 17:31:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-21 17:31:43,742 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-21 17:31:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 17:31:43,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 17:31:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-21 17:31:43,743 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-21 17:31:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-12-21 17:31:43,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-12-21 17:31:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-21 17:31:43,743 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-21 17:31:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-21 17:31:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-21 17:31:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_63 [2021-12-21 17:31:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_63 [2021-12-21 17:31:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_interrupt [2021-12-21 17:31:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_interrupt [2021-12-21 17:31:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-12-21 17:31:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-12-21 17:31:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-21 17:31:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-21 17:31:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-21 17:31:43,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-12-21 17:31:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-21 17:31:43,745 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-21 17:31:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-21 17:31:43,745 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-21 17:31:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-21 17:31:43,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-21 17:31:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-21 17:31:43,746 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-21 17:31:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 17:31:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_write_bcr [2021-12-21 17:31:43,746 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_write_bcr [2021-12-21 17:31:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-21 17:31:43,746 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-21 17:31:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-21 17:31:43,747 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-21 17:31:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 17:31:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-21 17:31:43,747 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-21 17:31:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-12-21 17:31:43,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-12-21 17:31:43,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 17:31:43,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-12-21 17:31:43,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-12-21 17:31:43,749 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_purge_tx_ring [2021-12-21 17:31:43,749 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_purge_tx_ring [2021-12-21 17:31:43,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 17:31:43,749 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-21 17:31:43,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-21 17:31:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-21 17:31:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-21 17:31:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_write_bcr [2021-12-21 17:31:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_write_bcr [2021-12-21 17:31:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-12-21 17:31:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-12-21 17:31:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-12-21 17:31:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-12-21 17:31:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-12-21 17:31:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-12-21 17:31:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-21 17:31:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-21 17:31:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-21 17:31:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-21 17:31:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_netif_start [2021-12-21 17:31:43,752 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_netif_start [2021-12-21 17:31:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-12-21 17:31:43,752 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-12-21 17:31:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~~u16~0 [2021-12-21 17:31:43,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~~u16~0 [2021-12-21 17:31:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-12-21 17:31:43,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-12-21 17:31:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 17:31:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-12-21 17:31:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-12-21 17:31:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_open [2021-12-21 17:31:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_open [2021-12-21 17:31:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 17:31:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-12-21 17:31:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-12-21 17:31:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-21 17:31:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-21 17:31:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-21 17:31:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-21 17:31:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 17:31:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-21 17:31:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 17:31:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 17:31:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_reset [2021-12-21 17:31:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_reset [2021-12-21 17:31:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_pcnet32_private [2021-12-21 17:31:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_pcnet32_private [2021-12-21 17:31:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-21 17:31:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-21 17:31:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_restart [2021-12-21 17:31:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_restart [2021-12-21 17:31:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-12-21 17:31:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-12-21 17:31:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-12-21 17:31:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-12-21 17:31:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-21 17:31:43,757 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-21 17:31:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-21 17:31:43,757 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-21 17:31:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-12-21 17:31:43,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-12-21 17:31:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_read_csr [2021-12-21 17:31:43,763 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_read_csr [2021-12-21 17:31:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-12-21 17:31:43,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-12-21 17:31:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-21 17:31:43,763 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-21 17:31:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_reset [2021-12-21 17:31:43,763 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_reset [2021-12-21 17:31:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-12-21 17:31:43,763 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-12-21 17:31:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 17:31:43,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 17:31:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-21 17:31:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-21 17:31:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 17:31:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 17:31:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 17:31:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 17:31:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_pm_resume [2021-12-21 17:31:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_pm_resume [2021-12-21 17:31:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-12-21 17:31:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-12-21 17:31:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_check_media [2021-12-21 17:31:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_check_media [2021-12-21 17:31:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_get_regs_len [2021-12-21 17:31:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_get_regs_len [2021-12-21 17:31:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-12-21 17:31:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-12-21 17:31:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-12-21 17:31:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_poll_controller [2021-12-21 17:31:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_poll_controller [2021-12-21 17:31:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_free_ring [2021-12-21 17:31:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_free_ring [2021-12-21 17:31:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-21 17:31:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-21 17:31:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-21 17:31:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-21 17:31:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-12-21 17:31:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-12-21 17:31:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-21 17:31:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-21 17:31:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-12-21 17:31:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-12-21 17:31:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_gset [2021-12-21 17:31:43,766 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_gset [2021-12-21 17:31:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_purge_rx_ring [2021-12-21 17:31:43,766 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_purge_rx_ring [2021-12-21 17:31:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_write_csr [2021-12-21 17:31:43,766 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_write_csr [2021-12-21 17:31:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_tx_timeout [2021-12-21 17:31:43,766 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_tx_timeout [2021-12-21 17:31:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-21 17:31:43,766 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-21 17:31:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 17:31:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_netif_stop [2021-12-21 17:31:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_netif_stop [2021-12-21 17:31:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-21 17:31:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-21 17:31:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 17:31:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_pcnet32_private [2021-12-21 17:31:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_pcnet32_private [2021-12-21 17:31:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 17:31:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_read_csr [2021-12-21 17:31:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_read_csr [2021-12-21 17:31:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_set_multicast_list [2021-12-21 17:31:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_set_multicast_list [2021-12-21 17:31:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-12-21 17:31:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-12-21 17:31:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-21 17:31:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-21 17:31:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure mii_link_ok [2021-12-21 17:31:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_link_ok [2021-12-21 17:31:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-12-21 17:31:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-12-21 17:31:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_probe1 [2021-12-21 17:31:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_probe1 [2021-12-21 17:31:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-12-21 17:31:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-12-21 17:31:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-12-21 17:31:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-12-21 17:31:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_remove_one [2021-12-21 17:31:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_remove_one [2021-12-21 17:31:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_sset [2021-12-21 17:31:43,770 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_sset [2021-12-21 17:31:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~~u16~0~TO~VOID [2021-12-21 17:31:43,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~~u16~0~TO~VOID [2021-12-21 17:31:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_read_bcr [2021-12-21 17:31:43,770 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_read_bcr [2021-12-21 17:31:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-21 17:31:43,770 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-21 17:31:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-12-21 17:31:43,770 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-12-21 17:31:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-21 17:31:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-21 17:31:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_read_bcr [2021-12-21 17:31:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_read_bcr [2021-12-21 17:31:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-21 17:31:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-21 17:31:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_init_ring [2021-12-21 17:31:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_init_ring [2021-12-21 17:31:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_close [2021-12-21 17:31:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_close [2021-12-21 17:31:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-12-21 17:31:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-12-21 17:31:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 17:31:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 17:31:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 17:31:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_suspend [2021-12-21 17:31:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_suspend [2021-12-21 17:31:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 17:31:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 17:31:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-21 17:31:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-21 17:31:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-21 17:31:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-21 17:31:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_write_csr [2021-12-21 17:31:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_write_csr [2021-12-21 17:31:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_load_multicast [2021-12-21 17:31:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_load_multicast [2021-12-21 17:31:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-12-21 17:31:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-12-21 17:31:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_nway_reset [2021-12-21 17:31:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_nway_reset [2021-12-21 17:31:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-12-21 17:31:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-12-21 17:31:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-12-21 17:31:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-12-21 17:31:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-21 17:31:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-21 17:31:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-21 17:31:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-21 17:31:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-12-21 17:31:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-12-21 17:31:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 17:31:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2021-12-21 17:31:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2021-12-21 17:31:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2021-12-21 17:31:43,779 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2021-12-21 17:31:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-21 17:31:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-21 17:31:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-12-21 17:31:43,783 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-12-21 17:31:44,527 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 17:31:44,530 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 17:31:44,663 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 17:31:51,124 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 17:31:51,137 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 17:31:51,137 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-12-21 17:31:51,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:31:51 BoogieIcfgContainer [2021-12-21 17:31:51,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 17:31:51,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 17:31:51,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 17:31:51,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 17:31:51,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:31:39" (1/3) ... [2021-12-21 17:31:51,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330941e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:31:51, skipping insertion in model container [2021-12-21 17:31:51,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:31:43" (2/3) ... [2021-12-21 17:31:51,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330941e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:31:51, skipping insertion in model container [2021-12-21 17:31:51,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:31:51" (3/3) ... [2021-12-21 17:31:51,146 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-12-21 17:31:51,150 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 17:31:51,150 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-12-21 17:31:51,197 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 17:31:51,204 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 17:31:51,204 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-21 17:31:51,263 INFO L276 IsEmpty]: Start isEmpty. Operand has 2400 states, 1634 states have (on average 1.281517747858017) internal successors, (2094), 1699 states have internal predecessors, (2094), 647 states have call successors, (647), 118 states have call predecessors, (647), 117 states have return successors, (639), 620 states have call predecessors, (639), 639 states have call successors, (639) [2021-12-21 17:31:51,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-21 17:31:51,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:31:51,272 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-12-21 17:31:51,272 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:31:51,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:31:51,276 INFO L85 PathProgramCache]: Analyzing trace with hash 767019003, now seen corresponding path program 1 times [2021-12-21 17:31:51,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:31:51,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576094141] [2021-12-21 17:31:51,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:31:51,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:31:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:51,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:31:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:51,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:31:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:51,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 17:31:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:51,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:31:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:51,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 17:31:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:51,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:31:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:51,748 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-21 17:31:51,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:31:51,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576094141] [2021-12-21 17:31:51,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576094141] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:31:51,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:31:51,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 17:31:51,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881692507] [2021-12-21 17:31:51,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:31:51,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:31:51,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:31:51,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:31:51,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:31:51,805 INFO L87 Difference]: Start difference. First operand has 2400 states, 1634 states have (on average 1.281517747858017) internal successors, (2094), 1699 states have internal predecessors, (2094), 647 states have call successors, (647), 118 states have call predecessors, (647), 117 states have return successors, (639), 620 states have call predecessors, (639), 639 states have call successors, (639) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-21 17:31:52,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:31:52,864 INFO L93 Difference]: Finished difference Result 7077 states and 10224 transitions. [2021-12-21 17:31:52,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:31:52,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 57 [2021-12-21 17:31:52,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:31:52,910 INFO L225 Difference]: With dead ends: 7077 [2021-12-21 17:31:52,911 INFO L226 Difference]: Without dead ends: 4682 [2021-12-21 17:31:52,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:31:52,945 INFO L933 BasicCegarLoop]: 3932 mSDtfsCounter, 3290 mSDsluCounter, 3269 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3290 SdHoareTripleChecker+Valid, 7201 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 17:31:52,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3290 Valid, 7201 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 17:31:52,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2021-12-21 17:31:53,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 4645. [2021-12-21 17:31:53,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4645 states, 3161 states have (on average 1.2654223347042075) internal successors, (4000), 3274 states have internal predecessors, (4000), 1250 states have call successors, (1250), 232 states have call predecessors, (1250), 231 states have return successors, (1249), 1207 states have call predecessors, (1249), 1247 states have call successors, (1249) [2021-12-21 17:31:53,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4645 states to 4645 states and 6499 transitions. [2021-12-21 17:31:53,262 INFO L78 Accepts]: Start accepts. Automaton has 4645 states and 6499 transitions. Word has length 57 [2021-12-21 17:31:53,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:31:53,263 INFO L470 AbstractCegarLoop]: Abstraction has 4645 states and 6499 transitions. [2021-12-21 17:31:53,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-21 17:31:53,264 INFO L276 IsEmpty]: Start isEmpty. Operand 4645 states and 6499 transitions. [2021-12-21 17:31:53,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-21 17:31:53,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:31:53,271 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-12-21 17:31:53,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 17:31:53,272 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:31:53,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:31:53,273 INFO L85 PathProgramCache]: Analyzing trace with hash 694632445, now seen corresponding path program 1 times [2021-12-21 17:31:53,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:31:53,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761975241] [2021-12-21 17:31:53,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:31:53,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:31:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:53,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:31:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:53,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:31:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:53,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 17:31:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:53,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:31:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:53,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 17:31:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:53,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:31:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-21 17:31:53,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:31:53,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761975241] [2021-12-21 17:31:53,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761975241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:31:53,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:31:53,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:31:53,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838534519] [2021-12-21 17:31:53,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:31:53,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:31:53,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:31:53,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:31:53,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:31:53,475 INFO L87 Difference]: Start difference. First operand 4645 states and 6499 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-21 17:31:53,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:31:53,624 INFO L93 Difference]: Finished difference Result 4717 states and 6569 transitions. [2021-12-21 17:31:53,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:31:53,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2021-12-21 17:31:53,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:31:53,649 INFO L225 Difference]: With dead ends: 4717 [2021-12-21 17:31:53,649 INFO L226 Difference]: Without dead ends: 4715 [2021-12-21 17:31:53,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:31:53,655 INFO L933 BasicCegarLoop]: 3295 mSDtfsCounter, 3247 mSDsluCounter, 6621 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3259 SdHoareTripleChecker+Valid, 9916 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:31:53,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3259 Valid, 9916 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:31:53,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2021-12-21 17:31:53,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 4713. [2021-12-21 17:31:53,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4713 states, 3206 states have (on average 1.2635683094198378) internal successors, (4051), 3323 states have internal predecessors, (4051), 1258 states have call successors, (1258), 247 states have call predecessors, (1258), 246 states have return successors, (1257), 1215 states have call predecessors, (1257), 1255 states have call successors, (1257) [2021-12-21 17:31:53,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4713 states to 4713 states and 6566 transitions. [2021-12-21 17:31:53,885 INFO L78 Accepts]: Start accepts. Automaton has 4713 states and 6566 transitions. Word has length 57 [2021-12-21 17:31:53,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:31:53,886 INFO L470 AbstractCegarLoop]: Abstraction has 4713 states and 6566 transitions. [2021-12-21 17:31:53,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-21 17:31:53,886 INFO L276 IsEmpty]: Start isEmpty. Operand 4713 states and 6566 transitions. [2021-12-21 17:31:53,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-21 17:31:53,887 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:31:53,887 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:31:53,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 17:31:53,888 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:31:53,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:31:53,888 INFO L85 PathProgramCache]: Analyzing trace with hash -86012226, now seen corresponding path program 1 times [2021-12-21 17:31:53,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:31:53,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753877895] [2021-12-21 17:31:53,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:31:53,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:31:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:54,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:31:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:54,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:31:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:54,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 17:31:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:54,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:31:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:54,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 17:31:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:54,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:31:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:54,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 17:31:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:54,071 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-21 17:31:54,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:31:54,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753877895] [2021-12-21 17:31:54,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753877895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:31:54,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:31:54,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:31:54,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255330185] [2021-12-21 17:31:54,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:31:54,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:31:54,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:31:54,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:31:54,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:31:54,073 INFO L87 Difference]: Start difference. First operand 4713 states and 6566 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-21 17:31:54,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:31:54,229 INFO L93 Difference]: Finished difference Result 4719 states and 6571 transitions. [2021-12-21 17:31:54,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:31:54,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2021-12-21 17:31:54,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:31:54,253 INFO L225 Difference]: With dead ends: 4719 [2021-12-21 17:31:54,253 INFO L226 Difference]: Without dead ends: 4717 [2021-12-21 17:31:54,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:31:54,260 INFO L933 BasicCegarLoop]: 3294 mSDtfsCounter, 3256 mSDsluCounter, 6568 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3267 SdHoareTripleChecker+Valid, 9862 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:31:54,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3267 Valid, 9862 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:31:54,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4717 states. [2021-12-21 17:31:54,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4717 to 4717. [2021-12-21 17:31:54,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4717 states, 3209 states have (on average 1.2633219071361794) internal successors, (4054), 3326 states have internal predecessors, (4054), 1258 states have call successors, (1258), 248 states have call predecessors, (1258), 247 states have return successors, (1257), 1215 states have call predecessors, (1257), 1255 states have call successors, (1257) [2021-12-21 17:31:54,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4717 states to 4717 states and 6569 transitions. [2021-12-21 17:31:54,464 INFO L78 Accepts]: Start accepts. Automaton has 4717 states and 6569 transitions. Word has length 62 [2021-12-21 17:31:54,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:31:54,465 INFO L470 AbstractCegarLoop]: Abstraction has 4717 states and 6569 transitions. [2021-12-21 17:31:54,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-21 17:31:54,467 INFO L276 IsEmpty]: Start isEmpty. Operand 4717 states and 6569 transitions. [2021-12-21 17:31:54,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-21 17:31:54,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:31:54,468 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:31:54,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 17:31:54,469 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:31:54,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:31:54,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1210292131, now seen corresponding path program 1 times [2021-12-21 17:31:54,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:31:54,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192081592] [2021-12-21 17:31:54,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:31:54,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:31:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:54,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:31:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:54,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:31:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:54,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 17:31:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:54,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:31:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:54,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 17:31:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:54,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:31:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:54,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 17:31:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:54,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:31:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:54,685 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-21 17:31:54,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:31:54,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192081592] [2021-12-21 17:31:54,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192081592] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:31:54,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:31:54,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:31:54,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474610119] [2021-12-21 17:31:54,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:31:54,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:31:54,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:31:54,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:31:54,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:31:54,688 INFO L87 Difference]: Start difference. First operand 4717 states and 6569 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 17:31:54,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:31:54,839 INFO L93 Difference]: Finished difference Result 4723 states and 6574 transitions. [2021-12-21 17:31:54,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:31:54,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2021-12-21 17:31:54,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:31:54,864 INFO L225 Difference]: With dead ends: 4723 [2021-12-21 17:31:54,864 INFO L226 Difference]: Without dead ends: 4721 [2021-12-21 17:31:54,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:31:54,871 INFO L933 BasicCegarLoop]: 3294 mSDtfsCounter, 3256 mSDsluCounter, 6568 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3266 SdHoareTripleChecker+Valid, 9862 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:31:54,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3266 Valid, 9862 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:31:54,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4721 states. [2021-12-21 17:31:55,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4721 to 4721. [2021-12-21 17:31:55,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4721 states, 3212 states have (on average 1.2630759651307597) internal successors, (4057), 3329 states have internal predecessors, (4057), 1258 states have call successors, (1258), 249 states have call predecessors, (1258), 248 states have return successors, (1257), 1215 states have call predecessors, (1257), 1255 states have call successors, (1257) [2021-12-21 17:31:55,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4721 states to 4721 states and 6572 transitions. [2021-12-21 17:31:55,069 INFO L78 Accepts]: Start accepts. Automaton has 4721 states and 6572 transitions. Word has length 67 [2021-12-21 17:31:55,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:31:55,070 INFO L470 AbstractCegarLoop]: Abstraction has 4721 states and 6572 transitions. [2021-12-21 17:31:55,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 17:31:55,070 INFO L276 IsEmpty]: Start isEmpty. Operand 4721 states and 6572 transitions. [2021-12-21 17:31:55,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-21 17:31:55,071 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:31:55,071 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2021-12-21 17:31:55,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 17:31:55,072 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)] === [2021-12-21 17:31:55,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:31:55,072 INFO L85 PathProgramCache]: Analyzing trace with hash 326029790, now seen corresponding path program 1 times [2021-12-21 17:31:55,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:31:55,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583200346] [2021-12-21 17:31:55,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:31:55,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:31:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:31:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:31:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 17:31:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:31:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 17:31:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:31:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 17:31:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:31:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 17:31:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,248 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-21 17:31:55,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:31:55,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583200346] [2021-12-21 17:31:55,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583200346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:31:55,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:31:55,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:31:55,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696691026] [2021-12-21 17:31:55,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:31:55,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:31:55,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:31:55,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:31:55,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:31:55,250 INFO L87 Difference]: Start difference. First operand 4721 states and 6572 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 17:31:55,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:31:55,393 INFO L93 Difference]: Finished difference Result 4727 states and 6577 transitions. [2021-12-21 17:31:55,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:31:55,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 72 [2021-12-21 17:31:55,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:31:55,416 INFO L225 Difference]: With dead ends: 4727 [2021-12-21 17:31:55,416 INFO L226 Difference]: Without dead ends: 4725 [2021-12-21 17:31:55,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:31:55,422 INFO L933 BasicCegarLoop]: 3294 mSDtfsCounter, 3256 mSDsluCounter, 6568 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3265 SdHoareTripleChecker+Valid, 9862 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:31:55,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3265 Valid, 9862 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:31:55,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4725 states. [2021-12-21 17:31:55,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4725 to 4725. [2021-12-21 17:31:55,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4725 states, 3215 states have (on average 1.2628304821150855) internal successors, (4060), 3332 states have internal predecessors, (4060), 1258 states have call successors, (1258), 250 states have call predecessors, (1258), 249 states have return successors, (1257), 1215 states have call predecessors, (1257), 1255 states have call successors, (1257) [2021-12-21 17:31:55,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 6575 transitions. [2021-12-21 17:31:55,622 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 6575 transitions. Word has length 72 [2021-12-21 17:31:55,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:31:55,622 INFO L470 AbstractCegarLoop]: Abstraction has 4725 states and 6575 transitions. [2021-12-21 17:31:55,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 17:31:55,624 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 6575 transitions. [2021-12-21 17:31:55,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-21 17:31:55,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:31:55,625 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 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] [2021-12-21 17:31:55,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 17:31:55,626 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:31:55,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:31:55,626 INFO L85 PathProgramCache]: Analyzing trace with hash 741623997, now seen corresponding path program 1 times [2021-12-21 17:31:55,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:31:55,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374756739] [2021-12-21 17:31:55,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:31:55,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:31:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:31:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:31:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 17:31:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:31:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 17:31:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:31:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 17:31:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:31:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 17:31:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 17:31:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:55,848 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-21 17:31:55,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:31:55,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374756739] [2021-12-21 17:31:55,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374756739] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:31:55,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:31:55,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:31:55,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494972932] [2021-12-21 17:31:55,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:31:55,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:31:55,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:31:55,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:31:55,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:31:55,851 INFO L87 Difference]: Start difference. First operand 4725 states and 6575 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 17:31:56,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:31:56,004 INFO L93 Difference]: Finished difference Result 4731 states and 6580 transitions. [2021-12-21 17:31:56,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:31:56,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 77 [2021-12-21 17:31:56,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:31:56,043 INFO L225 Difference]: With dead ends: 4731 [2021-12-21 17:31:56,043 INFO L226 Difference]: Without dead ends: 4729 [2021-12-21 17:31:56,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:31:56,050 INFO L933 BasicCegarLoop]: 3294 mSDtfsCounter, 3256 mSDsluCounter, 6568 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3264 SdHoareTripleChecker+Valid, 9862 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:31:56,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3264 Valid, 9862 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:31:56,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2021-12-21 17:31:56,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4729. [2021-12-21 17:31:56,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4729 states, 3218 states have (on average 1.2625854568054693) internal successors, (4063), 3335 states have internal predecessors, (4063), 1258 states have call successors, (1258), 251 states have call predecessors, (1258), 250 states have return successors, (1257), 1215 states have call predecessors, (1257), 1255 states have call successors, (1257) [2021-12-21 17:31:56,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4729 states to 4729 states and 6578 transitions. [2021-12-21 17:31:56,266 INFO L78 Accepts]: Start accepts. Automaton has 4729 states and 6578 transitions. Word has length 77 [2021-12-21 17:31:56,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:31:56,268 INFO L470 AbstractCegarLoop]: Abstraction has 4729 states and 6578 transitions. [2021-12-21 17:31:56,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 17:31:56,268 INFO L276 IsEmpty]: Start isEmpty. Operand 4729 states and 6578 transitions. [2021-12-21 17:31:56,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-21 17:31:56,270 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:31:56,270 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:31:56,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 17:31:56,271 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:31:56,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:31:56,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1626448642, now seen corresponding path program 1 times [2021-12-21 17:31:56,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:31:56,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643404906] [2021-12-21 17:31:56,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:31:56,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:31:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:56,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:31:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:56,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:31:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:56,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 17:31:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:56,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:31:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:56,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 17:31:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:56,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:31:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:56,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 17:31:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:56,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:31:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:56,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 17:31:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:56,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 17:31:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:56,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 17:31:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-21 17:31:56,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:31:56,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643404906] [2021-12-21 17:31:56,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643404906] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:31:56,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:31:56,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:31:56,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453548056] [2021-12-21 17:31:56,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:31:56,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:31:56,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:31:56,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:31:56,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:31:56,490 INFO L87 Difference]: Start difference. First operand 4729 states and 6578 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 17:31:56,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:31:56,685 INFO L93 Difference]: Finished difference Result 4735 states and 6583 transitions. [2021-12-21 17:31:56,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:31:56,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 82 [2021-12-21 17:31:56,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:31:56,705 INFO L225 Difference]: With dead ends: 4735 [2021-12-21 17:31:56,706 INFO L226 Difference]: Without dead ends: 4733 [2021-12-21 17:31:56,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:31:56,712 INFO L933 BasicCegarLoop]: 3294 mSDtfsCounter, 3256 mSDsluCounter, 6568 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3263 SdHoareTripleChecker+Valid, 9862 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:31:56,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3263 Valid, 9862 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:31:56,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4733 states. [2021-12-21 17:31:56,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4733 to 4733. [2021-12-21 17:31:56,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4733 states, 3221 states have (on average 1.2623408879230054) internal successors, (4066), 3338 states have internal predecessors, (4066), 1258 states have call successors, (1258), 252 states have call predecessors, (1258), 251 states have return successors, (1257), 1215 states have call predecessors, (1257), 1255 states have call successors, (1257) [2021-12-21 17:31:56,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4733 states to 4733 states and 6581 transitions. [2021-12-21 17:31:56,880 INFO L78 Accepts]: Start accepts. Automaton has 4733 states and 6581 transitions. Word has length 82 [2021-12-21 17:31:56,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:31:56,881 INFO L470 AbstractCegarLoop]: Abstraction has 4733 states and 6581 transitions. [2021-12-21 17:31:56,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 17:31:56,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4733 states and 6581 transitions. [2021-12-21 17:31:56,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-21 17:31:56,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:31:56,886 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:31:56,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 17:31:56,886 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:31:56,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:31:56,887 INFO L85 PathProgramCache]: Analyzing trace with hash 991706208, now seen corresponding path program 1 times [2021-12-21 17:31:56,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:31:56,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462384277] [2021-12-21 17:31:56,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:31:56,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:31:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:31:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:31:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 17:31:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:31:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 17:31:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:31:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 17:31:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 17:31:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 17:31:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 17:31:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 17:31:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 17:31:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 17:31:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-21 17:31:57,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:31:57,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462384277] [2021-12-21 17:31:57,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462384277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:31:57,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:31:57,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 17:31:57,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225651850] [2021-12-21 17:31:57,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:31:57,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:31:57,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:31:57,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:31:57,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:31:57,090 INFO L87 Difference]: Start difference. First operand 4733 states and 6581 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 17:31:57,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:31:57,397 INFO L93 Difference]: Finished difference Result 9114 states and 12648 transitions. [2021-12-21 17:31:57,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:31:57,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 98 [2021-12-21 17:31:57,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:31:57,436 INFO L225 Difference]: With dead ends: 9114 [2021-12-21 17:31:57,436 INFO L226 Difference]: Without dead ends: 9068 [2021-12-21 17:31:57,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:31:57,443 INFO L933 BasicCegarLoop]: 4652 mSDtfsCounter, 2975 mSDsluCounter, 3288 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2975 SdHoareTripleChecker+Valid, 7940 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:31:57,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2975 Valid, 7940 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:31:57,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9068 states. [2021-12-21 17:31:57,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9068 to 9013. [2021-12-21 17:31:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9013 states, 6139 states have (on average 1.263723733507086) internal successors, (7758), 6353 states have internal predecessors, (7758), 2390 states have call successors, (2390), 482 states have call predecessors, (2390), 481 states have return successors, (2390), 2312 states have call predecessors, (2390), 2387 states have call successors, (2390) [2021-12-21 17:31:57,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9013 states to 9013 states and 12538 transitions. [2021-12-21 17:31:57,794 INFO L78 Accepts]: Start accepts. Automaton has 9013 states and 12538 transitions. Word has length 98 [2021-12-21 17:31:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:31:57,794 INFO L470 AbstractCegarLoop]: Abstraction has 9013 states and 12538 transitions. [2021-12-21 17:31:57,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 17:31:57,795 INFO L276 IsEmpty]: Start isEmpty. Operand 9013 states and 12538 transitions. [2021-12-21 17:31:57,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-21 17:31:57,796 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:31:57,796 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 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] [2021-12-21 17:31:57,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 17:31:57,797 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:31:57,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:31:57,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1953030429, now seen corresponding path program 1 times [2021-12-21 17:31:57,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:31:57,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268246501] [2021-12-21 17:31:57,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:31:57,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:31:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:31:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:31:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 17:31:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:31:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 17:31:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:31:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 17:31:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:31:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 17:31:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 17:31:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:57,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 17:31:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:58,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 17:31:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:58,008 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-21 17:31:58,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:31:58,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268246501] [2021-12-21 17:31:58,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268246501] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:31:58,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:31:58,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:31:58,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818836465] [2021-12-21 17:31:58,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:31:58,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:31:58,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:31:58,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:31:58,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:31:58,010 INFO L87 Difference]: Start difference. First operand 9013 states and 12538 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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) [2021-12-21 17:31:58,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:31:58,289 INFO L93 Difference]: Finished difference Result 9019 states and 12543 transitions. [2021-12-21 17:31:58,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:31:58,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 87 [2021-12-21 17:31:58,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:31:58,323 INFO L225 Difference]: With dead ends: 9019 [2021-12-21 17:31:58,324 INFO L226 Difference]: Without dead ends: 9017 [2021-12-21 17:31:58,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:31:58,331 INFO L933 BasicCegarLoop]: 3294 mSDtfsCounter, 3256 mSDsluCounter, 6568 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3262 SdHoareTripleChecker+Valid, 9862 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:31:58,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3262 Valid, 9862 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:31:58,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9017 states. [2021-12-21 17:31:58,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9017 to 9017. [2021-12-21 17:31:58,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9017 states, 6142 states have (on average 1.2635949202214263) internal successors, (7761), 6356 states have internal predecessors, (7761), 2390 states have call successors, (2390), 483 states have call predecessors, (2390), 482 states have return successors, (2390), 2312 states have call predecessors, (2390), 2387 states have call successors, (2390) [2021-12-21 17:31:58,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9017 states to 9017 states and 12541 transitions. [2021-12-21 17:31:58,660 INFO L78 Accepts]: Start accepts. Automaton has 9017 states and 12541 transitions. Word has length 87 [2021-12-21 17:31:58,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:31:58,660 INFO L470 AbstractCegarLoop]: Abstraction has 9017 states and 12541 transitions. [2021-12-21 17:31:58,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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) [2021-12-21 17:31:58,660 INFO L276 IsEmpty]: Start isEmpty. Operand 9017 states and 12541 transitions. [2021-12-21 17:31:58,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-21 17:31:58,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:31:58,662 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:31:58,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 17:31:58,662 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:31:58,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:31:58,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1232671421, now seen corresponding path program 1 times [2021-12-21 17:31:58,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:31:58,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624516750] [2021-12-21 17:31:58,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:31:58,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:31:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:58,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:31:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:58,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:31:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:58,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 17:31:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:58,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:31:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:58,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 17:31:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:58,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:31:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:58,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 17:31:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:58,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 17:31:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:58,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 17:31:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:58,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 17:31:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:58,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 17:31:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:58,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 17:31:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:58,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 17:31:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:58,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 17:31:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:31:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-21 17:31:58,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:31:58,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624516750] [2021-12-21 17:31:58,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624516750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:31:58,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:31:58,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 17:31:58,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549671903] [2021-12-21 17:31:58,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:31:58,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:31:58,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:31:58,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:31:58,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:31:58,893 INFO L87 Difference]: Start difference. First operand 9017 states and 12541 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 17:32:00,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:32:00,444 INFO L93 Difference]: Finished difference Result 9648 states and 13306 transitions. [2021-12-21 17:32:00,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:32:00,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (16), 2 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 103 [2021-12-21 17:32:00,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:32:00,483 INFO L225 Difference]: With dead ends: 9648 [2021-12-21 17:32:00,484 INFO L226 Difference]: Without dead ends: 9078 [2021-12-21 17:32:00,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:32:00,493 INFO L933 BasicCegarLoop]: 5529 mSDtfsCounter, 3261 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3261 SdHoareTripleChecker+Valid, 8772 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 17:32:00,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3261 Valid, 8772 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 17:32:00,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9078 states. [2021-12-21 17:32:00,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9078 to 9018. [2021-12-21 17:32:00,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9018 states, 6143 states have (on average 1.2633892235064301) internal successors, (7761), 6357 states have internal predecessors, (7761), 2390 states have call successors, (2390), 483 states have call predecessors, (2390), 482 states have return successors, (2390), 2312 states have call predecessors, (2390), 2387 states have call successors, (2390) [2021-12-21 17:32:00,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9018 states to 9018 states and 12541 transitions. [2021-12-21 17:32:00,818 INFO L78 Accepts]: Start accepts. Automaton has 9018 states and 12541 transitions. Word has length 103 [2021-12-21 17:32:00,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:32:00,819 INFO L470 AbstractCegarLoop]: Abstraction has 9018 states and 12541 transitions. [2021-12-21 17:32:00,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 17:32:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 9018 states and 12541 transitions. [2021-12-21 17:32:00,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-21 17:32:00,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:32:00,821 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 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] [2021-12-21 17:32:00,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 17:32:00,821 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:32:00,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:32:00,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1543778334, now seen corresponding path program 1 times [2021-12-21 17:32:00,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:32:00,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693821285] [2021-12-21 17:32:00,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:32:00,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:32:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:00,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:32:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:00,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:32:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:00,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 17:32:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:00,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:00,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 17:32:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:00,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:32:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:00,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 17:32:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:32:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 17:32:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 17:32:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 17:32:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 17:32:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 17:32:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-21 17:32:01,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:32:01,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693821285] [2021-12-21 17:32:01,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693821285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:32:01,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:32:01,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:32:01,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122623141] [2021-12-21 17:32:01,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:32:01,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:32:01,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:32:01,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:32:01,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:32:01,046 INFO L87 Difference]: Start difference. First operand 9018 states and 12541 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 17:32:01,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:32:01,359 INFO L93 Difference]: Finished difference Result 10144 states and 13839 transitions. [2021-12-21 17:32:01,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:32:01,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (15), 3 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 92 [2021-12-21 17:32:01,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:32:01,400 INFO L225 Difference]: With dead ends: 10144 [2021-12-21 17:32:01,401 INFO L226 Difference]: Without dead ends: 10142 [2021-12-21 17:32:01,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:32:01,409 INFO L933 BasicCegarLoop]: 3415 mSDtfsCounter, 1956 mSDsluCounter, 8460 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 11875 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:32:01,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1961 Valid, 11875 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:32:01,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10142 states. [2021-12-21 17:32:01,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10142 to 10140. [2021-12-21 17:32:01,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10140 states, 6862 states have (on average 1.2544447682891284) internal successors, (8608), 7104 states have internal predecessors, (8608), 2614 states have call successors, (2614), 662 states have call predecessors, (2614), 661 states have return successors, (2614), 2522 states have call predecessors, (2614), 2611 states have call successors, (2614) [2021-12-21 17:32:01,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10140 states to 10140 states and 13836 transitions. [2021-12-21 17:32:01,788 INFO L78 Accepts]: Start accepts. Automaton has 10140 states and 13836 transitions. Word has length 92 [2021-12-21 17:32:01,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:32:01,789 INFO L470 AbstractCegarLoop]: Abstraction has 10140 states and 13836 transitions. [2021-12-21 17:32:01,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 17:32:01,789 INFO L276 IsEmpty]: Start isEmpty. Operand 10140 states and 13836 transitions. [2021-12-21 17:32:01,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 17:32:01,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:32:01,792 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 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] [2021-12-21 17:32:01,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 17:32:01,792 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:32:01,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:32:01,792 INFO L85 PathProgramCache]: Analyzing trace with hash -839634563, now seen corresponding path program 1 times [2021-12-21 17:32:01,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:32:01,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944256051] [2021-12-21 17:32:01,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:32:01,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:32:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:32:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:32:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 17:32:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 17:32:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:32:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 17:32:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:32:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 17:32:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 17:32:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 17:32:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 17:32:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:01,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 17:32:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 17:32:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,013 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-12-21 17:32:02,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:32:02,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944256051] [2021-12-21 17:32:02,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944256051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:32:02,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:32:02,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:32:02,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798562234] [2021-12-21 17:32:02,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:32:02,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:32:02,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:32:02,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:32:02,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:32:02,015 INFO L87 Difference]: Start difference. First operand 10140 states and 13836 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 17:32:02,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:32:02,297 INFO L93 Difference]: Finished difference Result 10146 states and 13841 transitions. [2021-12-21 17:32:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:32:02,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 97 [2021-12-21 17:32:02,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:32:02,335 INFO L225 Difference]: With dead ends: 10146 [2021-12-21 17:32:02,335 INFO L226 Difference]: Without dead ends: 10144 [2021-12-21 17:32:02,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:32:02,343 INFO L933 BasicCegarLoop]: 3294 mSDtfsCounter, 3256 mSDsluCounter, 6568 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3260 SdHoareTripleChecker+Valid, 9862 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:32:02,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3260 Valid, 9862 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:32:02,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10144 states. [2021-12-21 17:32:02,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10144 to 10144. [2021-12-21 17:32:02,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10144 states, 6865 states have (on average 1.2543335761107064) internal successors, (8611), 7107 states have internal predecessors, (8611), 2614 states have call successors, (2614), 663 states have call predecessors, (2614), 662 states have return successors, (2614), 2522 states have call predecessors, (2614), 2611 states have call successors, (2614) [2021-12-21 17:32:02,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10144 states to 10144 states and 13839 transitions. [2021-12-21 17:32:02,697 INFO L78 Accepts]: Start accepts. Automaton has 10144 states and 13839 transitions. Word has length 97 [2021-12-21 17:32:02,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:32:02,698 INFO L470 AbstractCegarLoop]: Abstraction has 10144 states and 13839 transitions. [2021-12-21 17:32:02,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 17:32:02,698 INFO L276 IsEmpty]: Start isEmpty. Operand 10144 states and 13839 transitions. [2021-12-21 17:32:02,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-21 17:32:02,700 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:32:02,700 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:32:02,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 17:32:02,701 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:32:02,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:32:02,701 INFO L85 PathProgramCache]: Analyzing trace with hash 974774491, now seen corresponding path program 1 times [2021-12-21 17:32:02,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:32:02,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118587279] [2021-12-21 17:32:02,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:32:02,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:32:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:32:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:32:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 17:32:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 17:32:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:32:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 17:32:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 17:32:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 17:32:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 17:32:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 17:32:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 17:32:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 17:32:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 17:32:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 17:32:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 17:32:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-12-21 17:32:02,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:32:02,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118587279] [2021-12-21 17:32:02,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118587279] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:32:02,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:32:02,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:32:02,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29641239] [2021-12-21 17:32:02,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:32:02,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:32:02,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:32:02,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:32:02,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:32:02,883 INFO L87 Difference]: Start difference. First operand 10144 states and 13839 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 17:32:03,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:32:03,178 INFO L93 Difference]: Finished difference Result 10150 states and 13844 transitions. [2021-12-21 17:32:03,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:32:03,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 113 [2021-12-21 17:32:03,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:32:03,208 INFO L225 Difference]: With dead ends: 10150 [2021-12-21 17:32:03,208 INFO L226 Difference]: Without dead ends: 10148 [2021-12-21 17:32:03,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:32:03,215 INFO L933 BasicCegarLoop]: 3294 mSDtfsCounter, 3248 mSDsluCounter, 6568 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3251 SdHoareTripleChecker+Valid, 9862 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:32:03,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3251 Valid, 9862 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:32:03,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10148 states. [2021-12-21 17:32:03,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10148 to 10148. [2021-12-21 17:32:03,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10148 states, 6868 states have (on average 1.2542224810716365) internal successors, (8614), 7110 states have internal predecessors, (8614), 2614 states have call successors, (2614), 664 states have call predecessors, (2614), 663 states have return successors, (2614), 2522 states have call predecessors, (2614), 2611 states have call successors, (2614) [2021-12-21 17:32:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10148 states to 10148 states and 13842 transitions. [2021-12-21 17:32:03,554 INFO L78 Accepts]: Start accepts. Automaton has 10148 states and 13842 transitions. Word has length 113 [2021-12-21 17:32:03,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:32:03,555 INFO L470 AbstractCegarLoop]: Abstraction has 10148 states and 13842 transitions. [2021-12-21 17:32:03,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 17:32:03,555 INFO L276 IsEmpty]: Start isEmpty. Operand 10148 states and 13842 transitions. [2021-12-21 17:32:03,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-21 17:32:03,557 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:32:03,557 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:32:03,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 17:32:03,558 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:32:03,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:32:03,558 INFO L85 PathProgramCache]: Analyzing trace with hash 212508256, now seen corresponding path program 1 times [2021-12-21 17:32:03,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:32:03,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869725787] [2021-12-21 17:32:03,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:32:03,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:32:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:03,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:32:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:03,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:32:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:03,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 17:32:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:03,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:03,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 17:32:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:03,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:32:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:03,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 17:32:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:03,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 17:32:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:03,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 17:32:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:03,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 17:32:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:03,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 17:32:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:03,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 17:32:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:03,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 17:32:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:03,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 17:32:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:03,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 17:32:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:03,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 17:32:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:03,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 17:32:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-12-21 17:32:03,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:32:03,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869725787] [2021-12-21 17:32:03,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869725787] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:32:03,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:32:03,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:32:03,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628390007] [2021-12-21 17:32:03,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:32:03,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:32:03,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:32:03,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:32:03,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:32:03,762 INFO L87 Difference]: Start difference. First operand 10148 states and 13842 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 17:32:04,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:32:04,117 INFO L93 Difference]: Finished difference Result 10154 states and 13847 transitions. [2021-12-21 17:32:04,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:32:04,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 118 [2021-12-21 17:32:04,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:32:04,148 INFO L225 Difference]: With dead ends: 10154 [2021-12-21 17:32:04,148 INFO L226 Difference]: Without dead ends: 10152 [2021-12-21 17:32:04,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:32:04,153 INFO L933 BasicCegarLoop]: 3294 mSDtfsCounter, 3248 mSDsluCounter, 6568 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3250 SdHoareTripleChecker+Valid, 9862 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:32:04,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3250 Valid, 9862 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:32:04,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10152 states. [2021-12-21 17:32:04,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10152 to 10152. [2021-12-21 17:32:04,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10152 states, 6871 states have (on average 1.2541114830446805) internal successors, (8617), 7113 states have internal predecessors, (8617), 2614 states have call successors, (2614), 665 states have call predecessors, (2614), 664 states have return successors, (2614), 2522 states have call predecessors, (2614), 2611 states have call successors, (2614) [2021-12-21 17:32:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10152 states to 10152 states and 13845 transitions. [2021-12-21 17:32:04,511 INFO L78 Accepts]: Start accepts. Automaton has 10152 states and 13845 transitions. Word has length 118 [2021-12-21 17:32:04,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:32:04,512 INFO L470 AbstractCegarLoop]: Abstraction has 10152 states and 13845 transitions. [2021-12-21 17:32:04,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 17:32:04,512 INFO L276 IsEmpty]: Start isEmpty. Operand 10152 states and 13845 transitions. [2021-12-21 17:32:04,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-21 17:32:04,514 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:32:04,514 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:32:04,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 17:32:04,515 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:32:04,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:32:04,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1517638050, now seen corresponding path program 1 times [2021-12-21 17:32:04,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:32:04,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542367115] [2021-12-21 17:32:04,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:32:04,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:32:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:04,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:32:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:04,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:32:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:04,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 17:32:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:04,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:04,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 17:32:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:04,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:32:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:04,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 17:32:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:04,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:32:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:04,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 17:32:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:04,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 17:32:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:04,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 17:32:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:04,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 17:32:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:04,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 17:32:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:04,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 17:32:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:04,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 17:32:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:04,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 17:32:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:04,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 17:32:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:04,740 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-21 17:32:04,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:32:04,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542367115] [2021-12-21 17:32:04,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542367115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:32:04,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:32:04,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:32:04,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882462497] [2021-12-21 17:32:04,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:32:04,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:32:04,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:32:04,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:32:04,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:32:04,742 INFO L87 Difference]: Start difference. First operand 10152 states and 13845 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 17:32:05,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:32:05,059 INFO L93 Difference]: Finished difference Result 10158 states and 13850 transitions. [2021-12-21 17:32:05,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:32:05,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 112 [2021-12-21 17:32:05,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:32:05,167 INFO L225 Difference]: With dead ends: 10158 [2021-12-21 17:32:05,168 INFO L226 Difference]: Without dead ends: 10154 [2021-12-21 17:32:05,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:32:05,174 INFO L933 BasicCegarLoop]: 3294 mSDtfsCounter, 3256 mSDsluCounter, 6568 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3257 SdHoareTripleChecker+Valid, 9862 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:32:05,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3257 Valid, 9862 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:32:05,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10154 states. [2021-12-21 17:32:05,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10154 to 10154. [2021-12-21 17:32:05,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10154 states, 6873 states have (on average 1.2538920413211117) internal successors, (8618), 7114 states have internal predecessors, (8618), 2614 states have call successors, (2614), 666 states have call predecessors, (2614), 664 states have return successors, (2614), 2522 states have call predecessors, (2614), 2611 states have call successors, (2614) [2021-12-21 17:32:05,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10154 states to 10154 states and 13846 transitions. [2021-12-21 17:32:05,634 INFO L78 Accepts]: Start accepts. Automaton has 10154 states and 13846 transitions. Word has length 112 [2021-12-21 17:32:05,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:32:05,634 INFO L470 AbstractCegarLoop]: Abstraction has 10154 states and 13846 transitions. [2021-12-21 17:32:05,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 17:32:05,635 INFO L276 IsEmpty]: Start isEmpty. Operand 10154 states and 13846 transitions. [2021-12-21 17:32:05,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-21 17:32:05,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:32:05,638 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:32:05,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 17:32:05,638 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:32:05,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:32:05,639 INFO L85 PathProgramCache]: Analyzing trace with hash -126420419, now seen corresponding path program 1 times [2021-12-21 17:32:05,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:32:05,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479127327] [2021-12-21 17:32:05,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:32:05,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:32:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:32:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:32:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 17:32:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 17:32:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:32:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 17:32:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:32:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 17:32:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 17:32:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 17:32:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 17:32:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 17:32:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 17:32:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 17:32:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 17:32:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 17:32:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 17:32:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:05,851 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-12-21 17:32:05,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:32:05,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479127327] [2021-12-21 17:32:05,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479127327] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:32:05,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:32:05,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:32:05,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539819051] [2021-12-21 17:32:05,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:32:05,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:32:05,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:32:05,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:32:05,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:32:05,855 INFO L87 Difference]: Start difference. First operand 10154 states and 13846 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 17:32:06,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:32:06,217 INFO L93 Difference]: Finished difference Result 10154 states and 13846 transitions. [2021-12-21 17:32:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:32:06,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 117 [2021-12-21 17:32:06,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:32:06,268 INFO L225 Difference]: With dead ends: 10154 [2021-12-21 17:32:06,268 INFO L226 Difference]: Without dead ends: 10074 [2021-12-21 17:32:06,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:32:06,277 INFO L933 BasicCegarLoop]: 3292 mSDtfsCounter, 3252 mSDsluCounter, 6567 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3252 SdHoareTripleChecker+Valid, 9859 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:32:06,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3252 Valid, 9859 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:32:06,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10074 states. [2021-12-21 17:32:06,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10074 to 10074. [2021-12-21 17:32:06,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10074 states, 6825 states have (on average 1.2543589743589743) internal successors, (8561), 7061 states have internal predecessors, (8561), 2595 states have call successors, (2595), 652 states have call predecessors, (2595), 652 states have return successors, (2598), 2509 states have call predecessors, (2598), 2595 states have call successors, (2598) [2021-12-21 17:32:06,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10074 states to 10074 states and 13754 transitions. [2021-12-21 17:32:06,696 INFO L78 Accepts]: Start accepts. Automaton has 10074 states and 13754 transitions. Word has length 117 [2021-12-21 17:32:06,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:32:06,696 INFO L470 AbstractCegarLoop]: Abstraction has 10074 states and 13754 transitions. [2021-12-21 17:32:06,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 17:32:06,696 INFO L276 IsEmpty]: Start isEmpty. Operand 10074 states and 13754 transitions. [2021-12-21 17:32:06,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-21 17:32:06,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:32:06,699 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:32:06,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 17:32:06,700 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:32:06,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:32:06,700 INFO L85 PathProgramCache]: Analyzing trace with hash -796486734, now seen corresponding path program 1 times [2021-12-21 17:32:06,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:32:06,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614469572] [2021-12-21 17:32:06,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:32:06,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:32:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:06,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:32:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:06,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:32:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:06,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 17:32:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:06,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:06,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:32:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:06,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:32:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:06,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 17:32:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:06,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:06,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:32:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:06,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:32:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:06,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 17:32:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:06,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:06,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:32:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:06,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:32:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:06,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 17:32:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:06,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 17:32:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:06,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:07,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 17:32:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:07,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 17:32:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:07,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 17:32:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:07,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 17:32:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:07,056 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-12-21 17:32:07,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:32:07,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614469572] [2021-12-21 17:32:07,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614469572] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:32:07,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:32:07,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 17:32:07,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600254330] [2021-12-21 17:32:07,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:32:07,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 17:32:07,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:32:07,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 17:32:07,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 17:32:07,059 INFO L87 Difference]: Start difference. First operand 10074 states and 13754 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 17:32:11,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:32:11,488 INFO L93 Difference]: Finished difference Result 10388 states and 14230 transitions. [2021-12-21 17:32:11,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 17:32:11,488 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 144 [2021-12-21 17:32:11,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:32:11,526 INFO L225 Difference]: With dead ends: 10388 [2021-12-21 17:32:11,527 INFO L226 Difference]: Without dead ends: 10386 [2021-12-21 17:32:11,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-21 17:32:11,534 INFO L933 BasicCegarLoop]: 3131 mSDtfsCounter, 2359 mSDsluCounter, 7612 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 1025 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2668 SdHoareTripleChecker+Valid, 10743 SdHoareTripleChecker+Invalid, 3959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1025 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-21 17:32:11,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2668 Valid, 10743 Invalid, 3959 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1025 Valid, 2934 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-21 17:32:11,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10386 states. [2021-12-21 17:32:11,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10386 to 10090. [2021-12-21 17:32:11,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10090 states, 6837 states have (on average 1.253912534737458) internal successors, (8573), 7073 states have internal predecessors, (8573), 2595 states have call successors, (2595), 656 states have call predecessors, (2595), 656 states have return successors, (2598), 2509 states have call predecessors, (2598), 2595 states have call successors, (2598) [2021-12-21 17:32:11,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10090 states to 10090 states and 13766 transitions. [2021-12-21 17:32:11,923 INFO L78 Accepts]: Start accepts. Automaton has 10090 states and 13766 transitions. Word has length 144 [2021-12-21 17:32:11,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:32:11,923 INFO L470 AbstractCegarLoop]: Abstraction has 10090 states and 13766 transitions. [2021-12-21 17:32:11,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 17:32:11,923 INFO L276 IsEmpty]: Start isEmpty. Operand 10090 states and 13766 transitions. [2021-12-21 17:32:11,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 17:32:11,928 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:32:11,928 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:32:11,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 17:32:11,929 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:32:11,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:32:11,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1464581018, now seen corresponding path program 1 times [2021-12-21 17:32:11,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:32:11,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810844578] [2021-12-21 17:32:11,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:32:11,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:32:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:32:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:32:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 17:32:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:32:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:32:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 17:32:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:32:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:32:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 17:32:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:32:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:32:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 17:32:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 17:32:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 17:32:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 17:32:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 17:32:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 17:32:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 17:32:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 17:32:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 17:32:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 17:32:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-21 17:32:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:32:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 17:32:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-12-21 17:32:12,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:32:12,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810844578] [2021-12-21 17:32:12,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810844578] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:32:12,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:32:12,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 17:32:12,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173346176] [2021-12-21 17:32:12,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:32:12,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 17:32:12,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:32:12,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 17:32:12,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:32:12,216 INFO L87 Difference]: Start difference. First operand 10090 states and 13766 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-21 17:32:16,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 17:32:18,506 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 17:32:23,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:32:23,439 INFO L93 Difference]: Finished difference Result 11614 states and 16086 transitions. [2021-12-21 17:32:23,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 17:32:23,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 189 [2021-12-21 17:32:23,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:32:23,488 INFO L225 Difference]: With dead ends: 11614 [2021-12-21 17:32:23,489 INFO L226 Difference]: Without dead ends: 10890 [2021-12-21 17:32:23,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-12-21 17:32:23,500 INFO L933 BasicCegarLoop]: 2977 mSDtfsCounter, 3820 mSDsluCounter, 7518 mSDsCounter, 0 mSdLazyCounter, 6208 mSolverCounterSat, 3287 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4124 SdHoareTripleChecker+Valid, 10495 SdHoareTripleChecker+Invalid, 9496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3287 IncrementalHoareTripleChecker+Valid, 6208 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-12-21 17:32:23,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4124 Valid, 10495 Invalid, 9496 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3287 Valid, 6208 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2021-12-21 17:32:23,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10890 states. [2021-12-21 17:32:23,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10890 to 9368. [2021-12-21 17:32:23,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9368 states, 6361 states have (on average 1.2548341455745953) internal successors, (7982), 6561 states have internal predecessors, (7982), 2361 states have call successors, (2361), 644 states have call predecessors, (2361), 644 states have return successors, (2364), 2291 states have call predecessors, (2364), 2361 states have call successors, (2364) [2021-12-21 17:32:23,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9368 states to 9368 states and 12707 transitions. [2021-12-21 17:32:23,953 INFO L78 Accepts]: Start accepts. Automaton has 9368 states and 12707 transitions. Word has length 189 [2021-12-21 17:32:23,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:32:23,954 INFO L470 AbstractCegarLoop]: Abstraction has 9368 states and 12707 transitions. [2021-12-21 17:32:23,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-21 17:32:23,954 INFO L276 IsEmpty]: Start isEmpty. Operand 9368 states and 12707 transitions. [2021-12-21 17:32:23,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2021-12-21 17:32:23,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:32:23,977 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 9, 9, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:32:23,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 17:32:23,977 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:32:23,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:32:23,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1096688343, now seen corresponding path program 1 times [2021-12-21 17:32:23,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:32:23,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830194609] [2021-12-21 17:32:23,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:32:23,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:32:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:32:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:32:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 17:32:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:32:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:32:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 17:32:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:32:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:32:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 17:32:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:32:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:32:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 17:32:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 17:32:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 17:32:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 17:32:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 17:32:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 17:32:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-21 17:32:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-21 17:32:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:32:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 17:32:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-21 17:32:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 17:32:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 17:32:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-21 17:32:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-21 17:32:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-12-21 17:32:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-21 17:32:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-21 17:32:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-12-21 17:32:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:32:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-12-21 17:32:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-12-21 17:32:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-21 17:32:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:32:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-21 17:32:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 17:32:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 17:32:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-12-21 17:32:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 17:32:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 17:32:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2021-12-21 17:32:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 17:32:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 17:32:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2021-12-21 17:32:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2021-12-21 17:32:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-12-21 17:32:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 17:32:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 17:32:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2021-12-21 17:32:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2021-12-21 17:32:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2021-12-21 17:32:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:32:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:32:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-12-21 17:32:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-12-21 17:32:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2021-12-21 17:32:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2021-12-21 17:32:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2021-12-21 17:32:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 17:32:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:32:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 17:32:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-12-21 17:32:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2021-12-21 17:32:24,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:32:24,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830194609] [2021-12-21 17:32:24,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830194609] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 17:32:24,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382336192] [2021-12-21 17:32:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:32:24,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 17:32:24,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 17:32:24,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 17:32:24,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 17:32:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:26,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 5226 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 17:32:26,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 17:32:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2021-12-21 17:32:26,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 17:32:26,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382336192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:32:26,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 17:32:26,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-21 17:32:26,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479961307] [2021-12-21 17:32:26,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:32:26,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:32:26,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:32:26,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:32:26,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-21 17:32:26,827 INFO L87 Difference]: Start difference. First operand 9368 states and 12707 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-12-21 17:32:27,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:32:27,180 INFO L93 Difference]: Finished difference Result 18716 states and 25395 transitions. [2021-12-21 17:32:27,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:32:27,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 560 [2021-12-21 17:32:27,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:32:27,218 INFO L225 Difference]: With dead ends: 18716 [2021-12-21 17:32:27,218 INFO L226 Difference]: Without dead ends: 9372 [2021-12-21 17:32:27,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-21 17:32:27,260 INFO L933 BasicCegarLoop]: 3030 mSDtfsCounter, 0 mSDsluCounter, 3025 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6055 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:32:27,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6055 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:32:27,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9372 states. [2021-12-21 17:32:27,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9372 to 9372. [2021-12-21 17:32:27,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9372 states, 6365 states have (on average 1.2546739984289081) internal successors, (7986), 6565 states have internal predecessors, (7986), 2361 states have call successors, (2361), 644 states have call predecessors, (2361), 644 states have return successors, (2364), 2291 states have call predecessors, (2364), 2361 states have call successors, (2364) [2021-12-21 17:32:27,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9372 states to 9372 states and 12711 transitions. [2021-12-21 17:32:27,773 INFO L78 Accepts]: Start accepts. Automaton has 9372 states and 12711 transitions. Word has length 560 [2021-12-21 17:32:27,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:32:27,775 INFO L470 AbstractCegarLoop]: Abstraction has 9372 states and 12711 transitions. [2021-12-21 17:32:27,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-12-21 17:32:27,776 INFO L276 IsEmpty]: Start isEmpty. Operand 9372 states and 12711 transitions. [2021-12-21 17:32:27,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2021-12-21 17:32:27,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:32:27,799 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:32:27,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 17:32:28,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 17:32:28,024 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 17:32:28,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:32:28,024 INFO L85 PathProgramCache]: Analyzing trace with hash -340786642, now seen corresponding path program 1 times [2021-12-21 17:32:28,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:32:28,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872870607] [2021-12-21 17:32:28,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:32:28,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:32:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:32:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:32:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 17:32:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 17:32:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 17:32:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 17:32:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 17:32:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 17:32:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 17:32:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 17:32:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 17:32:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:32:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 17:32:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 17:32:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 17:32:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 17:32:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 17:32:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-21 17:32:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-21 17:32:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-21 17:32:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-21 17:32:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-21 17:32:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:32:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-21 17:32:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-21 17:32:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-21 17:32:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:32:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-21 17:32:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 17:32:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 17:32:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-21 17:32:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 17:32:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 17:32:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2021-12-21 17:32:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 17:32:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 17:32:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-21 17:32:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2021-12-21 17:32:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2021-12-21 17:32:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 17:32:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 17:32:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-12-21 17:32:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2021-12-21 17:32:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2021-12-21 17:32:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:32:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:32:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2021-12-21 17:32:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2021-12-21 17:32:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-12-21 17:32:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:32:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2021-12-21 17:32:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2021-12-21 17:32:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 17:32:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:32:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 17:32:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2021-12-21 17:32:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:32:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2021-12-21 17:32:28,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:32:28,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872870607] [2021-12-21 17:32:28,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872870607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:32:28,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:32:28,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:32:28,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010453285] [2021-12-21 17:32:28,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:32:28,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:32:28,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:32:28,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:32:28,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:32:28,596 INFO L87 Difference]: Start difference. First operand 9372 states and 12711 transitions. Second operand has 5 states, 5 states have (on average 50.4) internal successors, (252), 3 states have internal predecessors, (252), 3 states have call successors, (64), 4 states have call predecessors, (64), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61)